MachineImpl.cpp@ 22142

Last change on this file since 22142 was 21961, checked in by vboxsync, 15 years ago
NetworkAttachment: trigger the network attachment change only when AttachTo* API are called
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 369.0 KB

Line
1	/* $Id: MachineImpl.cpp 21961 2009-08-04 14:59:48Z 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 = true;
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 BIOS defaults */
504	mBIOSSettings->applyDefaults (aOsType);
505
506	/* Apply network adapters defaults */
507	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
508	mNetworkAdapters [slot]->applyDefaults (aOsType);
509
510	/* Apply serial port defaults */
511	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); ++ slot)
512	mSerialPorts [slot]->applyDefaults (aOsType);
513	}
514
515	/* The default is that the VM has at least one IDE controller
516	* which can't be disabled (because of the DVD stuff which is
517	* not in the StorageDevice implementation at the moment)
518	*/
519	ComPtr<IStorageController> pController;
520	rc = AddStorageController(Bstr("IDE"), StorageBus_IDE, pController.asOutParam());
521	CheckComRCReturnRC(rc);
522	ComObjPtr<StorageController> ctl;
523	rc = getStorageControllerByName(Bstr("IDE"), ctl, true);
524	CheckComRCReturnRC(rc);
525	ctl->COMSETTER(ControllerType)(StorageControllerType_PIIX4);
526	}
527
528	/* commit all changes made during the initialization */
529	if (SUCCEEDED(rc))
530	commit();
531	}
532	}
533
534	/* Confirm a successful initialization when it's the case */
535	if (SUCCEEDED(rc))
536	{
537	if (mData->mAccessible)
538	autoInitSpan.setSucceeded();
539	else
540	autoInitSpan.setLimited();
541	}
542
543	LogFlowThisFunc(("mName='%ls', mRegistered=%RTbool, mAccessible=%RTbool "
544	"rc=%08X\n",
545	!!mUserData ? mUserData->mName.raw() : NULL,
546	mData->mRegistered, mData->mAccessible, rc));
547
548	LogFlowThisFuncLeave();
549
550	return rc;
551	}
552
553	/**
554	* Initializes the registered machine by loading the settings file.
555	* This method is separated from #init() in order to make it possible to
556	* retry the operation after VirtualBox startup instead of refusing to
557	* startup the whole VirtualBox server in case if the settings file of some
558	* registered VM is invalid or inaccessible.
559	*
560	* @note Must be always called from this object's write lock
561	* (unless called from #init() that doesn't need any locking).
562	* @note Locks the mUSBController method for writing.
563	* @note Subclasses must not call this method.
564	*/
565	HRESULT Machine::registeredInit()
566	{
567	AssertReturn(mType == IsMachine, E_FAIL);
568	AssertReturn(!mData->mUuid.isEmpty(), E_FAIL);
569	AssertReturn(!mData->mAccessible, E_FAIL);
570
571	HRESULT rc = lockConfig();
572
573	if (SUCCEEDED(rc))
574	rc = initDataAndChildObjects();
575
576	if (SUCCEEDED(rc))
577	{
578	/* Temporarily reset the registered flag in order to let setters
579	* potentially called from loadSettings() succeed (isMutable() used in
580	* all setters will return FALSE for a Machine instance if mRegistered
581	* is TRUE). */
582	mData->mRegistered = FALSE;
583
584	rc = loadSettings (true /* aRegistered */);
585
586	/* Restore the registered flag (even on failure) */
587	mData->mRegistered = TRUE;
588
589	if (FAILED (rc))
590	unlockConfig();
591	}
592
593	if (SUCCEEDED(rc))
594	{
595	/* Set mAccessible to TRUE only if we successfully locked and loaded
596	* the settings file */
597	mData->mAccessible = TRUE;
598
599	/* commit all changes made during loading the settings file */
600	commit();
601	}
602	else
603	{
604	/* If the machine is registered, then, instead of returning a
605	* failure, we mark it as inaccessible and set the result to
606	* success to give it a try later */
607
608	/* fetch the current error info */
609	mData->mAccessError = com::ErrorInfo();
610	LogWarning (("Machine {%RTuuid} is inaccessible! [%ls]\n",
611	mData->mUuid.raw(),
612	mData->mAccessError.getText().raw()));
613
614	/* rollback all changes */
615	rollback (false /* aNotify */);
616
617	/* uninitialize the common part to make sure all data is reset to
618	* default (null) values */
619	uninitDataAndChildObjects();
620
621	rc = S_OK;
622	}
623
624	return rc;
625	}
626
627	/**
628	* Uninitializes the instance.
629	* Called either from FinalRelease() or by the parent when it gets destroyed.
630	*
631	* @note The caller of this method must make sure that this object
632	* a) doesn't have active callers on the current thread and b) is not locked
633	* by the current thread; otherwise uninit() will hang either a) due to
634	* AutoUninitSpan waiting for a number of calls to drop to zero or b) due to
635	* a dead-lock caused by this thread waiting for all callers on the other
636	* threads are done but preventing them from doing so by holding a lock.
637	*/
638	void Machine::uninit()
639	{
640	LogFlowThisFuncEnter();
641
642	Assert (!isWriteLockOnCurrentThread());
643
644	/* Enclose the state transition Ready->InUninit->NotReady */
645	AutoUninitSpan autoUninitSpan(this);
646	if (autoUninitSpan.uninitDone())
647	return;
648
649	Assert (mType == IsMachine);
650	Assert (!!mData);
651
652	LogFlowThisFunc(("initFailed()=%d\n", autoUninitSpan.initFailed()));
653	LogFlowThisFunc(("mRegistered=%d\n", mData->mRegistered));
654
655	/* Enter this object lock because there may be a SessionMachine instance
656	* somewhere around, that shares our data and lock but doesn't use our
657	* addCaller()/removeCaller(), and it may be also accessing the same data
658	* members. mParent lock is necessary as well because of
659	* SessionMachine::uninit(), etc.
660	*/
661	AutoMultiWriteLock2 alock (mParent, this);
662
663	if (!mData->mSession.mMachine.isNull())
664	{
665	/* Theoretically, this can only happen if the VirtualBox server has been
666	* terminated while there were clients running that owned open direct
667	* sessions. Since in this case we are definitely called by
668	* VirtualBox::uninit(), we may be sure that SessionMachine::uninit()
669	* won't happen on the client watcher thread (because it does
670	* VirtualBox::addCaller() for the duration of the
671	* SessionMachine::checkForDeath() call, so that VirtualBox::uninit()
672	* cannot happen until the VirtualBox caller is released). This is
673	* important, because SessionMachine::uninit() cannot correctly operate
674	* after we return from this method (it expects the Machine instance is
675	* still valid). We'll call it ourselves below.
676	*/
677	LogWarningThisFunc(("Session machine is not NULL (%p), "
678	"the direct session is still open!\n",
679	(SessionMachine *) mData->mSession.mMachine));
680
681	if (Global::IsOnlineOrTransient (mData->mMachineState))
682	{
683	LogWarningThisFunc(("Setting state to Aborted!\n"));
684	/* set machine state using SessionMachine reimplementation */
685	static_cast <Machine *> (mData->mSession.mMachine)
686	->setMachineState (MachineState_Aborted);
687	}
688
689	/*
690	* Uninitialize SessionMachine using public uninit() to indicate
691	* an unexpected uninitialization.
692	*/
693	mData->mSession.mMachine->uninit();
694	/* SessionMachine::uninit() must set mSession.mMachine to null */
695	Assert (mData->mSession.mMachine.isNull());
696	}
697
698	/* the lock is no more necessary (SessionMachine is uninitialized) */
699	alock.leave();
700
701	/* make sure the configuration is unlocked */
702	unlockConfig();
703
704	if (isModified())
705	{
706	LogWarningThisFunc(("Discarding unsaved settings changes!\n"));
707	rollback (false /* aNotify */);
708	}
709
710	if (mData->mAccessible)
711	uninitDataAndChildObjects();
712
713	/* free the essential data structure last */
714	mData.free();
715
716	mParent->removeDependentChild (this);
717
718	LogFlowThisFuncLeave();
719	}
720
721	// IMachine properties
722	/////////////////////////////////////////////////////////////////////////////
723
724	STDMETHODIMP Machine::COMGETTER(Parent) (IVirtualBox **aParent)
725	{
726	CheckComArgOutPointerValid(aParent);
727
728	AutoLimitedCaller autoCaller(this);
729	CheckComRCReturnRC(autoCaller.rc());
730
731	/* mParent is constant during life time, no need to lock */
732	mParent.queryInterfaceTo(aParent);
733
734	return S_OK;
735	}
736
737	STDMETHODIMP Machine::COMGETTER(Accessible) (BOOL *aAccessible)
738	{
739	CheckComArgOutPointerValid(aAccessible);
740
741	AutoLimitedCaller autoCaller(this);
742	CheckComRCReturnRC(autoCaller.rc());
743
744	AutoWriteLock alock(this);
745
746	HRESULT rc = S_OK;
747
748	if (!mData->mAccessible)
749	{
750	/* try to initialize the VM once more if not accessible */
751
752	AutoReinitSpan autoReinitSpan(this);
753	AssertReturn(autoReinitSpan.isOk(), E_FAIL);
754
755	rc = registeredInit();
756
757	if (SUCCEEDED(rc) && mData->mAccessible)
758	{
759	autoReinitSpan.setSucceeded();
760
761	/* make sure interesting parties will notice the accessibility
762	* state change */
763	mParent->onMachineStateChange(mData->mUuid, mData->mMachineState);
764	mParent->onMachineDataChange(mData->mUuid);
765	}
766	}
767
768	if (SUCCEEDED(rc))
769	*aAccessible = mData->mAccessible;
770
771	return rc;
772	}
773
774	STDMETHODIMP Machine::COMGETTER(AccessError) (IVirtualBoxErrorInfo **aAccessError)
775	{
776	CheckComArgOutPointerValid(aAccessError);
777
778	AutoLimitedCaller autoCaller(this);
779	CheckComRCReturnRC(autoCaller.rc());
780
781	AutoReadLock alock(this);
782
783	if (mData->mAccessible \|\| !mData->mAccessError.isBasicAvailable())
784	{
785	/* return shortly */
786	aAccessError = NULL;
787	return S_OK;
788	}
789
790	HRESULT rc = S_OK;
791
792	ComObjPtr<VirtualBoxErrorInfo> errorInfo;
793	rc = errorInfo.createObject();
794	if (SUCCEEDED(rc))
795	{
796	errorInfo->init (mData->mAccessError.getResultCode(),
797	mData->mAccessError.getInterfaceID(),
798	mData->mAccessError.getComponent(),
799	mData->mAccessError.getText());
800	rc = errorInfo.queryInterfaceTo(aAccessError);
801	}
802
803	return rc;
804	}
805
806	STDMETHODIMP Machine::COMGETTER(Name) (BSTR *aName)
807	{
808	CheckComArgOutPointerValid(aName);
809
810	AutoCaller autoCaller(this);
811	CheckComRCReturnRC(autoCaller.rc());
812
813	AutoReadLock alock(this);
814
815	mUserData->mName.cloneTo(aName);
816
817	return S_OK;
818	}
819
820	STDMETHODIMP Machine::COMSETTER(Name) (IN_BSTR aName)
821	{
822	CheckComArgNotNull (aName);
823
824	if (!*aName)
825	return setError (E_INVALIDARG,
826	tr ("Machine name cannot be empty"));
827
828	AutoCaller autoCaller(this);
829	CheckComRCReturnRC(autoCaller.rc());
830
831	AutoWriteLock alock(this);
832
833	HRESULT rc = checkStateDependency(MutableStateDep);
834	CheckComRCReturnRC(rc);
835
836	mUserData.backup();
837	mUserData->mName = aName;
838
839	return S_OK;
840	}
841
842	STDMETHODIMP Machine::COMGETTER(Description) (BSTR *aDescription)
843	{
844	CheckComArgOutPointerValid(aDescription);
845
846	AutoCaller autoCaller(this);
847	CheckComRCReturnRC(autoCaller.rc());
848
849	AutoReadLock alock(this);
850
851	mUserData->mDescription.cloneTo(aDescription);
852
853	return S_OK;
854	}
855
856	STDMETHODIMP Machine::COMSETTER(Description) (IN_BSTR aDescription)
857	{
858	AutoCaller autoCaller(this);
859	CheckComRCReturnRC(autoCaller.rc());
860
861	AutoWriteLock alock(this);
862
863	HRESULT rc = checkStateDependency(MutableStateDep);
864	CheckComRCReturnRC(rc);
865
866	mUserData.backup();
867	mUserData->mDescription = aDescription;
868
869	return S_OK;
870	}
871
872	STDMETHODIMP Machine::COMGETTER(Id) (BSTR *aId)
873	{
874	CheckComArgOutPointerValid(aId);
875
876	AutoLimitedCaller autoCaller(this);
877	CheckComRCReturnRC(autoCaller.rc());
878
879	AutoReadLock alock(this);
880
881	mData->mUuid.toUtf16().cloneTo(aId);
882
883	return S_OK;
884	}
885
886	STDMETHODIMP Machine::COMGETTER(OSTypeId) (BSTR *aOSTypeId)
887	{
888	CheckComArgOutPointerValid(aOSTypeId);
889
890	AutoCaller autoCaller(this);
891	CheckComRCReturnRC(autoCaller.rc());
892
893	AutoReadLock alock(this);
894
895	mUserData->mOSTypeId.cloneTo(aOSTypeId);
896
897	return S_OK;
898	}
899
900	STDMETHODIMP Machine::COMSETTER(OSTypeId) (IN_BSTR aOSTypeId)
901	{
902	CheckComArgNotNull (aOSTypeId);
903
904	AutoCaller autoCaller(this);
905	CheckComRCReturnRC(autoCaller.rc());
906
907	/* look up the object by Id to check it is valid */
908	ComPtr<IGuestOSType> guestOSType;
909	HRESULT rc = mParent->GetGuestOSType (aOSTypeId,
910	guestOSType.asOutParam());
911	CheckComRCReturnRC(rc);
912
913	/* when setting, always use the "etalon" value for consistency -- lookup
914	* by ID is case-insensitive and the input value may have different case */
915	Bstr osTypeId;
916	rc = guestOSType->COMGETTER(Id) (osTypeId.asOutParam());
917	CheckComRCReturnRC(rc);
918
919	AutoWriteLock alock(this);
920
921	rc = checkStateDependency(MutableStateDep);
922	CheckComRCReturnRC(rc);
923
924	mUserData.backup();
925	mUserData->mOSTypeId = osTypeId;
926
927	return S_OK;
928	}
929
930	STDMETHODIMP Machine::COMGETTER(HardwareVersion) (BSTR *aHWVersion)
931	{
932	if (!aHWVersion)
933	return E_POINTER;
934
935	AutoCaller autoCaller(this);
936	CheckComRCReturnRC(autoCaller.rc());
937
938	AutoReadLock alock(this);
939
940	mHWData->mHWVersion.cloneTo(aHWVersion);
941
942	return S_OK;
943	}
944
945	STDMETHODIMP Machine::COMSETTER(HardwareVersion) (IN_BSTR aHWVersion)
946	{
947	/* check known version */
948	Utf8Str hwVersion = aHWVersion;
949	if ( hwVersion.compare ("1") != 0
950	&& hwVersion.compare ("2") != 0)
951	return setError (E_INVALIDARG,
952	tr ("Invalid hardware version: %ls\n"), aHWVersion);
953
954	AutoCaller autoCaller(this);
955	CheckComRCReturnRC(autoCaller.rc());
956
957	AutoWriteLock alock(this);
958
959	HRESULT rc = checkStateDependency(MutableStateDep);
960	CheckComRCReturnRC(rc);
961
962	mHWData.backup();
963	mHWData->mHWVersion = hwVersion;
964
965	return S_OK;
966	}
967
968	STDMETHODIMP Machine::COMGETTER(MemorySize) (ULONG *memorySize)
969	{
970	if (!memorySize)
971	return E_POINTER;
972
973	AutoCaller autoCaller(this);
974	CheckComRCReturnRC(autoCaller.rc());
975
976	AutoReadLock alock(this);
977
978	*memorySize = mHWData->mMemorySize;
979
980	return S_OK;
981	}
982
983	STDMETHODIMP Machine::COMSETTER(MemorySize) (ULONG memorySize)
984	{
985	/* check RAM limits */
986	if (memorySize < MM_RAM_MIN_IN_MB \|\|
987	memorySize > MM_RAM_MAX_IN_MB)
988	return setError (E_INVALIDARG,
989	tr ("Invalid RAM size: %lu MB (must be in range [%lu, %lu] MB)"),
990	memorySize, MM_RAM_MIN_IN_MB, MM_RAM_MAX_IN_MB);
991
992	AutoCaller autoCaller(this);
993	CheckComRCReturnRC(autoCaller.rc());
994
995	AutoWriteLock alock(this);
996
997	HRESULT rc = checkStateDependency(MutableStateDep);
998	CheckComRCReturnRC(rc);
999
1000	mHWData.backup();
1001	mHWData->mMemorySize = memorySize;
1002
1003	return S_OK;
1004	}
1005
1006	STDMETHODIMP Machine::COMGETTER(CPUCount) (ULONG *CPUCount)
1007	{
1008	if (!CPUCount)
1009	return E_POINTER;
1010
1011	AutoCaller autoCaller(this);
1012	CheckComRCReturnRC(autoCaller.rc());
1013
1014	AutoReadLock alock(this);
1015
1016	*CPUCount = mHWData->mCPUCount;
1017
1018	return S_OK;
1019	}
1020
1021	STDMETHODIMP Machine::COMSETTER(CPUCount) (ULONG CPUCount)
1022	{
1023	/* check RAM limits */
1024	if (CPUCount < SchemaDefs::MinCPUCount \|\|
1025	CPUCount > SchemaDefs::MaxCPUCount)
1026	return setError (E_INVALIDARG,
1027	tr ("Invalid virtual CPU count: %lu (must be in range [%lu, %lu])"),
1028	CPUCount, SchemaDefs::MinCPUCount, SchemaDefs::MaxCPUCount);
1029
1030	AutoCaller autoCaller(this);
1031	CheckComRCReturnRC(autoCaller.rc());
1032
1033	AutoWriteLock alock(this);
1034
1035	HRESULT rc = checkStateDependency(MutableStateDep);
1036	CheckComRCReturnRC(rc);
1037
1038	mHWData.backup();
1039	mHWData->mCPUCount = CPUCount;
1040
1041	return S_OK;
1042	}
1043
1044	STDMETHODIMP Machine::COMGETTER(VRAMSize) (ULONG *memorySize)
1045	{
1046	if (!memorySize)
1047	return E_POINTER;
1048
1049	AutoCaller autoCaller(this);
1050	CheckComRCReturnRC(autoCaller.rc());
1051
1052	AutoReadLock alock(this);
1053
1054	*memorySize = mHWData->mVRAMSize;
1055
1056	return S_OK;
1057	}
1058
1059	STDMETHODIMP Machine::COMSETTER(VRAMSize) (ULONG memorySize)
1060	{
1061	/* check VRAM limits */
1062	if (memorySize < SchemaDefs::MinGuestVRAM \|\|
1063	memorySize > SchemaDefs::MaxGuestVRAM)
1064	return setError (E_INVALIDARG,
1065	tr ("Invalid VRAM size: %lu MB (must be in range [%lu, %lu] MB)"),
1066	memorySize, SchemaDefs::MinGuestVRAM, SchemaDefs::MaxGuestVRAM);
1067
1068	AutoCaller autoCaller(this);
1069	CheckComRCReturnRC(autoCaller.rc());
1070
1071	AutoWriteLock alock(this);
1072
1073	HRESULT rc = checkStateDependency(MutableStateDep);
1074	CheckComRCReturnRC(rc);
1075
1076	mHWData.backup();
1077	mHWData->mVRAMSize = memorySize;
1078
1079	return S_OK;
1080	}
1081
1082	/** @todo this method should not be public */
1083	STDMETHODIMP Machine::COMGETTER(MemoryBalloonSize) (ULONG *memoryBalloonSize)
1084	{
1085	if (!memoryBalloonSize)
1086	return E_POINTER;
1087
1088	AutoCaller autoCaller(this);
1089	CheckComRCReturnRC(autoCaller.rc());
1090
1091	AutoReadLock alock(this);
1092
1093	*memoryBalloonSize = mHWData->mMemoryBalloonSize;
1094
1095	return S_OK;
1096	}
1097
1098	/** @todo this method should not be public */
1099	STDMETHODIMP Machine::COMSETTER(MemoryBalloonSize) (ULONG memoryBalloonSize)
1100	{
1101	/* check limits */
1102	if (memoryBalloonSize >= VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize))
1103	return setError (E_INVALIDARG,
1104	tr ("Invalid memory balloon size: %lu MB (must be in range [%lu, %lu] MB)"),
1105	memoryBalloonSize, 0, VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize));
1106
1107	AutoCaller autoCaller(this);
1108	CheckComRCReturnRC(autoCaller.rc());
1109
1110	AutoWriteLock alock(this);
1111
1112	HRESULT rc = checkStateDependency(MutableStateDep);
1113	CheckComRCReturnRC(rc);
1114
1115	mHWData.backup();
1116	mHWData->mMemoryBalloonSize = memoryBalloonSize;
1117
1118	return S_OK;
1119	}
1120
1121	/** @todo this method should not be public */
1122	STDMETHODIMP Machine::COMGETTER(StatisticsUpdateInterval) (ULONG *statisticsUpdateInterval)
1123	{
1124	if (!statisticsUpdateInterval)
1125	return E_POINTER;
1126
1127	AutoCaller autoCaller(this);
1128	CheckComRCReturnRC(autoCaller.rc());
1129
1130	AutoReadLock alock(this);
1131
1132	*statisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
1133
1134	return S_OK;
1135	}
1136
1137	/** @todo this method should not be public */
1138	STDMETHODIMP Machine::COMSETTER(StatisticsUpdateInterval) (ULONG statisticsUpdateInterval)
1139	{
1140	AutoCaller autoCaller(this);
1141	CheckComRCReturnRC(autoCaller.rc());
1142
1143	AutoWriteLock alock(this);
1144
1145	HRESULT rc = checkStateDependency(MutableStateDep);
1146	CheckComRCReturnRC(rc);
1147
1148	mHWData.backup();
1149	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
1150
1151	return S_OK;
1152	}
1153
1154
1155	STDMETHODIMP Machine::COMGETTER(Accelerate3DEnabled)(BOOL *enabled)
1156	{
1157	if (!enabled)
1158	return E_POINTER;
1159
1160	AutoCaller autoCaller(this);
1161	CheckComRCReturnRC(autoCaller.rc());
1162
1163	AutoReadLock alock(this);
1164
1165	*enabled = mHWData->mAccelerate3DEnabled;
1166
1167	return S_OK;
1168	}
1169
1170	STDMETHODIMP Machine::COMSETTER(Accelerate3DEnabled)(BOOL enable)
1171	{
1172	AutoCaller autoCaller(this);
1173	CheckComRCReturnRC(autoCaller.rc());
1174
1175	AutoWriteLock alock(this);
1176
1177	HRESULT rc = checkStateDependency(MutableStateDep);
1178	CheckComRCReturnRC(rc);
1179
1180	/** @todo check validity! */
1181
1182	mHWData.backup();
1183	mHWData->mAccelerate3DEnabled = enable;
1184
1185	return S_OK;
1186	}
1187
1188
1189	STDMETHODIMP Machine::COMGETTER(MonitorCount) (ULONG *monitorCount)
1190	{
1191	if (!monitorCount)
1192	return E_POINTER;
1193
1194	AutoCaller autoCaller(this);
1195	CheckComRCReturnRC(autoCaller.rc());
1196
1197	AutoReadLock alock(this);
1198
1199	*monitorCount = mHWData->mMonitorCount;
1200
1201	return S_OK;
1202	}
1203
1204	STDMETHODIMP Machine::COMSETTER(MonitorCount) (ULONG monitorCount)
1205	{
1206	/* make sure monitor count is a sensible number */
1207	if (monitorCount < 1 \|\| monitorCount > SchemaDefs::MaxGuestMonitors)
1208	return setError (E_INVALIDARG,
1209	tr ("Invalid monitor count: %lu (must be in range [%lu, %lu])"),
1210	monitorCount, 1, SchemaDefs::MaxGuestMonitors);
1211
1212	AutoCaller autoCaller(this);
1213	CheckComRCReturnRC(autoCaller.rc());
1214
1215	AutoWriteLock alock(this);
1216
1217	HRESULT rc = checkStateDependency(MutableStateDep);
1218	CheckComRCReturnRC(rc);
1219
1220	mHWData.backup();
1221	mHWData->mMonitorCount = monitorCount;
1222
1223	return S_OK;
1224	}
1225
1226	STDMETHODIMP Machine::COMGETTER(BIOSSettings)(IBIOSSettings **biosSettings)
1227	{
1228	if (!biosSettings)
1229	return E_POINTER;
1230
1231	AutoCaller autoCaller(this);
1232	CheckComRCReturnRC(autoCaller.rc());
1233
1234	/* mBIOSSettings is constant during life time, no need to lock */
1235	mBIOSSettings.queryInterfaceTo(biosSettings);
1236
1237	return S_OK;
1238	}
1239
1240	STDMETHODIMP Machine::COMGETTER(HWVirtExEnabled)(BOOL *enabled)
1241	{
1242	if (!enabled)
1243	return E_POINTER;
1244
1245	AutoCaller autoCaller(this);
1246	CheckComRCReturnRC(autoCaller.rc());
1247
1248	AutoReadLock alock(this);
1249
1250	*enabled = mHWData->mHWVirtExEnabled;
1251
1252	return S_OK;
1253	}
1254
1255	STDMETHODIMP Machine::COMSETTER(HWVirtExEnabled)(BOOL enable)
1256	{
1257	AutoCaller autoCaller(this);
1258	CheckComRCReturnRC(autoCaller.rc());
1259
1260	AutoWriteLock alock(this);
1261
1262	HRESULT rc = checkStateDependency(MutableStateDep);
1263	CheckComRCReturnRC(rc);
1264
1265	/** @todo check validity! */
1266
1267	mHWData.backup();
1268	mHWData->mHWVirtExEnabled = enable;
1269
1270	return S_OK;
1271	}
1272
1273	STDMETHODIMP Machine::COMGETTER(HWVirtExNestedPagingEnabled)(BOOL *enabled)
1274	{
1275	if (!enabled)
1276	return E_POINTER;
1277
1278	AutoCaller autoCaller(this);
1279	CheckComRCReturnRC(autoCaller.rc());
1280
1281	AutoReadLock alock(this);
1282
1283	*enabled = mHWData->mHWVirtExNestedPagingEnabled;
1284
1285	return S_OK;
1286	}
1287
1288	STDMETHODIMP Machine::COMSETTER(HWVirtExNestedPagingEnabled)(BOOL enable)
1289	{
1290	AutoCaller autoCaller(this);
1291	CheckComRCReturnRC(autoCaller.rc());
1292
1293	AutoWriteLock alock(this);
1294
1295	HRESULT rc = checkStateDependency(MutableStateDep);
1296	CheckComRCReturnRC(rc);
1297
1298	/** @todo check validity! */
1299
1300	mHWData.backup();
1301	mHWData->mHWVirtExNestedPagingEnabled = enable;
1302
1303	return S_OK;
1304	}
1305
1306	STDMETHODIMP Machine::COMGETTER(HWVirtExVPIDEnabled)(BOOL *enabled)
1307	{
1308	if (!enabled)
1309	return E_POINTER;
1310
1311	AutoCaller autoCaller(this);
1312	CheckComRCReturnRC(autoCaller.rc());
1313
1314	AutoReadLock alock(this);
1315
1316	*enabled = mHWData->mHWVirtExVPIDEnabled;
1317
1318	return S_OK;
1319	}
1320
1321	STDMETHODIMP Machine::COMSETTER(HWVirtExVPIDEnabled)(BOOL enable)
1322	{
1323	AutoCaller autoCaller(this);
1324	CheckComRCReturnRC(autoCaller.rc());
1325
1326	AutoWriteLock alock(this);
1327
1328	HRESULT rc = checkStateDependency(MutableStateDep);
1329	CheckComRCReturnRC(rc);
1330
1331	/** @todo check validity! */
1332
1333	mHWData.backup();
1334	mHWData->mHWVirtExVPIDEnabled = enable;
1335
1336	return S_OK;
1337	}
1338
1339	STDMETHODIMP Machine::COMGETTER(PAEEnabled)(BOOL *enabled)
1340	{
1341	if (!enabled)
1342	return E_POINTER;
1343
1344	AutoCaller autoCaller(this);
1345	CheckComRCReturnRC(autoCaller.rc());
1346
1347	AutoReadLock alock(this);
1348
1349	*enabled = mHWData->mPAEEnabled;
1350
1351	return S_OK;
1352	}
1353
1354	STDMETHODIMP Machine::COMSETTER(PAEEnabled)(BOOL enable)
1355	{
1356	AutoCaller autoCaller(this);
1357	CheckComRCReturnRC(autoCaller.rc());
1358
1359	AutoWriteLock alock(this);
1360
1361	HRESULT rc = checkStateDependency(MutableStateDep);
1362	CheckComRCReturnRC(rc);
1363
1364	/** @todo check validity! */
1365
1366	mHWData.backup();
1367	mHWData->mPAEEnabled = enable;
1368
1369	return S_OK;
1370	}
1371
1372	STDMETHODIMP Machine::COMGETTER(SnapshotFolder) (BSTR *aSnapshotFolder)
1373	{
1374	CheckComArgOutPointerValid(aSnapshotFolder);
1375
1376	AutoCaller autoCaller(this);
1377	CheckComRCReturnRC(autoCaller.rc());
1378
1379	AutoReadLock alock(this);
1380
1381	mUserData->mSnapshotFolderFull.cloneTo(aSnapshotFolder);
1382
1383	return S_OK;
1384	}
1385
1386	STDMETHODIMP Machine::COMSETTER(SnapshotFolder) (IN_BSTR aSnapshotFolder)
1387	{
1388	/* @todo (r=dmik):
1389	* 1. Allow to change the name of the snapshot folder containing snapshots
1390	* 2. Rename the folder on disk instead of just changing the property
1391	* value (to be smart and not to leave garbage). Note that it cannot be
1392	* done here because the change may be rolled back. Thus, the right
1393	* place is #saveSettings().
1394	*/
1395
1396	AutoCaller autoCaller(this);
1397	CheckComRCReturnRC(autoCaller.rc());
1398
1399	AutoWriteLock alock(this);
1400
1401	HRESULT rc = checkStateDependency(MutableStateDep);
1402	CheckComRCReturnRC(rc);
1403
1404	if (!mData->mCurrentSnapshot.isNull())
1405	return setError (E_FAIL,
1406	tr ("The snapshot folder of a machine with snapshots cannot "
1407	"be changed (please discard all snapshots first)"));
1408
1409	Utf8Str snapshotFolder = aSnapshotFolder;
1410
1411	if (snapshotFolder.isEmpty())
1412	{
1413	if (isInOwnDir())
1414	{
1415	/* the default snapshots folder is 'Snapshots' in the machine dir */
1416	snapshotFolder = Utf8Str ("Snapshots");
1417	}
1418	else
1419	{
1420	/* the default snapshots folder is {UUID}, for backwards
1421	* compatibility and to resolve conflicts */
1422	snapshotFolder = Utf8StrFmt ("{%RTuuid}", mData->mUuid.raw());
1423	}
1424	}
1425
1426	int vrc = calculateFullPath (snapshotFolder, snapshotFolder);
1427	if (RT_FAILURE(vrc))
1428	return setError (E_FAIL,
1429	tr ("Invalid snapshot folder '%ls' (%Rrc)"),
1430	aSnapshotFolder, vrc);
1431
1432	mUserData.backup();
1433	mUserData->mSnapshotFolder = aSnapshotFolder;
1434	mUserData->mSnapshotFolderFull = snapshotFolder;
1435
1436	return S_OK;
1437	}
1438
1439	STDMETHODIMP Machine::
1440	COMGETTER(HardDiskAttachments) (ComSafeArrayOut(IHardDiskAttachment *, aAttachments))
1441	{
1442	if (ComSafeArrayOutIsNull(aAttachments))
1443	return E_POINTER;
1444
1445	AutoCaller autoCaller(this);
1446	CheckComRCReturnRC(autoCaller.rc());
1447
1448	AutoReadLock alock(this);
1449
1450	SafeIfaceArray<IHardDiskAttachment> attachments (mHDData->mAttachments);
1451	attachments.detachTo(ComSafeArrayOutArg(aAttachments));
1452
1453	return S_OK;
1454	}
1455
1456	STDMETHODIMP Machine::COMGETTER(VRDPServer)(IVRDPServer **vrdpServer)
1457	{
1458	#ifdef VBOX_WITH_VRDP
1459	if (!vrdpServer)
1460	return E_POINTER;
1461
1462	AutoCaller autoCaller(this);
1463	CheckComRCReturnRC(autoCaller.rc());
1464
1465	AutoReadLock alock(this);
1466
1467	Assert (!!mVRDPServer);
1468	mVRDPServer.queryInterfaceTo(vrdpServer);
1469
1470	return S_OK;
1471	#else
1472	NOREF(vrdpServer);
1473	ReturnComNotImplemented();
1474	#endif
1475	}
1476
1477	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1478	{
1479	if (!dvdDrive)
1480	return E_POINTER;
1481
1482	AutoCaller autoCaller(this);
1483	CheckComRCReturnRC(autoCaller.rc());
1484
1485	AutoReadLock alock(this);
1486
1487	Assert (!!mDVDDrive);
1488	mDVDDrive.queryInterfaceTo(dvdDrive);
1489	return S_OK;
1490	}
1491
1492	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1493	{
1494	if (!floppyDrive)
1495	return E_POINTER;
1496
1497	AutoCaller autoCaller(this);
1498	CheckComRCReturnRC(autoCaller.rc());
1499
1500	AutoReadLock alock(this);
1501
1502	Assert (!!mFloppyDrive);
1503	mFloppyDrive.queryInterfaceTo(floppyDrive);
1504	return S_OK;
1505	}
1506
1507	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1508	{
1509	if (!audioAdapter)
1510	return E_POINTER;
1511
1512	AutoCaller autoCaller(this);
1513	CheckComRCReturnRC(autoCaller.rc());
1514
1515	AutoReadLock alock(this);
1516
1517	mAudioAdapter.queryInterfaceTo(audioAdapter);
1518	return S_OK;
1519	}
1520
1521	STDMETHODIMP Machine::COMGETTER(USBController) (IUSBController **aUSBController)
1522	{
1523	#ifdef VBOX_WITH_USB
1524	CheckComArgOutPointerValid(aUSBController);
1525
1526	AutoCaller autoCaller(this);
1527	CheckComRCReturnRC(autoCaller.rc());
1528
1529	MultiResult rc = mParent->host()->checkUSBProxyService();
1530	CheckComRCReturnRC(rc);
1531
1532	AutoReadLock alock(this);
1533
1534	return rc = mUSBController.queryInterfaceTo(aUSBController);
1535	#else
1536	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1537	* extended error info to indicate that USB is simply not available
1538	* (w/o treting it as a failure), for example, as in OSE */
1539	NOREF(aUSBController);
1540	ReturnComNotImplemented();
1541	#endif
1542	}
1543
1544	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *aFilePath)
1545	{
1546	CheckComArgOutPointerValid(aFilePath);
1547
1548	AutoLimitedCaller autoCaller(this);
1549	CheckComRCReturnRC(autoCaller.rc());
1550
1551	AutoReadLock alock(this);
1552
1553	mData->mConfigFileFull.cloneTo(aFilePath);
1554	return S_OK;
1555	}
1556
1557	STDMETHODIMP Machine::
1558	COMGETTER(SettingsFileVersion) (BSTR *aSettingsFileVersion)
1559	{
1560	CheckComArgOutPointerValid(aSettingsFileVersion);
1561
1562	AutoCaller autoCaller(this);
1563	CheckComRCReturnRC(autoCaller.rc());
1564
1565	AutoReadLock alock(this);
1566
1567	mData->mSettingsFileVersion.cloneTo(aSettingsFileVersion);
1568	return S_OK;
1569	}
1570
1571	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *aModified)
1572	{
1573	CheckComArgOutPointerValid(aModified);
1574
1575	AutoCaller autoCaller(this);
1576	CheckComRCReturnRC(autoCaller.rc());
1577
1578	AutoWriteLock alock(this);
1579
1580	HRESULT rc = checkStateDependency(MutableStateDep);
1581	CheckComRCReturnRC(rc);
1582
1583	if (!isConfigLocked())
1584	{
1585	/*
1586	* if we're ready and isConfigLocked() is FALSE then it means
1587	* that no config file exists yet, so always return TRUE
1588	*/
1589	*aModified = TRUE;
1590	}
1591	else
1592	{
1593	*aModified = isModified();
1594	}
1595
1596	return S_OK;
1597	}
1598
1599	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1600	{
1601	CheckComArgOutPointerValid(aSessionState);
1602
1603	AutoCaller autoCaller(this);
1604	CheckComRCReturnRC(autoCaller.rc());
1605
1606	AutoReadLock alock(this);
1607
1608	*aSessionState = mData->mSession.mState;
1609
1610	return S_OK;
1611	}
1612
1613	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1614	{
1615	CheckComArgOutPointerValid(aSessionType);
1616
1617	AutoCaller autoCaller(this);
1618	CheckComRCReturnRC(autoCaller.rc());
1619
1620	AutoReadLock alock(this);
1621
1622	if (mData->mSession.mType.isNull())
1623	Bstr("").cloneTo(aSessionType);
1624	else
1625	mData->mSession.mType.cloneTo(aSessionType);
1626
1627	return S_OK;
1628	}
1629
1630	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1631	{
1632	CheckComArgOutPointerValid(aSessionPid);
1633
1634	AutoCaller autoCaller(this);
1635	CheckComRCReturnRC(autoCaller.rc());
1636
1637	AutoReadLock alock(this);
1638
1639	*aSessionPid = mData->mSession.mPid;
1640
1641	return S_OK;
1642	}
1643
1644	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1645	{
1646	if (!machineState)
1647	return E_POINTER;
1648
1649	AutoCaller autoCaller(this);
1650	CheckComRCReturnRC(autoCaller.rc());
1651
1652	AutoReadLock alock(this);
1653
1654	*machineState = mData->mMachineState;
1655
1656	return S_OK;
1657	}
1658
1659	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1660	{
1661	CheckComArgOutPointerValid(aLastStateChange);
1662
1663	AutoCaller autoCaller(this);
1664	CheckComRCReturnRC(autoCaller.rc());
1665
1666	AutoReadLock alock(this);
1667
1668	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1669
1670	return S_OK;
1671	}
1672
1673	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1674	{
1675	CheckComArgOutPointerValid(aStateFilePath);
1676
1677	AutoCaller autoCaller(this);
1678	CheckComRCReturnRC(autoCaller.rc());
1679
1680	AutoReadLock alock(this);
1681
1682	if (mSSData->mStateFilePath.isEmpty())
1683	Bstr("").cloneTo(aStateFilePath);
1684	else
1685	mSSData->mStateFilePath.cloneTo(aStateFilePath);
1686
1687	return S_OK;
1688	}
1689
1690	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1691	{
1692	CheckComArgOutPointerValid(aLogFolder);
1693
1694	AutoCaller autoCaller(this);
1695	AssertComRCReturnRC(autoCaller.rc());
1696
1697	AutoReadLock alock(this);
1698
1699	Utf8Str logFolder;
1700	getLogFolder (logFolder);
1701
1702	Bstr (logFolder).cloneTo(aLogFolder);
1703
1704	return S_OK;
1705	}
1706
1707	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1708	{
1709	CheckComArgOutPointerValid(aCurrentSnapshot);
1710
1711	AutoCaller autoCaller(this);
1712	CheckComRCReturnRC(autoCaller.rc());
1713
1714	AutoReadLock alock(this);
1715
1716	mData->mCurrentSnapshot.queryInterfaceTo(aCurrentSnapshot);
1717
1718	return S_OK;
1719	}
1720
1721	STDMETHODIMP Machine::COMGETTER(SnapshotCount)(ULONG *aSnapshotCount)
1722	{
1723	CheckComArgOutPointerValid(aSnapshotCount);
1724
1725	AutoCaller autoCaller(this);
1726	CheckComRCReturnRC(autoCaller.rc());
1727
1728	AutoReadLock alock(this);
1729
1730	*aSnapshotCount = !mData->mFirstSnapshot
1731	? 0
1732	: mData->mFirstSnapshot->getAllChildrenCount() + 1;
1733
1734	return S_OK;
1735	}
1736
1737	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1738	{
1739	CheckComArgOutPointerValid(aCurrentStateModified);
1740
1741	AutoCaller autoCaller(this);
1742	CheckComRCReturnRC(autoCaller.rc());
1743
1744	AutoReadLock alock(this);
1745
1746	/* Note: for machines with no snapshots, we always return FALSE
1747	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1748	* reasons :) */
1749
1750	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1751	mData->mCurrentStateModified;
1752
1753	return S_OK;
1754	}
1755
1756	STDMETHODIMP
1757	Machine::COMGETTER(SharedFolders) (ComSafeArrayOut(ISharedFolder *, aSharedFolders))
1758	{
1759	CheckComArgOutSafeArrayPointerValid(aSharedFolders);
1760
1761	AutoCaller autoCaller(this);
1762	CheckComRCReturnRC(autoCaller.rc());
1763
1764	AutoReadLock alock(this);
1765
1766	SafeIfaceArray<ISharedFolder> folders (mHWData->mSharedFolders);
1767	folders.detachTo(ComSafeArrayOutArg(aSharedFolders));
1768
1769	return S_OK;
1770	}
1771
1772	STDMETHODIMP
1773	Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1774	{
1775	CheckComArgOutPointerValid(aClipboardMode);
1776
1777	AutoCaller autoCaller(this);
1778	CheckComRCReturnRC(autoCaller.rc());
1779
1780	AutoReadLock alock(this);
1781
1782	*aClipboardMode = mHWData->mClipboardMode;
1783
1784	return S_OK;
1785	}
1786
1787	STDMETHODIMP
1788	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
1789	{
1790	AutoCaller autoCaller(this);
1791	CheckComRCReturnRC(autoCaller.rc());
1792
1793	AutoWriteLock alock(this);
1794
1795	HRESULT rc = checkStateDependency(MutableStateDep);
1796	CheckComRCReturnRC(rc);
1797
1798	mHWData.backup();
1799	mHWData->mClipboardMode = aClipboardMode;
1800
1801	return S_OK;
1802	}
1803
1804	STDMETHODIMP
1805	Machine::COMGETTER(GuestPropertyNotificationPatterns) (BSTR *aPatterns)
1806	{
1807	CheckComArgOutPointerValid(aPatterns);
1808
1809	AutoCaller autoCaller(this);
1810	CheckComRCReturnRC(autoCaller.rc());
1811
1812	AutoReadLock alock(this);
1813
1814	mHWData->mGuestPropertyNotificationPatterns.cloneTo(aPatterns);
1815
1816	return RT_LIKELY (aPatterns != NULL) ? S_OK : E_OUTOFMEMORY;
1817	}
1818
1819	STDMETHODIMP
1820	Machine::COMSETTER(GuestPropertyNotificationPatterns) (IN_BSTR aPatterns)
1821	{
1822	AssertLogRelReturn (VALID_PTR (aPatterns), E_POINTER);
1823	AutoCaller autoCaller(this);
1824	CheckComRCReturnRC(autoCaller.rc());
1825
1826	AutoWriteLock alock(this);
1827
1828	HRESULT rc = checkStateDependency(MutableStateDep);
1829	CheckComRCReturnRC(rc);
1830
1831	mHWData.backup();
1832	mHWData->mGuestPropertyNotificationPatterns = aPatterns;
1833
1834	return RT_LIKELY (!mHWData->mGuestPropertyNotificationPatterns.isNull())
1835	? S_OK : E_OUTOFMEMORY;
1836	}
1837
1838	STDMETHODIMP
1839	Machine::COMGETTER(StorageControllers) (ComSafeArrayOut(IStorageController *, aStorageControllers))
1840	{
1841	CheckComArgOutSafeArrayPointerValid(aStorageControllers);
1842
1843	AutoCaller autoCaller(this);
1844	CheckComRCReturnRC(autoCaller.rc());
1845
1846	AutoReadLock alock(this);
1847
1848	SafeIfaceArray<IStorageController> ctrls (*mStorageControllers.data());
1849	ctrls.detachTo(ComSafeArrayOutArg(aStorageControllers));
1850
1851	return S_OK;
1852	}
1853
1854	// IMachine methods
1855	/////////////////////////////////////////////////////////////////////////////
1856
1857	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
1858	{
1859	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1860	return setError (E_INVALIDARG,
1861	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1862	aPosition, SchemaDefs::MaxBootPosition);
1863
1864	if (aDevice == DeviceType_USB)
1865	return setError (E_NOTIMPL,
1866	tr ("Booting from USB device is currently not supported"));
1867
1868	AutoCaller autoCaller(this);
1869	CheckComRCReturnRC(autoCaller.rc());
1870
1871	AutoWriteLock alock(this);
1872
1873	HRESULT rc = checkStateDependency(MutableStateDep);
1874	CheckComRCReturnRC(rc);
1875
1876	mHWData.backup();
1877	mHWData->mBootOrder [aPosition - 1] = aDevice;
1878
1879	return S_OK;
1880	}
1881
1882	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
1883	{
1884	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1885	return setError (E_INVALIDARG,
1886	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1887	aPosition, SchemaDefs::MaxBootPosition);
1888
1889	AutoCaller autoCaller(this);
1890	CheckComRCReturnRC(autoCaller.rc());
1891
1892	AutoReadLock alock(this);
1893
1894	*aDevice = mHWData->mBootOrder [aPosition - 1];
1895
1896	return S_OK;
1897	}
1898
1899	STDMETHODIMP Machine::AttachHardDisk(IN_BSTR aId,
1900	IN_BSTR aControllerName, LONG aControllerPort,
1901	LONG aDevice)
1902	{
1903	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
1904	aControllerName, aControllerPort, aDevice));
1905
1906	AutoCaller autoCaller(this);
1907	CheckComRCReturnRC(autoCaller.rc());
1908
1909	/* VirtualBox::findHardDisk() need read lock; also we want to make sure the
1910	* hard disk object we pick up doesn't get unregistered before we finish. */
1911	AutoReadLock vboxLock (mParent);
1912	AutoWriteLock alock(this);
1913
1914	HRESULT rc = checkStateDependency(MutableStateDep);
1915	CheckComRCReturnRC(rc);
1916
1917	/// @todo NEWMEDIA implicit machine registration
1918	if (!mData->mRegistered)
1919	return setError (VBOX_E_INVALID_OBJECT_STATE,
1920	tr ("Cannot attach hard disks to an unregistered machine"));
1921
1922	AssertReturn(mData->mMachineState != MachineState_Saved, E_FAIL);
1923
1924	if (Global::IsOnlineOrTransient (mData->mMachineState))
1925	return setError (VBOX_E_INVALID_VM_STATE,
1926	tr ("Invalid machine state: %d"), mData->mMachineState);
1927
1928	/* Check for an existing controller. */
1929	ComObjPtr<StorageController> ctl;
1930	rc = getStorageControllerByName(aControllerName, ctl, true /* aSetError */);
1931	CheckComRCReturnRC(rc);
1932
1933	/* check that the port and device are not out of range. */
1934	ULONG portCount;
1935	ULONG devicesPerPort;
1936	rc = ctl->COMGETTER(PortCount)(&portCount);
1937	CheckComRCReturnRC(rc);
1938	rc = ctl->COMGETTER(MaxDevicesPerPortCount)(&devicesPerPort);
1939	CheckComRCReturnRC(rc);
1940
1941	if ( (aControllerPort < 0)
1942	\|\| (aControllerPort >= (LONG)portCount)
1943	\|\| (aDevice < 0)
1944	\|\| (aDevice >= (LONG)devicesPerPort)
1945	)
1946	return setError (E_INVALIDARG,
1947	tr ("The port and/or count parameter are out of range [%lu:%lu]"),
1948	portCount, devicesPerPort);
1949
1950	/* check if the device slot is already busy */
1951	HDData::AttachmentList::const_iterator it =
1952	std::find_if (mHDData->mAttachments.begin(),
1953	mHDData->mAttachments.end(),
1954	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
1955
1956	if (it != mHDData->mAttachments.end())
1957	{
1958	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
1959	AutoReadLock hdLock (hd);
1960	return setError (VBOX_E_OBJECT_IN_USE,
1961	tr ("Hard disk '%ls' is already attached to device slot %d on "
1962	"port %d of controller '%ls' of this virtual machine"),
1963	hd->locationFull().raw(), aDevice, aControllerPort, aControllerName);
1964	}
1965
1966	Guid id(aId);
1967
1968	/* find a hard disk by UUID */
1969	ComObjPtr<HardDisk> hd;
1970	rc = mParent->findHardDisk(&id, NULL, true /* aSetError */, &hd);
1971	CheckComRCReturnRC(rc);
1972
1973	AutoCaller hdCaller (hd);
1974	CheckComRCReturnRC(hdCaller.rc());
1975
1976	AutoWriteLock hdLock (hd);
1977
1978	if (std::find_if (mHDData->mAttachments.begin(),
1979	mHDData->mAttachments.end(),
1980	HardDiskAttachment::RefersTo (hd)) !=
1981	mHDData->mAttachments.end())
1982	{
1983	return setError (VBOX_E_OBJECT_IN_USE,
1984	tr ("Hard disk '%ls' is already attached to this virtual machine"),
1985	hd->locationFull().raw());
1986	}
1987
1988	bool indirect = hd->isReadOnly();
1989	bool associate = true;
1990
1991	do
1992	{
1993	if (mHDData.isBackedUp())
1994	{
1995	const HDData::AttachmentList &oldAtts =
1996	mHDData.backedUpData()->mAttachments;
1997
1998	/* check if the hard disk was attached to the VM before we started
1999	* changing attachemnts in which case the attachment just needs to
2000	* be restored */
2001	HDData::AttachmentList::const_iterator it =
2002	std::find_if (oldAtts.begin(), oldAtts.end(),
2003	HardDiskAttachment::RefersTo (hd));
2004	if (it != oldAtts.end())
2005	{
2006	AssertReturn(!indirect, E_FAIL);
2007
2008	/* see if it's the same bus/channel/device */
2009	if ((*it)->device() == aDevice &&
2010	(*it)->port() == aControllerPort &&
2011	(*it)->controller() == aControllerName)
2012	{
2013	/* the simplest case: restore the whole attachment
2014	* and return, nothing else to do */
2015	mHDData->mAttachments.push_back (*it);
2016	return S_OK;
2017	}
2018
2019	/* bus/channel/device differ; we need a new attachment object,
2020	* but don't try to associate it again */
2021	associate = false;
2022	break;
2023	}
2024	}
2025
2026	/* go further only if the attachment is to be indirect */
2027	if (!indirect)
2028	break;
2029
2030	/* perform the so called smart attachment logic for indirect
2031	* attachments. Note that smart attachment is only applicable to base
2032	* hard disks. */
2033
2034	if (hd->parent().isNull())
2035	{
2036	/* first, investigate the backup copy of the current hard disk
2037	* attachments to make it possible to re-attach existing diffs to
2038	* another device slot w/o losing their contents */
2039	if (mHDData.isBackedUp())
2040	{
2041	const HDData::AttachmentList &oldAtts =
2042	mHDData.backedUpData()->mAttachments;
2043
2044	HDData::AttachmentList::const_iterator foundIt = oldAtts.end();
2045	uint32_t foundLevel = 0;
2046
2047	for (HDData::AttachmentList::const_iterator
2048	it = oldAtts.begin(); it != oldAtts.end(); ++ it)
2049	{
2050	uint32_t level = 0;
2051	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2052	{
2053	/* skip the hard disk if its currently attached (we
2054	* cannot attach the same hard disk twice) */
2055	if (std::find_if (mHDData->mAttachments.begin(),
2056	mHDData->mAttachments.end(),
2057	HardDiskAttachment::RefersTo (
2058	(*it)->hardDisk())) !=
2059	mHDData->mAttachments.end())
2060	continue;
2061
2062	/* matched device, channel and bus (i.e. attached to the
2063	* same place) will win and immediately stop the search;
2064	* otherwise the attachment that has the youngest
2065	* descendant of hd will be used
2066	*/
2067	if ((*it)->device() == aDevice &&
2068	(*it)->port() == aControllerPort &&
2069	(*it)->controller() == aControllerName)
2070	{
2071	/* the simplest case: restore the whole attachment
2072	* and return, nothing else to do */
2073	mHDData->mAttachments.push_back (*it);
2074	return S_OK;
2075	}
2076	else
2077	if (foundIt == oldAtts.end() \|\|
2078	level > foundLevel /* prefer younger */)
2079	{
2080	foundIt = it;
2081	foundLevel = level;
2082	}
2083	}
2084	}
2085
2086	if (foundIt != oldAtts.end())
2087	{
2088	/* use the previously attached hard disk */
2089	hd = (*foundIt)->hardDisk();
2090	hdCaller.attach (hd);
2091	CheckComRCReturnRC(hdCaller.rc());
2092	hdLock.attach (hd);
2093	/* not implicit, doesn't require association with this VM */
2094	indirect = false;
2095	associate = false;
2096	/* go right to the HardDiskAttachment creation */
2097	break;
2098	}
2099	}
2100
2101	/* then, search through snapshots for the best diff in the given
2102	* hard disk's chain to base the new diff on */
2103
2104	ComObjPtr<HardDisk> base;
2105	ComObjPtr<Snapshot> snap = mData->mCurrentSnapshot;
2106	while (snap)
2107	{
2108	AutoReadLock snapLock (snap);
2109
2110	const HDData::AttachmentList &snapAtts = snap->getSnapshotMachine()->mHDData->mAttachments;
2111
2112	HDData::AttachmentList::const_iterator foundIt = snapAtts.end();
2113	uint32_t foundLevel = 0;
2114
2115	for (HDData::AttachmentList::const_iterator it = snapAtts.begin();
2116	it != snapAtts.end();
2117	++it)
2118	{
2119	uint32_t level = 0;
2120	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2121	{
2122	/* matched device, channel and bus (i.e. attached to the
2123	* same place) will win and immediately stop the search;
2124	* otherwise the attachment that has the youngest
2125	* descendant of hd will be used
2126	*/
2127	if ((*it)->device() == aDevice &&
2128	(*it)->port() == aControllerPort &&
2129	(*it)->controller() == aControllerName)
2130	{
2131	foundIt = it;
2132	break;
2133	}
2134	else
2135	if (foundIt == snapAtts.end() \|\|
2136	level > foundLevel /* prefer younger */)
2137	{
2138	foundIt = it;
2139	foundLevel = level;
2140	}
2141	}
2142	}
2143
2144	if (foundIt != snapAtts.end())
2145	{
2146	base = (*foundIt)->hardDisk();
2147	break;
2148	}
2149
2150	snap = snap->parent();
2151	}
2152
2153	/* found a suitable diff, use it as a base */
2154	if (!base.isNull())
2155	{
2156	hd = base;
2157	hdCaller.attach (hd);
2158	CheckComRCReturnRC(hdCaller.rc());
2159	hdLock.attach (hd);
2160	}
2161	}
2162
2163	ComObjPtr<HardDisk> diff;
2164	diff.createObject();
2165	rc = diff->init(mParent,
2166	hd->preferredDiffFormat(),
2167	BstrFmt ("%ls"RTPATH_SLASH_STR,
2168	mUserData->mSnapshotFolderFull.raw()));
2169	CheckComRCReturnRC(rc);
2170
2171	/* make sure the hard disk is not modified before createDiffStorage() */
2172	rc = hd->LockRead (NULL);
2173	CheckComRCReturnRC(rc);
2174
2175	/* will leave the lock before the potentially lengthy operation, so
2176	* protect with the special state */
2177	MachineState_T oldState = mData->mMachineState;
2178	setMachineState (MachineState_SettingUp);
2179
2180	hdLock.leave();
2181	alock.leave();
2182	vboxLock.unlock();
2183
2184	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard);
2185
2186	alock.enter();
2187	hdLock.enter();
2188
2189	setMachineState (oldState);
2190
2191	hd->UnlockRead (NULL);
2192
2193	CheckComRCReturnRC(rc);
2194
2195	/* use the created diff for the actual attachment */
2196	hd = diff;
2197	hdCaller.attach (hd);
2198	CheckComRCReturnRC(hdCaller.rc());
2199	hdLock.attach (hd);
2200	}
2201	while (0);
2202
2203	ComObjPtr<HardDiskAttachment> attachment;
2204	attachment.createObject();
2205	rc = attachment->init (hd, aControllerName, aControllerPort, aDevice, indirect);
2206	CheckComRCReturnRC(rc);
2207
2208	if (associate)
2209	{
2210	/* as the last step, associate the hard disk to the VM */
2211	rc = hd->attachTo (mData->mUuid);
2212	/* here we can fail because of Deleting, or being in process of
2213	* creating a Diff */
2214	CheckComRCReturnRC(rc);
2215	}
2216
2217	/* sucsess: finally remember the attachment */
2218	mHDData.backup();
2219	mHDData->mAttachments.push_back (attachment);
2220
2221	return rc;
2222	}
2223
2224	STDMETHODIMP Machine::GetHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2225	LONG aDevice, IHardDisk **aHardDisk)
2226	{
2227	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2228	aControllerName, aControllerPort, aDevice));
2229
2230	CheckComArgNotNull (aControllerName);
2231	CheckComArgOutPointerValid(aHardDisk);
2232
2233	AutoCaller autoCaller(this);
2234	CheckComRCReturnRC(autoCaller.rc());
2235
2236	AutoReadLock alock(this);
2237
2238	*aHardDisk = NULL;
2239
2240	HDData::AttachmentList::const_iterator it =
2241	std::find_if (mHDData->mAttachments.begin(),
2242	mHDData->mAttachments.end(),
2243	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2244
2245	if (it == mHDData->mAttachments.end())
2246	return setError (VBOX_E_OBJECT_NOT_FOUND,
2247	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2248	aDevice, aControllerPort, aControllerName);
2249
2250	(*it)->hardDisk().queryInterfaceTo(aHardDisk);
2251
2252	return S_OK;
2253	}
2254
2255	STDMETHODIMP Machine::DetachHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2256	LONG aDevice)
2257	{
2258	CheckComArgNotNull (aControllerName);
2259
2260	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2261	aControllerName, aControllerPort, aDevice));
2262
2263	AutoCaller autoCaller(this);
2264	CheckComRCReturnRC(autoCaller.rc());
2265
2266	AutoWriteLock alock(this);
2267
2268	HRESULT rc = checkStateDependency(MutableStateDep);
2269	CheckComRCReturnRC(rc);
2270
2271	AssertReturn(mData->mMachineState != MachineState_Saved, E_FAIL);
2272
2273	if (Global::IsOnlineOrTransient (mData->mMachineState))
2274	return setError (VBOX_E_INVALID_VM_STATE,
2275	tr ("Invalid machine state: %d"), mData->mMachineState);
2276
2277	HDData::AttachmentList::const_iterator it =
2278	std::find_if (mHDData->mAttachments.begin(),
2279	mHDData->mAttachments.end(),
2280	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2281
2282	if (it == mHDData->mAttachments.end())
2283	return setError (VBOX_E_OBJECT_NOT_FOUND,
2284	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2285	aDevice, aControllerPort, aControllerName);
2286
2287	ComObjPtr<HardDiskAttachment> hda = *it;
2288	ComObjPtr<HardDisk> hd = hda->hardDisk();
2289
2290	if (hda->isImplicit())
2291	{
2292	/* attempt to implicitly delete the implicitly created diff */
2293
2294	/// @todo move the implicit flag from HardDiskAttachment to HardDisk
2295	/// and forbid any hard disk operation when it is implicit. Or maybe
2296	/// a special media state for it to make it even more simple.
2297
2298	Assert (mHDData.isBackedUp());
2299
2300	/* will leave the lock before the potentially lengthy operation, so
2301	* protect with the special state */
2302	MachineState_T oldState = mData->mMachineState;
2303	setMachineState (MachineState_SettingUp);
2304
2305	alock.leave();
2306
2307	rc = hd->deleteStorageAndWait();
2308
2309	alock.enter();
2310
2311	setMachineState (oldState);
2312
2313	CheckComRCReturnRC(rc);
2314	}
2315
2316	mHDData.backup();
2317
2318	/* we cannot use erase (it) below because backup() above will create
2319	* a copy of the list and make this copy active, but the iterator
2320	* still refers to the original and is not valid for the copy */
2321	mHDData->mAttachments.remove (hda);
2322
2323	return S_OK;
2324	}
2325
2326	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
2327	{
2328	CheckComArgOutPointerValid(port);
2329	CheckComArgExpr (slot, slot < RT_ELEMENTS (mSerialPorts));
2330
2331	AutoCaller autoCaller(this);
2332	CheckComRCReturnRC(autoCaller.rc());
2333
2334	AutoReadLock alock(this);
2335
2336	mSerialPorts [slot].queryInterfaceTo(port);
2337
2338	return S_OK;
2339	}
2340
2341	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
2342	{
2343	CheckComArgOutPointerValid(port);
2344	CheckComArgExpr (slot, slot < RT_ELEMENTS (mParallelPorts));
2345
2346	AutoCaller autoCaller(this);
2347	CheckComRCReturnRC(autoCaller.rc());
2348
2349	AutoReadLock alock(this);
2350
2351	mParallelPorts [slot].queryInterfaceTo(port);
2352
2353	return S_OK;
2354	}
2355
2356	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
2357	{
2358	CheckComArgOutPointerValid(adapter);
2359	CheckComArgExpr (slot, slot < RT_ELEMENTS (mNetworkAdapters));
2360
2361	AutoCaller autoCaller(this);
2362	CheckComRCReturnRC(autoCaller.rc());
2363
2364	AutoReadLock alock(this);
2365
2366	mNetworkAdapters [slot].queryInterfaceTo(adapter);
2367
2368	return S_OK;
2369	}
2370
2371	/**
2372	* @note Locks this object for reading.
2373	*/
2374	STDMETHODIMP Machine::GetNextExtraDataKey (IN_BSTR aKey, BSTR aNextKey, BSTR aNextValue)
2375	{
2376	CheckComArgOutPointerValid(aNextKey);
2377
2378	AutoCaller autoCaller(this);
2379	CheckComRCReturnRC(autoCaller.rc());
2380
2381	/* start with nothing found */
2382	Bstr("").cloneTo(aNextKey);
2383	if (aNextValue)
2384	Bstr("").cloneTo(aNextValue);
2385
2386	/* if we're ready and isConfigLocked() is FALSE then it means
2387	* that no config file exists yet, so return shortly */
2388	if (!isConfigLocked())
2389	return S_OK;
2390
2391	HRESULT rc = S_OK;
2392
2393	Bstr bstrInKey(aKey);
2394
2395	/* serialize file access (prevent writes) */
2396	AutoReadLock alock(this);
2397
2398	try
2399	{
2400	using namespace settings;
2401	using namespace xml;
2402
2403	/* load the settings file (we don't reuse the existing handle but
2404	* request a new one to allow for concurrent multithreaded reads) */
2405	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2406	XmlTreeBackend tree;
2407
2408	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2409	CheckComRCReturnRC(rc);
2410
2411	Key machineNode = tree.rootKey().key ("Machine");
2412	Key extraDataNode = machineNode.findKey ("ExtraData");
2413
2414	if (!extraDataNode.isNull())
2415	{
2416	Key::List items = extraDataNode.keys ("ExtraDataItem");
2417	if (items.size())
2418	{
2419	for (Key::List::const_iterator it = items.begin();
2420	it != items.end(); ++ it)
2421	{
2422	Bstr key = (*it).stringValue ("name");
2423
2424	/* if we're supposed to return the first one */
2425	if (bstrInKey.isEmpty())
2426	{
2427	key.cloneTo(aNextKey);
2428	if (aNextValue)
2429	{
2430	Bstr val = (*it).stringValue ("value");
2431	val.cloneTo(aNextValue);
2432	}
2433	return S_OK;
2434	}
2435
2436	/* did we find the key we're looking for? */
2437	if (key == bstrInKey)
2438	{
2439	++ it;
2440	/* is there another item? */
2441	if (it != items.end())
2442	{
2443	Bstr key = (*it).stringValue ("name");
2444	key.cloneTo(aNextKey);
2445	if (aNextValue)
2446	{
2447	Bstr val = (*it).stringValue ("value");
2448	val.cloneTo(aNextValue);
2449	}
2450	}
2451	/* else it's the last one, arguments are already NULL */
2452	return S_OK;
2453	}
2454	}
2455	}
2456	}
2457
2458	/* Here we are when a) there are no items at all or b) there are items
2459	* but none of them equals the requested non-NULL key. b) is an
2460	* error as well as a) if the key is non-NULL. When the key is NULL
2461	* (which is the case only when there are no items), we just fall
2462	* through to return NULLs and S_OK. */
2463
2464	if (!bstrInKey.isEmpty())
2465	return setError (VBOX_E_OBJECT_NOT_FOUND,
2466	tr ("Could not find the extra data key '%ls'"), bstrInKey.raw());
2467	}
2468	catch (...)
2469	{
2470	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2471	}
2472
2473	return rc;
2474	}
2475
2476	/**
2477	* @note Locks this object for reading.
2478	*/
2479	STDMETHODIMP Machine::GetExtraData (IN_BSTR aKey, BSTR *aValue)
2480	{
2481	CheckComArgNotNull (aKey);
2482	CheckComArgOutPointerValid(aValue);
2483
2484	AutoCaller autoCaller(this);
2485	CheckComRCReturnRC(autoCaller.rc());
2486
2487	/* serialize file access (prevent writes) */
2488	AutoReadLock alock(this);
2489
2490	/* start with nothing found */
2491	Bstr("").cloneTo(aValue);
2492
2493	/* if we're ready and isConfigLocked() is FALSE then it means
2494	* that no config file exists yet, so return shortly */
2495	if (!isConfigLocked())
2496	return S_OK;
2497
2498	Utf8Str val;
2499	HRESULT rc = getExtraData(Utf8Str(aKey), val);
2500	if (SUCCEEDED(rc))
2501	val.cloneTo(aValue);
2502
2503	return rc;
2504	}
2505
2506	HRESULT Machine::getExtraData(const Utf8Str &aKey, Utf8Str &aValue)
2507	{
2508	HRESULT rc = S_OK;
2509
2510	try
2511	{
2512	using namespace settings;
2513	using namespace xml;
2514
2515	/* load the settings file (we don't reuse the existing handle but
2516	* request a new one to allow for concurrent multithreaded reads) */
2517	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2518	XmlTreeBackend tree;
2519
2520	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2521	CheckComRCReturnRC(rc);
2522
2523	Key machineNode = tree.rootKey().key ("Machine");
2524	Key extraDataNode = machineNode.findKey ("ExtraData");
2525
2526	if (!extraDataNode.isNull())
2527	{
2528	/* check if the key exists */
2529	Key::List items = extraDataNode.keys ("ExtraDataItem");
2530	for (Key::List::const_iterator it = items.begin();
2531	it != items.end(); ++ it)
2532	{
2533	if (aKey == (*it).stringValue ("name"))
2534	{
2535	aValue = (*it).stringValue ("value");
2536	break;
2537	}
2538	}
2539	}
2540	}
2541	catch (...)
2542	{
2543	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2544	}
2545
2546	return rc;
2547	}
2548
2549	/**
2550	* @note Locks mParent for writing + this object for writing.
2551	*/
2552	STDMETHODIMP Machine::SetExtraData (IN_BSTR aKey, IN_BSTR aValue)
2553	{
2554	CheckComArgNotNull (aKey);
2555
2556	AutoCaller autoCaller(this);
2557	CheckComRCReturnRC(autoCaller.rc());
2558
2559	/* VirtualBox::onExtraDataCanChange() and saveSettings() need mParent
2560	* lock (saveSettings() needs a write one). This object's write lock is
2561	* also necessary to serialize file access (prevent concurrent reads and
2562	* writes). */
2563	AutoMultiWriteLock2 alock (mParent, this);
2564
2565	if (mType == IsSnapshotMachine)
2566	{
2567	HRESULT rc = checkStateDependency(MutableStateDep);
2568	CheckComRCReturnRC(rc);
2569	}
2570
2571	Bstr val;
2572	if (!aValue)
2573	val = (const char *)"";
2574	else
2575	val = aValue;
2576
2577
2578	bool changed = false;
2579	HRESULT rc = S_OK;
2580
2581	/* If we're ready and isConfigLocked() is FALSE then it means that no
2582	* config file exists yet, so call saveSettings() to create one. */
2583	if (!isConfigLocked())
2584	{
2585	rc = saveSettings();
2586	CheckComRCReturnRC(rc);
2587	}
2588
2589	try
2590	{
2591	using namespace settings;
2592	using namespace xml;
2593
2594	/* load the settings file */
2595	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
2596	XmlTreeBackend tree;
2597
2598	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
2599	CheckComRCReturnRC(rc);
2600
2601	const Utf8Str key = aKey;
2602	Bstr oldVal("");
2603
2604	Key machineNode = tree.rootKey().key ("Machine");
2605	Key extraDataNode = machineNode.createKey ("ExtraData");
2606	Key extraDataItemNode;
2607
2608	Key::List items = extraDataNode.keys ("ExtraDataItem");
2609	for (Key::List::const_iterator it = items.begin();
2610	it != items.end(); ++ it)
2611	{
2612	if (key == (*it).stringValue ("name"))
2613	{
2614	extraDataItemNode = *it;
2615	oldVal = (*it).stringValue ("value");
2616	break;
2617	}
2618	}
2619
2620	/* When no key is found, oldVal is empty string */
2621	changed = oldVal != val;
2622
2623	if (changed)
2624	{
2625	/* ask for permission from all listeners */
2626	Bstr error;
2627	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, val, error))
2628	{
2629	const char *sep = error.isEmpty() ? "" : ": ";
2630	CBSTR err = error.isNull() ? (CBSTR) L"" : error.raw();
2631	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2632	sep, err));
2633	return setError (E_ACCESSDENIED,
2634	tr ("Could not set extra data because someone refused "
2635	"the requested change of '%ls' to '%ls'%s%ls"),
2636	aKey, val.raw(), sep, err);
2637	}
2638
2639	if (!val.isEmpty())
2640	{
2641	if (extraDataItemNode.isNull())
2642	{
2643	extraDataItemNode = extraDataNode.appendKey ("ExtraDataItem");
2644	extraDataItemNode.setStringValue ("name", key);
2645	}
2646	extraDataItemNode.setStringValue ("value", Utf8Str (aValue));
2647	}
2648	else
2649	{
2650	/* an old value does for sure exist here (XML schema
2651	* guarantees that "value" may not absent in the
2652	* <ExtraDataItem> element) */
2653	Assert (!extraDataItemNode.isNull());
2654	extraDataItemNode.zap();
2655	}
2656
2657	/* save settings on success */
2658	rc = VirtualBox::saveSettingsTree (tree, file,
2659	mData->mSettingsFileVersion);
2660	CheckComRCReturnRC(rc);
2661	}
2662	}
2663	catch (...)
2664	{
2665	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2666	}
2667
2668	/* fire a notification */
2669	if (SUCCEEDED(rc) && changed)
2670	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2671
2672	return rc;
2673	}
2674
2675	STDMETHODIMP Machine::SaveSettings()
2676	{
2677	AutoCaller autoCaller(this);
2678	CheckComRCReturnRC(autoCaller.rc());
2679
2680	/* saveSettings() needs mParent lock */
2681	AutoMultiWriteLock2 alock (mParent, this);
2682
2683	/* when there was auto-conversion, we want to save the file even if
2684	* the VM is saved */
2685	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2686	MutableOrSavedStateDep : MutableStateDep;
2687
2688	HRESULT rc = checkStateDependency(dep);
2689	CheckComRCReturnRC(rc);
2690
2691	/* the settings file path may never be null */
2692	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2693
2694	/* save all VM data excluding snapshots */
2695	return saveSettings();
2696	}
2697
2698	STDMETHODIMP Machine::SaveSettingsWithBackup (BSTR *aBakFileName)
2699	{
2700	CheckComArgOutPointerValid(aBakFileName);
2701
2702	AutoCaller autoCaller(this);
2703	CheckComRCReturnRC(autoCaller.rc());
2704
2705	/* saveSettings() needs mParent lock */
2706	AutoMultiWriteLock2 alock (mParent, this);
2707
2708	/* when there was auto-conversion, we want to save the file even if
2709	* the VM is saved */
2710	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2711	MutableOrSavedStateDep : MutableStateDep;
2712
2713	HRESULT rc = checkStateDependency(dep);
2714	CheckComRCReturnRC(rc);
2715
2716	/* the settings file path may never be null */
2717	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2718
2719	/* perform backup only when there was auto-conversion */
2720	if (mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL)
2721	{
2722	Bstr bakFileName;
2723
2724	HRESULT rc = VirtualBox::backupSettingsFile (mData->mConfigFileFull,
2725	mData->mSettingsFileVersion,
2726	bakFileName);
2727	CheckComRCReturnRC(rc);
2728
2729	bakFileName.cloneTo(aBakFileName);
2730	}
2731
2732	/* save all VM data excluding snapshots */
2733	return saveSettings();
2734	}
2735
2736	STDMETHODIMP Machine::DiscardSettings()
2737	{
2738	AutoCaller autoCaller(this);
2739	CheckComRCReturnRC(autoCaller.rc());
2740
2741	AutoWriteLock alock(this);
2742
2743	HRESULT rc = checkStateDependency(MutableStateDep);
2744	CheckComRCReturnRC(rc);
2745
2746	/*
2747	* during this rollback, the session will be notified if data has
2748	* been actually changed
2749	*/
2750	rollback (true /* aNotify */);
2751
2752	return S_OK;
2753	}
2754
2755	STDMETHODIMP Machine::DeleteSettings()
2756	{
2757	AutoCaller autoCaller(this);
2758	CheckComRCReturnRC(autoCaller.rc());
2759
2760	AutoWriteLock alock(this);
2761
2762	HRESULT rc = checkStateDependency(MutableStateDep);
2763	CheckComRCReturnRC(rc);
2764
2765	if (mData->mRegistered)
2766	return setError (VBOX_E_INVALID_VM_STATE,
2767	tr ("Cannot delete settings of a registered machine"));
2768
2769	/* delete the settings only when the file actually exists */
2770	if (isConfigLocked())
2771	{
2772	unlockConfig();
2773	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2774	if (RT_FAILURE(vrc))
2775	return setError (VBOX_E_IPRT_ERROR,
2776	tr ("Could not delete the settings file '%ls' (%Rrc)"),
2777	mData->mConfigFileFull.raw(), vrc);
2778
2779	/* delete the Logs folder, nothing important should be left
2780	* there (we don't check for errors because the user might have
2781	* some private files there that we don't want to delete) */
2782	Utf8Str logFolder;
2783	getLogFolder (logFolder);
2784	Assert(logFolder.length());
2785	if (RTDirExists(logFolder))
2786	{
2787	/* Delete all VBox.log[.N] files from the Logs folder
2788	* (this must be in sync with the rotation logic in
2789	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2790	* files that may have been created by the GUI. */
2791	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2792	RTFileDelete (log);
2793	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2794	RTFileDelete (log);
2795	for (int i = 3; i >= 0; i--)
2796	{
2797	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2798	RTFileDelete (log);
2799	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2800	RTFileDelete (log);
2801	}
2802
2803	RTDirRemove (logFolder);
2804	}
2805
2806	/* delete the Snapshots folder, nothing important should be left
2807	* there (we don't check for errors because the user might have
2808	* some private files there that we don't want to delete) */
2809	Utf8Str snapshotFolder(mUserData->mSnapshotFolderFull);
2810	Assert(snapshotFolder.length());
2811	if (RTDirExists(snapshotFolder))
2812	RTDirRemove(snapshotFolder);
2813
2814	/* delete the directory that contains the settings file, but only
2815	* if it matches the VM name (i.e. a structure created by default in
2816	* prepareSaveSettings()) */
2817	{
2818	Utf8Str settingsDir;
2819	if (isInOwnDir (&settingsDir))
2820	RTDirRemove (settingsDir);
2821	}
2822	}
2823
2824	return S_OK;
2825	}
2826
2827	STDMETHODIMP Machine::GetSnapshot (IN_BSTR aId, ISnapshot **aSnapshot)
2828	{
2829	CheckComArgOutPointerValid(aSnapshot);
2830
2831	AutoCaller autoCaller(this);
2832	CheckComRCReturnRC(autoCaller.rc());
2833
2834	AutoReadLock alock(this);
2835
2836	Guid id(aId);
2837	ComObjPtr<Snapshot> snapshot;
2838
2839	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2840	snapshot.queryInterfaceTo(aSnapshot);
2841
2842	return rc;
2843	}
2844
2845	STDMETHODIMP Machine::FindSnapshot (IN_BSTR aName, ISnapshot **aSnapshot)
2846	{
2847	CheckComArgNotNull (aName);
2848	CheckComArgOutPointerValid(aSnapshot);
2849
2850	AutoCaller autoCaller(this);
2851	CheckComRCReturnRC(autoCaller.rc());
2852
2853	AutoReadLock alock(this);
2854
2855	ComObjPtr<Snapshot> snapshot;
2856
2857	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2858	snapshot.queryInterfaceTo(aSnapshot);
2859
2860	return rc;
2861	}
2862
2863	STDMETHODIMP Machine::SetCurrentSnapshot (IN_BSTR /* aId */)
2864	{
2865	/// @todo (dmik) don't forget to set
2866	// mData->mCurrentStateModified to FALSE
2867
2868	return setError (E_NOTIMPL, "Not implemented");
2869	}
2870
2871	STDMETHODIMP
2872	Machine::CreateSharedFolder (IN_BSTR aName, IN_BSTR aHostPath, BOOL aWritable)
2873	{
2874	CheckComArgNotNull (aName);
2875	CheckComArgNotNull (aHostPath);
2876
2877	AutoCaller autoCaller(this);
2878	CheckComRCReturnRC(autoCaller.rc());
2879
2880	AutoWriteLock alock(this);
2881
2882	HRESULT rc = checkStateDependency(MutableStateDep);
2883	CheckComRCReturnRC(rc);
2884
2885	ComObjPtr<SharedFolder> sharedFolder;
2886	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2887	if (SUCCEEDED(rc))
2888	return setError (VBOX_E_OBJECT_IN_USE,
2889	tr ("Shared folder named '%ls' already exists"), aName);
2890
2891	sharedFolder.createObject();
2892	rc = sharedFolder->init (machine(), aName, aHostPath, aWritable);
2893	CheckComRCReturnRC(rc);
2894
2895	mHWData.backup();
2896	mHWData->mSharedFolders.push_back (sharedFolder);
2897
2898	/* inform the direct session if any */
2899	alock.leave();
2900	onSharedFolderChange();
2901
2902	return S_OK;
2903	}
2904
2905	STDMETHODIMP Machine::RemoveSharedFolder (IN_BSTR aName)
2906	{
2907	CheckComArgNotNull (aName);
2908
2909	AutoCaller autoCaller(this);
2910	CheckComRCReturnRC(autoCaller.rc());
2911
2912	AutoWriteLock alock(this);
2913
2914	HRESULT rc = checkStateDependency(MutableStateDep);
2915	CheckComRCReturnRC(rc);
2916
2917	ComObjPtr<SharedFolder> sharedFolder;
2918	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2919	CheckComRCReturnRC(rc);
2920
2921	mHWData.backup();
2922	mHWData->mSharedFolders.remove (sharedFolder);
2923
2924	/* inform the direct session if any */
2925	alock.leave();
2926	onSharedFolderChange();
2927
2928	return S_OK;
2929	}
2930
2931	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2932	{
2933	CheckComArgOutPointerValid(aCanShow);
2934
2935	/* start with No */
2936	*aCanShow = FALSE;
2937
2938	AutoCaller autoCaller(this);
2939	AssertComRCReturnRC(autoCaller.rc());
2940
2941	ComPtr<IInternalSessionControl> directControl;
2942	{
2943	AutoReadLock alock(this);
2944
2945	if (mData->mSession.mState != SessionState_Open)
2946	return setError (VBOX_E_INVALID_VM_STATE,
2947	tr ("Machine session is not open (session state: %d)"),
2948	mData->mSession.mState);
2949
2950	directControl = mData->mSession.mDirectControl;
2951	}
2952
2953	/* ignore calls made after #OnSessionEnd() is called */
2954	if (!directControl)
2955	return S_OK;
2956
2957	ULONG64 dummy;
2958	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2959	}
2960
2961	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2962	{
2963	CheckComArgOutPointerValid(aWinId);
2964
2965	AutoCaller autoCaller(this);
2966	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2967
2968	ComPtr<IInternalSessionControl> directControl;
2969	{
2970	AutoReadLock alock(this);
2971
2972	if (mData->mSession.mState != SessionState_Open)
2973	return setError (E_FAIL,
2974	tr ("Machine session is not open (session state: %d)"),
2975	mData->mSession.mState);
2976
2977	directControl = mData->mSession.mDirectControl;
2978	}
2979
2980	/* ignore calls made after #OnSessionEnd() is called */
2981	if (!directControl)
2982	return S_OK;
2983
2984	BOOL dummy;
2985	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2986	}
2987
2988	STDMETHODIMP Machine::GetGuestProperty (IN_BSTR aName, BSTR aValue, ULONG64 aTimestamp, BSTR *aFlags)
2989	{
2990	#if !defined (VBOX_WITH_GUEST_PROPS)
2991	ReturnComNotImplemented();
2992	#else
2993	CheckComArgNotNull (aName);
2994	CheckComArgOutPointerValid(aValue);
2995	CheckComArgOutPointerValid(aTimestamp);
2996	CheckComArgOutPointerValid(aFlags);
2997
2998	AutoCaller autoCaller(this);
2999	CheckComRCReturnRC(autoCaller.rc());
3000
3001	AutoReadLock alock(this);
3002
3003	using namespace guestProp;
3004	HRESULT rc = E_FAIL;
3005
3006	if (!mHWData->mPropertyServiceActive)
3007	{
3008	bool found = false;
3009	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
3010	(it != mHWData->mGuestProperties.end()) && !found; ++it)
3011	{
3012	if (it->mName == aName)
3013	{
3014	char szFlags[MAX_FLAGS_LEN + 1];
3015	it->mValue.cloneTo(aValue);
3016	*aTimestamp = it->mTimestamp;
3017	writeFlags (it->mFlags, szFlags);
3018	Bstr (szFlags).cloneTo(aFlags);
3019	found = true;
3020	}
3021	}
3022	rc = S_OK;
3023	}
3024	else
3025	{
3026	ComPtr<IInternalSessionControl> directControl =
3027	mData->mSession.mDirectControl;
3028
3029	/* just be on the safe side when calling another process */
3030	alock.unlock();
3031
3032	/* fail if we were called after #OnSessionEnd() is called. This is a
3033	* silly race condition. */
3034
3035	if (!directControl)
3036	rc = E_FAIL;
3037	else
3038	rc = directControl->AccessGuestProperty (aName, NULL, NULL,
3039	false /* isSetter */,
3040	aValue, aTimestamp, aFlags);
3041	}
3042	return rc;
3043	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3044	}
3045
3046	STDMETHODIMP Machine::GetGuestPropertyValue (IN_BSTR aName, BSTR *aValue)
3047	{
3048	ULONG64 dummyTimestamp;
3049	BSTR dummyFlags;
3050	return GetGuestProperty (aName, aValue, &dummyTimestamp, &dummyFlags);
3051	}
3052
3053	STDMETHODIMP Machine::GetGuestPropertyTimestamp (IN_BSTR aName, ULONG64 *aTimestamp)
3054	{
3055	BSTR dummyValue;
3056	BSTR dummyFlags;
3057	return GetGuestProperty (aName, &dummyValue, aTimestamp, &dummyFlags);
3058	}
3059
3060	STDMETHODIMP Machine::SetGuestProperty(IN_BSTR aName,
3061	IN_BSTR aValue,
3062	IN_BSTR aFlags)
3063	{
3064	#if !defined (VBOX_WITH_GUEST_PROPS)
3065	ReturnComNotImplemented();
3066	#else
3067	using namespace guestProp;
3068
3069	CheckComArgNotNull (aName);
3070	CheckComArgNotNull (aValue);
3071	if ((aFlags != NULL) && !VALID_PTR (aFlags))
3072	return E_INVALIDARG;
3073
3074	HRESULT rc = S_OK;
3075
3076	try
3077	{
3078	Utf8Str utf8Name(aName);
3079	Utf8Str utf8Flags(aFlags);
3080	Utf8Str utf8Patterns(mHWData->mGuestPropertyNotificationPatterns);
3081
3082	bool matchAll = false;
3083	if (utf8Patterns.isEmpty())
3084	matchAll = true;
3085
3086	uint32_t fFlags = NILFLAG;
3087	if ( (aFlags != NULL)
3088	&& RT_FAILURE(validateFlags (utf8Flags.raw(), &fFlags))
3089	)
3090	return setError(E_INVALIDARG,
3091	tr("Invalid flag values: '%ls'"),
3092	aFlags);
3093
3094	AutoCaller autoCaller(this);
3095	CheckComRCReturnRC(autoCaller.rc());
3096
3097	AutoWriteLock alock(this);
3098
3099	rc = checkStateDependency(MutableStateDep);
3100	CheckComRCReturnRC(rc);
3101
3102	rc = S_OK;
3103
3104	if (!mHWData->mPropertyServiceActive)
3105	{
3106	bool found = false;
3107	HWData::GuestProperty property;
3108	property.mFlags = NILFLAG;
3109	if (fFlags & TRANSIENT)
3110	rc = setError(VBOX_E_INVALID_OBJECT_STATE,
3111	tr("Cannot set a transient property when the machine is not running"));
3112
3113	if (SUCCEEDED(rc))
3114	{
3115	for (HWData::GuestPropertyList::iterator it =
3116	mHWData->mGuestProperties.begin();
3117	it != mHWData->mGuestProperties.end(); ++ it)
3118	if (it->mName == aName)
3119	{
3120	property = *it;
3121	if (it->mFlags & (RDONLYHOST))
3122	rc = setError (E_ACCESSDENIED,
3123	tr ("The property '%ls' cannot be changed by the host"),
3124	aName);
3125	else
3126	{
3127	mHWData.backup();
3128	/* The backup() operation invalidates our iterator, so
3129	* get a new one. */
3130	for (it = mHWData->mGuestProperties.begin();
3131	it->mName != aName; ++ it)
3132	;
3133	mHWData->mGuestProperties.erase (it);
3134	}
3135	found = true;
3136	break;
3137	}
3138	}
3139	if (found && SUCCEEDED(rc))
3140	{
3141	if (*aValue)
3142	{
3143	RTTIMESPEC time;
3144	property.mValue = aValue;
3145	property.mTimestamp = RTTimeSpecGetNano(RTTimeNow (&time));
3146	if (aFlags != NULL)
3147	property.mFlags = fFlags;
3148	mHWData->mGuestProperties.push_back (property);
3149	}
3150	}
3151	else if (SUCCEEDED(rc) && *aValue)
3152	{
3153	RTTIMESPEC time;
3154	mHWData.backup();
3155	property.mName = aName;
3156	property.mValue = aValue;
3157	property.mTimestamp = RTTimeSpecGetNano(RTTimeNow (&time));
3158	property.mFlags = fFlags;
3159	mHWData->mGuestProperties.push_back (property);
3160	}
3161	if ( SUCCEEDED(rc)
3162	&& ( matchAll
3163	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
3164	utf8Name.raw(), RTSTR_MAX, NULL)
3165	)
3166	)
3167	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
3168	}
3169	else
3170	{
3171	ComPtr<IInternalSessionControl> directControl =
3172	mData->mSession.mDirectControl;
3173
3174	/* just be on the safe side when calling another process */
3175	alock.leave();
3176
3177	BSTR dummy = NULL;
3178	ULONG64 dummy64;
3179	if (!directControl)
3180	rc = E_FAIL;
3181	else
3182	rc = directControl->AccessGuestProperty(aName, aValue, aFlags,
3183	true /* isSetter */,
3184	&dummy, &dummy64, &dummy);
3185	}
3186	}
3187	catch (std::bad_alloc &e)
3188	{
3189	rc = E_OUTOFMEMORY;
3190	}
3191
3192	return rc;
3193	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3194	}
3195
3196	STDMETHODIMP Machine::SetGuestPropertyValue (IN_BSTR aName, IN_BSTR aValue)
3197	{
3198	return SetGuestProperty (aName, aValue, NULL);
3199	}
3200
3201	STDMETHODIMP Machine::
3202	EnumerateGuestProperties (IN_BSTR aPatterns, ComSafeArrayOut(BSTR, aNames),
3203	ComSafeArrayOut(BSTR, aValues),
3204	ComSafeArrayOut(ULONG64, aTimestamps),
3205	ComSafeArrayOut(BSTR, aFlags))
3206	{
3207	#if !defined (VBOX_WITH_GUEST_PROPS)
3208	ReturnComNotImplemented();
3209	#else
3210	if (!VALID_PTR (aPatterns) && (aPatterns != NULL))
3211	return E_POINTER;
3212
3213	CheckComArgOutSafeArrayPointerValid(aNames);
3214	CheckComArgOutSafeArrayPointerValid(aValues);
3215	CheckComArgOutSafeArrayPointerValid(aTimestamps);
3216	CheckComArgOutSafeArrayPointerValid(aFlags);
3217
3218	AutoCaller autoCaller(this);
3219	CheckComRCReturnRC(autoCaller.rc());
3220
3221	AutoReadLock alock(this);
3222
3223	using namespace guestProp;
3224	HRESULT rc = E_FAIL;
3225
3226	bool matchAll = false;
3227	if ((NULL == aPatterns) \|\| (0 == aPatterns[0]))
3228	matchAll = true;
3229	if (!mHWData->mPropertyServiceActive)
3230	{
3231
3232	/*
3233	* Look for matching patterns and build up a list.
3234	*/
3235	HWData::GuestPropertyList propList;
3236	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3237	it != mHWData->mGuestProperties.end(); ++it)
3238	if ( matchAll
3239	\|\| RTStrSimplePatternMultiMatch (Utf8Str (aPatterns).raw(),
3240	RTSTR_MAX,
3241	Utf8Str (it->mName).raw(),
3242	RTSTR_MAX, NULL)
3243	)
3244	propList.push_back (*it);
3245
3246	/*
3247	* And build up the arrays for returning the property information.
3248	*/
3249	size_t cEntries = propList.size();
3250	SafeArray<BSTR> names (cEntries);
3251	SafeArray<BSTR> values (cEntries);
3252	SafeArray<ULONG64> timestamps (cEntries);
3253	SafeArray<BSTR> flags (cEntries);
3254	size_t iProp = 0;
3255	for (HWData::GuestPropertyList::iterator it = propList.begin();
3256	it != propList.end(); ++it)
3257	{
3258	char szFlags[MAX_FLAGS_LEN + 1];
3259	it->mName.cloneTo(&names[iProp]);
3260	it->mValue.cloneTo(&values[iProp]);
3261	timestamps[iProp] = it->mTimestamp;
3262	writeFlags (it->mFlags, szFlags);
3263	Bstr (szFlags).cloneTo(&flags[iProp]);
3264	++iProp;
3265	}
3266	names.detachTo(ComSafeArrayOutArg(aNames));
3267	values.detachTo(ComSafeArrayOutArg(aValues));
3268	timestamps.detachTo(ComSafeArrayOutArg(aTimestamps));
3269	flags.detachTo(ComSafeArrayOutArg(aFlags));
3270	rc = S_OK;
3271	}
3272	else
3273	{
3274	ComPtr<IInternalSessionControl> directControl =
3275	mData->mSession.mDirectControl;
3276
3277	/* just be on the safe side when calling another process */
3278	alock.unlock();
3279
3280	if (!directControl)
3281	rc = E_FAIL;
3282	else
3283	rc = directControl->EnumerateGuestProperties (aPatterns,
3284	ComSafeArrayOutArg(aNames),
3285	ComSafeArrayOutArg(aValues),
3286	ComSafeArrayOutArg(aTimestamps),
3287	ComSafeArrayOutArg(aFlags));
3288	}
3289	return rc;
3290	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3291	}
3292
3293	STDMETHODIMP Machine::
3294	GetHardDiskAttachmentsOfController(IN_BSTR aName, ComSafeArrayOut(IHardDiskAttachment *, aAttachments))
3295	{
3296	HDData::AttachmentList atts;
3297
3298	HRESULT rc = getHardDiskAttachmentsOfController(aName, atts);
3299	CheckComRCReturnRC(rc);
3300
3301	SafeIfaceArray<IHardDiskAttachment> attachments (atts);
3302	attachments.detachTo(ComSafeArrayOutArg(aAttachments));
3303
3304	return S_OK;
3305	}
3306
3307	STDMETHODIMP Machine::
3308	AddStorageController(IN_BSTR aName,
3309	StorageBus_T aConnectionType,
3310	IStorageController **controller)
3311	{
3312	CheckComArgStrNotEmptyOrNull(aName);
3313
3314	if ( (aConnectionType <= StorageBus_Null)
3315	\|\| (aConnectionType > StorageBus_SCSI))
3316	return setError (E_INVALIDARG,
3317	tr ("Invalid connection type: %d"),
3318	aConnectionType);
3319
3320	AutoCaller autoCaller(this);
3321	CheckComRCReturnRC(autoCaller.rc());
3322
3323	AutoWriteLock alock(this);
3324
3325	HRESULT rc = checkStateDependency(MutableStateDep);
3326	CheckComRCReturnRC(rc);
3327
3328	/* try to find one with the name first. */
3329	ComObjPtr<StorageController> ctrl;
3330
3331	rc = getStorageControllerByName (aName, ctrl, false /* aSetError */);
3332	if (SUCCEEDED(rc))
3333	return setError (VBOX_E_OBJECT_IN_USE,
3334	tr ("Storage controller named '%ls' already exists"), aName);
3335
3336	ctrl.createObject();
3337	rc = ctrl->init (this, aName, aConnectionType);
3338	CheckComRCReturnRC(rc);
3339
3340	mStorageControllers.backup();
3341	mStorageControllers->push_back (ctrl);
3342
3343	ctrl.queryInterfaceTo(controller);
3344
3345	/* inform the direct session if any */
3346	alock.leave();
3347	onStorageControllerChange();
3348
3349	return S_OK;
3350	}
3351
3352	STDMETHODIMP Machine::
3353	GetStorageControllerByName(IN_BSTR aName, IStorageController **aStorageController)
3354	{
3355	CheckComArgStrNotEmptyOrNull(aName);
3356
3357	AutoCaller autoCaller(this);
3358	CheckComRCReturnRC(autoCaller.rc());
3359
3360	AutoReadLock alock(this);
3361
3362	ComObjPtr<StorageController> ctrl;
3363
3364	HRESULT rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3365	if (SUCCEEDED(rc))
3366	ctrl.queryInterfaceTo(aStorageController);
3367
3368	return rc;
3369	}
3370
3371	STDMETHODIMP Machine::
3372	RemoveStorageController(IN_BSTR aName)
3373	{
3374	CheckComArgStrNotEmptyOrNull(aName);
3375
3376	AutoCaller autoCaller(this);
3377	CheckComRCReturnRC(autoCaller.rc());
3378
3379	AutoWriteLock alock(this);
3380
3381	HRESULT rc = checkStateDependency(MutableStateDep);
3382	CheckComRCReturnRC(rc);
3383
3384	ComObjPtr<StorageController> ctrl;
3385	rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3386	CheckComRCReturnRC(rc);
3387
3388	/* We can remove the controller only if there is no device attached. */
3389	/* check if the device slot is already busy */
3390	for (HDData::AttachmentList::const_iterator
3391	it = mHDData->mAttachments.begin();
3392	it != mHDData->mAttachments.end();
3393	++ it)
3394	{
3395	if (it != mHDData->mAttachments.end())
3396	{
3397	if ((*it)->controller() == aName)
3398	return setError (VBOX_E_OBJECT_IN_USE,
3399	tr ("Storage controller named '%ls' has still devices attached"), aName);
3400	}
3401	}
3402
3403	/* We can remove it now. */
3404	mStorageControllers.backup();
3405
3406	ctrl->unshare();
3407
3408	mStorageControllers->remove (ctrl);
3409
3410	/* inform the direct session if any */
3411	alock.leave();
3412	onStorageControllerChange();
3413
3414	return S_OK;
3415	}
3416
3417	// public methods for internal purposes
3418	/////////////////////////////////////////////////////////////////////////////
3419
3420	/**
3421	* Saves the registry entry of this machine to the given configuration node.
3422	*
3423	* @param aEntryNode Node to save the registry entry to.
3424	*
3425	* @note locks this object for reading.
3426	*/
3427	HRESULT Machine::saveRegistryEntry (settings::Key &aEntryNode)
3428	{
3429	AssertReturn(!aEntryNode.isNull(), E_FAIL);
3430
3431	AutoLimitedCaller autoCaller(this);
3432	AssertComRCReturnRC(autoCaller.rc());
3433
3434	AutoReadLock alock(this);
3435
3436	/* UUID */
3437	aEntryNode.setValue <Guid> ("uuid", mData->mUuid);
3438	/* settings file name (possibly, relative) */
3439	aEntryNode.setValue <Bstr> ("src", mData->mConfigFile);
3440
3441	return S_OK;
3442	}
3443
3444	/**
3445	* Calculates the absolute path of the given path taking the directory of the
3446	* machine settings file as the current directory.
3447	*
3448	* @param aPath Path to calculate the absolute path for.
3449	* @param aResult Where to put the result (used only on success, can be the
3450	* same Utf8Str instance as passed in @a aPath).
3451	* @return IPRT result.
3452	*
3453	* @note Locks this object for reading.
3454	*/
3455	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
3456	{
3457	AutoCaller autoCaller(this);
3458	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3459
3460	AutoReadLock alock(this);
3461
3462	AssertReturn(!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
3463
3464	Utf8Str strSettingsDir = mData->mConfigFileFull;
3465
3466	strSettingsDir.stripFilename();
3467	char folder[RTPATH_MAX];
3468	int vrc = RTPathAbsEx(strSettingsDir, aPath, folder, sizeof(folder));
3469	if (RT_SUCCESS(vrc))
3470	aResult = folder;
3471
3472	return vrc;
3473	}
3474
3475	/**
3476	* Tries to calculate the relative path of the given absolute path using the
3477	* directory of the machine settings file as the base directory.
3478	*
3479	* @param aPath Absolute path to calculate the relative path for.
3480	* @param aResult Where to put the result (used only when it's possible to
3481	* make a relative path from the given absolute path; otherwise
3482	* left untouched).
3483	*
3484	* @note Locks this object for reading.
3485	*/
3486	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
3487	{
3488	AutoCaller autoCaller(this);
3489	AssertComRCReturn (autoCaller.rc(), (void) 0);
3490
3491	AutoReadLock alock(this);
3492
3493	AssertReturnVoid (!mData->mConfigFileFull.isNull());
3494
3495	Utf8Str settingsDir = mData->mConfigFileFull;
3496
3497	settingsDir.stripFilename();
3498	if (RTPathStartsWith(aPath, settingsDir))
3499	{
3500	/* when assigning, we create a separate Utf8Str instance because both
3501	* aPath and aResult can point to the same memory location when this
3502	* func is called (if we just do aResult = aPath, aResult will be freed
3503	* first, and since its the same as aPath, an attempt to copy garbage
3504	* will be made. */
3505	aResult = Utf8Str(aPath + settingsDir.length() + 1);
3506	}
3507	}
3508
3509	/**
3510	* Returns the full path to the machine's log folder in the
3511	* \a aLogFolder argument.
3512	*/
3513	void Machine::getLogFolder (Utf8Str &aLogFolder)
3514	{
3515	AutoCaller autoCaller(this);
3516	AssertComRCReturnVoid (autoCaller.rc());
3517
3518	AutoReadLock alock(this);
3519
3520	Utf8Str settingsDir;
3521	if (isInOwnDir (&settingsDir))
3522	{
3523	/* Log folder is <Machines>/<VM_Name>/Logs */
3524	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
3525	}
3526	else
3527	{
3528	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
3529	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
3530	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
3531	RTPATH_DELIMITER);
3532	}
3533	}
3534
3535	/**
3536	* @note Locks this object for writing, calls the client process (outside the
3537	* lock).
3538	*/
3539	HRESULT Machine::openSession (IInternalSessionControl *aControl)
3540	{
3541	LogFlowThisFuncEnter();
3542
3543	AssertReturn(aControl, E_FAIL);
3544
3545	AutoCaller autoCaller(this);
3546	CheckComRCReturnRC(autoCaller.rc());
3547
3548	AutoWriteLock alock(this);
3549
3550	if (!mData->mRegistered)
3551	return setError (E_UNEXPECTED,
3552	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3553
3554	LogFlowThisFunc(("mSession.mState=%d\n", mData->mSession.mState));
3555
3556	if (mData->mSession.mState == SessionState_Open \|\|
3557	mData->mSession.mState == SessionState_Closing)
3558	return setError (VBOX_E_INVALID_OBJECT_STATE,
3559	tr ("A session for the machine '%ls' is currently open "
3560	"(or being closed)"),
3561	mUserData->mName.raw());
3562
3563	/* may not be busy */
3564	AssertReturn(!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3565
3566	/* get the session PID */
3567	RTPROCESS pid = NIL_RTPROCESS;
3568	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
3569	aControl->GetPID ((ULONG *) &pid);
3570	Assert (pid != NIL_RTPROCESS);
3571
3572	if (mData->mSession.mState == SessionState_Spawning)
3573	{
3574	/* This machine is awaiting for a spawning session to be opened, so
3575	* reject any other open attempts from processes other than one
3576	* started by #openRemoteSession(). */
3577
3578	LogFlowThisFunc(("mSession.mPid=%d(0x%x)\n",
3579	mData->mSession.mPid, mData->mSession.mPid));
3580	LogFlowThisFunc(("session.pid=%d(0x%x)\n", pid, pid));
3581
3582	if (mData->mSession.mPid != pid)
3583	return setError (E_ACCESSDENIED,
3584	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
3585	"session with the machine named '%ls', while only a process "
3586	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
3587	pid, mUserData->mName.raw(), mData->mSession.mPid);
3588	}
3589
3590	/* create a SessionMachine object */
3591	ComObjPtr<SessionMachine> sessionMachine;
3592	sessionMachine.createObject();
3593	HRESULT rc = sessionMachine->init (this);
3594	AssertComRC (rc);
3595
3596	/* NOTE: doing return from this function after this point but
3597	* before the end is forbidden since it may call SessionMachine::uninit()
3598	* (through the ComObjPtr's destructor) which requests the VirtualBox write
3599	* lock while still holding the Machine lock in alock so that a deadlock
3600	* is possible due to the wrong lock order. */
3601
3602	if (SUCCEEDED(rc))
3603	{
3604	#ifdef VBOX_WITH_RESOURCE_USAGE_API
3605	registerMetrics (mParent->performanceCollector(), this, pid);
3606	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
3607
3608	/*
3609	* Set the session state to Spawning to protect against subsequent
3610	* attempts to open a session and to unregister the machine after
3611	* we leave the lock.
3612	*/
3613	SessionState_T origState = mData->mSession.mState;
3614	mData->mSession.mState = SessionState_Spawning;
3615
3616	/*
3617	* Leave the lock before calling the client process -- it will call
3618	* Machine/SessionMachine methods. Leaving the lock here is quite safe
3619	* because the state is Spawning, so that openRemotesession() and
3620	* openExistingSession() calls will fail. This method, called before we
3621	* enter the lock again, will fail because of the wrong PID.
3622	*
3623	* Note that mData->mSession.mRemoteControls accessed outside
3624	* the lock may not be modified when state is Spawning, so it's safe.
3625	*/
3626	alock.leave();
3627
3628	LogFlowThisFunc(("Calling AssignMachine()...\n"));
3629	rc = aControl->AssignMachine (sessionMachine);
3630	LogFlowThisFunc(("AssignMachine() returned %08X\n", rc));
3631
3632	/* The failure may occur w/o any error info (from RPC), so provide one */
3633	if (FAILED (rc))
3634	setError (VBOX_E_VM_ERROR,
3635	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3636
3637	if (SUCCEEDED(rc) && origState == SessionState_Spawning)
3638	{
3639	/* complete the remote session initialization */
3640
3641	/* get the console from the direct session */
3642	ComPtr<IConsole> console;
3643	rc = aControl->GetRemoteConsole (console.asOutParam());
3644	ComAssertComRC (rc);
3645
3646	if (SUCCEEDED(rc) && !console)
3647	{
3648	ComAssert (!!console);
3649	rc = E_FAIL;
3650	}
3651
3652	/* assign machine & console to the remote session */
3653	if (SUCCEEDED(rc))
3654	{
3655	/*
3656	* after openRemoteSession(), the first and the only
3657	* entry in remoteControls is that remote session
3658	*/
3659	LogFlowThisFunc(("Calling AssignRemoteMachine()...\n"));
3660	rc = mData->mSession.mRemoteControls.front()->
3661	AssignRemoteMachine (sessionMachine, console);
3662	LogFlowThisFunc(("AssignRemoteMachine() returned %08X\n", rc));
3663
3664	/* The failure may occur w/o any error info (from RPC), so provide one */
3665	if (FAILED (rc))
3666	setError (VBOX_E_VM_ERROR,
3667	tr ("Failed to assign the machine to the remote session (%Rrc)"), rc);
3668	}
3669
3670	if (FAILED (rc))
3671	aControl->Uninitialize();
3672	}
3673
3674	/* enter the lock again */
3675	alock.enter();
3676
3677	/* Restore the session state */
3678	mData->mSession.mState = origState;
3679	}
3680
3681	/* finalize spawning anyway (this is why we don't return on errors above) */
3682	if (mData->mSession.mState == SessionState_Spawning)
3683	{
3684	/* Note that the progress object is finalized later */
3685
3686	/* We don't reset mSession.mPid here because it is necessary for
3687	* SessionMachine::uninit() to reap the child process later. */
3688
3689	if (FAILED (rc))
3690	{
3691	/* Close the remote session, remove the remote control from the list
3692	* and reset session state to Closed (@note keep the code in sync
3693	* with the relevant part in openSession()). */
3694
3695	Assert (mData->mSession.mRemoteControls.size() == 1);
3696	if (mData->mSession.mRemoteControls.size() == 1)
3697	{
3698	ErrorInfoKeeper eik;
3699	mData->mSession.mRemoteControls.front()->Uninitialize();
3700	}
3701
3702	mData->mSession.mRemoteControls.clear();
3703	mData->mSession.mState = SessionState_Closed;
3704	}
3705	}
3706	else
3707	{
3708	/* memorize PID of the directly opened session */
3709	if (SUCCEEDED(rc))
3710	mData->mSession.mPid = pid;
3711	}
3712
3713	if (SUCCEEDED(rc))
3714	{
3715	/* memorize the direct session control and cache IUnknown for it */
3716	mData->mSession.mDirectControl = aControl;
3717	mData->mSession.mState = SessionState_Open;
3718	/* associate the SessionMachine with this Machine */
3719	mData->mSession.mMachine = sessionMachine;
3720
3721	/* request an IUnknown pointer early from the remote party for later
3722	* identity checks (it will be internally cached within mDirectControl
3723	* at least on XPCOM) */
3724	ComPtr<IUnknown> unk = mData->mSession.mDirectControl;
3725	NOREF (unk);
3726	}
3727
3728	if (mData->mSession.mProgress)
3729	{
3730	/* finalize the progress after setting the state, for consistency */
3731	mData->mSession.mProgress->notifyComplete (rc);
3732	mData->mSession.mProgress.setNull();
3733	}
3734
3735	/* Leave the lock since SessionMachine::uninit() locks VirtualBox which
3736	* would break the lock order */
3737	alock.leave();
3738
3739	/* uninitialize the created session machine on failure */
3740	if (FAILED (rc))
3741	sessionMachine->uninit();
3742
3743	LogFlowThisFunc(("rc=%08X\n", rc));
3744	LogFlowThisFuncLeave();
3745	return rc;
3746	}
3747
3748	/**
3749	* @note Locks this object for writing, calls the client process
3750	* (inside the lock).
3751	*/
3752	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
3753	IN_BSTR aType, IN_BSTR aEnvironment,
3754	Progress *aProgress)
3755	{
3756	LogFlowThisFuncEnter();
3757
3758	AssertReturn(aControl, E_FAIL);
3759	AssertReturn(aProgress, E_FAIL);
3760
3761	AutoCaller autoCaller(this);
3762	CheckComRCReturnRC(autoCaller.rc());
3763
3764	AutoWriteLock alock(this);
3765
3766	if (!mData->mRegistered)
3767	return setError (E_UNEXPECTED,
3768	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3769
3770	LogFlowThisFunc(("mSession.mState=%d\n", mData->mSession.mState));
3771
3772	if (mData->mSession.mState == SessionState_Open \|\|
3773	mData->mSession.mState == SessionState_Spawning \|\|
3774	mData->mSession.mState == SessionState_Closing)
3775	return setError (VBOX_E_INVALID_OBJECT_STATE,
3776	tr ("A session for the machine '%ls' is currently open "
3777	"(or being opened or closed)"),
3778	mUserData->mName.raw());
3779
3780	/* may not be busy */
3781	AssertReturn(!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3782
3783	/* get the path to the executable */
3784	char path [RTPATH_MAX];
3785	RTPathAppPrivateArch (path, RTPATH_MAX);
3786	size_t sz = strlen (path);
3787	path [sz++] = RTPATH_DELIMITER;
3788	path [sz] = 0;
3789	char *cmd = path + sz;
3790	sz = RTPATH_MAX - sz;
3791
3792	int vrc = VINF_SUCCESS;
3793	RTPROCESS pid = NIL_RTPROCESS;
3794
3795	RTENV env = RTENV_DEFAULT;
3796
3797	if (aEnvironment != NULL && *aEnvironment)
3798	{
3799	char *newEnvStr = NULL;
3800
3801	do
3802	{
3803	/* clone the current environment */
3804	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3805	AssertRCBreakStmt (vrc2, vrc = vrc2);
3806
3807	newEnvStr = RTStrDup (Utf8Str (aEnvironment));
3808	AssertPtrBreakStmt (newEnvStr, vrc = vrc2);
3809
3810	/* put new variables to the environment
3811	* (ignore empty variable names here since RTEnv API
3812	* intentionally doesn't do that) */
3813	char *var = newEnvStr;
3814	for (char p = newEnvStr; p; ++ p)
3815	{
3816	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3817	{
3818	*p = '\0';
3819	if (*var)
3820	{
3821	char *val = strchr (var, '=');
3822	if (val)
3823	{
3824	*val++ = '\0';
3825	vrc2 = RTEnvSetEx (env, var, val);
3826	}
3827	else
3828	vrc2 = RTEnvUnsetEx (env, var);
3829	if (RT_FAILURE(vrc2))
3830	break;
3831	}
3832	var = p + 1;
3833	}
3834	}
3835	if (RT_SUCCESS(vrc2) && *var)
3836	vrc2 = RTEnvPutEx (env, var);
3837
3838	AssertRCBreakStmt (vrc2, vrc = vrc2);
3839	}
3840	while (0);
3841
3842	if (newEnvStr != NULL)
3843	RTStrFree (newEnvStr);
3844	}
3845
3846	Bstr type (aType);
3847
3848	/* Qt is default */
3849	#ifdef VBOX_WITH_QTGUI
3850	if (type == "gui" \|\| type == "GUI/Qt")
3851	{
3852	# ifdef RT_OS_DARWIN /* Avoid Launch Services confusing this with the selector by using a helper app. */
3853	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3854	# else
3855	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3856	# endif
3857	Assert (sz >= sizeof (VirtualBox_exe));
3858	strcpy (cmd, VirtualBox_exe);
3859
3860	Utf8Str idStr = mData->mUuid.toString();
3861	# ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3862	const char * args[] = {path, "--startvm", idStr, 0 };
3863	# else
3864	Utf8Str name = mUserData->mName;
3865	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0 };
3866	# endif
3867	vrc = RTProcCreate (path, args, env, 0, &pid);
3868	}
3869	#else /* !VBOX_WITH_QTGUI */
3870	if (0)
3871	;
3872	#endif /* VBOX_WITH_QTGUI */
3873
3874	else
3875
3876	#ifdef VBOX_WITH_VBOXSDL
3877	if (type == "sdl" \|\| type == "GUI/SDL")
3878	{
3879	const char VBoxSDL_exe[] = "VBoxSDL" HOSTSUFF_EXE;
3880	Assert (sz >= sizeof (VBoxSDL_exe));
3881	strcpy (cmd, VBoxSDL_exe);
3882
3883	Utf8Str idStr = mData->mUuid.toString();
3884	# ifdef RT_OS_WINDOWS
3885	const char * args[] = {path, "--startvm", idStr, 0 };
3886	# else
3887	Utf8Str name = mUserData->mName;
3888	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0 };
3889	# endif
3890	vrc = RTProcCreate (path, args, env, 0, &pid);
3891	}
3892	#else /* !VBOX_WITH_VBOXSDL */
3893	if (0)
3894	;
3895	#endif /* !VBOX_WITH_VBOXSDL */
3896
3897	else
3898
3899	#ifdef VBOX_WITH_HEADLESS
3900	if ( type == "headless"
3901	\|\| type == "capture"
3902	#ifdef VBOX_WITH_VRDP
3903	\|\| type == "vrdp"
3904	#endif
3905	)
3906	{
3907	const char VBoxHeadless_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3908	Assert (sz >= sizeof (VBoxHeadless_exe));
3909	strcpy (cmd, VBoxHeadless_exe);
3910
3911	Utf8Str idStr = mData->mUuid.toString();
3912	/* Leave space for 2 args, as "headless" needs --vrdp off on non-OSE. */
3913	# ifdef RT_OS_WINDOWS
3914	const char * args[] = {path, "--startvm", idStr, 0, 0, 0 };
3915	# else
3916	Utf8Str name = mUserData->mName;
3917	const char * args[] = {path, "--comment", name, "--startvm", idStr, 0, 0, 0 };
3918	# endif
3919	#ifdef VBOX_WITH_VRDP
3920	if (type == "headless")
3921	{
3922	unsigned pos = RT_ELEMENTS(args) - 3;
3923	args[pos++] = "--vrdp";
3924	args[pos] = "off";
3925	}
3926	#endif
3927	if (type == "capture")
3928	{
3929	unsigned pos = RT_ELEMENTS(args) - 3;
3930	args[pos] = "--capture";
3931	}
3932	vrc = RTProcCreate (path, args, env, 0, &pid);
3933	}
3934	#else /* !VBOX_WITH_HEADLESS */
3935	if (0)
3936	;
3937	#endif /* !VBOX_WITH_HEADLESS */
3938	else
3939	{
3940	RTEnvDestroy (env);
3941	return setError (E_INVALIDARG,
3942	tr ("Invalid session type: '%ls'"), aType);
3943	}
3944
3945	RTEnvDestroy (env);
3946
3947	if (RT_FAILURE(vrc))
3948	return setError (VBOX_E_IPRT_ERROR,
3949	tr ("Could not launch a process for the machine '%ls' (%Rrc)"),
3950	mUserData->mName.raw(), vrc);
3951
3952	LogFlowThisFunc(("launched.pid=%d(0x%x)\n", pid, pid));
3953
3954	/*
3955	* Note that we don't leave the lock here before calling the client,
3956	* because it doesn't need to call us back if called with a NULL argument.
3957	* Leaving the lock herer is dangerous because we didn't prepare the
3958	* launch data yet, but the client we've just started may happen to be
3959	* too fast and call openSession() that will fail (because of PID, etc.),
3960	* so that the Machine will never get out of the Spawning session state.
3961	*/
3962
3963	/* inform the session that it will be a remote one */
3964	LogFlowThisFunc(("Calling AssignMachine (NULL)...\n"));
3965	HRESULT rc = aControl->AssignMachine (NULL);
3966	LogFlowThisFunc(("AssignMachine (NULL) returned %08X\n", rc));
3967
3968	if (FAILED (rc))
3969	{
3970	/* restore the session state */
3971	mData->mSession.mState = SessionState_Closed;
3972	/* The failure may occur w/o any error info (from RPC), so provide one */
3973	return setError (VBOX_E_VM_ERROR,
3974	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3975	}
3976
3977	/* attach launch data to the machine */
3978	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3979	mData->mSession.mRemoteControls.push_back (aControl);
3980	mData->mSession.mProgress = aProgress;
3981	mData->mSession.mPid = pid;
3982	mData->mSession.mState = SessionState_Spawning;
3983	mData->mSession.mType = type;
3984
3985	LogFlowThisFuncLeave();
3986	return S_OK;
3987	}
3988
3989	/**
3990	* @note Locks this object for writing, calls the client process
3991	* (outside the lock).
3992	*/
3993	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3994	{
3995	LogFlowThisFuncEnter();
3996
3997	AssertReturn(aControl, E_FAIL);
3998
3999	AutoCaller autoCaller(this);
4000	CheckComRCReturnRC(autoCaller.rc());
4001
4002	AutoWriteLock alock(this);
4003
4004	if (!mData->mRegistered)
4005	return setError (E_UNEXPECTED,
4006	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
4007
4008	LogFlowThisFunc(("mSession.state=%d\n", mData->mSession.mState));
4009
4010	if (mData->mSession.mState != SessionState_Open)
4011	return setError (VBOX_E_INVALID_SESSION_STATE,
4012	tr ("The machine '%ls' does not have an open session"),
4013	mUserData->mName.raw());
4014
4015	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
4016
4017	/*
4018	* Get the console from the direct session (note that we don't leave the
4019	* lock here because GetRemoteConsole must not call us back).
4020	*/
4021	ComPtr<IConsole> console;
4022	HRESULT rc = mData->mSession.mDirectControl->
4023	GetRemoteConsole (console.asOutParam());
4024	if (FAILED (rc))
4025	{
4026	/* The failure may occur w/o any error info (from RPC), so provide one */
4027	return setError (VBOX_E_VM_ERROR,
4028	tr ("Failed to get a console object from the direct session (%Rrc)"), rc);
4029	}
4030
4031	ComAssertRet (!console.isNull(), E_FAIL);
4032
4033	ComObjPtr<SessionMachine> sessionMachine = mData->mSession.mMachine;
4034	AssertReturn(!sessionMachine.isNull(), E_FAIL);
4035
4036	/*
4037	* Leave the lock before calling the client process. It's safe here
4038	* since the only thing to do after we get the lock again is to add
4039	* the remote control to the list (which doesn't directly influence
4040	* anything).
4041	*/
4042	alock.leave();
4043
4044	/* attach the remote session to the machine */
4045	LogFlowThisFunc(("Calling AssignRemoteMachine()...\n"));
4046	rc = aControl->AssignRemoteMachine (sessionMachine, console);
4047	LogFlowThisFunc(("AssignRemoteMachine() returned %08X\n", rc));
4048
4049	/* The failure may occur w/o any error info (from RPC), so provide one */
4050	if (FAILED (rc))
4051	return setError (VBOX_E_VM_ERROR,
4052	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
4053
4054	alock.enter();
4055
4056	/* need to revalidate the state after entering the lock again */
4057	if (mData->mSession.mState != SessionState_Open)
4058	{
4059	aControl->Uninitialize();
4060
4061	return setError (VBOX_E_INVALID_SESSION_STATE,
4062	tr ("The machine '%ls' does not have an open session"),
4063	mUserData->mName.raw());
4064	}
4065
4066	/* store the control in the list */
4067	mData->mSession.mRemoteControls.push_back (aControl);
4068
4069	LogFlowThisFuncLeave();
4070	return S_OK;
4071	}
4072
4073	/**
4074	* Returns @c true if the given machine has an open direct session and returns
4075	* the session machine instance and additional session data (on some platforms)
4076	* if so.
4077	*
4078	* Note that when the method returns @c false, the arguments remain unchanged.
4079	*
4080	* @param aMachine Session machine object.
4081	* @param aControl Direct session control object (optional).
4082	* @param aIPCSem Mutex IPC semaphore handle for this machine (optional).
4083	*
4084	* @note locks this object for reading.
4085	*/
4086	#if defined (RT_OS_WINDOWS)
4087	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4088	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4089	HANDLE aIPCSem /= NULL*/,
4090	bool aAllowClosing /= false/)
4091	#elif defined (RT_OS_OS2)
4092	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4093	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4094	HMTX aIPCSem /= NULL*/,
4095	bool aAllowClosing /= false/)
4096	#else
4097	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4098	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4099	bool aAllowClosing /= false/)
4100	#endif
4101	{
4102	AutoLimitedCaller autoCaller(this);
4103	AssertComRCReturn (autoCaller.rc(), false);
4104
4105	/* just return false for inaccessible machines */
4106	if (autoCaller.state() != Ready)
4107	return false;
4108
4109	AutoReadLock alock(this);
4110
4111	if (mData->mSession.mState == SessionState_Open \|\|
4112	(aAllowClosing && mData->mSession.mState == SessionState_Closing))
4113	{
4114	AssertReturn(!mData->mSession.mMachine.isNull(), false);
4115
4116	aMachine = mData->mSession.mMachine;
4117
4118	if (aControl != NULL)
4119	*aControl = mData->mSession.mDirectControl;
4120
4121	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4122	/* Additional session data */
4123	if (aIPCSem != NULL)
4124	*aIPCSem = aMachine->mIPCSem;
4125	#endif
4126	return true;
4127	}
4128
4129	return false;
4130	}
4131
4132	/**
4133	* Returns @c true if the given machine has an spawning direct session and
4134	* returns and additional session data (on some platforms) if so.
4135	*
4136	* Note that when the method returns @c false, the arguments remain unchanged.
4137	*
4138	* @param aPID PID of the spawned direct session process.
4139	*
4140	* @note locks this object for reading.
4141	*/
4142	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4143	bool Machine::isSessionSpawning (RTPROCESS aPID /= NULL*/)
4144	#else
4145	bool Machine::isSessionSpawning()
4146	#endif
4147	{
4148	AutoLimitedCaller autoCaller(this);
4149	AssertComRCReturn (autoCaller.rc(), false);
4150
4151	/* just return false for inaccessible machines */
4152	if (autoCaller.state() != Ready)
4153	return false;
4154
4155	AutoReadLock alock(this);
4156
4157	if (mData->mSession.mState == SessionState_Spawning)
4158	{
4159	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4160	/* Additional session data */
4161	if (aPID != NULL)
4162	{
4163	AssertReturn(mData->mSession.mPid != NIL_RTPROCESS, false);
4164	*aPID = mData->mSession.mPid;
4165	}
4166	#endif
4167	return true;
4168	}
4169
4170	return false;
4171	}
4172
4173	/**
4174	* Called from the client watcher thread to check for unexpected client process
4175	* death during Session_Spawning state (e.g. before it successfully opened a
4176	* direct session).
4177	*
4178	* On Win32 and on OS/2, this method is called only when we've got the
4179	* direct client's process termination notification, so it always returns @c
4180	* true.
4181	*
4182	* On other platforms, this method returns @c true if the client process is
4183	* terminated and @c false if it's still alive.
4184	*
4185	* @note Locks this object for writing.
4186	*/
4187	bool Machine::checkForSpawnFailure()
4188	{
4189	AutoCaller autoCaller(this);
4190	if (!autoCaller.isOk())
4191	{
4192	/* nothing to do */
4193	LogFlowThisFunc(("Already uninitialized!"));
4194	return true;
4195	}
4196
4197	/* VirtualBox::addProcessToReap() needs a write lock */
4198	AutoMultiWriteLock2 alock (mParent, this);
4199
4200	if (mData->mSession.mState != SessionState_Spawning)
4201	{
4202	/* nothing to do */
4203	LogFlowThisFunc(("Not spawning any more!"));
4204	return true;
4205	}
4206
4207	HRESULT rc = S_OK;
4208
4209	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4210
4211	/* the process was already unexpectedly terminated, we just need to set an
4212	* error and finalize session spawning */
4213	rc = setError (E_FAIL,
4214	tr ("Virtual machine '%ls' has terminated unexpectedly "
4215	"during startup"),
4216	name().raw());
4217	#else
4218
4219	RTPROCSTATUS status;
4220	int vrc = ::RTProcWait (mData->mSession.mPid, RTPROCWAIT_FLAGS_NOBLOCK,
4221	&status);
4222
4223	if (vrc != VERR_PROCESS_RUNNING)
4224	rc = setError (E_FAIL,
4225	tr ("Virtual machine '%ls' has terminated unexpectedly "
4226	"during startup"),
4227	name().raw());
4228	#endif
4229
4230	if (FAILED (rc))
4231	{
4232	/* Close the remote session, remove the remote control from the list
4233	* and reset session state to Closed (@note keep the code in sync with
4234	* the relevant part in checkForSpawnFailure()). */
4235
4236	Assert (mData->mSession.mRemoteControls.size() == 1);
4237	if (mData->mSession.mRemoteControls.size() == 1)
4238	{
4239	ErrorInfoKeeper eik;
4240	mData->mSession.mRemoteControls.front()->Uninitialize();
4241	}
4242
4243	mData->mSession.mRemoteControls.clear();
4244	mData->mSession.mState = SessionState_Closed;
4245
4246	/* finalize the progress after setting the state, for consistency */
4247	mData->mSession.mProgress->notifyComplete (rc);
4248	mData->mSession.mProgress.setNull();
4249
4250	mParent->addProcessToReap (mData->mSession.mPid);
4251	mData->mSession.mPid = NIL_RTPROCESS;
4252
4253	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
4254	return true;
4255	}
4256
4257	return false;
4258	}
4259
4260	/**
4261	* Checks that the registered flag of the machine can be set according to
4262	* the argument and sets it. On success, commits and saves all settings.
4263	*
4264	* @note When this machine is inaccessible, the only valid value for \a
4265	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
4266	* inaccessible machines are not currently supported. Note that unregistering
4267	* an inaccessible machine will \b uninitialize this machine object. Therefore,
4268	* the caller must make sure there are no active Machine::addCaller() calls
4269	* on the current thread because this will block Machine::uninit().
4270	*
4271	* @note Must be called from mParent's write lock. Locks this object and
4272	* children for writing.
4273	*/
4274	HRESULT Machine::trySetRegistered (BOOL aRegistered)
4275	{
4276	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
4277
4278	AutoLimitedCaller autoCaller(this);
4279	AssertComRCReturnRC(autoCaller.rc());
4280
4281	AutoWriteLock alock(this);
4282
4283	/* wait for state dependants to drop to zero */
4284	ensureNoStateDependencies();
4285
4286	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
4287
4288	if (!mData->mAccessible)
4289	{
4290	/* A special case: the machine is not accessible. */
4291
4292	/* inaccessible machines can only be unregistered */
4293	AssertReturn(!aRegistered, E_FAIL);
4294
4295	/* Uninitialize ourselves here because currently there may be no
4296	* unregistered that are inaccessible (this state combination is not
4297	* supported). Note releasing the caller and leaving the lock before
4298	* calling uninit() */
4299
4300	alock.leave();
4301	autoCaller.release();
4302
4303	uninit();
4304
4305	return S_OK;
4306	}
4307
4308	AssertReturn(autoCaller.state() == Ready, E_FAIL);
4309
4310	/* we will probably modify these and want to prevent concurrent
4311	* modifications until we finish */
4312	AutoWriteLock dvdLock (mDVDDrive);
4313	AutoWriteLock floppyLock (mFloppyDrive);
4314
4315	if (aRegistered)
4316	{
4317	if (mData->mRegistered)
4318	return setError (VBOX_E_INVALID_OBJECT_STATE,
4319	tr ("The machine '%ls' with UUID {%s} is already registered"),
4320	mUserData->mName.raw(),
4321	mData->mUuid.toString().raw());
4322	}
4323	else
4324	{
4325	if (mData->mMachineState == MachineState_Saved)
4326	return setError (VBOX_E_INVALID_VM_STATE,
4327	tr ("Cannot unregister the machine '%ls' because it "
4328	"is in the Saved state"),
4329	mUserData->mName.raw());
4330
4331	size_t snapshotCount = 0;
4332	if (mData->mFirstSnapshot)
4333	snapshotCount = mData->mFirstSnapshot->getAllChildrenCount() + 1;
4334	if (snapshotCount)
4335	return setError (VBOX_E_INVALID_OBJECT_STATE,
4336	tr ("Cannot unregister the machine '%ls' because it "
4337	"has %d snapshots"),
4338	mUserData->mName.raw(), snapshotCount);
4339
4340	if (mData->mSession.mState != SessionState_Closed)
4341	return setError (VBOX_E_INVALID_OBJECT_STATE,
4342	tr ("Cannot unregister the machine '%ls' because it has an "
4343	"open session"),
4344	mUserData->mName.raw());
4345
4346	if (mHDData->mAttachments.size() != 0)
4347	return setError (VBOX_E_INVALID_OBJECT_STATE,
4348	tr ("Cannot unregister the machine '%ls' because it "
4349	"has %d hard disks attached"),
4350	mUserData->mName.raw(), mHDData->mAttachments.size());
4351
4352	/* Note that we do not prevent unregistration of a DVD or Floppy image
4353	* is attached: as opposed to hard disks detaching such an image
4354	* implicitly in this method (which we will do below) won't have any
4355	* side effects (like detached orphan base and diff hard disks etc).*/
4356	}
4357
4358	HRESULT rc = S_OK;
4359
4360	/* Ensure the settings are saved. If we are going to be registered and
4361	* isConfigLocked() is FALSE then it means that no config file exists yet,
4362	* so create it by calling saveSettings() too. */
4363	if (isModified() \|\| (aRegistered && !isConfigLocked()))
4364	{
4365	rc = saveSettings();
4366	CheckComRCReturnRC(rc);
4367	}
4368
4369	/* Implicitly detach DVD/Floppy */
4370	rc = mDVDDrive->unmount();
4371	if (SUCCEEDED(rc))
4372	rc = mFloppyDrive->unmount();
4373
4374	if (SUCCEEDED(rc))
4375	{
4376	/* we may have had implicit modifications we want to fix on success */
4377	commit();
4378
4379	mData->mRegistered = aRegistered;
4380	}
4381	else
4382	{
4383	/* we may have had implicit modifications we want to cancel on failure*/
4384	rollback (false /* aNotify */);
4385	}
4386
4387	return rc;
4388	}
4389
4390	/**
4391	* Increases the number of objects dependent on the machine state or on the
4392	* registered state. Guarantees that these two states will not change at least
4393	* until #releaseStateDependency() is called.
4394	*
4395	* Depending on the @a aDepType value, additional state checks may be made.
4396	* These checks will set extended error info on failure. See
4397	* #checkStateDependency() for more info.
4398	*
4399	* If this method returns a failure, the dependency is not added and the caller
4400	* is not allowed to rely on any particular machine state or registration state
4401	* value and may return the failed result code to the upper level.
4402	*
4403	* @param aDepType Dependency type to add.
4404	* @param aState Current machine state (NULL if not interested).
4405	* @param aRegistered Current registered state (NULL if not interested).
4406	*
4407	* @note Locks this object for writing.
4408	*/
4409	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
4410	MachineState_T aState / = NULL */,
4411	BOOL aRegistered / = NULL */)
4412	{
4413	AutoCaller autoCaller(this);
4414	AssertComRCReturnRC(autoCaller.rc());
4415
4416	AutoWriteLock alock(this);
4417
4418	HRESULT rc = checkStateDependency(aDepType);
4419	CheckComRCReturnRC(rc);
4420
4421	{
4422	if (mData->mMachineStateChangePending != 0)
4423	{
4424	/* ensureNoStateDependencies() is waiting for state dependencies to
4425	* drop to zero so don't add more. It may make sense to wait a bit
4426	* and retry before reporting an error (since the pending state
4427	* transition should be really quick) but let's just assert for
4428	* now to see if it ever happens on practice. */
4429
4430	AssertFailed();
4431
4432	return setError (E_ACCESSDENIED,
4433	tr ("Machine state change is in progress. "
4434	"Please retry the operation later."));
4435	}
4436
4437	++ mData->mMachineStateDeps;
4438	Assert (mData->mMachineStateDeps != 0 /* overflow */);
4439	}
4440
4441	if (aState)
4442	*aState = mData->mMachineState;
4443	if (aRegistered)
4444	*aRegistered = mData->mRegistered;
4445
4446	return S_OK;
4447	}
4448
4449	/**
4450	* Decreases the number of objects dependent on the machine state.
4451	* Must always complete the #addStateDependency() call after the state
4452	* dependency is no more necessary.
4453	*/
4454	void Machine::releaseStateDependency()
4455	{
4456	AutoCaller autoCaller(this);
4457	AssertComRCReturnVoid (autoCaller.rc());
4458
4459	AutoWriteLock alock(this);
4460
4461	AssertReturnVoid (mData->mMachineStateDeps != 0
4462	/* releaseStateDependency() w/o addStateDependency()? */);
4463	-- mData->mMachineStateDeps;
4464
4465	if (mData->mMachineStateDeps == 0)
4466	{
4467	/* inform ensureNoStateDependencies() that there are no more deps */
4468	if (mData->mMachineStateChangePending != 0)
4469	{
4470	Assert (mData->mMachineStateDepsSem != NIL_RTSEMEVENTMULTI);
4471	RTSemEventMultiSignal (mData->mMachineStateDepsSem);
4472	}
4473	}
4474	}
4475
4476	// protected methods
4477	/////////////////////////////////////////////////////////////////////////////
4478
4479	/**
4480	* Performs machine state checks based on the @a aDepType value. If a check
4481	* fails, this method will set extended error info, otherwise it will return
4482	* S_OK. It is supposed, that on failure, the caller will immedieately return
4483	* the return value of this method to the upper level.
4484	*
4485	* When @a aDepType is AnyStateDep, this method always returns S_OK.
4486	*
4487	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
4488	* current state of this machine object allows to change settings of the
4489	* machine (i.e. the machine is not registered, or registered but not running
4490	* and not saved). It is useful to call this method from Machine setters
4491	* before performing any change.
4492	*
4493	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
4494	* as for MutableStateDep except that if the machine is saved, S_OK is also
4495	* returned. This is useful in setters which allow changing machine
4496	* properties when it is in the saved state.
4497	*
4498	* @param aDepType Dependency type to check.
4499	*
4500	* @note Non Machine based classes should use #addStateDependency() and
4501	* #releaseStateDependency() methods or the smart AutoStateDependency
4502	* template.
4503	*
4504	* @note This method must be called from under this object's read or write
4505	* lock.
4506	*/
4507	HRESULT Machine::checkStateDependency(StateDependency aDepType)
4508	{
4509	switch (aDepType)
4510	{
4511	case AnyStateDep:
4512	{
4513	break;
4514	}
4515	case MutableStateDep:
4516	{
4517	if (mData->mRegistered &&
4518	(mType != IsSessionMachine \|\|
4519	mData->mMachineState > MachineState_Paused \|\|
4520	mData->mMachineState == MachineState_Saved))
4521	return setError (VBOX_E_INVALID_VM_STATE,
4522	tr ("The machine is not mutable (state is %d)"),
4523	mData->mMachineState);
4524	break;
4525	}
4526	case MutableOrSavedStateDep:
4527	{
4528	if (mData->mRegistered &&
4529	(mType != IsSessionMachine \|\|
4530	mData->mMachineState > MachineState_Paused))
4531	return setError (VBOX_E_INVALID_VM_STATE,
4532	tr ("The machine is not mutable (state is %d)"),
4533	mData->mMachineState);
4534	break;
4535	}
4536	}
4537
4538	return S_OK;
4539	}
4540
4541	/**
4542	* Helper to initialize all associated child objects and allocate data
4543	* structures.
4544	*
4545	* This method must be called as a part of the object's initialization procedure
4546	* (usually done in the #init() method).
4547	*
4548	* @note Must be called only from #init() or from #registeredInit().
4549	*/
4550	HRESULT Machine::initDataAndChildObjects()
4551	{
4552	AutoCaller autoCaller(this);
4553	AssertComRCReturnRC(autoCaller.rc());
4554	AssertComRCReturn (autoCaller.state() == InInit \|\|
4555	autoCaller.state() == Limited, E_FAIL);
4556
4557	AssertReturn(!mData->mAccessible, E_FAIL);
4558
4559	/* allocate data structures */
4560	mSSData.allocate();
4561	mUserData.allocate();
4562	mHWData.allocate();
4563	mHDData.allocate();
4564	mStorageControllers.allocate();
4565
4566	/* initialize mOSTypeId */
4567	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
4568
4569	/* create associated BIOS settings object */
4570	unconst(mBIOSSettings).createObject();
4571	mBIOSSettings->init (this);
4572
4573	#ifdef VBOX_WITH_VRDP
4574	/* create an associated VRDPServer object (default is disabled) */
4575	unconst(mVRDPServer).createObject();
4576	mVRDPServer->init (this);
4577	#endif
4578
4579	/* create an associated DVD drive object */
4580	unconst(mDVDDrive).createObject();
4581	mDVDDrive->init (this);
4582
4583	/* create an associated floppy drive object */
4584	unconst(mFloppyDrive).createObject();
4585	mFloppyDrive->init (this);
4586
4587	/* create associated serial port objects */
4588	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4589	{
4590	unconst(mSerialPorts [slot]).createObject();
4591	mSerialPorts [slot]->init (this, slot);
4592	}
4593
4594	/* create associated parallel port objects */
4595	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4596	{
4597	unconst(mParallelPorts [slot]).createObject();
4598	mParallelPorts [slot]->init (this, slot);
4599	}
4600
4601	/* create the audio adapter object (always present, default is disabled) */
4602	unconst(mAudioAdapter).createObject();
4603	mAudioAdapter->init (this);
4604
4605	/* create the USB controller object (always present, default is disabled) */
4606	unconst(mUSBController).createObject();
4607	mUSBController->init (this);
4608
4609	/* create associated network adapter objects */
4610	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4611	{
4612	unconst(mNetworkAdapters [slot]).createObject();
4613	mNetworkAdapters [slot]->init (this, slot);
4614	}
4615
4616	return S_OK;
4617	}
4618
4619	/**
4620	* Helper to uninitialize all associated child objects and to free all data
4621	* structures.
4622	*
4623	* This method must be called as a part of the object's uninitialization
4624	* procedure (usually done in the #uninit() method).
4625	*
4626	* @note Must be called only from #uninit() or from #registeredInit().
4627	*/
4628	void Machine::uninitDataAndChildObjects()
4629	{
4630	AutoCaller autoCaller(this);
4631	AssertComRCReturnVoid (autoCaller.rc());
4632	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
4633	autoCaller.state() == Limited);
4634
4635	/* uninit all children using addDependentChild()/removeDependentChild()
4636	* in their init()/uninit() methods */
4637	uninitDependentChildren();
4638
4639	/* tell all our other child objects we've been uninitialized */
4640
4641	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4642	{
4643	if (mNetworkAdapters [slot])
4644	{
4645	mNetworkAdapters [slot]->uninit();
4646	unconst(mNetworkAdapters [slot]).setNull();
4647	}
4648	}
4649
4650	if (mUSBController)
4651	{
4652	mUSBController->uninit();
4653	unconst(mUSBController).setNull();
4654	}
4655
4656	if (mAudioAdapter)
4657	{
4658	mAudioAdapter->uninit();
4659	unconst(mAudioAdapter).setNull();
4660	}
4661
4662	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4663	{
4664	if (mParallelPorts [slot])
4665	{
4666	mParallelPorts [slot]->uninit();
4667	unconst(mParallelPorts [slot]).setNull();
4668	}
4669	}
4670
4671	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4672	{
4673	if (mSerialPorts [slot])
4674	{
4675	mSerialPorts [slot]->uninit();
4676	unconst(mSerialPorts [slot]).setNull();
4677	}
4678	}
4679
4680	if (mFloppyDrive)
4681	{
4682	mFloppyDrive->uninit();
4683	unconst(mFloppyDrive).setNull();
4684	}
4685
4686	if (mDVDDrive)
4687	{
4688	mDVDDrive->uninit();
4689	unconst(mDVDDrive).setNull();
4690	}
4691
4692	#ifdef VBOX_WITH_VRDP
4693	if (mVRDPServer)
4694	{
4695	mVRDPServer->uninit();
4696	unconst(mVRDPServer).setNull();
4697	}
4698	#endif
4699
4700	if (mBIOSSettings)
4701	{
4702	mBIOSSettings->uninit();
4703	unconst(mBIOSSettings).setNull();
4704	}
4705
4706	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
4707	* instance is uninitialized; SessionMachine instances refer to real
4708	* Machine hard disks). This is necessary for a clean re-initialization of
4709	* the VM after successfully re-checking the accessibility state. Note
4710	* that in case of normal Machine or SnapshotMachine uninitialization (as
4711	* a result of unregistering or discarding the snapshot), outdated hard
4712	* disk attachments will already be uninitialized and deleted, so this
4713	* code will not affect them. */
4714	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
4715	{
4716	for (HDData::AttachmentList::const_iterator it =
4717	mHDData->mAttachments.begin();
4718	it != mHDData->mAttachments.end();
4719	++ it)
4720	{
4721	HRESULT rc = (*it)->hardDisk()->detachFrom (mData->mUuid,
4722	snapshotId());
4723	AssertComRC (rc);
4724	}
4725	}
4726
4727	if (mType == IsMachine)
4728	{
4729	/* reset some important fields of mData */
4730	mData->mCurrentSnapshot.setNull();
4731	mData->mFirstSnapshot.setNull();
4732	}
4733
4734	/* free data structures (the essential mData structure is not freed here
4735	* since it may be still in use) */
4736	mHDData.free();
4737	mStorageControllers.free();
4738	mHWData.free();
4739	mUserData.free();
4740	mSSData.free();
4741	}
4742
4743	/**
4744	* Makes sure that there are no machine state dependants. If necessary, waits
4745	* for the number of dependants to drop to zero.
4746	*
4747	* Make sure this method is called from under this object's write lock to
4748	* guarantee that no new dependants may be added when this method returns
4749	* control to the caller.
4750	*
4751	* @note Locks this object for writing. The lock will be released while waiting
4752	* (if necessary).
4753	*
4754	* @warning To be used only in methods that change the machine state!
4755	*/
4756	void Machine::ensureNoStateDependencies()
4757	{
4758	AssertReturnVoid (isWriteLockOnCurrentThread());
4759
4760	AutoWriteLock alock(this);
4761
4762	/* Wait for all state dependants if necessary */
4763	if (mData->mMachineStateDeps != 0)
4764	{
4765	/* lazy semaphore creation */
4766	if (mData->mMachineStateDepsSem == NIL_RTSEMEVENTMULTI)
4767	RTSemEventMultiCreate (&mData->mMachineStateDepsSem);
4768
4769	LogFlowThisFunc(("Waiting for state deps (%d) to drop to zero...\n",
4770	mData->mMachineStateDeps));
4771
4772	++ mData->mMachineStateChangePending;
4773
4774	/* reset the semaphore before waiting, the last dependant will signal
4775	* it */
4776	RTSemEventMultiReset (mData->mMachineStateDepsSem);
4777
4778	alock.leave();
4779
4780	RTSemEventMultiWait (mData->mMachineStateDepsSem, RT_INDEFINITE_WAIT);
4781
4782	alock.enter();
4783
4784	-- mData->mMachineStateChangePending;
4785	}
4786	}
4787
4788	/**
4789	* Changes the machine state and informs callbacks.
4790	*
4791	* This method is not intended to fail so it either returns S_OK or asserts (and
4792	* returns a failure).
4793	*
4794	* @note Locks this object for writing.
4795	*/
4796	HRESULT Machine::setMachineState (MachineState_T aMachineState)
4797	{
4798	LogFlowThisFuncEnter();
4799	LogFlowThisFunc(("aMachineState=%d\n", aMachineState));
4800
4801	AutoCaller autoCaller(this);
4802	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
4803
4804	AutoWriteLock alock(this);
4805
4806	/* wait for state dependants to drop to zero */
4807	ensureNoStateDependencies();
4808
4809	if (mData->mMachineState != aMachineState)
4810	{
4811	mData->mMachineState = aMachineState;
4812
4813	RTTimeNow (&mData->mLastStateChange);
4814
4815	mParent->onMachineStateChange(mData->mUuid, aMachineState);
4816	}
4817
4818	LogFlowThisFuncLeave();
4819	return S_OK;
4820	}
4821
4822	/**
4823	* Searches for a shared folder with the given logical name
4824	* in the collection of shared folders.
4825	*
4826	* @param aName logical name of the shared folder
4827	* @param aSharedFolder where to return the found object
4828	* @param aSetError whether to set the error info if the folder is
4829	* not found
4830	* @return
4831	* S_OK when found or VBOX_E_OBJECT_NOT_FOUND when not found
4832	*
4833	* @note
4834	* must be called from under the object's lock!
4835	*/
4836	HRESULT Machine::findSharedFolder (CBSTR aName,
4837	ComObjPtr<SharedFolder> &aSharedFolder,
4838	bool aSetError /* = false */)
4839	{
4840	bool found = false;
4841	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
4842	!found && it != mHWData->mSharedFolders.end();
4843	++ it)
4844	{
4845	AutoWriteLock alock(*it);
4846	found = (*it)->name() == aName;
4847	if (found)
4848	aSharedFolder = *it;
4849	}
4850
4851	HRESULT rc = found ? S_OK : VBOX_E_OBJECT_NOT_FOUND;
4852
4853	if (aSetError && !found)
4854	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
4855
4856	return rc;
4857	}
4858
4859	/**
4860	* Loads all the VM settings by walking down the <Machine> node.
4861	*
4862	* @param aRegistered true when the machine is being loaded on VirtualBox
4863	* startup
4864	*
4865	* @note This method is intended to be called only from init(), so it assumes
4866	* all machine data fields have appropriate default values when it is called.
4867	*
4868	* @note Doesn't lock any objects.
4869	*/
4870	HRESULT Machine::loadSettings (bool aRegistered)
4871	{
4872	LogFlowThisFuncEnter();
4873	AssertReturn(mType == IsMachine, E_FAIL);
4874
4875	AutoCaller autoCaller(this);
4876	AssertReturn(autoCaller.state() == InInit, E_FAIL);
4877
4878	HRESULT rc = S_OK;
4879
4880	try
4881	{
4882	using namespace settings;
4883	using namespace xml;
4884
4885	/* no concurrent file access is possible in init() so open by handle */
4886	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
4887	XmlTreeBackend tree;
4888
4889	rc = VirtualBox::loadSettingsTree_FirstTime (tree, file,
4890	mData->mSettingsFileVersion);
4891	CheckComRCThrowRC (rc);
4892
4893	Key machineNode = tree.rootKey().key ("Machine");
4894
4895	/* uuid (required) */
4896	Guid id = machineNode.value <Guid> ("uuid");
4897
4898	/* If the stored UUID is not empty, it means the registered machine
4899	* is being loaded. Compare the loaded UUID with the stored one taken
4900	* from the global registry. */
4901	if (!mData->mUuid.isEmpty())
4902	{
4903	if (mData->mUuid != id)
4904	{
4905	throw setError (E_FAIL,
4906	tr ("Machine UUID {%RTuuid} in '%ls' doesn't match its "
4907	"UUID {%s} in the registry file '%ls'"),
4908	id.raw(), mData->mConfigFileFull.raw(),
4909	mData->mUuid.toString().raw(),
4910	mParent->settingsFileName().raw());
4911	}
4912	}
4913	else
4914	unconst(mData->mUuid) = id;
4915
4916	/* name (required) */
4917	mUserData->mName = machineNode.stringValue ("name");
4918
4919	/* nameSync (optional, default is true) */
4920	mUserData->mNameSync = machineNode.value <bool> ("nameSync");
4921
4922	/* Description (optional, default is null) */
4923	{
4924	Key descNode = machineNode.findKey ("Description");
4925	if (!descNode.isNull())
4926	mUserData->mDescription = descNode.keyStringValue();
4927	else
4928	mUserData->mDescription.setNull();
4929	}
4930
4931	/* OSType (required) */
4932	{
4933	mUserData->mOSTypeId = machineNode.stringValue ("OSType");
4934
4935	/* look up the object by Id to check it is valid */
4936	ComPtr<IGuestOSType> guestOSType;
4937	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
4938	guestOSType.asOutParam());
4939	CheckComRCThrowRC (rc);
4940	}
4941
4942	/* stateFile (optional) */
4943	{
4944	Bstr stateFilePath = machineNode.stringValue ("stateFile");
4945	if (stateFilePath)
4946	{
4947	Utf8Str stateFilePathFull = stateFilePath;
4948	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4949	if (RT_FAILURE(vrc))
4950	{
4951	throw setError (E_FAIL,
4952	tr ("Invalid saved state file path '%ls' (%Rrc)"),
4953	stateFilePath.raw(), vrc);
4954	}
4955	mSSData->mStateFilePath = stateFilePathFull;
4956	}
4957	else
4958	mSSData->mStateFilePath.setNull();
4959	}
4960
4961	/*
4962	* currentSnapshot ID (optional)
4963	*
4964	* Note that due to XML Schema constaraints, this attribute, when
4965	* present, will guaranteedly refer to an existing snapshot
4966	* definition in XML
4967	*/
4968	Guid currentSnapshotId = machineNode.valueOr <Guid> ("currentSnapshot",
4969	Guid());
4970
4971	/* snapshotFolder (optional) */
4972	{
4973	Bstr folder = machineNode.stringValue ("snapshotFolder");
4974	rc = COMSETTER (SnapshotFolder) (folder);
4975	CheckComRCThrowRC (rc);
4976	}
4977
4978	/* currentStateModified (optional, default is true) */
4979	mData->mCurrentStateModified = machineNode.value <bool> ("currentStateModified");
4980
4981	/* lastStateChange (optional, defaults to now) */
4982	{
4983	RTTIMESPEC now;
4984	RTTimeNow (&now);
4985	mData->mLastStateChange =
4986	machineNode.valueOr <RTTIMESPEC> ("lastStateChange", now);
4987	}
4988
4989	/* aborted (optional, default is false) */
4990	bool aborted = machineNode.value <bool> ("aborted");
4991
4992	/*
4993	* note: all mUserData members must be assigned prior this point because
4994	* we need to commit changes in order to let mUserData be shared by all
4995	* snapshot machine instances.
4996	*/
4997	mUserData.commitCopy();
4998
4999	/* Snapshot node (optional) */
5000	{
5001	Key snapshotNode = machineNode.findKey ("Snapshot");
5002	if (!snapshotNode.isNull())
5003	{
5004	/* read all snapshots recursively */
5005	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
5006	CheckComRCThrowRC (rc);
5007	}
5008	}
5009
5010	Key hardwareNode = machineNode.key("Hardware");
5011
5012	/* Hardware node (required) */
5013	rc = loadHardware (hardwareNode);
5014	CheckComRCThrowRC (rc);
5015
5016	/* Load storage controllers */
5017	rc = loadStorageControllers (machineNode.key ("StorageControllers"), aRegistered);
5018	CheckComRCThrowRC (rc);
5019
5020	/*
5021	* NOTE: the assignment below must be the last thing to do,
5022	* otherwise it will be not possible to change the settings
5023	* somewehere in the code above because all setters will be
5024	* blocked by checkStateDependency(MutableStateDep).
5025	*/
5026
5027	/* set the machine state to Aborted or Saved when appropriate */
5028	if (aborted)
5029	{
5030	Assert (!mSSData->mStateFilePath);
5031	mSSData->mStateFilePath.setNull();
5032
5033	/* no need to use setMachineState() during init() */
5034	mData->mMachineState = MachineState_Aborted;
5035	}
5036	else if (mSSData->mStateFilePath)
5037	{
5038	/* no need to use setMachineState() during init() */
5039	mData->mMachineState = MachineState_Saved;
5040	}
5041	}
5042	catch (HRESULT err)
5043	{
5044	/* we assume that error info is set by the thrower */
5045	rc = err;
5046	}
5047	catch (...)
5048	{
5049	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5050	}
5051
5052	LogFlowThisFuncLeave();
5053	return rc;
5054	}
5055
5056	/**
5057	* Recursively loads all snapshots starting from the given.
5058	*
5059	* @param aNode <Snapshot> node.
5060	* @param aCurSnapshotId Current snapshot ID from the settings file.
5061	* @param aParentSnapshot Parent snapshot.
5062	*/
5063	HRESULT Machine::loadSnapshot (const settings::Key &aNode,
5064	const Guid &aCurSnapshotId,
5065	Snapshot *aParentSnapshot)
5066	{
5067	using namespace settings;
5068
5069	AssertReturn(!aNode.isNull(), E_INVALIDARG);
5070	AssertReturn(mType == IsMachine, E_FAIL);
5071
5072	/* create a snapshot machine object */
5073	ComObjPtr<SnapshotMachine> snapshotMachine;
5074	snapshotMachine.createObject();
5075
5076	HRESULT rc = S_OK;
5077
5078	/* required */
5079	Guid uuid = aNode.value <Guid> ("uuid");
5080
5081	{
5082	/* optional */
5083	Bstr stateFilePath = aNode.stringValue ("stateFile");
5084	if (stateFilePath)
5085	{
5086	Utf8Str stateFilePathFull = stateFilePath;
5087	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
5088	if (RT_FAILURE(vrc))
5089	return setError (E_FAIL,
5090	tr ("Invalid saved state file path '%ls' (%Rrc)"),
5091	stateFilePath.raw(), vrc);
5092
5093	stateFilePath = stateFilePathFull;
5094	}
5095
5096	/* Hardware node (required) */
5097	Key hardwareNode = aNode.key ("Hardware");
5098
5099	/* StorageControllers node (required) */
5100	Key storageNode = aNode.key ("StorageControllers");
5101
5102	/* initialize the snapshot machine */
5103	rc = snapshotMachine->init (this, hardwareNode, storageNode,
5104	uuid, stateFilePath);
5105	CheckComRCReturnRC(rc);
5106	}
5107
5108	/* create a snapshot object */
5109	ComObjPtr<Snapshot> snapshot;
5110	snapshot.createObject();
5111
5112	{
5113	/* required */
5114	Bstr name = aNode.stringValue ("name");
5115
5116	/* required */
5117	RTTIMESPEC timeStamp = aNode.value <RTTIMESPEC> ("timeStamp");
5118
5119	/* optional */
5120	Bstr description;
5121	{
5122	Key descNode = aNode.findKey ("Description");
5123	if (!descNode.isNull())
5124	description = descNode.keyStringValue();
5125	}
5126
5127	/* initialize the snapshot */
5128	rc = snapshot->init(mParent, // VirtualBox object
5129	uuid,
5130	name,
5131	description,
5132	timeStamp,
5133	snapshotMachine,
5134	aParentSnapshot);
5135	CheckComRCReturnRC(rc);
5136	}
5137
5138	/* memorize the first snapshot if necessary */
5139	if (!mData->mFirstSnapshot)
5140	mData->mFirstSnapshot = snapshot;
5141
5142	/* memorize the current snapshot when appropriate */
5143	if ( !mData->mCurrentSnapshot
5144	&& snapshot->getId() == aCurSnapshotId
5145	)
5146	mData->mCurrentSnapshot = snapshot;
5147
5148	/* Snapshots node (optional) */
5149	{
5150	Key snapshotsNode = aNode.findKey ("Snapshots");
5151	if (!snapshotsNode.isNull())
5152	{
5153	Key::List children = snapshotsNode.keys ("Snapshot");
5154	for (Key::List::const_iterator it = children.begin();
5155	it != children.end(); ++ it)
5156	{
5157	rc = loadSnapshot ((*it), aCurSnapshotId, snapshot);
5158	CheckComRCBreakRC (rc);
5159	}
5160	}
5161	}
5162
5163	return rc;
5164	}
5165
5166	/**
5167	* @param aNode <Hardware> node.
5168	*/
5169	HRESULT Machine::loadHardware (const settings::Key &aNode)
5170	{
5171	using namespace settings;
5172
5173	AssertReturn(!aNode.isNull(), E_INVALIDARG);
5174	AssertReturn(mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5175
5176	HRESULT rc = S_OK;
5177
5178	/* The hardware version attribute (optional). */
5179	mHWData->mHWVersion = aNode.stringValue ("version");
5180
5181	/* CPU node (currently not required) */
5182	{
5183	/* default value in case the node is not there */
5184	mHWData->mHWVirtExEnabled = true;
5185	mHWData->mHWVirtExNestedPagingEnabled = false;
5186	mHWData->mHWVirtExVPIDEnabled = false;
5187	mHWData->mPAEEnabled = false;
5188
5189	Key cpuNode = aNode.findKey ("CPU");
5190	if (!cpuNode.isNull())
5191	{
5192	Key hwVirtExNode = cpuNode.key ("HardwareVirtEx");
5193	if (!hwVirtExNode.isNull())
5194	{
5195	const char *enabled = hwVirtExNode.stringValue ("enabled");
5196	if (strcmp (enabled, "true") == 0)
5197	mHWData->mHWVirtExEnabled = true;
5198	else
5199	mHWData->mHWVirtExEnabled = false;
5200	}
5201	/* HardwareVirtExNestedPaging (optional, default is false) */
5202	Key HWVirtExNestedPagingNode = cpuNode.findKey ("HardwareVirtExNestedPaging");
5203	if (!HWVirtExNestedPagingNode.isNull())
5204	{
5205	mHWData->mHWVirtExNestedPagingEnabled = HWVirtExNestedPagingNode.value <bool> ("enabled");
5206	}
5207
5208	/* HardwareVirtExVPID (optional, default is false) */
5209	Key HWVirtExVPIDNode = cpuNode.findKey ("HardwareVirtExVPID");
5210	if (!HWVirtExVPIDNode.isNull())
5211	{
5212	mHWData->mHWVirtExVPIDEnabled = HWVirtExVPIDNode.value <bool> ("enabled");
5213	}
5214
5215	/* PAE (optional, default is false) */
5216	Key PAENode = cpuNode.findKey ("PAE");
5217	if (!PAENode.isNull())
5218	{
5219	mHWData->mPAEEnabled = PAENode.value <bool> ("enabled");
5220	}
5221
5222	/* CPUCount (optional, default is 1) */
5223	mHWData->mCPUCount = cpuNode.value <ULONG> ("count");
5224	}
5225	}
5226
5227	/* Memory node (required) */
5228	{
5229	Key memoryNode = aNode.key ("Memory");
5230
5231	mHWData->mMemorySize = memoryNode.value <ULONG> ("RAMSize");
5232	}
5233
5234	/* Boot node (required) */
5235	{
5236	/* reset all boot order positions to NoDevice */
5237	for (size_t i = 0; i < RT_ELEMENTS (mHWData->mBootOrder); i++)
5238	mHWData->mBootOrder [i] = DeviceType_Null;
5239
5240	Key bootNode = aNode.key ("Boot");
5241
5242	Key::List orderNodes = bootNode.keys ("Order");
5243	for (Key::List::const_iterator it = orderNodes.begin();
5244	it != orderNodes.end(); ++ it)
5245	{
5246	/* position (required) */
5247	/* position unicity is guaranteed by XML Schema */
5248	uint32_t position = (*it).value <uint32_t> ("position");
5249	-- position;
5250	Assert (position < RT_ELEMENTS (mHWData->mBootOrder));
5251
5252	/* device (required) */
5253	const char device = (it).stringValue ("device");
5254	if (strcmp (device, "None") == 0)
5255	mHWData->mBootOrder [position] = DeviceType_Null;
5256	else if (strcmp (device, "Floppy") == 0)
5257	mHWData->mBootOrder [position] = DeviceType_Floppy;
5258	else if (strcmp (device, "DVD") == 0)
5259	mHWData->mBootOrder [position] = DeviceType_DVD;
5260	else if (strcmp (device, "HardDisk") == 0)
5261	mHWData->mBootOrder [position] = DeviceType_HardDisk;
5262	else if (strcmp (device, "Network") == 0)
5263	mHWData->mBootOrder [position] = DeviceType_Network;
5264	else
5265	ComAssertMsgFailed (("Invalid device: %s", device));
5266	}
5267	}
5268
5269	/* Display node (required) */
5270	{
5271	Key displayNode = aNode.key ("Display");
5272
5273	mHWData->mVRAMSize = displayNode.value <ULONG> ("VRAMSize");
5274	mHWData->mMonitorCount = displayNode.value <ULONG> ("monitorCount");
5275	mHWData->mAccelerate3DEnabled = displayNode.value <bool> ("accelerate3D");
5276	}
5277
5278	#ifdef VBOX_WITH_VRDP
5279	/* RemoteDisplay */
5280	rc = mVRDPServer->loadSettings (aNode);
5281	CheckComRCReturnRC(rc);
5282	#endif
5283
5284	/* BIOS */
5285	rc = mBIOSSettings->loadSettings (aNode);
5286	CheckComRCReturnRC(rc);
5287
5288	/* DVD drive */
5289	rc = mDVDDrive->loadSettings (aNode);
5290	CheckComRCReturnRC(rc);
5291
5292	/* Floppy drive */
5293	rc = mFloppyDrive->loadSettings (aNode);
5294	CheckComRCReturnRC(rc);
5295
5296	/* USB Controller */
5297	rc = mUSBController->loadSettings (aNode);
5298	CheckComRCReturnRC(rc);
5299
5300	/* Network node (required) */
5301	{
5302	/* we assume that all network adapters are initially disabled
5303	* and detached */
5304
5305	Key networkNode = aNode.key ("Network");
5306
5307	rc = S_OK;
5308
5309	Key::List adapters = networkNode.keys ("Adapter");
5310	for (Key::List::const_iterator it = adapters.begin();
5311	it != adapters.end(); ++ it)
5312	{
5313	/* slot number (required) */
5314	/* slot unicity is guaranteed by XML Schema */
5315	uint32_t slot = (*it).value <uint32_t> ("slot");
5316	AssertBreak (slot < RT_ELEMENTS (mNetworkAdapters));
5317
5318	rc = mNetworkAdapters [slot]->loadSettings (*it);
5319	CheckComRCReturnRC(rc);
5320	}
5321	}
5322
5323	/* Serial node (required) */
5324	{
5325	Key serialNode = aNode.key ("UART");
5326
5327	rc = S_OK;
5328
5329	Key::List ports = serialNode.keys ("Port");
5330	for (Key::List::const_iterator it = ports.begin();
5331	it != ports.end(); ++ it)
5332	{
5333	/* slot number (required) */
5334	/* slot unicity is guaranteed by XML Schema */
5335	uint32_t slot = (*it).value <uint32_t> ("slot");
5336	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5337
5338	rc = mSerialPorts [slot]->loadSettings (*it);
5339	CheckComRCReturnRC(rc);
5340	}
5341	}
5342
5343	/* Parallel node (optional) */
5344	{
5345	Key parallelNode = aNode.key ("LPT");
5346
5347	rc = S_OK;
5348
5349	Key::List ports = parallelNode.keys ("Port");
5350	for (Key::List::const_iterator it = ports.begin();
5351	it != ports.end(); ++ it)
5352	{
5353	/* slot number (required) */
5354	/* slot unicity is guaranteed by XML Schema */
5355	uint32_t slot = (*it).value <uint32_t> ("slot");
5356	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5357
5358	rc = mParallelPorts [slot]->loadSettings (*it);
5359	CheckComRCReturnRC(rc);
5360	}
5361	}
5362
5363	/* AudioAdapter */
5364	rc = mAudioAdapter->loadSettings (aNode);
5365	CheckComRCReturnRC(rc);
5366
5367	/* Shared folders (required) */
5368	{
5369	Key sharedFoldersNode = aNode.key ("SharedFolders");
5370
5371	rc = S_OK;
5372
5373	Key::List folders = sharedFoldersNode.keys ("SharedFolder");
5374	for (Key::List::const_iterator it = folders.begin();
5375	it != folders.end(); ++ it)
5376	{
5377	/* folder logical name (required) */
5378	Bstr name = (*it).stringValue ("name");
5379	/* folder host path (required) */
5380	Bstr hostPath = (*it).stringValue ("hostPath");
5381
5382	bool writable = (*it).value <bool> ("writable");
5383
5384	rc = CreateSharedFolder (name, hostPath, writable);
5385	CheckComRCReturnRC(rc);
5386	}
5387	}
5388
5389	/* Clipboard node (required) */
5390	{
5391	Key clipNode = aNode.key ("Clipboard");
5392
5393	const char *mode = clipNode.stringValue ("mode");
5394	if (strcmp (mode, "Disabled") == 0)
5395	mHWData->mClipboardMode = ClipboardMode_Disabled;
5396	else if (strcmp (mode, "HostToGuest") == 0)
5397	mHWData->mClipboardMode = ClipboardMode_HostToGuest;
5398	else if (strcmp (mode, "GuestToHost") == 0)
5399	mHWData->mClipboardMode = ClipboardMode_GuestToHost;
5400	else if (strcmp (mode, "Bidirectional") == 0)
5401	mHWData->mClipboardMode = ClipboardMode_Bidirectional;
5402	else
5403	AssertMsgFailed (("Invalid clipboard mode '%s'\n", mode));
5404	}
5405
5406	/* Guest node (required) */
5407	{
5408	Key guestNode = aNode.key ("Guest");
5409
5410	/* optional, defaults to 0 */
5411	mHWData->mMemoryBalloonSize =
5412	guestNode.value <ULONG> ("memoryBalloonSize");
5413	/* optional, defaults to 0 */
5414	mHWData->mStatisticsUpdateInterval =
5415	guestNode.value <ULONG> ("statisticsUpdateInterval");
5416	}
5417
5418	#ifdef VBOX_WITH_GUEST_PROPS
5419	/* Guest properties (optional) */
5420	try
5421	{
5422	using namespace guestProp;
5423
5424	Key guestPropertiesNode = aNode.findKey ("GuestProperties");
5425	Bstr notificationPatterns (""); /* We catch allocation failure below. */
5426	if (!guestPropertiesNode.isNull())
5427	{
5428	Key::List properties = guestPropertiesNode.keys ("GuestProperty");
5429	for (Key::List::const_iterator it = properties.begin();
5430	it != properties.end(); ++ it)
5431	{
5432	uint32_t fFlags = NILFLAG;
5433
5434	/* property name (required) */
5435	Bstr name = (*it).stringValue ("name");
5436	/* property value (required) */
5437	Bstr value = (*it).stringValue ("value");
5438	/* property timestamp (optional, defaults to 0) */
5439	ULONG64 timestamp = (*it).value<ULONG64> ("timestamp");
5440	/* property flags (optional, defaults to empty) */
5441	Bstr flags = (*it).stringValue ("flags");
5442	Utf8Str utf8Flags(flags);
5443	validateFlags (utf8Flags.raw(), &fFlags);
5444	HWData::GuestProperty property = { name, value, timestamp, fFlags };
5445	mHWData->mGuestProperties.push_back (property);
5446	/* This is just sanity, as the push_back() will probably have thrown
5447	* an exception if we are out of memory. Note that if we run out
5448	* allocating the Bstrs above, this will be caught here as well. */
5449	if ( mHWData->mGuestProperties.back().mName.isNull ()
5450	\|\| mHWData->mGuestProperties.back().mValue.isNull ()
5451	)
5452	return E_OUTOFMEMORY;
5453	}
5454	notificationPatterns = guestPropertiesNode.stringValue ("notificationPatterns");
5455	}
5456	mHWData->mPropertyServiceActive = false;
5457	mHWData->mGuestPropertyNotificationPatterns = notificationPatterns;
5458	if (mHWData->mGuestPropertyNotificationPatterns.isNull ())
5459	return E_OUTOFMEMORY;
5460	}
5461	catch(std::bad_alloc &e)
5462	{
5463	return E_OUTOFMEMORY;
5464	}
5465	#endif /* VBOX_WITH_GUEST_PROPS defined */
5466
5467	AssertComRC (rc);
5468	return rc;
5469	}
5470
5471	/**
5472	* @param aNode <StorageControllers> node.
5473	*/
5474	HRESULT Machine::loadStorageControllers (const settings::Key &aNode, bool aRegistered,
5475	const Guid aSnapshotId / = NULL */)
5476	{
5477	using namespace settings;
5478
5479	AssertReturn(!aNode.isNull(), E_INVALIDARG);
5480	AssertReturn(mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5481
5482	HRESULT rc = S_OK;
5483
5484	Key::List children = aNode.keys ("StorageController");
5485
5486	/* Make sure the attached hard disks don't get unregistered until we
5487	* associate them with tis machine (important for VMs loaded (opened) after
5488	* VirtualBox startup) */
5489	AutoReadLock vboxLock (mParent);
5490
5491	for (Key::List::const_iterator it = children.begin();
5492	it != children.end(); ++ it)
5493	{
5494	Bstr controllerName = (*it).stringValue ("name");
5495	const char controllerType = (it).stringValue ("type");
5496	ULONG portCount = (*it).value <ULONG> ("PortCount");
5497	StorageControllerType_T controller;
5498	StorageBus_T connection;
5499
5500	if (strcmp (controllerType, "AHCI") == 0)
5501	{
5502	connection = StorageBus_SATA;
5503	controller = StorageControllerType_IntelAhci;
5504	}
5505	else if (strcmp (controllerType, "LsiLogic") == 0)
5506	{
5507	connection = StorageBus_SCSI;
5508	controller = StorageControllerType_LsiLogic;
5509	}
5510	else if (strcmp (controllerType, "BusLogic") == 0)
5511	{
5512	connection = StorageBus_SCSI;
5513	controller = StorageControllerType_BusLogic;
5514	}
5515	else if (strcmp (controllerType, "PIIX3") == 0)
5516	{
5517	connection = StorageBus_IDE;
5518	controller = StorageControllerType_PIIX3;
5519	}
5520	else if (strcmp (controllerType, "PIIX4") == 0)
5521	{
5522	connection = StorageBus_IDE;
5523	controller = StorageControllerType_PIIX4;
5524	}
5525	else if (strcmp (controllerType, "ICH6") == 0)
5526	{
5527	connection = StorageBus_IDE;
5528	controller = StorageControllerType_ICH6;
5529	}
5530	else
5531	AssertFailedReturn (E_FAIL);
5532
5533	ComObjPtr<StorageController> ctl;
5534	/* Try to find one with the name first. */
5535	rc = getStorageControllerByName (controllerName, ctl, false /* aSetError */);
5536	if (SUCCEEDED(rc))
5537	return setError (VBOX_E_OBJECT_IN_USE,
5538	tr ("Storage controller named '%ls' already exists"), controllerName.raw());
5539
5540	ctl.createObject();
5541	rc = ctl->init (this, controllerName, connection);
5542	CheckComRCReturnRC(rc);
5543
5544	mStorageControllers->push_back (ctl);
5545
5546	rc = ctl->COMSETTER(ControllerType)(controller);
5547	CheckComRCReturnRC(rc);
5548
5549	rc = ctl->COMSETTER(PortCount)(portCount);
5550	CheckComRCReturnRC(rc);
5551
5552	/* Set IDE emulation settings (only for AHCI controller). */
5553	if (controller == StorageControllerType_IntelAhci)
5554	{
5555	ULONG val;
5556
5557	/* ide emulation settings (optional, default to 0,1,2,3 respectively) */
5558	val = (*it).valueOr <ULONG> ("IDE0MasterEmulationPort", 0);
5559	rc = ctl->SetIDEEmulationPort(0, val);
5560	CheckComRCReturnRC(rc);
5561	val = (*it).valueOr <ULONG> ("IDE0SlaveEmulationPort", 1);
5562	rc = ctl->SetIDEEmulationPort(1, val);
5563	CheckComRCReturnRC(rc);
5564	val = (*it).valueOr <ULONG> ("IDE1MasterEmulationPort", 2);
5565	rc = ctl->SetIDEEmulationPort(2, val);
5566	CheckComRCReturnRC(rc);
5567	val = (*it).valueOr <ULONG> ("IDE1SlaveEmulationPort", 3);
5568	rc = ctl->SetIDEEmulationPort(3, val);
5569	CheckComRCReturnRC(rc);
5570	}
5571
5572	/* Load the attached devices now. */
5573	rc = loadStorageDevices(ctl, (*it),
5574	aRegistered, aSnapshotId);
5575	CheckComRCReturnRC(rc);
5576	}
5577
5578	return S_OK;
5579	}
5580
5581	/**
5582	* @param aNode <HardDiskAttachments> node.
5583	* @param aRegistered true when the machine is being loaded on VirtualBox
5584	* startup, or when a snapshot is being loaded (wchich
5585	* currently can happen on startup only)
5586	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
5587	*
5588	* @note Lock mParent for reading and hard disks for writing before calling.
5589	*/
5590	HRESULT Machine::loadStorageDevices (ComObjPtr<StorageController> aStorageController,
5591	const settings::Key &aNode, bool aRegistered,
5592	const Guid aSnapshotId / = NULL */)
5593	{
5594	using namespace settings;
5595
5596	AssertReturn(!aNode.isNull(), E_INVALIDARG);
5597	AssertReturn((mType == IsMachine && aSnapshotId == NULL) \|\|
5598	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
5599
5600	HRESULT rc = S_OK;
5601
5602	Key::List children = aNode.keys ("AttachedDevice");
5603
5604	if (!aRegistered && children.size() > 0)
5605	{
5606	/* when the machine is being loaded (opened) from a file, it cannot
5607	* have hard disks attached (this should not happen normally,
5608	* because we don't allow to attach hard disks to an unregistered
5609	* VM at all */
5610	return setError (E_FAIL,
5611	tr ("Unregistered machine '%ls' cannot have hard disks attached "
5612	"(found %d hard disk attachments)"),
5613	mUserData->mName.raw(), children.size());
5614	}
5615
5616	for (Key::List::const_iterator it = children.begin();
5617	it != children.end(); ++ it)
5618	{
5619	Key idKey = (*it).key ("Image");
5620	/* hard disk uuid (required) */
5621	Guid uuid = idKey.value <Guid> ("uuid");
5622	/* device type (required) */
5623	const char deviceType = (it).stringValue ("type");
5624	/* channel (required) */
5625	LONG port = (*it).value <LONG> ("port");
5626	/* device (required) */
5627	LONG device = (*it).value <LONG> ("device");
5628
5629	/* We support only hard disk types at the moment.
5630	* @todo: Implement support for CD/DVD drives.
5631	*/
5632	if (strcmp(deviceType, "HardDisk") != 0)
5633	return setError (E_FAIL,
5634	tr ("Device at position %lu:%lu is not a hard disk: %s"),
5635	port, device, deviceType);
5636
5637	/* find a hard disk by UUID */
5638	ComObjPtr<HardDisk> hd;
5639	rc = mParent->findHardDisk(&uuid, NULL, true /* aDoSetError */, &hd);
5640	CheckComRCReturnRC(rc);
5641
5642	AutoWriteLock hdLock (hd);
5643
5644	if (hd->type() == HardDiskType_Immutable)
5645	{
5646	if (mType == IsSnapshotMachine)
5647	return setError (E_FAIL,
5648	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5649	"directly attached to snapshot with UUID {%RTuuid} "
5650	"of the virtual machine '%ls' ('%ls')"),
5651	hd->locationFull().raw(), uuid.raw(),
5652	aSnapshotId->raw(),
5653	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5654
5655	return setError (E_FAIL,
5656	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5657	"directly attached to the virtual machine '%ls' ('%ls')"),
5658	hd->locationFull().raw(), uuid.raw(),
5659	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5660	}
5661
5662	if (mType != IsSnapshotMachine && hd->children().size() != 0)
5663	return setError (E_FAIL,
5664	tr ("Hard disk '%ls' with UUID {%RTuuid} cannot be directly "
5665	"attached to the virtual machine '%ls' ('%ls') "
5666	"because it has %d differencing child hard disks"),
5667	hd->locationFull().raw(), uuid.raw(),
5668	mUserData->mName.raw(), mData->mConfigFileFull.raw(),
5669	hd->children().size());
5670
5671	if (std::find_if (mHDData->mAttachments.begin(),
5672	mHDData->mAttachments.end(),
5673	HardDiskAttachment::RefersTo (hd)) !=
5674	mHDData->mAttachments.end())
5675	{
5676	return setError (E_FAIL,
5677	tr ("Hard disk '%ls' with UUID {%RTuuid} is already attached "
5678	"to the virtual machine '%ls' ('%ls')"),
5679	hd->locationFull().raw(), uuid.raw(),
5680	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5681	}
5682
5683	const Bstr controllerName = aStorageController->name();
5684	ComObjPtr<HardDiskAttachment> attachment;
5685	attachment.createObject();
5686	rc = attachment->init (hd, controllerName, port, device);
5687	CheckComRCBreakRC (rc);
5688
5689	/* associate the hard disk with this machine and snapshot */
5690	if (mType == IsSnapshotMachine)
5691	rc = hd->attachTo (mData->mUuid, *aSnapshotId);
5692	else
5693	rc = hd->attachTo (mData->mUuid);
5694
5695	AssertComRCBreakRC (rc);
5696
5697	/* backup mHDData to let registeredInit() properly rollback on failure
5698	* (= limited accessibility) */
5699
5700	mHDData.backup();
5701	mHDData->mAttachments.push_back (attachment);
5702	}
5703
5704	return rc;
5705	}
5706
5707	/**
5708	* Searches for a <Snapshot> node for the given snapshot.
5709	* If the search is successful, \a aSnapshotNode will contain the found node.
5710	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
5711	* direct child of \a aMachineNode.
5712	*
5713	* If the search fails, a failure is returned and both \a aSnapshotsNode and
5714	* \a aSnapshotNode are set to 0.
5715	*
5716	* @param aSnapshot Snapshot to search for.
5717	* @param aMachineNode <Machine> node to start from.
5718	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
5719	* (may be NULL if the caller is not interested).
5720	* @param aSnapshotNode Found <Snapshot> node.
5721	*/
5722	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, settings::Key &aMachineNode,
5723	settings::Key *aSnapshotsNode,
5724	settings::Key *aSnapshotNode)
5725	{
5726	using namespace settings;
5727
5728	AssertReturn(aSnapshot && !aMachineNode.isNull()
5729	&& aSnapshotNode != NULL, E_FAIL);
5730
5731	if (aSnapshotsNode)
5732	aSnapshotsNode->setNull();
5733	aSnapshotNode->setNull();
5734
5735	// build the full uuid path (from the top parent to the given snapshot)
5736	std::list<Guid> path;
5737	{
5738	ComObjPtr<Snapshot> parent = aSnapshot;
5739	while (parent)
5740	{
5741	path.push_front(parent->getId());
5742	parent = parent->parent();
5743	}
5744	}
5745
5746	Key snapshotsNode = aMachineNode;
5747	Key snapshotNode;
5748
5749	for (std::list <Guid>::const_iterator it = path.begin();
5750	it != path.end();
5751	++ it)
5752	{
5753	if (!snapshotNode.isNull())
5754	{
5755	/* proceed to the nested <Snapshots> node */
5756	snapshotsNode = snapshotNode.key ("Snapshots");
5757	snapshotNode.setNull();
5758	}
5759
5760	AssertReturn(!snapshotsNode.isNull(), E_FAIL);
5761
5762	Key::List children = snapshotsNode.keys ("Snapshot");
5763	for (Key::List::const_iterator ch = children.begin();
5764	ch != children.end();
5765	++ ch)
5766	{
5767	Guid id = (*ch).value <Guid> ("uuid");
5768	if (id == (*it))
5769	{
5770	/* pass over to the outer loop */
5771	snapshotNode = *ch;
5772	break;
5773	}
5774	}
5775
5776	if (!snapshotNode.isNull())
5777	continue;
5778
5779	/* the next uuid is not found, no need to continue... */
5780	AssertFailedBreak();
5781	}
5782
5783	// we must always succesfully find the node
5784	AssertReturn(!snapshotNode.isNull(), E_FAIL);
5785	AssertReturn(!snapshotsNode.isNull(), E_FAIL);
5786
5787	if (aSnapshotsNode && (snapshotsNode != aMachineNode))
5788	*aSnapshotsNode = snapshotsNode;
5789	*aSnapshotNode = snapshotNode;
5790
5791	return S_OK;
5792	}
5793
5794	/**
5795	* Returns the snapshot with the given UUID or fails of no such snapshot.
5796	*
5797	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5798	* @param aSnapshot where to return the found snapshot
5799	* @param aSetError true to set extended error info on failure
5800	*/
5801	HRESULT Machine::findSnapshot(const Guid &aId,
5802	ComObjPtr<Snapshot> &aSnapshot,
5803	bool aSetError /* = false */)
5804	{
5805	AutoReadLock chlock(snapshotsTreeLockHandle());
5806
5807	if (!mData->mFirstSnapshot)
5808	{
5809	if (aSetError)
5810	return setError (E_FAIL,
5811	tr ("This machine does not have any snapshots"));
5812	return E_FAIL;
5813	}
5814
5815	if (aId.isEmpty())
5816	aSnapshot = mData->mFirstSnapshot;
5817	else
5818	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
5819
5820	if (!aSnapshot)
5821	{
5822	if (aSetError)
5823	return setError (E_FAIL,
5824	tr ("Could not find a snapshot with UUID {%s}"),
5825	aId.toString().raw());
5826	return E_FAIL;
5827	}
5828
5829	return S_OK;
5830	}
5831
5832	/**
5833	* Returns the snapshot with the given name or fails of no such snapshot.
5834	*
5835	* @param aName snapshot name to find
5836	* @param aSnapshot where to return the found snapshot
5837	* @param aSetError true to set extended error info on failure
5838	*/
5839	HRESULT Machine::findSnapshot(IN_BSTR aName,
5840	ComObjPtr<Snapshot> &aSnapshot,
5841	bool aSetError /* = false */)
5842	{
5843	AssertReturn(aName, E_INVALIDARG);
5844
5845	AutoReadLock chlock(snapshotsTreeLockHandle());
5846
5847	if (!mData->mFirstSnapshot)
5848	{
5849	if (aSetError)
5850	return setError (VBOX_E_OBJECT_NOT_FOUND,
5851	tr ("This machine does not have any snapshots"));
5852	return VBOX_E_OBJECT_NOT_FOUND;
5853	}
5854
5855	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5856
5857	if (!aSnapshot)
5858	{
5859	if (aSetError)
5860	return setError (VBOX_E_OBJECT_NOT_FOUND,
5861	tr ("Could not find a snapshot named '%ls'"), aName);
5862	return VBOX_E_OBJECT_NOT_FOUND;
5863	}
5864
5865	return S_OK;
5866	}
5867
5868	/**
5869	* Returns a storage controller object with the given name.
5870	*
5871	* @param aName storage controller name to find
5872	* @param aStorageController where to return the found storage controller
5873	* @param aSetError true to set extended error info on failure
5874	*/
5875	HRESULT Machine::getStorageControllerByName(CBSTR aName,
5876	ComObjPtr<StorageController> &aStorageController,
5877	bool aSetError /* = false */)
5878	{
5879	AssertReturn(aName, E_INVALIDARG);
5880
5881	for (StorageControllerList::const_iterator it =
5882	mStorageControllers->begin();
5883	it != mStorageControllers->end();
5884	++ it)
5885	{
5886	if ((*it)->name() == aName)
5887	{
5888	aStorageController = (*it);
5889	return S_OK;
5890	}
5891	}
5892
5893	if (aSetError)
5894	return setError (VBOX_E_OBJECT_NOT_FOUND,
5895	tr ("Could not find a storage controller named '%ls'"), aName);
5896	return VBOX_E_OBJECT_NOT_FOUND;
5897	}
5898
5899	HRESULT Machine::getHardDiskAttachmentsOfController(CBSTR aName,
5900	HDData::AttachmentList &atts)
5901	{
5902	AutoCaller autoCaller(this);
5903	CheckComRCReturnRC(autoCaller.rc());
5904
5905	AutoReadLock alock(this);
5906
5907	for (HDData::AttachmentList::iterator it = mHDData->mAttachments.begin();
5908	it != mHDData->mAttachments.end(); ++it)
5909	{
5910	if ((*it)->controller() == aName)
5911	atts.push_back(*it);
5912	}
5913
5914	return S_OK;
5915	}
5916
5917	/**
5918	* Helper for #saveSettings. Cares about renaming the settings directory and
5919	* file if the machine name was changed and about creating a new settings file
5920	* if this is a new machine.
5921	*
5922	* @note Must be never called directly but only from #saveSettings().
5923	*
5924	* @param aRenamed receives \|true\| if the name was changed and the settings
5925	* file was renamed as a result, or \|false\| otherwise. The
5926	* value makes sense only on success.
5927	* @param aNew receives \|true\| if a virgin settings file was created.
5928	*/
5929	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
5930	{
5931	/* Note: tecnhically, mParent needs to be locked only when the machine is
5932	* registered (see prepareSaveSettings() for details) but we don't
5933	* currently differentiate it in callers of saveSettings() so we don't
5934	* make difference here too. */
5935	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
5936	AssertReturn(isWriteLockOnCurrentThread(), E_FAIL);
5937
5938	HRESULT rc = S_OK;
5939
5940	aRenamed = false;
5941
5942	/* if we're ready and isConfigLocked() is FALSE then it means
5943	* that no config file exists yet (we will create a virgin one) */
5944	aNew = !isConfigLocked();
5945
5946	/* attempt to rename the settings file if machine name is changed */
5947	if (mUserData->mNameSync &&
5948	mUserData.isBackedUp() &&
5949	mUserData.backedUpData()->mName != mUserData->mName)
5950	{
5951	aRenamed = true;
5952
5953	if (!aNew)
5954	{
5955	/* unlock the old config file */
5956	rc = unlockConfig();
5957	CheckComRCReturnRC(rc);
5958	}
5959
5960	bool dirRenamed = false;
5961	bool fileRenamed = false;
5962
5963	Utf8Str configFile, newConfigFile;
5964	Utf8Str configDir, newConfigDir;
5965
5966	do
5967	{
5968	int vrc = VINF_SUCCESS;
5969
5970	Utf8Str name = mUserData.backedUpData()->mName;
5971	Utf8Str newName = mUserData->mName;
5972
5973	configFile = mData->mConfigFileFull;
5974
5975	/* first, rename the directory if it matches the machine name */
5976	configDir = configFile;
5977	configDir.stripFilename();
5978	newConfigDir = configDir;
5979	if (RTPathFilename(configDir) == name)
5980	{
5981	newConfigDir.stripFilename();
5982	newConfigDir = Utf8StrFmt ("%s%c%s",
5983	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5984	/* new dir and old dir cannot be equal here because of 'if'
5985	* above and because name != newName */
5986	Assert (configDir != newConfigDir);
5987	if (!aNew)
5988	{
5989	/* perform real rename only if the machine is not new */
5990	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5991	if (RT_FAILURE(vrc))
5992	{
5993	rc = setError (E_FAIL,
5994	tr ("Could not rename the directory '%s' to '%s' "
5995	"to save the settings file (%Rrc)"),
5996	configDir.raw(), newConfigDir.raw(), vrc);
5997	break;
5998	}
5999	dirRenamed = true;
6000	}
6001	}
6002
6003	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
6004	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
6005
6006	/* then try to rename the settings file itself */
6007	if (newConfigFile != configFile)
6008	{
6009	/* get the path to old settings file in renamed directory */
6010	configFile = Utf8StrFmt ("%s%c%s",
6011	newConfigDir.raw(), RTPATH_DELIMITER,
6012	RTPathFilename (configFile));
6013	if (!aNew)
6014	{
6015	/* perform real rename only if the machine is not new */
6016	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
6017	if (RT_FAILURE(vrc))
6018	{
6019	rc = setError (E_FAIL,
6020	tr ("Could not rename the settings file '%s' to '%s' "
6021	"(%Rrc)"),
6022	configFile.raw(), newConfigFile.raw(), vrc);
6023	break;
6024	}
6025	fileRenamed = true;
6026	}
6027	}
6028
6029	/* update mConfigFileFull amd mConfigFile */
6030	Bstr oldConfigFileFull = mData->mConfigFileFull;
6031	Bstr oldConfigFile = mData->mConfigFile;
6032	mData->mConfigFileFull = newConfigFile;
6033	/* try to get the relative path for mConfigFile */
6034	Utf8Str path = newConfigFile;
6035	mParent->calculateRelativePath (path, path);
6036	mData->mConfigFile = path;
6037
6038	/* last, try to update the global settings with the new path */
6039	if (mData->mRegistered)
6040	{
6041	rc = mParent->updateSettings (configDir, newConfigDir);
6042	if (FAILED (rc))
6043	{
6044	/* revert to old values */
6045	mData->mConfigFileFull = oldConfigFileFull;
6046	mData->mConfigFile = oldConfigFile;
6047	break;
6048	}
6049	}
6050
6051	/* update the snapshot folder */
6052	path = mUserData->mSnapshotFolderFull;
6053	if (RTPathStartsWith (path, configDir))
6054	{
6055	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
6056	path.raw() + configDir.length());
6057	mUserData->mSnapshotFolderFull = path;
6058	calculateRelativePath (path, path);
6059	mUserData->mSnapshotFolder = path;
6060	}
6061
6062	/* update the saved state file path */
6063	path = mSSData->mStateFilePath;
6064	if (RTPathStartsWith (path, configDir))
6065	{
6066	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
6067	path.raw() + configDir.length());
6068	mSSData->mStateFilePath = path;
6069	}
6070
6071	/* Update saved state file paths of all online snapshots.
6072	* Note that saveSettings() will recognize name change
6073	* and will save all snapshots in this case. */
6074	if (mData->mFirstSnapshot)
6075	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
6076	newConfigDir);
6077	}
6078	while (0);
6079
6080	if (FAILED (rc))
6081	{
6082	/* silently try to rename everything back */
6083	if (fileRenamed)
6084	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
6085	if (dirRenamed)
6086	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
6087	}
6088
6089	if (!aNew)
6090	{
6091	/* lock the config again */
6092	HRESULT rc2 = lockConfig();
6093	if (SUCCEEDED(rc))
6094	rc = rc2;
6095	}
6096
6097	CheckComRCReturnRC(rc);
6098	}
6099
6100	if (aNew)
6101	{
6102	/* create a virgin config file */
6103	int vrc = VINF_SUCCESS;
6104
6105	/* ensure the settings directory exists */
6106	Utf8Str path(mData->mConfigFileFull);
6107	path.stripFilename();
6108	if (!RTDirExists(path))
6109	{
6110	vrc = RTDirCreateFullPath(path, 0777);
6111	if (RT_FAILURE(vrc))
6112	{
6113	return setError (E_FAIL,
6114	tr ("Could not create a directory '%s' "
6115	"to save the settings file (%Rrc)"),
6116	path.raw(), vrc);
6117	}
6118	}
6119
6120	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
6121	path = Utf8Str (mData->mConfigFileFull);
6122	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
6123	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
6124	RTFILE_O_DENY_WRITE);
6125	if (RT_SUCCESS(vrc))
6126	{
6127	vrc = RTFileWrite (mData->mHandleCfgFile,
6128	(void *) gDefaultMachineConfig,
6129	strlen (gDefaultMachineConfig), NULL);
6130	}
6131	if (RT_FAILURE(vrc))
6132	{
6133	mData->mHandleCfgFile = NIL_RTFILE;
6134	return setError (E_FAIL,
6135	tr ("Could not create the settings file '%s' (%Rrc)"),
6136	path.raw(), vrc);
6137	}
6138	/* we do not close the file to simulate lockConfig() */
6139	}
6140
6141	return rc;
6142	}
6143
6144	/**
6145	* Saves and commits machine data, user data and hardware data.
6146	*
6147	* Note that on failure, the data remains uncommitted.
6148	*
6149	* @a aFlags may combine the following flags:
6150	*
6151	* - SaveS_ResetCurStateModified: Resets mData->mCurrentStateModified to FALSE.
6152	* Used when saving settings after an operation that makes them 100%
6153	* correspond to the settings from the current snapshot.
6154	* - SaveS_InformCallbacksAnyway: Callbacks will be informed even if
6155	* #isReallyModified() returns false. This is necessary for cases when we
6156	* change machine data diectly, not through the backup()/commit() mechanism.
6157	*
6158	* @note Must be called from under mParent write lock (sometimes needed by
6159	* #prepareSaveSettings()) and this object's write lock. Locks children for
6160	* writing. There is one exception when mParent is unused and therefore may be
6161	* left unlocked: if this machine is an unregistered one.
6162	*/
6163	HRESULT Machine::saveSettings (int aFlags /= 0/)
6164	{
6165	LogFlowThisFuncEnter();
6166
6167	/* Note: tecnhically, mParent needs to be locked only when the machine is
6168	* registered (see prepareSaveSettings() for details) but we don't
6169	* currently differentiate it in callers of saveSettings() so we don't
6170	* make difference here too. */
6171	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
6172	AssertReturn(isWriteLockOnCurrentThread(), E_FAIL);
6173
6174	/* make sure child objects are unable to modify the settings while we are
6175	* saving them */
6176	ensureNoStateDependencies();
6177
6178	AssertReturn(mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6179
6180	BOOL currentStateModified = mData->mCurrentStateModified;
6181	bool settingsModified;
6182
6183	if (!(aFlags & SaveS_ResetCurStateModified) && !currentStateModified)
6184	{
6185	/* We ignore changes to user data when setting mCurrentStateModified
6186	* because the current state will not differ from the current snapshot
6187	* if only user data has been changed (user data is shared by all
6188	* snapshots). */
6189	currentStateModified = isReallyModified (true /* aIgnoreUserData */);
6190	settingsModified = mUserData.hasActualChanges() \|\| currentStateModified;
6191	}
6192	else
6193	{
6194	if (aFlags & SaveS_ResetCurStateModified)
6195	currentStateModified = FALSE;
6196	settingsModified = isReallyModified();
6197	}
6198
6199	HRESULT rc = S_OK;
6200
6201	/* First, prepare to save settings. It will care about renaming the
6202	* settings directory and file if the machine name was changed and about
6203	* creating a new settings file if this is a new machine. */
6204	bool isRenamed = false;
6205	bool isNew = false;
6206	rc = prepareSaveSettings (isRenamed, isNew);
6207	CheckComRCReturnRC(rc);
6208
6209	try
6210	{
6211	using namespace settings;
6212	using namespace xml;
6213
6214	/* this object is locked for writing to prevent concurrent reads and writes */
6215	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6216	XmlTreeBackend tree;
6217
6218	/* The newly created settings file is incomplete therefore we turn off
6219	* validation. The rest is like in loadSettingsTree_ForUpdate().*/
6220	rc = VirtualBox::loadSettingsTree (tree, file,
6221	!isNew /* aValidate */,
6222	false /* aCatchLoadErrors */,
6223	false /* aAddDefaults */);
6224	CheckComRCThrowRC (rc);
6225
6226	Key machineNode = tree.rootKey().createKey ("Machine");
6227
6228	/* uuid (required) */
6229	Assert (!mData->mUuid.isEmpty());
6230	machineNode.setValue <Guid> ("uuid", mData->mUuid);
6231
6232	/* name (required) */
6233	Assert (!mUserData->mName.isEmpty());
6234	machineNode.setValue <Bstr> ("name", mUserData->mName);
6235
6236	/* nameSync (optional, default is true) */
6237	machineNode.setValueOr <bool> ("nameSync", !!mUserData->mNameSync, true);
6238
6239	/* Description node (optional) */
6240	if (!mUserData->mDescription.isNull())
6241	{
6242	Key descNode = machineNode.createKey ("Description");
6243	descNode.setKeyValue <Bstr> (mUserData->mDescription);
6244	}
6245	else
6246	{
6247	Key descNode = machineNode.findKey ("Description");
6248	if (!descNode.isNull())
6249	descNode.zap();
6250	}
6251
6252	/* OSType (required) */
6253	machineNode.setValue <Bstr> ("OSType", mUserData->mOSTypeId);
6254
6255	/* stateFile (optional) */
6256	/// @todo The reason for MachineState_Restoring below:
6257	/// PushGuestProperties() is always called from Console::powerDown()
6258	/// (including the case when restoring from the saved state fails) and
6259	/// calls SaveSettings() to save guest properties. Since the saved state
6260	/// file is still present there (and should be kept), we must save it
6261	/// while in Restoring state too. However, calling SaveSettings() from
6262	/// PushGuestProperties() is wrong in the first place. A proper way is
6263	/// to only save guest properties node and not involve the whole save
6264	/// process.
6265	if (mData->mMachineState == MachineState_Saved \|\|
6266	mData->mMachineState == MachineState_Restoring)
6267	{
6268	Assert (!mSSData->mStateFilePath.isEmpty());
6269	/* try to make the file name relative to the settings file dir */
6270	Utf8Str stateFilePath = mSSData->mStateFilePath;
6271	calculateRelativePath (stateFilePath, stateFilePath);
6272	machineNode.setStringValue ("stateFile", stateFilePath);
6273	}
6274	else
6275	{
6276	Assert (mSSData->mStateFilePath.isNull());
6277	machineNode.zapValue ("stateFile");
6278	}
6279
6280	/* currentSnapshot ID (optional) */
6281	if (!mData->mCurrentSnapshot.isNull())
6282	{
6283	Assert (!mData->mFirstSnapshot.isNull());
6284	machineNode.setValue<Guid>("currentSnapshot",
6285	mData->mCurrentSnapshot->getId());
6286	}
6287	else
6288	{
6289	Assert (mData->mFirstSnapshot.isNull());
6290	machineNode.zapValue ("currentSnapshot");
6291	}
6292
6293	/* snapshotFolder (optional) */
6294	/// @todo use the Bstr::NullOrEmpty constant and setValueOr
6295	if (!mUserData->mSnapshotFolder.isEmpty())
6296	machineNode.setValue <Bstr> ("snapshotFolder", mUserData->mSnapshotFolder);
6297	else
6298	machineNode.zapValue ("snapshotFolder");
6299
6300	/* currentStateModified (optional, default is true) */
6301	machineNode.setValueOr <bool> ("currentStateModified",
6302	!!currentStateModified, true);
6303
6304	/* lastStateChange */
6305	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
6306	mData->mLastStateChange);
6307
6308	/* set the aborted attribute when appropriate, defaults to false */
6309	machineNode.setValueOr <bool> ("aborted",
6310	mData->mMachineState == MachineState_Aborted,
6311	false);
6312
6313	/* Hardware node (required) */
6314	{
6315	/* first, delete the entire node if exists */
6316	Key hwNode = machineNode.findKey ("Hardware");
6317	if (!hwNode.isNull())
6318	hwNode.zap();
6319	/* then recreate it */
6320	hwNode = machineNode.createKey ("Hardware");
6321
6322	rc = saveHardware (hwNode);
6323	CheckComRCThrowRC (rc);
6324	}
6325
6326	/* StorageControllers node (required) */
6327	{
6328	/* first, delete the entire node if exists */
6329	Key storageNode = machineNode.findKey ("StorageControllers");
6330	if (!storageNode.isNull())
6331	storageNode.zap();
6332	/* then recreate it */
6333	storageNode = machineNode.createKey ("StorageControllers");
6334
6335	rc = saveStorageControllers (storageNode);
6336	CheckComRCThrowRC (rc);
6337	}
6338
6339	/* ask to save all snapshots when the machine name was changed since
6340	* it may affect saved state file paths for online snapshots (see
6341	* #openConfigLoader() for details) */
6342	if (isRenamed)
6343	{
6344	rc = saveSnapshotSettingsWorker (machineNode, NULL,
6345	SaveSS_UpdateAllOp);
6346	CheckComRCThrowRC (rc);
6347	}
6348
6349	/* save the settings on success */
6350	rc = VirtualBox::saveSettingsTree (tree, file,
6351	mData->mSettingsFileVersion);
6352	CheckComRCThrowRC (rc);
6353	}
6354	catch (HRESULT err)
6355	{
6356	/* we assume that error info is set by the thrower */
6357	rc = err;
6358	}
6359	catch (...)
6360	{
6361	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6362	}
6363
6364	if (SUCCEEDED(rc))
6365	{
6366	commit();
6367
6368	/* memorize the new modified state */
6369	mData->mCurrentStateModified = currentStateModified;
6370	}
6371
6372	if (settingsModified \|\| (aFlags & SaveS_InformCallbacksAnyway))
6373	{
6374	/* Fire the data change event, even on failure (since we've already
6375	* committed all data). This is done only for SessionMachines because
6376	* mutable Machine instances are always not registered (i.e. private
6377	* to the client process that creates them) and thus don't need to
6378	* inform callbacks. */
6379	if (mType == IsSessionMachine)
6380	mParent->onMachineDataChange(mData->mUuid);
6381	}
6382
6383	LogFlowThisFunc(("rc=%08X\n", rc));
6384	LogFlowThisFuncLeave();
6385	return rc;
6386	}
6387
6388	/**
6389	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
6390	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
6391	* for more details.
6392	*
6393	* @param aSnapshot Snapshot to operate on
6394	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6395	* or SaveSS_UpdateAttrsOp possibly combined with
6396	* SaveSS_UpdateCurrentId.
6397	*
6398	* @note Locks this object for writing + other child objects.
6399	*/
6400	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
6401	{
6402	AutoCaller autoCaller(this);
6403	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6404
6405	AssertReturn(mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6406
6407	/* This object's write lock is also necessary to serialize file access
6408	* (prevent concurrent reads and writes) */
6409	AutoWriteLock alock(this);
6410
6411	AssertReturn(isConfigLocked(), E_FAIL);
6412
6413	HRESULT rc = S_OK;
6414
6415	try
6416	{
6417	using namespace settings;
6418	using namespace xml;
6419
6420	/* load the settings file */
6421	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6422	XmlTreeBackend tree;
6423
6424	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
6425	CheckComRCReturnRC(rc);
6426
6427	Key machineNode = tree.rootKey().key ("Machine");
6428
6429	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
6430	CheckComRCReturnRC(rc);
6431
6432	/* save settings on success */
6433	rc = VirtualBox::saveSettingsTree (tree, file,
6434	mData->mSettingsFileVersion);
6435	CheckComRCReturnRC(rc);
6436	}
6437	catch (...)
6438	{
6439	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6440	}
6441
6442	return rc;
6443	}
6444
6445	/**
6446	* Performs the specified operation on the given snapshot
6447	* in the settings file represented by \a aMachineNode.
6448	*
6449	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
6450	* that the whole tree of the snapshots should be updated in <Machine>.
6451	* One particular case is when the last (and the only) snapshot should be
6452	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
6453	*
6454	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
6455	* attribute of <Machine> needs to be updated.
6456	*
6457	* @param aMachineNode <Machine> node in the opened settings file.
6458	* @param aSnapshot Snapshot to operate on.
6459	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6460	* or SaveSS_UpdateAttrsOp possibly combined with
6461	* SaveSS_UpdateCurrentId.
6462	*
6463	* @note Must be called with this object locked for writing.
6464	* Locks child objects.
6465	*/
6466	HRESULT Machine::saveSnapshotSettingsWorker (settings::Key &aMachineNode,
6467	Snapshot *aSnapshot, int aOpFlags)
6468	{
6469	using namespace settings;
6470
6471	AssertReturn(!aMachineNode.isNull(), E_FAIL);
6472
6473	AssertReturn(isWriteLockOnCurrentThread(), E_FAIL);
6474
6475	int op = aOpFlags & SaveSS_OpMask;
6476	AssertReturn(
6477	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
6478	op == SaveSS_UpdateAllOp)) \|\|
6479	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_CurrentId)) \|\|
6480	op == SaveSS_UpdateAllOp)),
6481	E_FAIL);
6482
6483	HRESULT rc = S_OK;
6484
6485	bool recreateWholeTree = false;
6486
6487	do
6488	{
6489	if (op == SaveSS_NoOp)
6490	break;
6491
6492	/* quick path: recreate the whole tree of the snapshots */
6493	if (op == SaveSS_UpdateAllOp && aSnapshot == NULL)
6494	{
6495	/* first, delete the entire root snapshot node if it exists */
6496	Key snapshotNode = aMachineNode.findKey ("Snapshot");
6497	if (!snapshotNode.isNull())
6498	snapshotNode.zap();
6499
6500	/* second, if we have any snapshots left, substitute aSnapshot
6501	* with the first snapshot to recreate the whole tree, otherwise
6502	* break */
6503	if (mData->mFirstSnapshot)
6504	{
6505	aSnapshot = mData->mFirstSnapshot;
6506	recreateWholeTree = true;
6507	}
6508	else
6509	break;
6510	}
6511
6512	Assert (!!aSnapshot);
6513	ComObjPtr<Snapshot> parent = aSnapshot->parent();
6514
6515	if (op == SaveSS_AddOp)
6516	{
6517	Key parentNode;
6518
6519	if (parent)
6520	{
6521	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
6522	CheckComRCBreakRC (rc);
6523
6524	ComAssertBreak (!parentNode.isNull(), rc = E_FAIL);
6525	}
6526
6527	do
6528	{
6529	Key snapshotsNode;
6530
6531	if (!parentNode.isNull())
6532	snapshotsNode = parentNode.createKey ("Snapshots");
6533	else
6534	snapshotsNode = aMachineNode;
6535	do
6536	{
6537	Key snapshotNode = snapshotsNode.appendKey ("Snapshot");
6538	rc = aSnapshot->saveSnapshot(snapshotNode, false /* aAttrsOnly */);
6539	CheckComRCBreakRC (rc);
6540
6541	/* when a new snapshot is added, this means diffs were created
6542	* for every normal/immutable hard disk of the VM, so we need to
6543	* save the current hard disk attachments */
6544
6545	Key storageNode = aMachineNode.findKey ("StorageControllers");
6546	if (!storageNode.isNull())
6547	storageNode.zap();
6548	storageNode = aMachineNode.createKey ("StorageControllers");
6549
6550	rc = saveStorageControllers (storageNode);
6551	CheckComRCBreakRC (rc);
6552
6553	if (mHDData->mAttachments.size() != 0)
6554	{
6555	/* If we have one or more attachments then we definitely
6556	* created diffs for them and associated new diffs with
6557	* current settngs. So, since we don't use saveSettings(),
6558	* we need to inform callbacks manually. */
6559	if (mType == IsSessionMachine)
6560	mParent->onMachineDataChange(mData->mUuid);
6561	}
6562	}
6563	while (0);
6564	}
6565	while (0);
6566
6567	break;
6568	}
6569
6570	Assert ((op == SaveSS_UpdateAttrsOp && !recreateWholeTree) \|\|
6571	op == SaveSS_UpdateAllOp);
6572
6573	Key snapshotsNode;
6574	Key snapshotNode;
6575
6576	if (!recreateWholeTree)
6577	{
6578	rc = findSnapshotNode (aSnapshot, aMachineNode,
6579	&snapshotsNode, &snapshotNode);
6580	CheckComRCBreakRC (rc);
6581	}
6582
6583	if (snapshotsNode.isNull())
6584	snapshotsNode = aMachineNode;
6585
6586	if (op == SaveSS_UpdateAttrsOp)
6587	rc = aSnapshot->saveSnapshot(snapshotNode, true /* aAttrsOnly */);
6588	else
6589	{
6590	if (!snapshotNode.isNull())
6591	snapshotNode.zap();
6592
6593	snapshotNode = snapshotsNode.appendKey ("Snapshot");
6594	rc = aSnapshot->saveSnapshot(snapshotNode, false /* aAttrsOnly */);
6595	CheckComRCBreakRC (rc);
6596	}
6597	}
6598	while (0);
6599
6600	if (SUCCEEDED(rc))
6601	{
6602	/* update currentSnapshot when appropriate */
6603	if (aOpFlags & SaveSS_CurrentId)
6604	{
6605	if (!mData->mCurrentSnapshot.isNull())
6606	aMachineNode.setValue<Guid>("currentSnapshot",
6607	mData->mCurrentSnapshot->getId());
6608	else
6609	aMachineNode.zapValue ("currentSnapshot");
6610	}
6611	if (aOpFlags & SaveSS_CurStateModified)
6612	{
6613	/* defaults to true */
6614	aMachineNode.setValueOr <bool> ("currentStateModified",
6615	!!mData->mCurrentStateModified, true);
6616	}
6617	}
6618
6619	return rc;
6620	}
6621
6622	/**
6623	* Saves the VM hardware configuration. It is assumed that the
6624	* given node is empty.
6625	*
6626	* @param aNode <Hardware> node to save the VM hardware confguration to.
6627	*/
6628	HRESULT Machine::saveHardware (settings::Key &aNode)
6629	{
6630	using namespace settings;
6631
6632	AssertReturn(!aNode.isNull(), E_INVALIDARG);
6633
6634	HRESULT rc = S_OK;
6635
6636	/* The hardware version attribute (optional).
6637	Automatically upgrade from 1 to 2 when there is no saved state. (ugly!) */
6638	{
6639	Utf8Str hwVersion = mHWData->mHWVersion;
6640	if ( hwVersion.compare ("1") == 0
6641	&& mSSData->mStateFilePath.isEmpty())
6642	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. */
6643	if (hwVersion.compare ("2") == 0) /** @todo get the default from the schema if possible. */
6644	aNode.zapValue ("version");
6645	else
6646	aNode.setStringValue ("version", hwVersion.raw());
6647	}
6648
6649	/* CPU (optional, but always created atm) */
6650	{
6651	Key cpuNode = aNode.createKey ("CPU");
6652	Key hwVirtExNode = cpuNode.createKey ("HardwareVirtEx");
6653	const char *value = NULL;
6654	if (mHWData->mHWVirtExEnabled)
6655	value = "true";
6656	else
6657	value = "false";
6658	hwVirtExNode.setStringValue ("enabled", value);
6659
6660	/* Nested paging (optional, default is false) */
6661	if (mHWData->mHWVirtExNestedPagingEnabled)
6662	{
6663	Key HWVirtExNestedPagingNode = cpuNode.createKey ("HardwareVirtExNestedPaging");
6664	HWVirtExNestedPagingNode.setValue <bool> ("enabled", true);
6665	}
6666
6667	/* VPID (optional, default is false) */
6668	if (mHWData->mHWVirtExVPIDEnabled)
6669	{
6670	Key HWVirtExVPIDNode = cpuNode.createKey ("HardwareVirtExVPID");
6671	HWVirtExVPIDNode.setValue <bool> ("enabled", true);
6672	}
6673
6674	/* PAE (optional, default is false) */
6675	if (mHWData->mPAEEnabled)
6676	{
6677	Key PAENode = cpuNode.createKey ("PAE");
6678	PAENode.setValue <bool> ("enabled", true);
6679	}
6680
6681	/* CPU count */
6682	cpuNode.setValue <ULONG> ("count", mHWData->mCPUCount);
6683	}
6684
6685	/* memory (required) */
6686	{
6687	Key memoryNode = aNode.createKey ("Memory");
6688	memoryNode.setValue <ULONG> ("RAMSize", mHWData->mMemorySize);
6689	}
6690
6691	/* boot (required) */
6692	{
6693	Key bootNode = aNode.createKey ("Boot");
6694
6695	for (ULONG pos = 0; pos < RT_ELEMENTS (mHWData->mBootOrder); ++ pos)
6696	{
6697	const char *device = NULL;
6698	switch (mHWData->mBootOrder [pos])
6699	{
6700	case DeviceType_Null:
6701	/* skip, this is allowed for <Order> nodes
6702	* when loading, the default value NoDevice will remain */
6703	continue;
6704	case DeviceType_Floppy: device = "Floppy"; break;
6705	case DeviceType_DVD: device = "DVD"; break;
6706	case DeviceType_HardDisk: device = "HardDisk"; break;
6707	case DeviceType_Network: device = "Network"; break;
6708	default:
6709	{
6710	ComAssertMsgFailedRet (("Invalid boot device: %d",
6711	mHWData->mBootOrder [pos]),
6712	E_FAIL);
6713	}
6714	}
6715
6716	Key orderNode = bootNode.appendKey ("Order");
6717	orderNode.setValue <ULONG> ("position", pos + 1);
6718	orderNode.setStringValue ("device", device);
6719	}
6720	}
6721
6722	/* display (required) */
6723	{
6724	Key displayNode = aNode.createKey ("Display");
6725	displayNode.setValue <ULONG> ("VRAMSize", mHWData->mVRAMSize);
6726	displayNode.setValue <ULONG> ("monitorCount", mHWData->mMonitorCount);
6727	displayNode.setValue <bool> ("accelerate3D", !!mHWData->mAccelerate3DEnabled);
6728	}
6729
6730	#ifdef VBOX_WITH_VRDP
6731	/* VRDP settings (optional) */
6732	rc = mVRDPServer->saveSettings (aNode);
6733	CheckComRCReturnRC(rc);
6734	#endif
6735
6736	/* BIOS (required) */
6737	rc = mBIOSSettings->saveSettings (aNode);
6738	CheckComRCReturnRC(rc);
6739
6740	/* DVD drive (required) */
6741	rc = mDVDDrive->saveSettings (aNode);
6742	CheckComRCReturnRC(rc);
6743
6744	/* Flooppy drive (required) */
6745	rc = mFloppyDrive->saveSettings (aNode);
6746	CheckComRCReturnRC(rc);
6747
6748	/* USB Controller (required) */
6749	rc = mUSBController->saveSettings (aNode);
6750	CheckComRCReturnRC(rc);
6751
6752	/* Network adapters (required) */
6753	{
6754	Key nwNode = aNode.createKey ("Network");
6755
6756	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
6757	{
6758	Key adapterNode = nwNode.appendKey ("Adapter");
6759
6760	adapterNode.setValue <ULONG> ("slot", slot);
6761
6762	rc = mNetworkAdapters [slot]->saveSettings (adapterNode);
6763	CheckComRCReturnRC(rc);
6764	}
6765	}
6766
6767	/* Serial ports */
6768	{
6769	Key serialNode = aNode.createKey ("UART");
6770
6771	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); ++ slot)
6772	{
6773	Key portNode = serialNode.appendKey ("Port");
6774
6775	portNode.setValue <ULONG> ("slot", slot);
6776
6777	rc = mSerialPorts [slot]->saveSettings (portNode);
6778	CheckComRCReturnRC(rc);
6779	}
6780	}
6781
6782	/* Parallel ports */
6783	{
6784	Key parallelNode = aNode.createKey ("LPT");
6785
6786	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); ++ slot)
6787	{
6788	Key portNode = parallelNode.appendKey ("Port");
6789
6790	portNode.setValue <ULONG> ("slot", slot);
6791
6792	rc = mParallelPorts [slot]->saveSettings (portNode);
6793	CheckComRCReturnRC(rc);
6794	}
6795	}
6796
6797	/* Audio adapter */
6798	rc = mAudioAdapter->saveSettings (aNode);
6799	CheckComRCReturnRC(rc);
6800
6801	/* Shared folders */
6802	{
6803	Key sharedFoldersNode = aNode.createKey ("SharedFolders");
6804
6805	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
6806	it != mHWData->mSharedFolders.end();
6807	++ it)
6808	{
6809	ComObjPtr<SharedFolder> folder = *it;
6810
6811	Key folderNode = sharedFoldersNode.appendKey ("SharedFolder");
6812
6813	/* all are mandatory */
6814	folderNode.setValue <Bstr> ("name", folder->name());
6815	folderNode.setValue <Bstr> ("hostPath", folder->hostPath());
6816	folderNode.setValue <bool> ("writable", !!folder->writable());
6817	}
6818	}
6819
6820	/* Clipboard */
6821	{
6822	Key clipNode = aNode.createKey ("Clipboard");
6823
6824	const char *modeStr = "Disabled";
6825	switch (mHWData->mClipboardMode)
6826	{
6827	case ClipboardMode_Disabled:
6828	/* already assigned */
6829	break;
6830	case ClipboardMode_HostToGuest:
6831	modeStr = "HostToGuest";
6832	break;
6833	case ClipboardMode_GuestToHost:
6834	modeStr = "GuestToHost";
6835	break;
6836	case ClipboardMode_Bidirectional:
6837	modeStr = "Bidirectional";
6838	break;
6839	default:
6840	ComAssertMsgFailedRet (("Clipboard mode %d is invalid",
6841	mHWData->mClipboardMode),
6842	E_FAIL);
6843	}
6844	clipNode.setStringValue ("mode", modeStr);
6845	}
6846
6847	/* Guest */
6848	{
6849	Key guestNode = aNode.createKey ("Guest");
6850
6851	guestNode.setValue <ULONG> ("memoryBalloonSize",
6852	mHWData->mMemoryBalloonSize);
6853	guestNode.setValue <ULONG> ("statisticsUpdateInterval",
6854	mHWData->mStatisticsUpdateInterval);
6855	}
6856
6857	#ifdef VBOX_WITH_GUEST_PROPS
6858	/* Guest properties */
6859	try
6860	{
6861	using namespace guestProp;
6862
6863	Key guestPropertiesNode = aNode.createKey ("GuestProperties");
6864
6865	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
6866	it != mHWData->mGuestProperties.end(); ++it)
6867	{
6868	HWData::GuestProperty property = *it;
6869
6870	Key propertyNode = guestPropertiesNode.appendKey ("GuestProperty");
6871	char szFlags[MAX_FLAGS_LEN + 1];
6872
6873	propertyNode.setValue <Bstr> ("name", property.mName);
6874	propertyNode.setValue <Bstr> ("value", property.mValue);
6875	propertyNode.setValue <ULONG64> ("timestamp", property.mTimestamp);
6876	writeFlags (property.mFlags, szFlags);
6877	Bstr flags (szFlags);
6878	if (flags.isNull())
6879	return E_OUTOFMEMORY;
6880	propertyNode.setValue <Bstr> ("flags", flags);
6881	}
6882	Bstr emptyStr ("");
6883	if (emptyStr.isNull())
6884	return E_OUTOFMEMORY;
6885	guestPropertiesNode.setValueOr <Bstr> ("notificationPatterns",
6886	mHWData->mGuestPropertyNotificationPatterns,
6887	emptyStr);
6888	}
6889	catch(std::bad_alloc &e)
6890	{
6891	return E_OUTOFMEMORY;
6892	}
6893	#endif /* VBOX_WITH_GUEST_PROPS defined */
6894
6895	AssertComRC (rc);
6896	return rc;
6897	}
6898
6899	/**
6900	* Saves the storage controller configuration.
6901	*
6902	* @param aNode <StorageControllers> node to save the VM hardware confguration to.
6903	*/
6904	HRESULT Machine::saveStorageControllers (settings::Key &aNode)
6905	{
6906	using namespace settings;
6907
6908	AssertReturn(!aNode.isNull(), E_INVALIDARG);
6909
6910	for (StorageControllerList::const_iterator
6911	it = mStorageControllers->begin();
6912	it != mStorageControllers->end();
6913	++ it)
6914	{
6915	HRESULT rc;
6916	const char *type = NULL;
6917	ComObjPtr<StorageController> ctl = *it;
6918
6919	Key ctlNode = aNode.appendKey ("StorageController");
6920
6921	ctlNode.setValue <Bstr> ("name", ctl->name());
6922
6923	switch (ctl->controllerType())
6924	{
6925	case StorageControllerType_IntelAhci: type = "AHCI"; break;
6926	case StorageControllerType_LsiLogic: type = "LsiLogic"; break;
6927	case StorageControllerType_BusLogic: type = "BusLogic"; break;
6928	case StorageControllerType_PIIX3: type = "PIIX3"; break;
6929	case StorageControllerType_PIIX4: type = "PIIX4"; break;
6930	case StorageControllerType_ICH6: type = "ICH6"; break;
6931	default:
6932	ComAssertFailedRet (E_FAIL);
6933	}
6934
6935	ctlNode.setStringValue ("type", type);
6936
6937	/* Save the port count. */
6938	ULONG portCount;
6939	rc = ctl->COMGETTER(PortCount)(&portCount);
6940	ComAssertRCRet(rc, rc);
6941	ctlNode.setValue <ULONG> ("PortCount", portCount);
6942
6943	/* Save IDE emulation settings. */
6944	if (ctl->controllerType() == StorageControllerType_IntelAhci)
6945	{
6946	LONG uVal;
6947
6948	rc = ctl->GetIDEEmulationPort(0, &uVal);
6949	ComAssertRCRet(rc, rc);
6950	ctlNode.setValue <LONG> ("IDE0MasterEmulationPort", uVal);
6951
6952	rc = ctl->GetIDEEmulationPort(1, &uVal);
6953	ComAssertRCRet(rc, rc);
6954	ctlNode.setValue <LONG> ("IDE0SlaveEmulationPort", uVal);
6955
6956	rc = ctl->GetIDEEmulationPort(2, &uVal);
6957	ComAssertRCRet(rc, rc);
6958	ctlNode.setValue <LONG> ("IDE1MasterEmulationPort", uVal);
6959
6960	rc = ctl->GetIDEEmulationPort(3, &uVal);
6961	ComAssertRCRet(rc, rc);
6962	ctlNode.setValue <LONG> ("IDE1SlaveEmulationPort", uVal);
6963	}
6964
6965	/* save the devices now. */
6966	rc = saveStorageDevices(ctl, ctlNode);
6967	ComAssertRCRet(rc, rc);
6968	}
6969
6970	return S_OK;
6971	}
6972
6973	/**
6974	* Saves the hard disk confguration.
6975	* It is assumed that the given node is empty.
6976	*
6977	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
6978	*/
6979	HRESULT Machine::saveStorageDevices (ComObjPtr<StorageController> aStorageController,
6980	settings::Key &aNode)
6981	{
6982	using namespace settings;
6983
6984	AssertReturn(!aNode.isNull(), E_INVALIDARG);
6985
6986	HDData::AttachmentList atts;
6987
6988	HRESULT rc = getHardDiskAttachmentsOfController(aStorageController->name(), atts);
6989	CheckComRCReturnRC(rc);
6990
6991	for (HDData::AttachmentList::const_iterator
6992	it = atts.begin();
6993	it != atts.end();
6994	++ it)
6995	{
6996	Key hdNode = aNode.appendKey ("AttachedDevice");
6997
6998	{
6999	/* device type. Only hard disk allowed atm. */
7000	hdNode.setStringValue ("type", "HardDisk");
7001	/* channel (required) */
7002	hdNode.setValue <LONG> ("port", (*it)->port());
7003	/* device (required) */
7004	hdNode.setValue <LONG> ("device", (*it)->device());
7005	/* ID of the image. */
7006	Key idNode = hdNode.appendKey ("Image");
7007	idNode.setValue <Guid> ("uuid", (*it)->hardDisk()->id());
7008	}
7009	}
7010
7011	return S_OK;
7012	}
7013
7014	/**
7015	* Saves machine state settings as defined by aFlags
7016	* (SaveSTS_* values).
7017	*
7018	* @param aFlags Combination of SaveSTS_* flags.
7019	*
7020	* @note Locks objects for writing.
7021	*/
7022	HRESULT Machine::saveStateSettings (int aFlags)
7023	{
7024	if (aFlags == 0)
7025	return S_OK;
7026
7027	AutoCaller autoCaller(this);
7028	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7029
7030	/* This object's write lock is also necessary to serialize file access
7031	* (prevent concurrent reads and writes) */
7032	AutoWriteLock alock(this);
7033
7034	AssertReturn(isConfigLocked(), E_FAIL);
7035
7036	HRESULT rc = S_OK;
7037
7038	try
7039	{
7040	using namespace settings;
7041	using namespace xml;
7042
7043	/* load the settings file */
7044	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
7045	XmlTreeBackend tree;
7046
7047	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
7048	CheckComRCReturnRC(rc);
7049
7050	Key machineNode = tree.rootKey().key ("Machine");
7051
7052	if (aFlags & SaveSTS_CurStateModified)
7053	{
7054	/* defaults to true */
7055	machineNode.setValueOr <bool> ("currentStateModified",
7056	!!mData->mCurrentStateModified, true);
7057	}
7058
7059	if (aFlags & SaveSTS_StateFilePath)
7060	{
7061	if (mSSData->mStateFilePath)
7062	{
7063	/* try to make the file name relative to the settings file dir */
7064	Utf8Str stateFilePath = mSSData->mStateFilePath;
7065	calculateRelativePath (stateFilePath, stateFilePath);
7066	machineNode.setStringValue ("stateFile", stateFilePath);
7067	}
7068	else
7069	machineNode.zapValue ("stateFile");
7070	}
7071
7072	if (aFlags & SaveSTS_StateTimeStamp)
7073	{
7074	Assert (mData->mMachineState != MachineState_Aborted \|\|
7075	mSSData->mStateFilePath.isNull());
7076
7077	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
7078	mData->mLastStateChange);
7079
7080	/* set the aborted attribute when appropriate, defaults to false */
7081	machineNode.setValueOr <bool> ("aborted",
7082	mData->mMachineState == MachineState_Aborted,
7083	false);
7084	}
7085
7086	/* save settings on success */
7087	rc = VirtualBox::saveSettingsTree (tree, file,
7088	mData->mSettingsFileVersion);
7089	CheckComRCReturnRC(rc);
7090	}
7091	catch (...)
7092	{
7093	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
7094	}
7095
7096	return rc;
7097	}
7098
7099	/**
7100	* Creates differencing hard disks for all normal hard disks attached to this
7101	* machine and a new set of attachments to refer to created disks.
7102	*
7103	* Used when taking a snapshot or when discarding the current state.
7104	*
7105	* This method assumes that mHDData contains the original hard disk attachments
7106	* it needs to create diffs for. On success, these attachments will be replaced
7107	* with the created diffs. On failure, #deleteImplicitDiffs() is implicitly
7108	* called to delete created diffs which will also rollback mHDData and restore
7109	* whatever was backed up before calling this method.
7110	*
7111	* Attachments with non-normal hard disks are left as is.
7112	*
7113	* If @a aOnline is @c false then the original hard disks that require implicit
7114	* diffs will be locked for reading. Otherwise it is assumed that they are
7115	* already locked for writing (when the VM was started). Note that in the latter
7116	* case it is responsibility of the caller to lock the newly created diffs for
7117	* writing if this method succeeds.
7118	*
7119	* @param aFolder Folder where to create diff hard disks.
7120	* @param aProgress Progress object to run (must contain at least as
7121	* many operations left as the number of hard disks
7122	* attached).
7123	* @param aOnline Whether the VM was online prior to this operation.
7124	*
7125	* @note The progress object is not marked as completed, neither on success nor
7126	* on failure. This is a responsibility of the caller.
7127	*
7128	* @note Locks this object for writing.
7129	*/
7130	HRESULT Machine::createImplicitDiffs (const Bstr &aFolder,
7131	ComObjPtr<Progress> &aProgress,
7132	bool aOnline)
7133	{
7134	AssertReturn(!aFolder.isEmpty(), E_FAIL);
7135
7136	AutoCaller autoCaller(this);
7137	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7138
7139	AutoWriteLock alock(this);
7140
7141	/* must be in a protective state because we leave the lock below */
7142	AssertReturn(mData->mMachineState == MachineState_Saving \|\|
7143	mData->mMachineState == MachineState_Discarding, E_FAIL);
7144
7145	HRESULT rc = S_OK;
7146
7147	typedef std::list< ComObjPtr<HardDisk> > LockedMedia;
7148	LockedMedia lockedMedia;
7149
7150	try
7151	{
7152	if (!aOnline)
7153	{
7154	/* lock all attached hard disks early to detect "in use"
7155	* situations before creating actual diffs */
7156	for (HDData::AttachmentList::const_iterator
7157	it = mHDData->mAttachments.begin();
7158	it != mHDData->mAttachments.end();
7159	++ it)
7160	{
7161	ComObjPtr<HardDiskAttachment> hda = *it;
7162	ComObjPtr<HardDisk> hd = hda->hardDisk();
7163
7164	rc = hd->LockRead (NULL);
7165	CheckComRCThrowRC (rc);
7166
7167	lockedMedia.push_back (hd);
7168	}
7169	}
7170
7171	/* remember the current list (note that we don't use backup() since
7172	* mHDData may be already backed up) */
7173	HDData::AttachmentList atts = mHDData->mAttachments;
7174
7175	/* start from scratch */
7176	mHDData->mAttachments.clear();
7177
7178	/* go through remembered attachments and create diffs for normal hard
7179	* disks and attach them */
7180
7181	for (HDData::AttachmentList::const_iterator
7182	it = atts.begin(); it != atts.end(); ++ it)
7183	{
7184	ComObjPtr<HardDiskAttachment> hda = *it;
7185	ComObjPtr<HardDisk> hd = hda->hardDisk();
7186
7187	/* type cannot be changed while attached => no need to lock */
7188	if (hd->type() != HardDiskType_Normal)
7189	{
7190	/* copy the attachment as is */
7191
7192	Assert (hd->type() == HardDiskType_Writethrough);
7193
7194	rc = aProgress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
7195	hd->root()->name().raw()),
7196	1); // weight
7197	CheckComRCThrowRC (rc);
7198
7199	mHDData->mAttachments.push_back (hda);
7200	continue;
7201	}
7202
7203	/* need a diff */
7204
7205	rc = aProgress->setNextOperation(BstrFmt(tr("Creating differencing hard disk for '%s'"),
7206	hd->root()->name().raw()),
7207	1); // weight
7208	CheckComRCThrowRC (rc);
7209
7210	ComObjPtr<HardDisk> diff;
7211	diff.createObject();
7212	rc = diff->init (mParent, hd->preferredDiffFormat(),
7213	BstrFmt ("%ls"RTPATH_SLASH_STR,
7214	mUserData->mSnapshotFolderFull.raw()));
7215	CheckComRCThrowRC (rc);
7216
7217	/* leave the lock before the potentially lengthy operation */
7218	alock.leave();
7219
7220	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard,
7221	&aProgress);
7222
7223	alock.enter();
7224
7225	CheckComRCThrowRC (rc);
7226
7227	rc = diff->attachTo (mData->mUuid);
7228	AssertComRCThrowRC (rc);
7229
7230	/* add a new attachment */
7231	ComObjPtr<HardDiskAttachment> attachment;
7232	attachment.createObject();
7233	rc = attachment->init (diff, hda->controller(), hda->port(),
7234	hda->device(), true /* aImplicit */);
7235	CheckComRCThrowRC (rc);
7236
7237	mHDData->mAttachments.push_back (attachment);
7238	}
7239	}
7240	catch (HRESULT aRC) { rc = aRC; }
7241
7242	/* unlock all hard disks we locked */
7243	if (!aOnline)
7244	{
7245	ErrorInfoKeeper eik;
7246
7247	for (LockedMedia::const_iterator it = lockedMedia.begin();
7248	it != lockedMedia.end(); ++ it)
7249	{
7250	HRESULT rc2 = (*it)->UnlockRead (NULL);
7251	AssertComRC (rc2);
7252	}
7253	}
7254
7255	if (FAILED (rc))
7256	{
7257	MultiResultRef mrc (rc);
7258
7259	mrc = deleteImplicitDiffs();
7260	}
7261
7262	return rc;
7263	}
7264
7265	/**
7266	* Deletes implicit differencing hard disks created either by
7267	* #createImplicitDiffs() or by #AttachHardDisk() and rolls back mHDData.
7268	*
7269	* Note that to delete hard disks created by #AttachHardDisk() this method is
7270	* called from #fixupHardDisks() when the changes are rolled back.
7271	*
7272	* @note Locks this object for writing.
7273	*/
7274	HRESULT Machine::deleteImplicitDiffs()
7275	{
7276	AutoCaller autoCaller(this);
7277	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7278
7279	AutoWriteLock alock(this);
7280
7281	AssertReturn(mHDData.isBackedUp(), E_FAIL);
7282
7283	HRESULT rc = S_OK;
7284
7285	HDData::AttachmentList implicitAtts;
7286
7287	const HDData::AttachmentList &oldAtts =
7288	mHDData.backedUpData()->mAttachments;
7289
7290	/* enumerate new attachments */
7291	for (HDData::AttachmentList::const_iterator
7292	it = mHDData->mAttachments.begin();
7293	it != mHDData->mAttachments.end(); ++ it)
7294	{
7295	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7296
7297	if ((*it)->isImplicit())
7298	{
7299	/* deassociate and mark for deletion */
7300	rc = hd->detachFrom (mData->mUuid);
7301	AssertComRC (rc);
7302	implicitAtts.push_back (*it);
7303	continue;
7304	}
7305
7306	/* was this hard disk attached before? */
7307	HDData::AttachmentList::const_iterator oldIt =
7308	std::find_if(oldAtts.begin(), oldAtts.end(),
7309	HardDiskAttachment::RefersTo (hd));
7310	if (oldIt == oldAtts.end())
7311	{
7312	/* no: de-associate */
7313	rc = hd->detachFrom (mData->mUuid);
7314	AssertComRC (rc);
7315	continue;
7316	}
7317	}
7318
7319	/* rollback hard disk changes */
7320	mHDData.rollback();
7321
7322	MultiResult mrc (S_OK);
7323
7324	/* delete unused implicit diffs */
7325	if (implicitAtts.size() != 0)
7326	{
7327	/* will leave the lock before the potentially lengthy
7328	* operation, so protect with the special state (unless already
7329	* protected) */
7330	MachineState_T oldState = mData->mMachineState;
7331	if (oldState != MachineState_Saving &&
7332	oldState != MachineState_Discarding)
7333	{
7334	setMachineState (MachineState_SettingUp);
7335	}
7336
7337	alock.leave();
7338
7339	for (HDData::AttachmentList::const_iterator
7340	it = implicitAtts.begin();
7341	it != implicitAtts.end(); ++ it)
7342	{
7343	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7344
7345	mrc = hd->deleteStorageAndWait();
7346	}
7347
7348	alock.enter();
7349
7350	if (mData->mMachineState == MachineState_SettingUp)
7351	{
7352	setMachineState (oldState);
7353	}
7354	}
7355
7356	return mrc;
7357	}
7358
7359	/**
7360	* Perform deferred hard disk detachments on success and deletion of implicitly
7361	* created diffs on failure.
7362	*
7363	* Does nothing if the hard disk attachment data (mHDData) is not changed (not
7364	* backed up).
7365	*
7366	* When the data is backed up, this method will commit mHDData if @a aCommit is
7367	* @c true and rollback it otherwise before returning.
7368	*
7369	* If @a aOnline is @c true then this method called with @a aCommit = @c true
7370	* will also unlock the old hard disks for which the new implicit diffs were
7371	* created and will lock these new diffs for writing. When @a aCommit is @c
7372	* false, this argument is ignored.
7373	*
7374	* @param aCommit @c true if called on success.
7375	* @param aOnline Whether the VM was online prior to this operation.
7376	*
7377	* @note Locks this object for writing!
7378	*/
7379	void Machine::fixupHardDisks(bool aCommit, bool aOnline /= false/)
7380	{
7381	AutoCaller autoCaller(this);
7382	AssertComRCReturnVoid (autoCaller.rc());
7383
7384	AutoWriteLock alock(this);
7385
7386	/* no attach/detach operations -- nothing to do */
7387	if (!mHDData.isBackedUp())
7388	return;
7389
7390	HRESULT rc = S_OK;
7391
7392	if (aCommit)
7393	{
7394	HDData::AttachmentList &oldAtts =
7395	mHDData.backedUpData()->mAttachments;
7396
7397	/* enumerate new attachments */
7398	for (HDData::AttachmentList::const_iterator
7399	it = mHDData->mAttachments.begin();
7400	it != mHDData->mAttachments.end(); ++ it)
7401	{
7402	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7403
7404	if ((*it)->isImplicit())
7405	{
7406	/* convert implicit attachment to normal */
7407	(*it)->setImplicit (false);
7408
7409	if (aOnline)
7410	{
7411	rc = hd->LockWrite (NULL);
7412	AssertComRC (rc);
7413
7414	mData->mSession.mLockedMedia.push_back (
7415	Data::Session::LockedMedia::value_type (
7416	ComPtr<IHardDisk> (hd), true));
7417
7418	/* also, relock the old hard disk which is a base for the
7419	* new diff for reading if the VM is online */
7420
7421	ComObjPtr<HardDisk> parent = hd->parent();
7422	/* make the relock atomic */
7423	AutoWriteLock parentLock (parent);
7424	rc = parent->UnlockWrite (NULL);
7425	AssertComRC (rc);
7426	rc = parent->LockRead (NULL);
7427	AssertComRC (rc);
7428
7429	/* XXX actually we should replace the old entry in that
7430	* vector (write lock => read lock) but this would take
7431	* some effort. So lets just ignore the error code in
7432	* SessionMachine::unlockMedia(). */
7433	mData->mSession.mLockedMedia.push_back (
7434	Data::Session::LockedMedia::value_type (
7435	ComPtr<IHardDisk> (parent), false));
7436	}
7437
7438	continue;
7439	}
7440
7441	/* was this hard disk attached before? */
7442	HDData::AttachmentList::iterator oldIt =
7443	std::find_if (oldAtts.begin(), oldAtts.end(),
7444	HardDiskAttachment::RefersTo (hd));
7445	if (oldIt != oldAtts.end())
7446	{
7447	/* yes: remove from old to avoid de-association */
7448	oldAtts.erase (oldIt);
7449	}
7450	}
7451
7452	/* enumerate remaining old attachments and de-associate from the
7453	* current machine state */
7454	for (HDData::AttachmentList::const_iterator it = oldAtts.begin();
7455	it != oldAtts.end(); ++ it)
7456	{
7457	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7458
7459	/* now de-associate from the current machine state */
7460	rc = hd->detachFrom (mData->mUuid);
7461	AssertComRC (rc);
7462
7463	if (aOnline)
7464	{
7465	/* unlock since not used anymore */
7466	MediaState_T state;
7467	rc = hd->UnlockWrite (&state);
7468	/* the disk may be alredy relocked for reading above */
7469	Assert (SUCCEEDED(rc) \|\| state == MediaState_LockedRead);
7470	}
7471	}
7472
7473	/* commit the hard disk changes */
7474	mHDData.commit();
7475
7476	if (mType == IsSessionMachine)
7477	{
7478	/* attach new data to the primary machine and reshare it */
7479	mPeer->mHDData.attach (mHDData);
7480	}
7481	}
7482	else
7483	{
7484	deleteImplicitDiffs();
7485	}
7486
7487	return;
7488	}
7489
7490	/**
7491	* Helper to lock the machine configuration for write access.
7492	*
7493	* @return S_OK or E_FAIL and sets error info on failure
7494	*
7495	* @note Doesn't lock anything (must be called from this object's lock)
7496	*/
7497	HRESULT Machine::lockConfig()
7498	{
7499	HRESULT rc = S_OK;
7500
7501	if (!isConfigLocked())
7502	{
7503	/* open the associated config file */
7504	int vrc = RTFileOpen (&mData->mHandleCfgFile,
7505	Utf8Str (mData->mConfigFileFull),
7506	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
7507	RTFILE_O_DENY_WRITE);
7508	if (RT_FAILURE(vrc) && (vrc != VERR_FILE_NOT_FOUND))
7509	{
7510	/* Open the associated config file only with read access. */
7511	vrc = RTFileOpen (&mData->mHandleCfgFile,
7512	Utf8Str (mData->mConfigFileFull),
7513	RTFILE_O_READ \| RTFILE_O_OPEN \|
7514	RTFILE_O_DENY_NONE);
7515	if (RT_FAILURE(vrc))
7516	{
7517	/* We even cannot open it in read mode, so there's seriously
7518	something wrong. */
7519	rc = setError (E_FAIL,
7520	tr ("Could not even open settings file '%ls' in read mode (%Rrc)"),
7521	mData->mConfigFile.raw(), vrc);
7522	}
7523	else
7524	{
7525	mData->mConfigFileReadonly = TRUE;
7526	}
7527	}
7528	else
7529	{
7530	mData->mConfigFileReadonly = FALSE;
7531	}
7532
7533	if (RT_FAILURE(vrc))
7534	{
7535	mData->mHandleCfgFile = NIL_RTFILE;
7536	mData->mConfigFileReadonly = FALSE;
7537	}
7538	}
7539
7540	LogFlowThisFunc(("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
7541	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
7542	return rc;
7543	}
7544
7545	/**
7546	* Helper to unlock the machine configuration from write access
7547	*
7548	* @return S_OK
7549	*
7550	* @note Doesn't lock anything.
7551	* @note Not thread safe (must be called from this object's lock).
7552	*/
7553	HRESULT Machine::unlockConfig()
7554	{
7555	HRESULT rc = S_OK;
7556
7557	if (isConfigLocked())
7558	{
7559	RTFileFlush (mData->mHandleCfgFile);
7560	RTFileClose (mData->mHandleCfgFile);
7561	/** @todo flush the directory. */
7562	mData->mHandleCfgFile = NIL_RTFILE;
7563	mData->mConfigFileReadonly = FALSE;
7564	}
7565
7566	LogFlowThisFunc(("\n"));
7567
7568	return rc;
7569	}
7570
7571	/**
7572	* Returns true if the settings file is located in the directory named exactly
7573	* as the machine. This will be true if the machine settings structure was
7574	* created by default in #openConfigLoader().
7575	*
7576	* @param aSettingsDir if not NULL, the full machine settings file directory
7577	* name will be assigned there.
7578	*
7579	* @note Doesn't lock anything.
7580	* @note Not thread safe (must be called from this object's lock).
7581	*/
7582	bool Machine::isInOwnDir(Utf8Str aSettingsDir / = NULL */)
7583	{
7584	Utf8Str settingsDir = mData->mConfigFileFull;
7585	settingsDir.stripFilename();
7586	char *dirName = RTPathFilename(settingsDir);
7587
7588	AssertReturn(dirName, false);
7589
7590	/* if we don't rename anything on name change, return false shorlty */
7591	if (!mUserData->mNameSync)
7592	return false;
7593
7594	if (aSettingsDir)
7595	*aSettingsDir = settingsDir;
7596
7597	return Bstr (dirName) == mUserData->mName;
7598	}
7599
7600	/**
7601	* @note Locks objects for reading!
7602	*/
7603	bool Machine::isModified()
7604	{
7605	AutoCaller autoCaller(this);
7606	AssertComRCReturn (autoCaller.rc(), false);
7607
7608	AutoReadLock alock(this);
7609
7610	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7611	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
7612	return true;
7613
7614	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7615	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
7616	return true;
7617
7618	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7619	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
7620	return true;
7621
7622	if (!mStorageControllers.isNull())
7623	{
7624	for (StorageControllerList::const_iterator it =
7625	mStorageControllers->begin();
7626	it != mStorageControllers->end();
7627	++ it)
7628	{
7629	if ((*it)->isModified())
7630	return true;
7631	}
7632	}
7633
7634	return
7635	mUserData.isBackedUp() \|\|
7636	mHWData.isBackedUp() \|\|
7637	mHDData.isBackedUp() \|\|
7638	mStorageControllers.isBackedUp() \|\|
7639	#ifdef VBOX_WITH_VRDP
7640	(mVRDPServer && mVRDPServer->isModified()) \|\|
7641	#endif
7642	(mDVDDrive && mDVDDrive->isModified()) \|\|
7643	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
7644	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
7645	(mUSBController && mUSBController->isModified()) \|\|
7646	(mBIOSSettings && mBIOSSettings->isModified());
7647	}
7648
7649	/**
7650	* Returns the logical OR of data.hasActualChanges() of this and all child
7651	* objects.
7652	*
7653	* @param aIgnoreUserData @c true to ignore changes to mUserData
7654	*
7655	* @note Locks objects for reading!
7656	*/
7657	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
7658	{
7659	AutoCaller autoCaller(this);
7660	AssertComRCReturn (autoCaller.rc(), false);
7661
7662	AutoReadLock alock(this);
7663
7664	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7665	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
7666	return true;
7667
7668	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7669	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
7670	return true;
7671
7672	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7673	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
7674	return true;
7675
7676	if (!mStorageControllers.isBackedUp())
7677	{
7678	/* see whether any of the devices has changed its data */
7679	for (StorageControllerList::const_iterator
7680	it = mStorageControllers->begin();
7681	it != mStorageControllers->end();
7682	++ it)
7683	{
7684	if ((*it)->isReallyModified())
7685	return true;
7686	}
7687	}
7688	else
7689	{
7690	if (mStorageControllers->size() != mStorageControllers.backedUpData()->size())
7691	return true;
7692	}
7693
7694	return
7695	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
7696	mHWData.hasActualChanges() \|\|
7697	mHDData.hasActualChanges() \|\|
7698	mStorageControllers.hasActualChanges() \|\|
7699	#ifdef VBOX_WITH_VRDP
7700	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
7701	#endif
7702	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
7703	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
7704	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
7705	(mUSBController && mUSBController->isReallyModified()) \|\|
7706	(mBIOSSettings && mBIOSSettings->isReallyModified());
7707	}
7708
7709	/**
7710	* Discards all changes to machine settings.
7711	*
7712	* @param aNotify Whether to notify the direct session about changes or not.
7713	*
7714	* @note Locks objects for writing!
7715	*/
7716	void Machine::rollback (bool aNotify)
7717	{
7718	AutoCaller autoCaller(this);
7719	AssertComRCReturn (autoCaller.rc(), (void) 0);
7720
7721	AutoWriteLock alock(this);
7722
7723	/* check for changes in own data */
7724
7725	bool sharedFoldersChanged = false, storageChanged = false;
7726
7727	if (aNotify && mHWData.isBackedUp())
7728	{
7729	if (mHWData->mSharedFolders.size() !=
7730	mHWData.backedUpData()->mSharedFolders.size())
7731	sharedFoldersChanged = true;
7732	else
7733	{
7734	for (HWData::SharedFolderList::iterator rit =
7735	mHWData->mSharedFolders.begin();
7736	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
7737	++ rit)
7738	{
7739	for (HWData::SharedFolderList::iterator cit =
7740	mHWData.backedUpData()->mSharedFolders.begin();
7741	cit != mHWData.backedUpData()->mSharedFolders.end();
7742	++ cit)
7743	{
7744	if ((cit)->name() != (rit)->name() \|\|
7745	(cit)->hostPath() != (rit)->hostPath())
7746	{
7747	sharedFoldersChanged = true;
7748	break;
7749	}
7750	}
7751	}
7752	}
7753	}
7754
7755	if (!mStorageControllers.isNull())
7756	{
7757	if (mStorageControllers.isBackedUp())
7758	{
7759	/* unitialize all new devices (absent in the backed up list). */
7760	StorageControllerList::const_iterator it = mStorageControllers->begin();
7761	StorageControllerList *backedList = mStorageControllers.backedUpData();
7762	while (it != mStorageControllers->end())
7763	{
7764	if (std::find (backedList->begin(), backedList->end(), *it ) ==
7765	backedList->end())
7766	{
7767	(*it)->uninit();
7768	}
7769	++ it;
7770	}
7771
7772	/* restore the list */
7773	mStorageControllers.rollback();
7774	}
7775
7776	/* rollback any changes to devices after restoring the list */
7777	StorageControllerList::const_iterator it = mStorageControllers->begin();
7778	while (it != mStorageControllers->end())
7779	{
7780	if ((*it)->isModified())
7781	(*it)->rollback();
7782
7783	++ it;
7784	}
7785	}
7786
7787	mUserData.rollback();
7788
7789	mHWData.rollback();
7790
7791	if (mHDData.isBackedUp())
7792	fixupHardDisks(false /* aCommit */);
7793
7794	/* check for changes in child objects */
7795
7796	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
7797	usbChanged = false;
7798
7799	ComPtr<INetworkAdapter> networkAdapters [RT_ELEMENTS (mNetworkAdapters)];
7800	ComPtr<ISerialPort> serialPorts [RT_ELEMENTS (mSerialPorts)];
7801	ComPtr<IParallelPort> parallelPorts [RT_ELEMENTS (mParallelPorts)];
7802
7803	if (mBIOSSettings)
7804	mBIOSSettings->rollback();
7805
7806	#ifdef VBOX_WITH_VRDP
7807	if (mVRDPServer)
7808	vrdpChanged = mVRDPServer->rollback();
7809	#endif
7810
7811	if (mDVDDrive)
7812	dvdChanged = mDVDDrive->rollback();
7813
7814	if (mFloppyDrive)
7815	floppyChanged = mFloppyDrive->rollback();
7816
7817	if (mAudioAdapter)
7818	mAudioAdapter->rollback();
7819
7820	if (mUSBController)
7821	usbChanged = mUSBController->rollback();
7822
7823	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7824	if (mNetworkAdapters [slot])
7825	if (mNetworkAdapters [slot]->rollback())
7826	networkAdapters [slot] = mNetworkAdapters [slot];
7827
7828	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7829	if (mSerialPorts [slot])
7830	if (mSerialPorts [slot]->rollback())
7831	serialPorts [slot] = mSerialPorts [slot];
7832
7833	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7834	if (mParallelPorts [slot])
7835	if (mParallelPorts [slot]->rollback())
7836	parallelPorts [slot] = mParallelPorts [slot];
7837
7838	if (aNotify)
7839	{
7840	/* inform the direct session about changes */
7841
7842	ComObjPtr<Machine> that = this;
7843	alock.leave();
7844
7845	if (sharedFoldersChanged)
7846	that->onSharedFolderChange();
7847
7848	if (vrdpChanged)
7849	that->onVRDPServerChange();
7850	if (dvdChanged)
7851	that->onDVDDriveChange();
7852	if (floppyChanged)
7853	that->onFloppyDriveChange();
7854	if (usbChanged)
7855	that->onUSBControllerChange();
7856
7857	for (ULONG slot = 0; slot < RT_ELEMENTS (networkAdapters); slot ++)
7858	if (networkAdapters [slot])
7859	that->onNetworkAdapterChange (networkAdapters [slot], FALSE);
7860	for (ULONG slot = 0; slot < RT_ELEMENTS (serialPorts); slot ++)
7861	if (serialPorts [slot])
7862	that->onSerialPortChange (serialPorts [slot]);
7863	for (ULONG slot = 0; slot < RT_ELEMENTS (parallelPorts); slot ++)
7864	if (parallelPorts [slot])
7865	that->onParallelPortChange (parallelPorts [slot]);
7866
7867	if (storageChanged)
7868	that->onStorageControllerChange();
7869	}
7870	}
7871
7872	/**
7873	* Commits all the changes to machine settings.
7874	*
7875	* Note that this operation is supposed to never fail.
7876	*
7877	* @note Locks this object and children for writing.
7878	*/
7879	void Machine::commit()
7880	{
7881	AutoCaller autoCaller(this);
7882	AssertComRCReturnVoid (autoCaller.rc());
7883
7884	AutoCaller peerCaller (mPeer);
7885	AssertComRCReturnVoid (peerCaller.rc());
7886
7887	AutoMultiWriteLock2 alock (mPeer, this);
7888
7889	/*
7890	* use safe commit to ensure Snapshot machines (that share mUserData)
7891	* will still refer to a valid memory location
7892	*/
7893	mUserData.commitCopy();
7894
7895	mHWData.commit();
7896
7897	if (mHDData.isBackedUp())
7898	fixupHardDisks(true /* aCommit */);
7899
7900	mBIOSSettings->commit();
7901	#ifdef VBOX_WITH_VRDP
7902	mVRDPServer->commit();
7903	#endif
7904	mDVDDrive->commit();
7905	mFloppyDrive->commit();
7906	mAudioAdapter->commit();
7907	mUSBController->commit();
7908
7909	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7910	mNetworkAdapters [slot]->commit();
7911	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7912	mSerialPorts [slot]->commit();
7913	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7914	mParallelPorts [slot]->commit();
7915
7916	bool commitStorageControllers = false;
7917
7918	if (mStorageControllers.isBackedUp())
7919	{
7920	mStorageControllers.commit();
7921
7922	if (mPeer)
7923	{
7924	AutoWriteLock peerlock (mPeer);
7925
7926	/* Commit all changes to new controllers (this will reshare data with
7927	* peers for thos who have peers) */
7928	StorageControllerList *newList = new StorageControllerList();
7929	StorageControllerList::const_iterator it = mStorageControllers->begin();
7930	while (it != mStorageControllers->end())
7931	{
7932	(*it)->commit();
7933
7934	/* look if this controller has a peer device */
7935	ComObjPtr<StorageController> peer = (*it)->peer();
7936	if (!peer)
7937	{
7938	/* no peer means the device is a newly created one;
7939	* create a peer owning data this device share it with */
7940	peer.createObject();
7941	peer->init (mPeer, it, true / aReshare */);
7942	}
7943	else
7944	{
7945	/* remove peer from the old list */
7946	mPeer->mStorageControllers->remove (peer);
7947	}
7948	/* and add it to the new list */
7949	newList->push_back(peer);
7950
7951	++ it;
7952	}
7953
7954	/* uninit old peer's controllers that are left */
7955	it = mPeer->mStorageControllers->begin();
7956	while (it != mPeer->mStorageControllers->end())
7957	{
7958	(*it)->uninit();
7959	++ it;
7960	}
7961
7962	/* attach new list of controllers to our peer */
7963	mPeer->mStorageControllers.attach (newList);
7964	}
7965	else
7966	{
7967	/* we have no peer (our parent is the newly created machine);
7968	* just commit changes to devices */
7969	commitStorageControllers = true;
7970	}
7971	}
7972	else
7973	{
7974	/* the list of controllers itself is not changed,
7975	* just commit changes to controllers themselves */
7976	commitStorageControllers = true;
7977	}
7978
7979	if (commitStorageControllers)
7980	{
7981	StorageControllerList::const_iterator it = mStorageControllers->begin();
7982	while (it != mStorageControllers->end())
7983	{
7984	(*it)->commit();
7985	++ it;
7986	}
7987	}
7988
7989	if (mType == IsSessionMachine)
7990	{
7991	/* attach new data to the primary machine and reshare it */
7992	mPeer->mUserData.attach (mUserData);
7993	mPeer->mHWData.attach (mHWData);
7994	/* mHDData is reshared by fixupHardDisks */
7995	// mPeer->mHDData.attach (mHDData);
7996	Assert (mPeer->mHDData.data() == mHDData.data());
7997	}
7998	}
7999
8000	/**
8001	* Copies all the hardware data from the given machine.
8002	*
8003	* Currently, only called when the VM is being restored from a snapshot. In
8004	* particular, this implies that the VM is not running during this method's
8005	* call.
8006	*
8007	* @note This method must be called from under this object's lock.
8008	*
8009	* @note This method doesn't call #commit(), so all data remains backed up and
8010	* unsaved.
8011	*/
8012	void Machine::copyFrom (Machine *aThat)
8013	{
8014	AssertReturnVoid (mType == IsMachine \|\| mType == IsSessionMachine);
8015	AssertReturnVoid (aThat->mType == IsSnapshotMachine);
8016
8017	AssertReturnVoid (!Global::IsOnline (mData->mMachineState));
8018
8019	mHWData.assignCopy (aThat->mHWData);
8020
8021	// create copies of all shared folders (mHWData after attiching a copy
8022	// contains just references to original objects)
8023	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
8024	it != mHWData->mSharedFolders.end();
8025	++ it)
8026	{
8027	ComObjPtr<SharedFolder> folder;
8028	folder.createObject();
8029	HRESULT rc = folder->initCopy (machine(), *it);
8030	AssertComRC (rc);
8031	*it = folder;
8032	}
8033
8034	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
8035	#ifdef VBOX_WITH_VRDP
8036	mVRDPServer->copyFrom (aThat->mVRDPServer);
8037	#endif
8038	mDVDDrive->copyFrom (aThat->mDVDDrive);
8039	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
8040	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
8041	mUSBController->copyFrom (aThat->mUSBController);
8042
8043	/* create private copies of all controllers */
8044	mStorageControllers.backup();
8045	mStorageControllers->clear();
8046	for (StorageControllerList::iterator it = aThat->mStorageControllers->begin();
8047	it != aThat->mStorageControllers->end();
8048	++ it)
8049	{
8050	ComObjPtr<StorageController> ctrl;
8051	ctrl.createObject();
8052	ctrl->initCopy (this, *it);
8053	mStorageControllers->push_back(ctrl);
8054	}
8055
8056	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8057	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
8058	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8059	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
8060	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8061	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
8062	}
8063
8064	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8065	void Machine::registerMetrics (PerformanceCollector aCollector, Machine aMachine, RTPROCESS pid)
8066	{
8067	pm::CollectorHAL *hal = aCollector->getHAL();
8068	/* Create sub metrics */
8069	pm::SubMetric *cpuLoadUser = new pm::SubMetric ("CPU/Load/User",
8070	"Percentage of processor time spent in user mode by VM process.");
8071	pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
8072	"Percentage of processor time spent in kernel mode by VM process.");
8073	pm::SubMetric *ramUsageUsed = new pm::SubMetric ("RAM/Usage/Used",
8074	"Size of resident portion of VM process in memory.");
8075	/* Create and register base metrics */
8076	pm::BaseMetric *cpuLoad = new pm::MachineCpuLoadRaw (hal, aMachine, pid,
8077	cpuLoadUser, cpuLoadKernel);
8078	aCollector->registerBaseMetric (cpuLoad);
8079	pm::BaseMetric *ramUsage = new pm::MachineRamUsage (hal, aMachine, pid,
8080	ramUsageUsed);
8081	aCollector->registerBaseMetric (ramUsage);
8082
8083	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser, 0));
8084	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8085	new pm::AggregateAvg()));
8086	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8087	new pm::AggregateMin()));
8088	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
8089	new pm::AggregateMax()));
8090	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel, 0));
8091	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8092	new pm::AggregateAvg()));
8093	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8094	new pm::AggregateMin()));
8095	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
8096	new pm::AggregateMax()));
8097
8098	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed, 0));
8099	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8100	new pm::AggregateAvg()));
8101	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8102	new pm::AggregateMin()));
8103	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
8104	new pm::AggregateMax()));
8105	};
8106
8107	void Machine::unregisterMetrics (PerformanceCollector aCollector, Machine aMachine)
8108	{
8109	aCollector->unregisterMetricsFor (aMachine);
8110	aCollector->unregisterBaseMetricsFor (aMachine);
8111	};
8112	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8113
8114
8115	/////////////////////////////////////////////////////////////////////////////
8116	// SessionMachine class
8117	/////////////////////////////////////////////////////////////////////////////
8118
8119	/** Task structure for asynchronous VM operations */
8120	struct SessionMachine::Task
8121	{
8122	Task (SessionMachine m, Progress p)
8123	: machine (m), progress (p)
8124	, state (m->mData->mMachineState) // save the current machine state
8125	, subTask (false)
8126	{}
8127
8128	void modifyLastState (MachineState_T s)
8129	{
8130	const_cast <MachineState_T > (&state) = s;
8131	}
8132
8133	virtual void handler() = 0;
8134
8135	ComObjPtr<SessionMachine> machine;
8136	ComObjPtr<Progress> progress;
8137	const MachineState_T state;
8138
8139	bool subTask : 1;
8140	};
8141
8142	/** Take snapshot task */
8143	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
8144	{
8145	TakeSnapshotTask (SessionMachine *m)
8146	: Task (m, NULL) {}
8147
8148	void handler() { machine->takeSnapshotHandler (*this); }
8149	};
8150
8151	/** Discard snapshot task */
8152	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
8153	{
8154	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
8155	: Task (m, p)
8156	, snapshot (s) {}
8157
8158	DiscardSnapshotTask (const Task &task, Snapshot *s)
8159	: Task (task)
8160	, snapshot (s) {}
8161
8162	void handler() { machine->discardSnapshotHandler (*this); }
8163
8164	ComObjPtr<Snapshot> snapshot;
8165	};
8166
8167	/** Discard current state task */
8168	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
8169	{
8170	DiscardCurrentStateTask (SessionMachine m, Progress p,
8171	bool discardCurSnapshot)
8172	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
8173
8174	void handler() { machine->discardCurrentStateHandler (*this); }
8175
8176	const bool discardCurrentSnapshot;
8177	};
8178
8179	////////////////////////////////////////////////////////////////////////////////
8180
8181	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
8182
8183	HRESULT SessionMachine::FinalConstruct()
8184	{
8185	LogFlowThisFunc(("\n"));
8186
8187	/* set the proper type to indicate we're the SessionMachine instance */
8188	unconst(mType) = IsSessionMachine;
8189
8190	#if defined(RT_OS_WINDOWS)
8191	mIPCSem = NULL;
8192	#elif defined(RT_OS_OS2)
8193	mIPCSem = NULLHANDLE;
8194	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8195	mIPCSem = -1;
8196	#else
8197	# error "Port me!"
8198	#endif
8199
8200	return S_OK;
8201	}
8202
8203	void SessionMachine::FinalRelease()
8204	{
8205	LogFlowThisFunc(("\n"));
8206
8207	uninit (Uninit::Unexpected);
8208	}
8209
8210	/**
8211	* @note Must be called only by Machine::openSession() from its own write lock.
8212	*/
8213	HRESULT SessionMachine::init (Machine *aMachine)
8214	{
8215	LogFlowThisFuncEnter();
8216	LogFlowThisFunc(("mName={%ls}\n", aMachine->mUserData->mName.raw()));
8217
8218	AssertReturn(aMachine, E_INVALIDARG);
8219
8220	AssertReturn(aMachine->lockHandle()->isWriteLockOnCurrentThread(), E_FAIL);
8221
8222	/* Enclose the state transition NotReady->InInit->Ready */
8223	AutoInitSpan autoInitSpan(this);
8224	AssertReturn(autoInitSpan.isOk(), E_FAIL);
8225
8226	/* create the interprocess semaphore */
8227	#if defined(RT_OS_WINDOWS)
8228	mIPCSemName = aMachine->mData->mConfigFileFull;
8229	for (size_t i = 0; i < mIPCSemName.length(); i++)
8230	if (mIPCSemName[i] == '\\')
8231	mIPCSemName[i] = '/';
8232	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
8233	ComAssertMsgRet (mIPCSem,
8234	("Cannot create IPC mutex '%ls', err=%d",
8235	mIPCSemName.raw(), ::GetLastError()),
8236	E_FAIL);
8237	#elif defined(RT_OS_OS2)
8238	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%RTuuid}",
8239	aMachine->mData->mUuid.raw());
8240	mIPCSemName = ipcSem;
8241	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
8242	ComAssertMsgRet (arc == NO_ERROR,
8243	("Cannot create IPC mutex '%s', arc=%ld",
8244	ipcSem.raw(), arc),
8245	E_FAIL);
8246	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8247	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8248	# if defined(RT_OS_FREEBSD) && (HC_ARCH_BITS == 64)
8249	/** @todo Check that this still works correctly. */
8250	AssertCompileSize(key_t, 8);
8251	# else
8252	AssertCompileSize(key_t, 4);
8253	# endif
8254	key_t key;
8255	mIPCSem = -1;
8256	mIPCKey = "0";
8257	for (uint32_t i = 0; i < 1 << 24; i++)
8258	{
8259	key = ((uint32_t)'V' << 24) \| i;
8260	int sem = ::semget (key, 1, S_IRUSR \| S_IWUSR \| IPC_CREAT \| IPC_EXCL);
8261	if (sem >= 0 \|\| (errno != EEXIST && errno != EACCES))
8262	{
8263	mIPCSem = sem;
8264	if (sem >= 0)
8265	mIPCKey = BstrFmt ("%u", key);
8266	break;
8267	}
8268	}
8269	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8270	Utf8Str semName = aMachine->mData->mConfigFileFull;
8271	char *pszSemName = NULL;
8272	RTStrUtf8ToCurrentCP (&pszSemName, semName);
8273	key_t key = ::ftok (pszSemName, 'V');
8274	RTStrFree (pszSemName);
8275
8276	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
8277	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8278
8279	int errnoSave = errno;
8280	if (mIPCSem < 0 && errnoSave == ENOSYS)
8281	{
8282	setError (E_FAIL,
8283	tr ("Cannot create IPC semaphore. Most likely your host kernel lacks "
8284	"support for SysV IPC. Check the host kernel configuration for "
8285	"CONFIG_SYSVIPC=y"));
8286	return E_FAIL;
8287	}
8288	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errnoSave),
8289	E_FAIL);
8290	/* set the initial value to 1 */
8291	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
8292	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
8293	E_FAIL);
8294	#else
8295	# error "Port me!"
8296	#endif
8297
8298	/* memorize the peer Machine */
8299	unconst(mPeer) = aMachine;
8300	/* share the parent pointer */
8301	unconst(mParent) = aMachine->mParent;
8302
8303	/* take the pointers to data to share */
8304	mData.share (aMachine->mData);
8305	mSSData.share (aMachine->mSSData);
8306
8307	mUserData.share (aMachine->mUserData);
8308	mHWData.share (aMachine->mHWData);
8309	mHDData.share (aMachine->mHDData);
8310
8311	mStorageControllers.allocate();
8312	StorageControllerList::const_iterator it = aMachine->mStorageControllers->begin();
8313	while (it != aMachine->mStorageControllers->end())
8314	{
8315	ComObjPtr<StorageController> ctl;
8316	ctl.createObject();
8317	ctl->init(this, *it);
8318	mStorageControllers->push_back (ctl);
8319	++ it;
8320	}
8321
8322	unconst(mBIOSSettings).createObject();
8323	mBIOSSettings->init (this, aMachine->mBIOSSettings);
8324	#ifdef VBOX_WITH_VRDP
8325	/* create another VRDPServer object that will be mutable */
8326	unconst(mVRDPServer).createObject();
8327	mVRDPServer->init (this, aMachine->mVRDPServer);
8328	#endif
8329	/* create another DVD drive object that will be mutable */
8330	unconst(mDVDDrive).createObject();
8331	mDVDDrive->init (this, aMachine->mDVDDrive);
8332	/* create another floppy drive object that will be mutable */
8333	unconst(mFloppyDrive).createObject();
8334	mFloppyDrive->init (this, aMachine->mFloppyDrive);
8335	/* create another audio adapter object that will be mutable */
8336	unconst(mAudioAdapter).createObject();
8337	mAudioAdapter->init (this, aMachine->mAudioAdapter);
8338	/* create a list of serial ports that will be mutable */
8339	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
8340	{
8341	unconst(mSerialPorts [slot]).createObject();
8342	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
8343	}
8344	/* create a list of parallel ports that will be mutable */
8345	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
8346	{
8347	unconst(mParallelPorts [slot]).createObject();
8348	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
8349	}
8350	/* create another USB controller object that will be mutable */
8351	unconst(mUSBController).createObject();
8352	mUSBController->init (this, aMachine->mUSBController);
8353
8354	/* create a list of network adapters that will be mutable */
8355	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
8356	{
8357	unconst(mNetworkAdapters [slot]).createObject();
8358	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
8359	}
8360
8361	/* default is to delete saved state on Saved -> PoweredOff transition */
8362	mRemoveSavedState = true;
8363
8364	/* Confirm a successful initialization when it's the case */
8365	autoInitSpan.setSucceeded();
8366
8367	LogFlowThisFuncLeave();
8368	return S_OK;
8369	}
8370
8371	/**
8372	* Uninitializes this session object. If the reason is other than
8373	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
8374	*
8375	* @param aReason uninitialization reason
8376	*
8377	* @note Locks mParent + this object for writing.
8378	*/
8379	void SessionMachine::uninit (Uninit::Reason aReason)
8380	{
8381	LogFlowThisFuncEnter();
8382	LogFlowThisFunc(("reason=%d\n", aReason));
8383
8384	/*
8385	* Strongly reference ourselves to prevent this object deletion after
8386	* mData->mSession.mMachine.setNull() below (which can release the last
8387	* reference and call the destructor). Important: this must be done before
8388	* accessing any members (and before AutoUninitSpan that does it as well).
8389	* This self reference will be released as the very last step on return.
8390	*/
8391	ComObjPtr<SessionMachine> selfRef = this;
8392
8393	/* Enclose the state transition Ready->InUninit->NotReady */
8394	AutoUninitSpan autoUninitSpan(this);
8395	if (autoUninitSpan.uninitDone())
8396	{
8397	LogFlowThisFunc(("Already uninitialized\n"));
8398	LogFlowThisFuncLeave();
8399	return;
8400	}
8401
8402	if (autoUninitSpan.initFailed())
8403	{
8404	/* We've been called by init() because it's failed. It's not really
8405	* necessary (nor it's safe) to perform the regular uninit sequense
8406	* below, the following is enough.
8407	*/
8408	LogFlowThisFunc(("Initialization failed.\n"));
8409	#if defined(RT_OS_WINDOWS)
8410	if (mIPCSem)
8411	::CloseHandle (mIPCSem);
8412	mIPCSem = NULL;
8413	#elif defined(RT_OS_OS2)
8414	if (mIPCSem != NULLHANDLE)
8415	::DosCloseMutexSem (mIPCSem);
8416	mIPCSem = NULLHANDLE;
8417	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8418	if (mIPCSem >= 0)
8419	::semctl (mIPCSem, 0, IPC_RMID);
8420	mIPCSem = -1;
8421	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8422	mIPCKey = "0";
8423	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8424	#else
8425	# error "Port me!"
8426	#endif
8427	uninitDataAndChildObjects();
8428	mData.free();
8429	unconst(mParent).setNull();
8430	unconst(mPeer).setNull();
8431	LogFlowThisFuncLeave();
8432	return;
8433	}
8434
8435	/* We need to lock this object in uninit() because the lock is shared
8436	* with mPeer (as well as data we modify below). mParent->addProcessToReap()
8437	* and others need mParent lock. */
8438	AutoMultiWriteLock2 alock (mParent, this);
8439
8440	#ifdef VBOX_WITH_RESOURCE_USAGE_API
8441	unregisterMetrics (mParent->performanceCollector(), mPeer);
8442	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
8443
8444	MachineState_T lastState = mData->mMachineState;
8445	NOREF(lastState);
8446
8447	if (aReason == Uninit::Abnormal)
8448	{
8449	LogWarningThisFunc(("ABNORMAL client termination! (wasBusy=%d)\n",
8450	Global::IsOnlineOrTransient (lastState)));
8451
8452	/* reset the state to Aborted */
8453	if (mData->mMachineState != MachineState_Aborted)
8454	setMachineState (MachineState_Aborted);
8455	}
8456
8457	if (isModified())
8458	{
8459	LogWarningThisFunc(("Discarding unsaved settings changes!\n"));
8460	rollback (false /* aNotify */);
8461	}
8462
8463	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
8464	if (mSnapshotData.mStateFilePath)
8465	{
8466	LogWarningThisFunc(("canceling failed save state request!\n"));
8467	endSavingState (FALSE /* aSuccess */);
8468	}
8469	else if (!mSnapshotData.mSnapshot.isNull())
8470	{
8471	LogWarningThisFunc(("canceling untaken snapshot!\n"));
8472	endTakingSnapshot (FALSE /* aSuccess */);
8473	}
8474
8475	#ifdef VBOX_WITH_USB
8476	/* release all captured USB devices */
8477	if (aReason == Uninit::Abnormal && Global::IsOnline (lastState))
8478	{
8479	/* Console::captureUSBDevices() is called in the VM process only after
8480	* setting the machine state to Starting or Restoring.
8481	* Console::detachAllUSBDevices() will be called upon successful
8482	* termination. So, we need to release USB devices only if there was
8483	* an abnormal termination of a running VM.
8484	*
8485	* This is identical to SessionMachine::DetachAllUSBDevices except
8486	* for the aAbnormal argument. */
8487	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8488	AssertComRC (rc);
8489	NOREF (rc);
8490
8491	USBProxyService *service = mParent->host()->usbProxyService();
8492	if (service)
8493	service->detachAllDevicesFromVM (this, true /* aDone /, true / aAbnormal */);
8494	}
8495	#endif /* VBOX_WITH_USB */
8496
8497	if (!mData->mSession.mType.isNull())
8498	{
8499	/* mType is not null when this machine's process has been started by
8500	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
8501	* need to queue the PID to reap the process (and avoid zombies on
8502	* Linux). */
8503	Assert (mData->mSession.mPid != NIL_RTPROCESS);
8504	mParent->addProcessToReap (mData->mSession.mPid);
8505	}
8506
8507	mData->mSession.mPid = NIL_RTPROCESS;
8508
8509	if (aReason == Uninit::Unexpected)
8510	{
8511	/* Uninitialization didn't come from #checkForDeath(), so tell the
8512	* client watcher thread to update the set of machines that have open
8513	* sessions. */
8514	mParent->updateClientWatcher();
8515	}
8516
8517	/* uninitialize all remote controls */
8518	if (mData->mSession.mRemoteControls.size())
8519	{
8520	LogFlowThisFunc(("Closing remote sessions (%d):\n",
8521	mData->mSession.mRemoteControls.size()));
8522
8523	Data::Session::RemoteControlList::iterator it =
8524	mData->mSession.mRemoteControls.begin();
8525	while (it != mData->mSession.mRemoteControls.end())
8526	{
8527	LogFlowThisFunc((" Calling remoteControl->Uninitialize()...\n"));
8528	HRESULT rc = (*it)->Uninitialize();
8529	LogFlowThisFunc((" remoteControl->Uninitialize() returned %08X\n", rc));
8530	if (FAILED (rc))
8531	LogWarningThisFunc(("Forgot to close the remote session?\n"));
8532	++ it;
8533	}
8534	mData->mSession.mRemoteControls.clear();
8535	}
8536
8537	/*
8538	* An expected uninitialization can come only from #checkForDeath().
8539	* Otherwise it means that something's got really wrong (for examlple,
8540	* the Session implementation has released the VirtualBox reference
8541	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
8542	* etc). However, it's also possible, that the client releases the IPC
8543	* semaphore correctly (i.e. before it releases the VirtualBox reference),
8544	* but the VirtualBox release event comes first to the server process.
8545	* This case is practically possible, so we should not assert on an
8546	* unexpected uninit, just log a warning.
8547	*/
8548
8549	if ((aReason == Uninit::Unexpected))
8550	LogWarningThisFunc(("Unexpected SessionMachine uninitialization!\n"));
8551
8552	if (aReason != Uninit::Normal)
8553	{
8554	mData->mSession.mDirectControl.setNull();
8555	}
8556	else
8557	{
8558	/* this must be null here (see #OnSessionEnd()) */
8559	Assert (mData->mSession.mDirectControl.isNull());
8560	Assert (mData->mSession.mState == SessionState_Closing);
8561	Assert (!mData->mSession.mProgress.isNull());
8562
8563	mData->mSession.mProgress->notifyComplete (S_OK);
8564	mData->mSession.mProgress.setNull();
8565	}
8566
8567	/* remove the association between the peer machine and this session machine */
8568	Assert (mData->mSession.mMachine == this \|\|
8569	aReason == Uninit::Unexpected);
8570
8571	/* reset the rest of session data */
8572	mData->mSession.mMachine.setNull();
8573	mData->mSession.mState = SessionState_Closed;
8574	mData->mSession.mType.setNull();
8575
8576	/* close the interprocess semaphore before leaving the shared lock */
8577	#if defined(RT_OS_WINDOWS)
8578	if (mIPCSem)
8579	::CloseHandle (mIPCSem);
8580	mIPCSem = NULL;
8581	#elif defined(RT_OS_OS2)
8582	if (mIPCSem != NULLHANDLE)
8583	::DosCloseMutexSem (mIPCSem);
8584	mIPCSem = NULLHANDLE;
8585	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8586	if (mIPCSem >= 0)
8587	::semctl (mIPCSem, 0, IPC_RMID);
8588	mIPCSem = -1;
8589	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8590	mIPCKey = "0";
8591	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
8592	#else
8593	# error "Port me!"
8594	#endif
8595
8596	/* fire an event */
8597	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
8598
8599	uninitDataAndChildObjects();
8600
8601	/* free the essential data structure last */
8602	mData.free();
8603
8604	/* leave the shared lock before setting the below two to NULL */
8605	alock.leave();
8606
8607	unconst(mParent).setNull();
8608	unconst(mPeer).setNull();
8609
8610	LogFlowThisFuncLeave();
8611	}
8612
8613	// util::Lockable interface
8614	////////////////////////////////////////////////////////////////////////////////
8615
8616	/**
8617	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
8618	* with the primary Machine instance (mPeer).
8619	*/
8620	RWLockHandle *SessionMachine::lockHandle() const
8621	{
8622	AssertReturn(!mPeer.isNull(), NULL);
8623	return mPeer->lockHandle();
8624	}
8625
8626	// IInternalMachineControl methods
8627	////////////////////////////////////////////////////////////////////////////////
8628
8629	/**
8630	* @note Locks this object for writing.
8631	*/
8632	STDMETHODIMP SessionMachine::SetRemoveSavedState(BOOL aRemove)
8633	{
8634	AutoCaller autoCaller(this);
8635	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8636
8637	AutoWriteLock alock(this);
8638
8639	mRemoveSavedState = aRemove;
8640
8641	return S_OK;
8642	}
8643
8644	/**
8645	* @note Locks the same as #setMachineState() does.
8646	*/
8647	STDMETHODIMP SessionMachine::UpdateState (MachineState_T aMachineState)
8648	{
8649	return setMachineState (aMachineState);
8650	}
8651
8652	/**
8653	* @note Locks this object for reading.
8654	*/
8655	STDMETHODIMP SessionMachine::GetIPCId (BSTR *aId)
8656	{
8657	AutoCaller autoCaller(this);
8658	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8659
8660	AutoReadLock alock(this);
8661
8662	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
8663	mIPCSemName.cloneTo(aId);
8664	return S_OK;
8665	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8666	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
8667	mIPCKey.cloneTo(aId);
8668	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8669	mData->mConfigFileFull.cloneTo(aId);
8670	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
8671	return S_OK;
8672	#else
8673	# error "Port me!"
8674	#endif
8675	}
8676
8677	/**
8678	* Goes through the USB filters of the given machine to see if the given
8679	* device matches any filter or not.
8680	*
8681	* @note Locks the same as USBController::hasMatchingFilter() does.
8682	*/
8683	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
8684	BOOL *aMatched,
8685	ULONG *aMaskedIfs)
8686	{
8687	LogFlowThisFunc(("\n"));
8688
8689	CheckComArgNotNull (aUSBDevice);
8690	CheckComArgOutPointerValid(aMatched);
8691
8692	AutoCaller autoCaller(this);
8693	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8694
8695	#ifdef VBOX_WITH_USB
8696	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
8697	#else
8698	NOREF(aUSBDevice);
8699	NOREF(aMaskedIfs);
8700	*aMatched = FALSE;
8701	#endif
8702
8703	return S_OK;
8704	}
8705
8706	/**
8707	* @note Locks the same as Host::captureUSBDevice() does.
8708	*/
8709	STDMETHODIMP SessionMachine::CaptureUSBDevice (IN_BSTR aId)
8710	{
8711	LogFlowThisFunc(("\n"));
8712
8713	AutoCaller autoCaller(this);
8714	AssertComRCReturnRC(autoCaller.rc());
8715
8716	#ifdef VBOX_WITH_USB
8717	/* if captureDeviceForVM() fails, it must have set extended error info */
8718	MultiResult rc = mParent->host()->checkUSBProxyService();
8719	CheckComRCReturnRC(rc);
8720
8721	USBProxyService *service = mParent->host()->usbProxyService();
8722	AssertReturn(service, E_FAIL);
8723	return service->captureDeviceForVM (this, Guid(aId));
8724	#else
8725	NOREF(aId);
8726	return E_NOTIMPL;
8727	#endif
8728	}
8729
8730	/**
8731	* @note Locks the same as Host::detachUSBDevice() does.
8732	*/
8733	STDMETHODIMP SessionMachine::DetachUSBDevice (IN_BSTR aId, BOOL aDone)
8734	{
8735	LogFlowThisFunc(("\n"));
8736
8737	AutoCaller autoCaller(this);
8738	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8739
8740	#ifdef VBOX_WITH_USB
8741	USBProxyService *service = mParent->host()->usbProxyService();
8742	AssertReturn(service, E_FAIL);
8743	return service->detachDeviceFromVM (this, Guid(aId), !!aDone);
8744	#else
8745	NOREF(aId);
8746	NOREF(aDone);
8747	return E_NOTIMPL;
8748	#endif
8749	}
8750
8751	/**
8752	* Inserts all machine filters to the USB proxy service and then calls
8753	* Host::autoCaptureUSBDevices().
8754	*
8755	* Called by Console from the VM process upon VM startup.
8756	*
8757	* @note Locks what called methods lock.
8758	*/
8759	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
8760	{
8761	LogFlowThisFunc(("\n"));
8762
8763	AutoCaller autoCaller(this);
8764	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8765
8766	#ifdef VBOX_WITH_USB
8767	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
8768	AssertComRC (rc);
8769	NOREF (rc);
8770
8771	USBProxyService *service = mParent->host()->usbProxyService();
8772	AssertReturn(service, E_FAIL);
8773	return service->autoCaptureDevicesForVM (this);
8774	#else
8775	return S_OK;
8776	#endif
8777	}
8778
8779	/**
8780	* Removes all machine filters from the USB proxy service and then calls
8781	* Host::detachAllUSBDevices().
8782	*
8783	* Called by Console from the VM process upon normal VM termination or by
8784	* SessionMachine::uninit() upon abnormal VM termination (from under the
8785	* Machine/SessionMachine lock).
8786	*
8787	* @note Locks what called methods lock.
8788	*/
8789	STDMETHODIMP SessionMachine::DetachAllUSBDevices (BOOL aDone)
8790	{
8791	LogFlowThisFunc(("\n"));
8792
8793	AutoCaller autoCaller(this);
8794	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8795
8796	#ifdef VBOX_WITH_USB
8797	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8798	AssertComRC (rc);
8799	NOREF (rc);
8800
8801	USBProxyService *service = mParent->host()->usbProxyService();
8802	AssertReturn(service, E_FAIL);
8803	return service->detachAllDevicesFromVM (this, !!aDone, false /* aAbnormal */);
8804	#else
8805	NOREF(aDone);
8806	return S_OK;
8807	#endif
8808	}
8809
8810	/**
8811	* @note Locks this object for writing.
8812	*/
8813	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
8814	IProgress **aProgress)
8815	{
8816	LogFlowThisFuncEnter();
8817
8818	AssertReturn(aSession, E_INVALIDARG);
8819	AssertReturn(aProgress, E_INVALIDARG);
8820
8821	AutoCaller autoCaller(this);
8822
8823	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
8824	/*
8825	* We don't assert below because it might happen that a non-direct session
8826	* informs us it is closed right after we've been uninitialized -- it's ok.
8827	*/
8828	CheckComRCReturnRC(autoCaller.rc());
8829
8830	/* get IInternalSessionControl interface */
8831	ComPtr<IInternalSessionControl> control (aSession);
8832
8833	ComAssertRet (!control.isNull(), E_INVALIDARG);
8834
8835	AutoWriteLock alock(this);
8836
8837	if (control.equalsTo (mData->mSession.mDirectControl))
8838	{
8839	ComAssertRet (aProgress, E_POINTER);
8840
8841	/* The direct session is being normally closed by the client process
8842	* ----------------------------------------------------------------- */
8843
8844	/* go to the closing state (essential for all open*Session() calls and
8845	* for #checkForDeath()) */
8846	Assert (mData->mSession.mState == SessionState_Open);
8847	mData->mSession.mState = SessionState_Closing;
8848
8849	/* set direct control to NULL to release the remote instance */
8850	mData->mSession.mDirectControl.setNull();
8851	LogFlowThisFunc(("Direct control is set to NULL\n"));
8852
8853	/* Create the progress object the client will use to wait until
8854	* #checkForDeath() is called to uninitialize this session object after
8855	* it releases the IPC semaphore. */
8856	ComObjPtr<Progress> progress;
8857	progress.createObject();
8858	progress->init (mParent, static_cast <IMachine *> (mPeer),
8859	Bstr (tr ("Closing session")), FALSE /* aCancelable */);
8860	progress.queryInterfaceTo(aProgress);
8861	mData->mSession.mProgress = progress;
8862	}
8863	else
8864	{
8865	/* the remote session is being normally closed */
8866	Data::Session::RemoteControlList::iterator it =
8867	mData->mSession.mRemoteControls.begin();
8868	while (it != mData->mSession.mRemoteControls.end())
8869	{
8870	if (control.equalsTo (*it))
8871	break;
8872	++it;
8873	}
8874	BOOL found = it != mData->mSession.mRemoteControls.end();
8875	ComAssertMsgRet (found, ("The session is not found in the session list!"),
8876	E_INVALIDARG);
8877	mData->mSession.mRemoteControls.remove (*it);
8878	}
8879
8880	LogFlowThisFuncLeave();
8881	return S_OK;
8882	}
8883
8884	/**
8885	* @note Locks this object for writing.
8886	*/
8887	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
8888	{
8889	LogFlowThisFuncEnter();
8890
8891	AssertReturn(aProgress, E_INVALIDARG);
8892	AssertReturn(aStateFilePath, E_POINTER);
8893
8894	AutoCaller autoCaller(this);
8895	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8896
8897	AutoWriteLock alock(this);
8898
8899	AssertReturn(mData->mMachineState == MachineState_Paused &&
8900	mSnapshotData.mLastState == MachineState_Null &&
8901	mSnapshotData.mProgressId.isEmpty() &&
8902	mSnapshotData.mStateFilePath.isNull(),
8903	E_FAIL);
8904
8905	/* memorize the progress ID and add it to the global collection */
8906	Bstr progressId;
8907	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
8908	AssertComRCReturn (rc, rc);
8909	rc = mParent->addProgress (aProgress);
8910	AssertComRCReturn (rc, rc);
8911
8912	Bstr stateFilePath;
8913	/* stateFilePath is null when the machine is not running */
8914	if (mData->mMachineState == MachineState_Paused)
8915	{
8916	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
8917	mUserData->mSnapshotFolderFull.raw(),
8918	RTPATH_DELIMITER, mData->mUuid.raw());
8919	}
8920
8921	/* fill in the snapshot data */
8922	mSnapshotData.mLastState = mData->mMachineState;
8923	mSnapshotData.mProgressId = Guid(progressId);
8924	mSnapshotData.mStateFilePath = stateFilePath;
8925
8926	/* set the state to Saving (this is expected by Console::SaveState()) */
8927	setMachineState (MachineState_Saving);
8928
8929	stateFilePath.cloneTo(aStateFilePath);
8930
8931	return S_OK;
8932	}
8933
8934	/**
8935	* @note Locks mParent + this object for writing.
8936	*/
8937	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
8938	{
8939	LogFlowThisFunc(("\n"));
8940
8941	AutoCaller autoCaller(this);
8942	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8943
8944	/* endSavingState() need mParent lock */
8945	AutoMultiWriteLock2 alock (mParent, this);
8946
8947	AssertReturn(mData->mMachineState == MachineState_Saving &&
8948	mSnapshotData.mLastState != MachineState_Null &&
8949	!mSnapshotData.mProgressId.isEmpty() &&
8950	!mSnapshotData.mStateFilePath.isNull(),
8951	E_FAIL);
8952
8953	/*
8954	* on success, set the state to Saved;
8955	* on failure, set the state to the state we had when BeginSavingState() was
8956	* called (this is expected by Console::SaveState() and
8957	* Console::saveStateThread())
8958	*/
8959	if (aSuccess)
8960	setMachineState (MachineState_Saved);
8961	else
8962	setMachineState (mSnapshotData.mLastState);
8963
8964	return endSavingState (aSuccess);
8965	}
8966
8967	/**
8968	* @note Locks this object for writing.
8969	*/
8970	STDMETHODIMP SessionMachine::AdoptSavedState (IN_BSTR aSavedStateFile)
8971	{
8972	LogFlowThisFunc(("\n"));
8973
8974	AssertReturn(aSavedStateFile, E_INVALIDARG);
8975
8976	AutoCaller autoCaller(this);
8977	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8978
8979	AutoWriteLock alock(this);
8980
8981	AssertReturn(mData->mMachineState == MachineState_PoweredOff \|\|
8982	mData->mMachineState == MachineState_Aborted,
8983	E_FAIL);
8984
8985	Utf8Str stateFilePathFull = aSavedStateFile;
8986	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
8987	if (RT_FAILURE(vrc))
8988	return setError (VBOX_E_FILE_ERROR,
8989	tr ("Invalid saved state file path '%ls' (%Rrc)"),
8990	aSavedStateFile, vrc);
8991
8992	mSSData->mStateFilePath = stateFilePathFull;
8993
8994	/* The below setMachineState() will detect the state transition and will
8995	* update the settings file */
8996
8997	return setMachineState (MachineState_Saved);
8998	}
8999
9000	/**
9001	* @note Locks mParent + this object for writing.
9002	*/
9003	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
9004	IConsole *aInitiator, IN_BSTR aName, IN_BSTR aDescription,
9005	IProgress aProgress, BSTR aStateFilePath,
9006	IProgress **aServerProgress)
9007	{
9008	LogFlowThisFuncEnter();
9009
9010	AssertReturn(aInitiator && aName, E_INVALIDARG);
9011	AssertReturn(aStateFilePath && aServerProgress, E_POINTER);
9012
9013	LogFlowThisFunc(("aName='%ls'\n", aName));
9014
9015	AutoCaller autoCaller(this);
9016	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9017
9018	/* saveSettings() needs mParent lock */
9019	AutoMultiWriteLock2 alock (mParent, this);
9020
9021	AssertReturn((!Global::IsOnlineOrTransient (mData->mMachineState) \|\|
9022	mData->mMachineState == MachineState_Paused) &&
9023	mSnapshotData.mLastState == MachineState_Null &&
9024	mSnapshotData.mSnapshot.isNull() &&
9025	mSnapshotData.mServerProgress.isNull() &&
9026	mSnapshotData.mCombinedProgress.isNull(),
9027	E_FAIL);
9028
9029	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
9030
9031	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
9032	{
9033	/* save all current settings to ensure current changes are committed and
9034	* hard disks are fixed up */
9035	HRESULT rc = saveSettings();
9036	CheckComRCReturnRC(rc);
9037	}
9038
9039	/// @todo NEWMEDIA so far, we decided to allow for Writhethrough hard disks
9040	/// when taking snapshots putting all the responsibility to the user...
9041	#if 0
9042	/* check that there are no Writethrough hard disks attached */
9043	for (HDData::AttachmentList::const_iterator
9044	it = mHDData->mAttachments.begin();
9045	it != mHDData->mAttachments.end();
9046	++ it)
9047	{
9048	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
9049	AutoReadLock hdLock (hd);
9050	if (hd->type() == HardDiskType_Writethrough)
9051	return setError (E_FAIL,
9052	tr ("Cannot take a snapshot because the Writethrough hard disk "
9053	"'%ls' is attached to this virtual machine"),
9054	hd->locationFull().raw());
9055	}
9056	#endif
9057
9058	AssertReturn(aProgress \|\| !takingSnapshotOnline, E_FAIL);
9059
9060	/* create an ID for the snapshot */
9061	Guid snapshotId;
9062	snapshotId.create();
9063
9064	Bstr stateFilePath;
9065	/* stateFilePath is null when the machine is not online nor saved */
9066	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
9067	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
9068	mUserData->mSnapshotFolderFull.raw(),
9069	RTPATH_DELIMITER,
9070	snapshotId.ptr());
9071
9072	/* ensure the directory for the saved state file exists */
9073	if (stateFilePath)
9074	{
9075	HRESULT rc = VirtualBox::ensureFilePathExists (Utf8Str (stateFilePath));
9076	CheckComRCReturnRC(rc);
9077	}
9078
9079	/* create a snapshot machine object */
9080	ComObjPtr<SnapshotMachine> snapshotMachine;
9081	snapshotMachine.createObject();
9082	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
9083	AssertComRCReturn (rc, rc);
9084
9085	Bstr progressDesc = BstrFmt (tr ("Taking snapshot of virtual machine '%ls'"),
9086	mUserData->mName.raw());
9087	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
9088
9089	/* create a server-side progress object (it will be descriptionless when we
9090	* need to combine it with the VM-side progress, i.e. when we're taking a
9091	* snapshot online). The number of operations is: 1 (preparing) + # of
9092	* hard disks + 1 (if the state is saved so we need to copy it)
9093	*/
9094	ComObjPtr<Progress> serverProgress;
9095	serverProgress.createObject();
9096	{
9097	ULONG opCount = 1 + (ULONG)mHDData->mAttachments.size();
9098	if (mData->mMachineState == MachineState_Saved)
9099	opCount ++;
9100	if (takingSnapshotOnline)
9101	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
9102	else
9103	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
9104	opCount, firstOpDesc);
9105	AssertComRCReturn (rc, rc);
9106	}
9107
9108	/* create a combined server-side progress object when necessary */
9109	ComObjPtr<CombinedProgress> combinedProgress;
9110	if (takingSnapshotOnline)
9111	{
9112	combinedProgress.createObject();
9113	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
9114	serverProgress, aProgress);
9115	AssertComRCReturn (rc, rc);
9116	}
9117
9118	/* create a snapshot object */
9119	RTTIMESPEC time;
9120	ComObjPtr<Snapshot> snapshot;
9121	snapshot.createObject();
9122	rc = snapshot->init(mParent,
9123	snapshotId,
9124	aName,
9125	aDescription,
9126	*RTTimeNow(&time),
9127	snapshotMachine,
9128	mData->mCurrentSnapshot);
9129	AssertComRCReturnRC(rc);
9130
9131	/* create and start the task on a separate thread (note that it will not
9132	* start working until we release alock) */
9133	TakeSnapshotTask *task = new TakeSnapshotTask (this);
9134	int vrc = RTThreadCreate (NULL, taskHandler,
9135	(void *) task,
9136	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
9137	if (RT_FAILURE(vrc))
9138	{
9139	snapshot->uninit();
9140	delete task;
9141	ComAssertRCRet (vrc, E_FAIL);
9142	}
9143
9144	/* fill in the snapshot data */
9145	mSnapshotData.mLastState = mData->mMachineState;
9146	mSnapshotData.mSnapshot = snapshot;
9147	mSnapshotData.mServerProgress = serverProgress;
9148	mSnapshotData.mCombinedProgress = combinedProgress;
9149
9150	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
9151	setMachineState (MachineState_Saving);
9152
9153	if (takingSnapshotOnline)
9154	stateFilePath.cloneTo(aStateFilePath);
9155	else
9156	*aStateFilePath = NULL;
9157
9158	serverProgress.queryInterfaceTo(aServerProgress);
9159
9160	LogFlowThisFuncLeave();
9161	return S_OK;
9162	}
9163
9164	/**
9165	* @note Locks this object for writing.
9166	*/
9167	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
9168	{
9169	LogFlowThisFunc(("\n"));
9170
9171	AutoCaller autoCaller(this);
9172	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9173
9174	AutoWriteLock alock(this);
9175
9176	AssertReturn(!aSuccess \|\|
9177	(mData->mMachineState == MachineState_Saving &&
9178	mSnapshotData.mLastState != MachineState_Null &&
9179	!mSnapshotData.mSnapshot.isNull() &&
9180	!mSnapshotData.mServerProgress.isNull() &&
9181	!mSnapshotData.mCombinedProgress.isNull()),
9182	E_FAIL);
9183
9184	/* set the state to the state we had when BeginTakingSnapshot() was called
9185	* (this is expected by Console::TakeSnapshot() and
9186	* Console::saveStateThread()) */
9187	setMachineState (mSnapshotData.mLastState);
9188
9189	return endTakingSnapshot (aSuccess);
9190	}
9191
9192	/**
9193	* @note Locks mParent + this + children objects for writing!
9194	*/
9195	STDMETHODIMP SessionMachine::DiscardSnapshot(IConsole *aInitiator,
9196	IN_BSTR aId,
9197	MachineState_T *aMachineState,
9198	IProgress **aProgress)
9199	{
9200	LogFlowThisFunc(("\n"));
9201
9202	Guid id(aId);
9203	AssertReturn(aInitiator && !id.isEmpty(), E_INVALIDARG);
9204	AssertReturn(aMachineState && aProgress, E_POINTER);
9205
9206	AutoCaller autoCaller(this);
9207	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9208
9209	/* saveSettings() needs mParent lock */
9210	// AutoMultiWriteLock2 alock (mParent, this);
9211
9212	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9213
9214	AutoWriteLock treeLock(snapshotsTreeLockHandle());
9215
9216	ComObjPtr<Snapshot> snapshot;
9217	HRESULT rc = findSnapshot(id, snapshot, true /* aSetError */);
9218	CheckComRCReturnRC(rc);
9219
9220	AutoWriteLock snapshotLock(snapshot);
9221
9222	size_t childrenCount = snapshot->getChildrenCount();
9223	if (childrenCount > 1)
9224	return setError(VBOX_E_INVALID_OBJECT_STATE,
9225	tr("Snapshot '%ls' of the machine '%ls' has more than one child snapshot (%d)"),
9226	snapshot->getName().raw(),
9227	mUserData->mName.raw(),
9228	childrenCount);
9229
9230	/* If the snapshot being discarded is the current one, ensure current
9231	* settings are committed and saved.
9232	*/
9233	if (snapshot == mData->mCurrentSnapshot)
9234	{
9235	if (isModified())
9236	{
9237	snapshotLock.unlock();
9238	treeLock.unlock();
9239
9240	AutoWriteLock vboxLock(mParent);
9241	rc = saveSettings();
9242	CheckComRCReturnRC(rc);
9243	vboxLock.unlock();
9244
9245	treeLock.lock();
9246	snapshotLock.lock();
9247	}
9248	}
9249
9250	/* create a progress object. The number of operations is:
9251	* 1 (preparing) + # of hard disks + 1 if the snapshot is online
9252	*/
9253	ComObjPtr<Progress> progress;
9254	progress.createObject();
9255	rc = progress->init (mParent, aInitiator,
9256	Bstr(Utf8StrFmt(tr("Discarding snapshot '%ls'"),
9257	snapshot->getName().raw())),
9258	FALSE /* aCancelable */,
9259	1 + (ULONG)snapshot->getSnapshotMachine()->mHDData->mAttachments.size() +
9260	(snapshot->stateFilePath().isNull() ? 0 : 1),
9261	Bstr (tr ("Preparing to discard snapshot")));
9262	AssertComRCReturn (rc, rc);
9263
9264	/* create and start the task on a separate thread */
9265	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
9266	int vrc = RTThreadCreate (NULL, taskHandler,
9267	(void *) task,
9268	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
9269	if (RT_FAILURE(vrc))
9270	delete task;
9271	ComAssertRCRet (vrc, E_FAIL);
9272
9273	/* set the proper machine state (note: after creating a Task instance) */
9274	setMachineState (MachineState_Discarding);
9275
9276	/* return the progress to the caller */
9277	progress.queryInterfaceTo(aProgress);
9278
9279	/* return the new state to the caller */
9280	*aMachineState = mData->mMachineState;
9281
9282	return S_OK;
9283	}
9284
9285	/**
9286	* @note Locks this + children objects for writing!
9287	*/
9288	STDMETHODIMP SessionMachine::DiscardCurrentState (
9289	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
9290	{
9291	LogFlowThisFunc(("\n"));
9292
9293	AssertReturn(aInitiator, E_INVALIDARG);
9294	AssertReturn(aMachineState && aProgress, E_POINTER);
9295
9296	AutoCaller autoCaller(this);
9297	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9298
9299	AutoWriteLock alock(this);
9300
9301	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9302
9303	if (mData->mCurrentSnapshot.isNull())
9304	return setError (VBOX_E_INVALID_OBJECT_STATE,
9305	tr ("Could not discard the current state of the machine '%ls' "
9306	"because it doesn't have any snapshots"),
9307	mUserData->mName.raw());
9308
9309	/* create a progress object. The number of operations is: 1 (preparing) + #
9310	* of hard disks + 1 (if we need to copy the saved state file) */
9311	ComObjPtr<Progress> progress;
9312	progress.createObject();
9313	{
9314	ULONG opCount = 1 + (ULONG)mData->mCurrentSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
9315	if (mData->mCurrentSnapshot->stateFilePath())
9316	++ opCount;
9317	progress->init (mParent, aInitiator,
9318	Bstr (tr ("Discarding current machine state")),
9319	FALSE /* aCancelable */, opCount,
9320	Bstr (tr ("Preparing to discard current state")));
9321	}
9322
9323	/* create and start the task on a separate thread (note that it will not
9324	* start working until we release alock) */
9325	DiscardCurrentStateTask *task =
9326	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
9327	int vrc = RTThreadCreate (NULL, taskHandler,
9328	(void *) task,
9329	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
9330	if (RT_FAILURE(vrc))
9331	{
9332	delete task;
9333	ComAssertRCRet (vrc, E_FAIL);
9334	}
9335
9336	/* set the proper machine state (note: after creating a Task instance) */
9337	setMachineState (MachineState_Discarding);
9338
9339	/* return the progress to the caller */
9340	progress.queryInterfaceTo(aProgress);
9341
9342	/* return the new state to the caller */
9343	*aMachineState = mData->mMachineState;
9344
9345	return S_OK;
9346	}
9347
9348	/**
9349	* @note Locks thos object for writing!
9350	*/
9351	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState(IConsole *aInitiator,
9352	MachineState_T *aMachineState,
9353	IProgress **aProgress)
9354	{
9355	LogFlowThisFunc(("\n"));
9356
9357	AssertReturn(aInitiator, E_INVALIDARG);
9358	AssertReturn(aMachineState && aProgress, E_POINTER);
9359
9360	AutoCaller autoCaller(this);
9361	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9362
9363	AutoWriteLock alock(this);
9364
9365	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
9366
9367	if (mData->mCurrentSnapshot.isNull())
9368	return setError (VBOX_E_INVALID_OBJECT_STATE,
9369	tr ("Could not discard the current state of the machine '%ls' "
9370	"because it doesn't have any snapshots"),
9371	mUserData->mName.raw());
9372
9373	/* create a progress object. The number of operations is:
9374	* 1 (preparing) + # of hard disks in the current snapshot +
9375	* # of hard disks in the previous snapshot +
9376	* 1 if we need to copy the saved state file of the previous snapshot +
9377	* 1 if the current snapshot is online
9378	* or (if there is no previous snapshot):
9379	* 1 (preparing) + # of hard disks in the current snapshot * 2 +
9380	* 1 if we need to copy the saved state file of the current snapshot * 2
9381	*/
9382	ComObjPtr<Progress> progress;
9383	progress.createObject();
9384	{
9385	ComObjPtr<Snapshot> curSnapshot = mData->mCurrentSnapshot;
9386	ComObjPtr<Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
9387
9388	ULONG opCount = 1;
9389	if (prevSnapshot)
9390	{
9391	opCount += (ULONG)curSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
9392	opCount += (ULONG)prevSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
9393	if (prevSnapshot->stateFilePath())
9394	++opCount;
9395	if (curSnapshot->stateFilePath())
9396	++opCount;
9397	}
9398	else
9399	{
9400	opCount +=
9401	(ULONG)curSnapshot->getSnapshotMachine()->mHDData->mAttachments.size() * 2;
9402	if (curSnapshot->stateFilePath())
9403	opCount += 2;
9404	}
9405
9406	progress->init(mParent, aInitiator,
9407	Bstr (tr ("Discarding current machine snapshot and state")),
9408	FALSE /* aCancelable */, opCount,
9409	Bstr (tr ("Preparing to discard current snapshot and state")));
9410	}
9411
9412	/* create and start the task on a separate thread */
9413	DiscardCurrentStateTask *task =
9414	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
9415	int vrc = RTThreadCreate(NULL, taskHandler,
9416	(void *) task,
9417	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurStSnp");
9418	if (RT_FAILURE(vrc))
9419	{
9420	delete task;
9421	ComAssertRCRet(vrc, E_FAIL);
9422	}
9423
9424	/* set the proper machine state (note: after creating a Task instance) */
9425	setMachineState(MachineState_Discarding);
9426
9427	/* return the progress to the caller */
9428	progress.queryInterfaceTo(aProgress);
9429
9430	/* return the new state to the caller */
9431	*aMachineState = mData->mMachineState;
9432
9433	return S_OK;
9434	}
9435
9436	STDMETHODIMP SessionMachine::
9437	PullGuestProperties (ComSafeArrayOut(BSTR, aNames),
9438	ComSafeArrayOut(BSTR, aValues),
9439	ComSafeArrayOut(ULONG64, aTimestamps),
9440	ComSafeArrayOut(BSTR, aFlags))
9441	{
9442	LogFlowThisFunc(("\n"));
9443
9444	#ifdef VBOX_WITH_GUEST_PROPS
9445	using namespace guestProp;
9446
9447	AutoCaller autoCaller(this);
9448	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9449
9450	AutoReadLock alock(this);
9451
9452	AssertReturn(!ComSafeArrayOutIsNull(aNames), E_POINTER);
9453	AssertReturn(!ComSafeArrayOutIsNull(aValues), E_POINTER);
9454	AssertReturn(!ComSafeArrayOutIsNull(aTimestamps), E_POINTER);
9455	AssertReturn(!ComSafeArrayOutIsNull(aFlags), E_POINTER);
9456
9457	size_t cEntries = mHWData->mGuestProperties.size();
9458	com::SafeArray<BSTR> names (cEntries);
9459	com::SafeArray<BSTR> values (cEntries);
9460	com::SafeArray<ULONG64> timestamps (cEntries);
9461	com::SafeArray<BSTR> flags (cEntries);
9462	unsigned i = 0;
9463	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
9464	it != mHWData->mGuestProperties.end(); ++it)
9465	{
9466	char szFlags[MAX_FLAGS_LEN + 1];
9467	it->mName.cloneTo(&names[i]);
9468	it->mValue.cloneTo(&values[i]);
9469	timestamps[i] = it->mTimestamp;
9470	writeFlags (it->mFlags, szFlags);
9471	Bstr (szFlags).cloneTo(&flags[i]);
9472	++i;
9473	}
9474	names.detachTo(ComSafeArrayOutArg(aNames));
9475	values.detachTo(ComSafeArrayOutArg(aValues));
9476	timestamps.detachTo(ComSafeArrayOutArg(aTimestamps));
9477	flags.detachTo(ComSafeArrayOutArg(aFlags));
9478	mHWData->mPropertyServiceActive = true;
9479	return S_OK;
9480	#else
9481	ReturnComNotImplemented();
9482	#endif
9483	}
9484
9485	STDMETHODIMP SessionMachine::PushGuestProperties (ComSafeArrayIn (IN_BSTR, aNames),
9486	ComSafeArrayIn (IN_BSTR, aValues),
9487	ComSafeArrayIn (ULONG64, aTimestamps),
9488	ComSafeArrayIn (IN_BSTR, aFlags))
9489	{
9490	LogFlowThisFunc(("\n"));
9491
9492	#ifdef VBOX_WITH_GUEST_PROPS
9493	using namespace guestProp;
9494
9495	AutoCaller autoCaller(this);
9496	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9497
9498	AutoWriteLock alock(this);
9499
9500	/* Temporarily reset the registered flag, so that our machine state
9501	* changes (i.e. mHWData.backup()) succeed. (isMutable() used in
9502	* all setters will return FALSE for a Machine instance if mRegistered
9503	* is TRUE). This is copied from registeredInit(), and may or may not be
9504	* the right way to handle this. */
9505	mData->mRegistered = FALSE;
9506	HRESULT rc = checkStateDependency(MutableStateDep);
9507	LogRel (("checkStateDependency(MutableStateDep) returned 0x%x\n", rc));
9508	CheckComRCReturnRC(rc);
9509
9510	// ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
9511
9512	AssertReturn(!ComSafeArrayInIsNull (aNames), E_POINTER);
9513	AssertReturn(!ComSafeArrayInIsNull (aValues), E_POINTER);
9514	AssertReturn(!ComSafeArrayInIsNull (aTimestamps), E_POINTER);
9515	AssertReturn(!ComSafeArrayInIsNull (aFlags), E_POINTER);
9516
9517	com::SafeArray<IN_BSTR> names (ComSafeArrayInArg (aNames));
9518	com::SafeArray<IN_BSTR> values (ComSafeArrayInArg (aValues));
9519	com::SafeArray<ULONG64> timestamps (ComSafeArrayInArg (aTimestamps));
9520	com::SafeArray<IN_BSTR> flags (ComSafeArrayInArg (aFlags));
9521	DiscardSettings();
9522	mHWData.backup();
9523	mHWData->mGuestProperties.erase (mHWData->mGuestProperties.begin(),
9524	mHWData->mGuestProperties.end());
9525	for (unsigned i = 0; i < names.size(); ++i)
9526	{
9527	uint32_t fFlags = NILFLAG;
9528	validateFlags (Utf8Str (flags[i]).raw(), &fFlags);
9529	HWData::GuestProperty property = { names[i], values[i], timestamps[i], fFlags };
9530	mHWData->mGuestProperties.push_back (property);
9531	}
9532	mHWData->mPropertyServiceActive = false;
9533	alock.unlock();
9534	SaveSettings();
9535	/* Restore the mRegistered flag. */
9536	mData->mRegistered = TRUE;
9537	return S_OK;
9538	#else
9539	ReturnComNotImplemented();
9540	#endif
9541	}
9542
9543	STDMETHODIMP SessionMachine::PushGuestProperty (IN_BSTR aName, IN_BSTR aValue,
9544	ULONG64 aTimestamp, IN_BSTR aFlags)
9545	{
9546	LogFlowThisFunc(("\n"));
9547
9548	#ifdef VBOX_WITH_GUEST_PROPS
9549	using namespace guestProp;
9550
9551	CheckComArgNotNull (aName);
9552	if ((aValue != NULL) && (!VALID_PTR (aValue) \|\| !VALID_PTR (aFlags)))
9553	return E_POINTER; /* aValue can be NULL to indicate deletion */
9554
9555	try
9556	{
9557	Utf8Str utf8Name(aName);
9558	Utf8Str utf8Flags(aFlags);
9559	Utf8Str utf8Patterns(mHWData->mGuestPropertyNotificationPatterns);
9560
9561	uint32_t fFlags = NILFLAG;
9562	if ((aFlags != NULL) && RT_FAILURE(validateFlags (utf8Flags.raw(), &fFlags)))
9563	return E_INVALIDARG;
9564
9565	bool matchAll = false;
9566	if (utf8Patterns.isEmpty())
9567	matchAll = true;
9568
9569	AutoCaller autoCaller(this);
9570	CheckComRCReturnRC(autoCaller.rc());
9571
9572	AutoWriteLock alock(this);
9573
9574	HRESULT rc = checkStateDependency(MutableStateDep);
9575	CheckComRCReturnRC(rc);
9576
9577	mHWData.backup();
9578	for (HWData::GuestPropertyList::iterator iter = mHWData->mGuestProperties.begin();
9579	iter != mHWData->mGuestProperties.end(); ++iter)
9580	if (aName == iter->mName)
9581	{
9582	mHWData->mGuestProperties.erase (iter);
9583	break;
9584	}
9585	if (aValue != NULL)
9586	{
9587	HWData::GuestProperty property = { aName, aValue, aTimestamp, fFlags };
9588	mHWData->mGuestProperties.push_back (property);
9589	}
9590
9591	/* send a callback notification if appropriate */
9592	alock.leave();
9593	if ( matchAll
9594	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
9595	utf8Name.raw(), RTSTR_MAX, NULL)
9596	)
9597	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
9598	}
9599	catch(std::bad_alloc &e)
9600	{
9601	return E_OUTOFMEMORY;
9602	}
9603	return S_OK;
9604	#else
9605	ReturnComNotImplemented();
9606	#endif
9607	}
9608
9609	// public methods only for internal purposes
9610	/////////////////////////////////////////////////////////////////////////////
9611
9612	/**
9613	* Called from the client watcher thread to check for expected or unexpected
9614	* death of the client process that has a direct session to this machine.
9615	*
9616	* On Win32 and on OS/2, this method is called only when we've got the
9617	* mutex (i.e. the client has either died or terminated normally) so it always
9618	* returns @c true (the client is terminated, the session machine is
9619	* uninitialized).
9620	*
9621	* On other platforms, the method returns @c true if the client process has
9622	* terminated normally or abnormally and the session machine was uninitialized,
9623	* and @c false if the client process is still alive.
9624	*
9625	* @note Locks this object for writing.
9626	*/
9627	bool SessionMachine::checkForDeath()
9628	{
9629	Uninit::Reason reason;
9630	bool terminated = false;
9631
9632	/* Enclose autoCaller with a block because calling uninit() from under it
9633	* will deadlock. */
9634	{
9635	AutoCaller autoCaller(this);
9636	if (!autoCaller.isOk())
9637	{
9638	/* return true if not ready, to cause the client watcher to exclude
9639	* the corresponding session from watching */
9640	LogFlowThisFunc(("Already uninitialized!"));
9641	return true;
9642	}
9643
9644	AutoWriteLock alock(this);
9645
9646	/* Determine the reason of death: if the session state is Closing here,
9647	* everything is fine. Otherwise it means that the client did not call
9648	* OnSessionEnd() before it released the IPC semaphore. This may happen
9649	* either because the client process has abnormally terminated, or
9650	* because it simply forgot to call ISession::Close() before exiting. We
9651	* threat the latter also as an abnormal termination (see
9652	* Session::uninit() for details). */
9653	reason = mData->mSession.mState == SessionState_Closing ?
9654	Uninit::Normal :
9655	Uninit::Abnormal;
9656
9657	#if defined(RT_OS_WINDOWS)
9658
9659	AssertMsg (mIPCSem, ("semaphore must be created"));
9660
9661	/* release the IPC mutex */
9662	::ReleaseMutex (mIPCSem);
9663
9664	terminated = true;
9665
9666	#elif defined(RT_OS_OS2)
9667
9668	AssertMsg (mIPCSem, ("semaphore must be created"));
9669
9670	/* release the IPC mutex */
9671	::DosReleaseMutexSem (mIPCSem);
9672
9673	terminated = true;
9674
9675	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
9676
9677	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
9678
9679	int val = ::semctl (mIPCSem, 0, GETVAL);
9680	if (val > 0)
9681	{
9682	/* the semaphore is signaled, meaning the session is terminated */
9683	terminated = true;
9684	}
9685
9686	#else
9687	# error "Port me!"
9688	#endif
9689
9690	} /* AutoCaller block */
9691
9692	if (terminated)
9693	uninit (reason);
9694
9695	return terminated;
9696	}
9697
9698	/**
9699	* @note Locks this object for reading.
9700	*/
9701	HRESULT SessionMachine::onDVDDriveChange()
9702	{
9703	LogFlowThisFunc(("\n"));
9704
9705	AutoCaller autoCaller(this);
9706	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9707
9708	ComPtr<IInternalSessionControl> directControl;
9709	{
9710	AutoReadLock alock(this);
9711	directControl = mData->mSession.mDirectControl;
9712	}
9713
9714	/* ignore notifications sent after #OnSessionEnd() is called */
9715	if (!directControl)
9716	return S_OK;
9717
9718	return directControl->OnDVDDriveChange();
9719	}
9720
9721	/**
9722	* @note Locks this object for reading.
9723	*/
9724	HRESULT SessionMachine::onFloppyDriveChange()
9725	{
9726	LogFlowThisFunc(("\n"));
9727
9728	AutoCaller autoCaller(this);
9729	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9730
9731	ComPtr<IInternalSessionControl> directControl;
9732	{
9733	AutoReadLock alock(this);
9734	directControl = mData->mSession.mDirectControl;
9735	}
9736
9737	/* ignore notifications sent after #OnSessionEnd() is called */
9738	if (!directControl)
9739	return S_OK;
9740
9741	return directControl->OnFloppyDriveChange();
9742	}
9743
9744	/**
9745	* @note Locks this object for reading.
9746	*/
9747	HRESULT SessionMachine::onNetworkAdapterChange (INetworkAdapter *networkAdapter, BOOL changeAdapter)
9748	{
9749	LogFlowThisFunc(("\n"));
9750
9751	AutoCaller autoCaller(this);
9752	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9753
9754	ComPtr<IInternalSessionControl> directControl;
9755	{
9756	AutoReadLock alock(this);
9757	directControl = mData->mSession.mDirectControl;
9758	}
9759
9760	/* ignore notifications sent after #OnSessionEnd() is called */
9761	if (!directControl)
9762	return S_OK;
9763
9764	return directControl->OnNetworkAdapterChange (networkAdapter, changeAdapter);
9765	}
9766
9767	/**
9768	* @note Locks this object for reading.
9769	*/
9770	HRESULT SessionMachine::onSerialPortChange (ISerialPort *serialPort)
9771	{
9772	LogFlowThisFunc(("\n"));
9773
9774	AutoCaller autoCaller(this);
9775	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9776
9777	ComPtr<IInternalSessionControl> directControl;
9778	{
9779	AutoReadLock alock(this);
9780	directControl = mData->mSession.mDirectControl;
9781	}
9782
9783	/* ignore notifications sent after #OnSessionEnd() is called */
9784	if (!directControl)
9785	return S_OK;
9786
9787	return directControl->OnSerialPortChange (serialPort);
9788	}
9789
9790	/**
9791	* @note Locks this object for reading.
9792	*/
9793	HRESULT SessionMachine::onParallelPortChange (IParallelPort *parallelPort)
9794	{
9795	LogFlowThisFunc(("\n"));
9796
9797	AutoCaller autoCaller(this);
9798	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9799
9800	ComPtr<IInternalSessionControl> directControl;
9801	{
9802	AutoReadLock alock(this);
9803	directControl = mData->mSession.mDirectControl;
9804	}
9805
9806	/* ignore notifications sent after #OnSessionEnd() is called */
9807	if (!directControl)
9808	return S_OK;
9809
9810	return directControl->OnParallelPortChange (parallelPort);
9811	}
9812
9813	/**
9814	* @note Locks this object for reading.
9815	*/
9816	HRESULT SessionMachine::onStorageControllerChange ()
9817	{
9818	LogFlowThisFunc(("\n"));
9819
9820	AutoCaller autoCaller(this);
9821	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9822
9823	ComPtr<IInternalSessionControl> directControl;
9824	{
9825	AutoReadLock alock(this);
9826	directControl = mData->mSession.mDirectControl;
9827	}
9828
9829	/* ignore notifications sent after #OnSessionEnd() is called */
9830	if (!directControl)
9831	return S_OK;
9832
9833	return directControl->OnStorageControllerChange ();
9834	}
9835
9836	/**
9837	* @note Locks this object for reading.
9838	*/
9839	HRESULT SessionMachine::onVRDPServerChange()
9840	{
9841	LogFlowThisFunc(("\n"));
9842
9843	AutoCaller autoCaller(this);
9844	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9845
9846	ComPtr<IInternalSessionControl> directControl;
9847	{
9848	AutoReadLock alock(this);
9849	directControl = mData->mSession.mDirectControl;
9850	}
9851
9852	/* ignore notifications sent after #OnSessionEnd() is called */
9853	if (!directControl)
9854	return S_OK;
9855
9856	return directControl->OnVRDPServerChange();
9857	}
9858
9859	/**
9860	* @note Locks this object for reading.
9861	*/
9862	HRESULT SessionMachine::onUSBControllerChange()
9863	{
9864	LogFlowThisFunc(("\n"));
9865
9866	AutoCaller autoCaller(this);
9867	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9868
9869	ComPtr<IInternalSessionControl> directControl;
9870	{
9871	AutoReadLock alock(this);
9872	directControl = mData->mSession.mDirectControl;
9873	}
9874
9875	/* ignore notifications sent after #OnSessionEnd() is called */
9876	if (!directControl)
9877	return S_OK;
9878
9879	return directControl->OnUSBControllerChange();
9880	}
9881
9882	/**
9883	* @note Locks this object for reading.
9884	*/
9885	HRESULT SessionMachine::onSharedFolderChange()
9886	{
9887	LogFlowThisFunc(("\n"));
9888
9889	AutoCaller autoCaller(this);
9890	AssertComRCReturnRC(autoCaller.rc());
9891
9892	ComPtr<IInternalSessionControl> directControl;
9893	{
9894	AutoReadLock alock(this);
9895	directControl = mData->mSession.mDirectControl;
9896	}
9897
9898	/* ignore notifications sent after #OnSessionEnd() is called */
9899	if (!directControl)
9900	return S_OK;
9901
9902	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
9903	}
9904
9905	/**
9906	* Returns @c true if this machine's USB controller reports it has a matching
9907	* filter for the given USB device and @c false otherwise.
9908	*
9909	* @note Locks this object for reading.
9910	*/
9911	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr<HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
9912	{
9913	AutoCaller autoCaller(this);
9914	/* silently return if not ready -- this method may be called after the
9915	* direct machine session has been called */
9916	if (!autoCaller.isOk())
9917	return false;
9918
9919	AutoReadLock alock(this);
9920
9921	#ifdef VBOX_WITH_USB
9922	switch (mData->mMachineState)
9923	{
9924	case MachineState_Starting:
9925	case MachineState_Restoring:
9926	case MachineState_Paused:
9927	case MachineState_Running:
9928	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
9929	default: break;
9930	}
9931	#else
9932	NOREF(aDevice);
9933	NOREF(aMaskedIfs);
9934	#endif
9935	return false;
9936	}
9937
9938	/**
9939	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9940	*/
9941	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
9942	IVirtualBoxErrorInfo *aError,
9943	ULONG aMaskedIfs)
9944	{
9945	LogFlowThisFunc(("\n"));
9946
9947	AutoCaller autoCaller(this);
9948
9949	/* This notification may happen after the machine object has been
9950	* uninitialized (the session was closed), so don't assert. */
9951	CheckComRCReturnRC(autoCaller.rc());
9952
9953	ComPtr<IInternalSessionControl> directControl;
9954	{
9955	AutoReadLock alock(this);
9956	directControl = mData->mSession.mDirectControl;
9957	}
9958
9959	/* fail on notifications sent after #OnSessionEnd() is called, it is
9960	* expected by the caller */
9961	if (!directControl)
9962	return E_FAIL;
9963
9964	/* No locks should be held at this point. */
9965	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9966	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9967
9968	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
9969	}
9970
9971	/**
9972	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9973	*/
9974	HRESULT SessionMachine::onUSBDeviceDetach (IN_BSTR aId,
9975	IVirtualBoxErrorInfo *aError)
9976	{
9977	LogFlowThisFunc(("\n"));
9978
9979	AutoCaller autoCaller(this);
9980
9981	/* This notification may happen after the machine object has been
9982	* uninitialized (the session was closed), so don't assert. */
9983	CheckComRCReturnRC(autoCaller.rc());
9984
9985	ComPtr<IInternalSessionControl> directControl;
9986	{
9987	AutoReadLock alock(this);
9988	directControl = mData->mSession.mDirectControl;
9989	}
9990
9991	/* fail on notifications sent after #OnSessionEnd() is called, it is
9992	* expected by the caller */
9993	if (!directControl)
9994	return E_FAIL;
9995
9996	/* No locks should be held at this point. */
9997	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9998	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9999
10000	return directControl->OnUSBDeviceDetach (aId, aError);
10001	}
10002
10003	// protected methods
10004	/////////////////////////////////////////////////////////////////////////////
10005
10006	/**
10007	* Helper method to finalize saving the state.
10008	*
10009	* @note Must be called from under this object's lock.
10010	*
10011	* @param aSuccess TRUE if the snapshot has been taken successfully
10012	*
10013	* @note Locks mParent + this objects for writing.
10014	*/
10015	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
10016	{
10017	LogFlowThisFuncEnter();
10018
10019	AutoCaller autoCaller(this);
10020	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10021
10022	/* saveSettings() needs mParent lock */
10023	AutoMultiWriteLock2 alock (mParent, this);
10024
10025	HRESULT rc = S_OK;
10026
10027	if (aSuccess)
10028	{
10029	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
10030
10031	/* save all VM settings */
10032	rc = saveSettings();
10033	}
10034	else
10035	{
10036	/* delete the saved state file (it might have been already created) */
10037	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
10038	}
10039
10040	/* remove the completed progress object */
10041	mParent->removeProgress (mSnapshotData.mProgressId);
10042
10043	/* clear out the temporary saved state data */
10044	mSnapshotData.mLastState = MachineState_Null;
10045	mSnapshotData.mProgressId.clear();
10046	mSnapshotData.mStateFilePath.setNull();
10047
10048	LogFlowThisFuncLeave();
10049	return rc;
10050	}
10051
10052	/**
10053	* Helper method to finalize taking a snapshot. Gets called to finalize the
10054	* "take snapshot" procedure.
10055	*
10056	* Expected to be called after completing all the tasks related to taking the
10057	* snapshot, either successfully or unsuccessfilly.
10058	*
10059	* @param aSuccess TRUE if the snapshot has been taken successfully.
10060	*
10061	* @note Locks this objects for writing.
10062	*/
10063	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
10064	{
10065	LogFlowThisFuncEnter();
10066
10067	AutoCaller autoCaller(this);
10068	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10069
10070	AutoWriteLock alock(this);
10071
10072	AssertReturn(!mSnapshotData.mSnapshot.isNull(), E_FAIL);
10073
10074	MultiResult rc (S_OK);
10075
10076	if (aSuccess)
10077	{
10078	/* the server progress must be completed on success */
10079	Assert (mSnapshotData.mServerProgress->completed());
10080
10081	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
10082
10083	/* memorize the first snapshot if necessary */
10084	if (!mData->mFirstSnapshot)
10085	mData->mFirstSnapshot = mData->mCurrentSnapshot;
10086
10087	int opFlags = SaveSS_AddOp \| SaveSS_CurrentId;
10088	if (!Global::IsOnline (mSnapshotData.mLastState))
10089	{
10090	/* the machine was powered off or saved when taking a snapshot, so
10091	* reset the mCurrentStateModified flag */
10092	mData->mCurrentStateModified = FALSE;
10093	opFlags \|= SaveSS_CurStateModified;
10094	}
10095
10096	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
10097	}
10098
10099	if (aSuccess && SUCCEEDED(rc))
10100	{
10101	bool online = Global::IsOnline (mSnapshotData.mLastState);
10102
10103	/* associate old hard disks with the snapshot and do locking/unlocking*/
10104	fixupHardDisks(true /* aCommit */, online);
10105
10106	/* inform callbacks */
10107	mParent->onSnapshotTaken(mData->mUuid,
10108	mSnapshotData.mSnapshot->getId());
10109	}
10110	else
10111	{
10112	/* wait for the completion of the server progress (diff VDI creation) */
10113	/// @todo (dmik) later, we will definitely want to cancel it instead
10114	// (when the cancel function is implemented)
10115	mSnapshotData.mServerProgress->WaitForCompletion (-1);
10116
10117	/* delete all differencing hard disks created (this will also attach
10118	* their parents back by rolling back mHDData) */
10119	fixupHardDisks(false /* aCommit */);
10120
10121	/* delete the saved state file (it might have been already created) */
10122	if (mSnapshotData.mSnapshot->stateFilePath())
10123	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
10124
10125	mSnapshotData.mSnapshot->uninit();
10126	}
10127
10128	/* clear out the snapshot data */
10129	mSnapshotData.mLastState = MachineState_Null;
10130	mSnapshotData.mSnapshot.setNull();
10131	mSnapshotData.mServerProgress.setNull();
10132
10133	/* uninitialize the combined progress (to remove it from the VBox collection) */
10134	if (!mSnapshotData.mCombinedProgress.isNull())
10135	{
10136	mSnapshotData.mCombinedProgress->uninit();
10137	mSnapshotData.mCombinedProgress.setNull();
10138	}
10139
10140	LogFlowThisFuncLeave();
10141	return rc;
10142	}
10143
10144	/**
10145	* Take snapshot task handler. Must be called only by
10146	* TakeSnapshotTask::handler()!
10147	*
10148	* The sole purpose of this task is to asynchronously create differencing VDIs
10149	* and copy the saved state file (when necessary). The VM process will wait for
10150	* this task to complete using the mSnapshotData.mServerProgress returned to it.
10151	*
10152	* @note Locks this object for writing.
10153	*/
10154	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask & /* aTask */)
10155	{
10156	LogFlowThisFuncEnter();
10157
10158	AutoCaller autoCaller(this);
10159
10160	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
10161	if (!autoCaller.isOk())
10162	{
10163	/* we might have been uninitialized because the session was accidentally
10164	* closed by the client, so don't assert */
10165	LogFlowThisFuncLeave();
10166	return;
10167	}
10168
10169	AutoWriteLock alock(this);
10170
10171	HRESULT rc = S_OK;
10172
10173	bool online = Global::IsOnline (mSnapshotData.mLastState);
10174
10175	LogFlowThisFunc(("Creating differencing hard disks (online=%d)...\n",
10176	online));
10177
10178	mHDData.backup();
10179
10180	/* create new differencing hard disks and attach them to this machine */
10181	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10182	mSnapshotData.mServerProgress,
10183	online);
10184
10185	if (SUCCEEDED(rc) && mSnapshotData.mLastState == MachineState_Saved)
10186	{
10187	Utf8Str stateFrom = mSSData->mStateFilePath;
10188	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
10189
10190	LogFlowThisFunc(("Copying the execution state from '%s' to '%s'...\n",
10191	stateFrom.raw(), stateTo.raw()));
10192
10193	mSnapshotData.mServerProgress->setNextOperation(Bstr(tr("Copying the execution state")),
10194	1); // weight
10195
10196	/* Leave the lock before a lengthy operation (mMachineState is
10197	* MachineState_Saving here) */
10198
10199	alock.leave();
10200
10201	/* copy the state file */
10202	int vrc = RTFileCopyEx (stateFrom, stateTo, 0, progressCallback,
10203	static_cast <Progress *> (mSnapshotData.mServerProgress));
10204
10205	alock.enter();
10206
10207	if (RT_FAILURE(vrc))
10208	rc = setError (E_FAIL,
10209	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10210	stateFrom.raw(), stateTo.raw(), vrc);
10211	}
10212
10213	/* we have to call endTakingSnapshot() ourselves if the snapshot was taken
10214	* offline because the VM process will not do it in this case
10215	*/
10216	if (!online)
10217	{
10218	LogFlowThisFunc(("Finalizing the taken snapshot (rc=%Rhrc)...\n", rc));
10219
10220	{
10221	ErrorInfoKeeper eik;
10222
10223	setMachineState (mSnapshotData.mLastState);
10224	updateMachineStateOnClient();
10225	}
10226
10227	/* finalize the progress after setting the state, for consistency */
10228	mSnapshotData.mServerProgress->notifyComplete (rc);
10229
10230	endTakingSnapshot (SUCCEEDED(rc));
10231	}
10232	else
10233	{
10234	mSnapshotData.mServerProgress->notifyComplete (rc);
10235	}
10236
10237	LogFlowThisFuncLeave();
10238	}
10239
10240	/**
10241	* Helper struct for SessionMachine::discardSnapshotHandler().
10242	*/
10243	struct HardDiskDiscardRec
10244	{
10245	HardDiskDiscardRec() : chain (NULL) {}
10246
10247	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10248	HardDisk::MergeChain *aChain = NULL)
10249	: hd (aHd), chain (aChain) {}
10250
10251	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
10252	HardDisk::MergeChain *aChain,
10253	const ComObjPtr<HardDisk> &aReplaceHd,
10254	const ComObjPtr<HardDiskAttachment> &aReplaceHda,
10255	const Guid &aSnapshotId)
10256	: hd (aHd), chain (aChain)
10257	, replaceHd (aReplaceHd), replaceHda (aReplaceHda)
10258	, snapshotId (aSnapshotId) {}
10259
10260	ComObjPtr<HardDisk> hd;
10261	HardDisk::MergeChain *chain;
10262	/* these are for the replace hard disk case: */
10263	ComObjPtr<HardDisk> replaceHd;
10264	ComObjPtr<HardDiskAttachment> replaceHda;
10265	Guid snapshotId;
10266	};
10267
10268	typedef std::list <HardDiskDiscardRec> HardDiskDiscardRecList;
10269
10270	/**
10271	* Discard snapshot task handler. Must be called only by
10272	* DiscardSnapshotTask::handler()!
10273	*
10274	* When aTask.subTask is true, the associated progress object is left
10275	* uncompleted on success. On failure, the progress is marked as completed
10276	* regardless of this parameter.
10277	*
10278	* @note Locks mParent + this + child objects for writing!
10279	*/
10280	void SessionMachine::discardSnapshotHandler(DiscardSnapshotTask &aTask)
10281	{
10282	LogFlowThisFuncEnter();
10283
10284	AutoCaller autoCaller(this);
10285
10286	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
10287	if (!autoCaller.isOk())
10288	{
10289	/* we might have been uninitialized because the session was accidentally
10290	* closed by the client, so don't assert */
10291	aTask.progress->notifyComplete (
10292	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10293	tr ("The session has been accidentally closed"));
10294
10295	LogFlowThisFuncLeave();
10296	return;
10297	}
10298
10299	/* Locking order: */
10300	AutoMultiWriteLock3 alock(this->lockHandle(),
10301	this->snapshotsTreeLockHandle(),
10302	aTask.snapshot->lockHandle());
10303
10304	ComPtr<SnapshotMachine> sm = aTask.snapshot->getSnapshotMachine();
10305	/* no need to lock the snapshot machine since it is const by definiton */
10306
10307	HRESULT rc = S_OK;
10308
10309	/* save the snapshot ID (for callbacks) */
10310	Guid snapshotId = aTask.snapshot->getId();
10311
10312	HardDiskDiscardRecList toDiscard;
10313
10314	bool settingsChanged = false;
10315
10316	try
10317	{
10318	/* first pass: */
10319	LogFlowThisFunc(("1: Checking hard disk merge prerequisites...\n"));
10320
10321	for (HDData::AttachmentList::const_iterator it = sm->mHDData->mAttachments.begin();
10322	it != sm->mHDData->mAttachments.end();
10323	++ it)
10324	{
10325	ComObjPtr<HardDiskAttachment> hda = *it;
10326	ComObjPtr<HardDisk> hd = hda->hardDisk();
10327
10328	/* HardDisk::prepareDiscard() reqiuires a write lock */
10329	AutoWriteLock hdLock(hd);
10330
10331	if (hd->type() != HardDiskType_Normal)
10332	{
10333	/* skip writethrough hard disks */
10334
10335	Assert (hd->type() == HardDiskType_Writethrough);
10336
10337	rc = aTask.progress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
10338	hd->root()->name().raw()),
10339	1); // weight
10340	CheckComRCThrowRC(rc);
10341
10342	continue;
10343	}
10344
10345	HardDisk::MergeChain *chain = NULL;
10346
10347	/* needs to be discarded (merged with the child if any), check
10348	* prerequisites */
10349	rc = hd->prepareDiscard (chain);
10350	CheckComRCThrowRC (rc);
10351
10352	if (hd->parent().isNull() && chain != NULL)
10353	{
10354	/* it's a base hard disk so it will be a backward merge of its
10355	* only child to it (prepareDiscard() does necessary checks). We
10356	* need then to update the attachment that refers to the child
10357	* to refer to the parent insead. Don't forget to detach the
10358	* child (otherwise mergeTo() called by discard() will assert
10359	* because it will be going to delete the child) */
10360
10361	/* The below assert would be nice but I don't want to move
10362	* HardDisk::MergeChain to the header just for that
10363	* Assert (!chain->isForward()); */
10364
10365	Assert(hd->children().size() == 1);
10366
10367	ComObjPtr<HardDisk> replaceHd = hd->children().front();
10368
10369	Assert (replaceHd->backRefs().front().machineId == mData->mUuid);
10370	Assert (replaceHd->backRefs().front().snapshotIds.size() <= 1);
10371
10372	Guid snapshotId;
10373	if (replaceHd->backRefs().front().snapshotIds.size() == 1)
10374	snapshotId = replaceHd->backRefs().front().snapshotIds.front();
10375
10376	HRESULT rc2 = S_OK;
10377
10378	/* adjust back references */
10379	rc2 = replaceHd->detachFrom (mData->mUuid, snapshotId);
10380	AssertComRC (rc2);
10381
10382	rc2 = hd->attachTo (mData->mUuid, snapshotId);
10383	AssertComRC (rc2);
10384
10385	/* replace the hard disk in the attachment object */
10386	HDData::AttachmentList::iterator it;
10387	if (snapshotId.isEmpty())
10388	{
10389	/* in current state */
10390	it = std::find_if (mHDData->mAttachments.begin(),
10391	mHDData->mAttachments.end(),
10392	HardDiskAttachment::RefersTo (replaceHd));
10393	AssertBreak (it != mHDData->mAttachments.end());
10394	}
10395	else
10396	{
10397	/* in snapshot */
10398	ComObjPtr<Snapshot> snapshot;
10399	rc2 = findSnapshot (snapshotId, snapshot);
10400	AssertComRC (rc2);
10401
10402	/* don't lock the snapshot; cannot be modified outside */
10403	HDData::AttachmentList &snapAtts = snapshot->getSnapshotMachine()->mHDData->mAttachments;
10404	it = std::find_if (snapAtts.begin(),
10405	snapAtts.end(),
10406	HardDiskAttachment::RefersTo (replaceHd));
10407	AssertBreak (it != snapAtts.end());
10408	}
10409
10410	AutoWriteLock attLock (*it);
10411	(it)->updateHardDisk (hd, false / aImplicit */);
10412
10413	toDiscard.push_back (HardDiskDiscardRec (hd, chain, replaceHd,
10414	*it, snapshotId));
10415	continue;
10416	}
10417
10418	toDiscard.push_back (HardDiskDiscardRec (hd, chain));
10419	}
10420
10421	/* Now we checked that we can successfully merge all normal hard disks
10422	* (unless a runtime error like end-of-disc happens). Prior to
10423	* performing the actual merge, we want to discard the snapshot itself
10424	* and remove it from the XML file to make sure that a possible merge
10425	* ruintime error will not make this snapshot inconsistent because of
10426	* the partially merged or corrupted hard disks */
10427
10428	/* second pass: */
10429	LogFlowThisFunc(("2: Discarding snapshot...\n"));
10430
10431	{
10432	ComObjPtr<Snapshot> parentSnapshot = aTask.snapshot->parent();
10433	Bstr stateFilePath = aTask.snapshot->stateFilePath();
10434
10435	/* Note that discarding the snapshot will deassociate it from the
10436	* hard disks which will allow the merge+delete operation for them*/
10437	aTask.snapshot->beginDiscard();
10438	aTask.snapshot->uninit();
10439
10440	rc = saveSnapshotSettings(parentSnapshot,
10441	SaveSS_UpdateAllOp \| SaveSS_CurrentId \| SaveSS_CurStateModified);
10442	CheckComRCThrowRC (rc);
10443
10444	/// @todo (dmik)
10445	// if we implement some warning mechanism later, we'll have
10446	// to return a warning if the state file path cannot be deleted
10447	if (stateFilePath)
10448	{
10449	aTask.progress->setNextOperation(Bstr(tr("Discarding the execution state")),
10450	1); // weight
10451
10452	RTFileDelete(Utf8Str(stateFilePath));
10453	}
10454
10455	/// @todo NEWMEDIA to provide a good level of fauilt tolerance, we
10456	/// should restore the shapshot in the snapshot tree if
10457	/// saveSnapshotSettings fails. Actually, we may call
10458	/// #saveSnapshotSettings() with a special flag that will tell it to
10459	/// skip the given snapshot as if it would have been discarded and
10460	/// only actually discard it if the save operation succeeds.
10461	}
10462
10463	/* here we come when we've irrevesibly discarded the snapshot which
10464	* means that the VM settigns (our relevant changes to mData) need to be
10465	* saved too */
10466	/// @todo NEWMEDIA maybe save everything in one operation in place of
10467	/// saveSnapshotSettings() above
10468	settingsChanged = true;
10469
10470	/* third pass: */
10471	LogFlowThisFunc(("3: Performing actual hard disk merging...\n"));
10472
10473	/* leave the locks before the potentially lengthy operation */
10474	alock.leave();
10475
10476	/// @todo NEWMEDIA turn the following errors into warnings because the
10477	/// snapshot itself has been already deleted (and interpret these
10478	/// warnings properly on the GUI side)
10479
10480	for (HardDiskDiscardRecList::iterator it = toDiscard.begin();
10481	it != toDiscard.end();)
10482	{
10483	rc = it->hd->discard (aTask.progress, it->chain);
10484	CheckComRCBreakRC (rc);
10485
10486	/* prevent from calling cancelDiscard() */
10487	it = toDiscard.erase (it);
10488	}
10489
10490	alock.enter();
10491
10492	CheckComRCThrowRC (rc);
10493	}
10494	catch (HRESULT aRC) { rc = aRC; }
10495
10496	if FAILED (rc)
10497	{
10498	HRESULT rc2 = S_OK;
10499
10500	/* un-prepare the remaining hard disks */
10501	for (HardDiskDiscardRecList::const_iterator it = toDiscard.begin();
10502	it != toDiscard.end(); ++ it)
10503	{
10504	it->hd->cancelDiscard (it->chain);
10505
10506	if (!it->replaceHd.isNull())
10507	{
10508	/* undo hard disk replacement */
10509
10510	rc2 = it->replaceHd->attachTo (mData->mUuid, it->snapshotId);
10511	AssertComRC (rc2);
10512
10513	rc2 = it->hd->detachFrom (mData->mUuid, it->snapshotId);
10514	AssertComRC (rc2);
10515
10516	AutoWriteLock attLock (it->replaceHda);
10517	it->replaceHda->updateHardDisk (it->replaceHd, false /* aImplicit */);
10518	}
10519	}
10520	}
10521
10522	if (!aTask.subTask \|\| FAILED (rc))
10523	{
10524	if (!aTask.subTask)
10525	{
10526	/* saveSettings() below needs a VirtualBox write lock and we need to
10527	* leave this object's lock to do this to follow the {parent-child}
10528	* locking rule. This is the last chance to do that while we are
10529	* still in a protective state which allows us to temporarily leave
10530	* the lock */
10531	alock.unlock();
10532	AutoWriteLock vboxLock(mParent);
10533	alock.lock();
10534
10535	/* preserve existing error info */
10536	ErrorInfoKeeper eik;
10537
10538	/* restore the machine state */
10539	setMachineState(aTask.state);
10540	updateMachineStateOnClient();
10541
10542	if (settingsChanged)
10543	saveSettings(SaveS_InformCallbacksAnyway);
10544	}
10545
10546	/* set the result (this will try to fetch current error info on failure) */
10547	aTask.progress->notifyComplete (rc);
10548	}
10549
10550	if (SUCCEEDED(rc))
10551	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
10552
10553	LogFlowThisFunc(("Done discarding snapshot (rc=%08X)\n", rc));
10554	LogFlowThisFuncLeave();
10555	}
10556
10557	/**
10558	* Discard current state task handler. Must be called only by
10559	* DiscardCurrentStateTask::handler()!
10560	*
10561	* @note Locks mParent + this object for writing.
10562	*/
10563	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
10564	{
10565	LogFlowThisFuncEnter();
10566
10567	AutoCaller autoCaller(this);
10568
10569	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
10570	if (!autoCaller.isOk())
10571	{
10572	/* we might have been uninitialized because the session was accidentally
10573	* closed by the client, so don't assert */
10574	aTask.progress->notifyComplete (
10575	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10576	tr ("The session has been accidentally closed"));
10577
10578	LogFlowThisFuncLeave();
10579	return;
10580	}
10581
10582	/* saveSettings() needs mParent lock */
10583	AutoWriteLock vboxLock (mParent);
10584
10585	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10586	* provide an AutoWriteLock argument that lets create a non-locking
10587	* instance */
10588	vboxLock.unlock();
10589
10590	AutoWriteLock alock(this);
10591
10592	/* discard all current changes to mUserData (name, OSType etc.) (note that
10593	* the machine is powered off, so there is no need to inform the direct
10594	* session) */
10595	if (isModified())
10596	rollback (false /* aNotify */);
10597
10598	HRESULT rc = S_OK;
10599
10600	bool errorInSubtask = false;
10601	bool stateRestored = false;
10602
10603	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
10604
10605	try
10606	{
10607	/* discard the saved state file if the machine was Saved prior to this
10608	* operation */
10609	if (aTask.state == MachineState_Saved)
10610	{
10611	Assert (!mSSData->mStateFilePath.isEmpty());
10612	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10613	mSSData->mStateFilePath.setNull();
10614	aTask.modifyLastState (MachineState_PoweredOff);
10615	rc = saveStateSettings (SaveSTS_StateFilePath);
10616	CheckComRCThrowRC (rc);
10617	}
10618
10619	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
10620	{
10621	/* the "discard current snapshot and state" task is in action, the
10622	* current snapshot is not the last one. Discard the current
10623	* snapshot first */
10624
10625	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10626	subTask.subTask = true;
10627	discardSnapshotHandler (subTask);
10628
10629	AutoCaller progressCaller (aTask.progress);
10630	AutoReadLock progressLock (aTask.progress);
10631	if (aTask.progress->completed())
10632	{
10633	/* the progress can be completed by a subtask only if there was
10634	* a failure */
10635	rc = aTask.progress->resultCode();
10636	Assert (FAILED (rc));
10637	errorInSubtask = true;
10638	throw rc;
10639	}
10640	}
10641
10642	RTTIMESPEC snapshotTimeStamp;
10643	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
10644
10645	{
10646	ComObjPtr<Snapshot> curSnapshot = mData->mCurrentSnapshot;
10647	AutoReadLock snapshotLock (curSnapshot);
10648
10649	/* remember the timestamp of the snapshot we're restoring from */
10650	snapshotTimeStamp = curSnapshot->getTimeStamp();
10651
10652	ComPtr<SnapshotMachine> pSnapshotMachine(curSnapshot->getSnapshotMachine());
10653
10654	/* copy all hardware data from the current snapshot */
10655	copyFrom(pSnapshotMachine);
10656
10657	LogFlowThisFunc(("Restoring hard disks from the snapshot...\n"));
10658
10659	/* restore the attachmends from the snapshot */
10660	mHDData.backup();
10661	mHDData->mAttachments =
10662	pSnapshotMachine->mHDData->mAttachments;
10663
10664	/* leave the locks before the potentially lengthy operation */
10665	snapshotLock.unlock();
10666	alock.leave();
10667
10668	rc = createImplicitDiffs(mUserData->mSnapshotFolderFull,
10669	aTask.progress,
10670	false /* aOnline */);
10671
10672	alock.enter();
10673	snapshotLock.lock();
10674
10675	CheckComRCThrowRC (rc);
10676
10677	/* Note: on success, current (old) hard disks will be
10678	* deassociated/deleted on #commit() called from #saveSettings() at
10679	* the end. On failure, newly created implicit diffs will be
10680	* deleted by #rollback() at the end. */
10681
10682	/* should not have a saved state file associated at this point */
10683	Assert (mSSData->mStateFilePath.isNull());
10684
10685	if (curSnapshot->stateFilePath())
10686	{
10687	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
10688
10689	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
10690	mUserData->mSnapshotFolderFull.raw(),
10691	RTPATH_DELIMITER, mData->mUuid.raw());
10692
10693	LogFlowThisFunc(("Copying saved state file from '%s' to '%s'...\n",
10694	snapStateFilePath.raw(), stateFilePath.raw()));
10695
10696	aTask.progress->setNextOperation(Bstr(tr("Restoring the execution state")),
10697	1); // weight
10698
10699	/* leave the lock before the potentially lengthy operation */
10700	snapshotLock.unlock();
10701	alock.leave();
10702
10703	/* copy the state file */
10704	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
10705	0, progressCallback, aTask.progress);
10706
10707	alock.enter();
10708	snapshotLock.lock();
10709
10710	if (RT_SUCCESS(vrc))
10711	{
10712	mSSData->mStateFilePath = stateFilePath;
10713	}
10714	else
10715	{
10716	throw setError (E_FAIL,
10717	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10718	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
10719	}
10720	}
10721	}
10722
10723	/* grab differencing hard disks from the old attachments that will
10724	* become unused and need to be auto-deleted */
10725
10726	std::list< ComObjPtr<HardDisk> > diffs;
10727
10728	for (HDData::AttachmentList::const_iterator
10729	it = mHDData.backedUpData()->mAttachments.begin();
10730	it != mHDData.backedUpData()->mAttachments.end(); ++ it)
10731	{
10732	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
10733
10734	/* while the hard disk is attached, the number of children or the
10735	* parent cannot change, so no lock */
10736	if (!hd->parent().isNull() && hd->children().size() == 0)
10737	diffs.push_back (hd);
10738	}
10739
10740	int saveFlags = 0;
10741
10742	if (aTask.discardCurrentSnapshot && isLastSnapshot)
10743	{
10744	/* commit changes to have unused diffs deassociated from this
10745	* machine before deletion (see below) */
10746	commit();
10747
10748	/* delete the unused diffs now (and uninit them) because discard
10749	* may fail otherwise (too many children of the hard disk to be
10750	* discarded) */
10751	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10752	it = diffs.begin(); it != diffs.end(); ++ it)
10753	{
10754	/// @todo for now, we ignore errors since we've already
10755	/// and therefore cannot fail. Later, we may want to report a
10756	/// warning through the Progress object
10757	HRESULT rc2 = (*it)->deleteStorageAndWait();
10758	if (SUCCEEDED(rc2))
10759	(*it)->uninit();
10760	}
10761
10762	/* prevent further deletion */
10763	diffs.clear();
10764
10765	/* discard the current snapshot and state task is in action, the
10766	* current snapshot is the last one. Discard the current snapshot
10767	* after discarding the current state. */
10768
10769	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10770	subTask.subTask = true;
10771	discardSnapshotHandler (subTask);
10772
10773	AutoCaller progressCaller (aTask.progress);
10774	AutoReadLock progressLock (aTask.progress);
10775	if (aTask.progress->completed())
10776	{
10777	/* the progress can be completed by a subtask only if there
10778	* was a failure */
10779	rc = aTask.progress->resultCode();
10780	Assert (FAILED (rc));
10781	errorInSubtask = true;
10782	}
10783
10784	/* we've committed already, so inform callbacks anyway to ensure
10785	* they don't miss some change */
10786	/// @todo NEWMEDIA check if we need this informCallbacks at all
10787	/// after updating discardCurrentSnapshot functionality
10788	saveFlags \|= SaveS_InformCallbacksAnyway;
10789	}
10790
10791	/* @todo saveSettings() below needs a VirtualBox write lock and we need
10792	* to leave this object's lock to do this to follow the {parent-child}
10793	* locking rule. This is the last chance to do that while we are still
10794	* in a protective state which allows us to temporarily leave the lock*/
10795	alock.unlock();
10796	vboxLock.lock();
10797	alock.lock();
10798
10799	/* we have already discarded the current state, so set the execution
10800	* state accordingly no matter of the discard snapshot result */
10801	if (mSSData->mStateFilePath)
10802	setMachineState (MachineState_Saved);
10803	else
10804	setMachineState (MachineState_PoweredOff);
10805
10806	updateMachineStateOnClient();
10807	stateRestored = true;
10808
10809	/* assign the timestamp from the snapshot */
10810	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
10811	mData->mLastStateChange = snapshotTimeStamp;
10812
10813	/* save all settings, reset the modified flag and commit. Note that we
10814	* do so even if the subtask failed (errorInSubtask=true) because we've
10815	* already committed machine data and deleted old diffs before
10816	* discarding the current snapshot so there is no way to rollback */
10817	HRESULT rc2 = saveSettings (SaveS_ResetCurStateModified \| saveFlags);
10818
10819	/// @todo NEWMEDIA return multiple errors
10820	if (errorInSubtask)
10821	throw rc;
10822
10823	rc = rc2;
10824
10825	if (SUCCEEDED(rc))
10826	{
10827	/* now, delete the unused diffs (only on success!) and uninit them*/
10828	for (std::list< ComObjPtr<HardDisk> >::const_iterator
10829	it = diffs.begin(); it != diffs.end(); ++ it)
10830	{
10831	/// @todo for now, we ignore errors since we've already
10832	/// discarded and therefore cannot fail. Later, we may want to
10833	/// report a warning through the Progress object
10834	HRESULT rc2 = (*it)->deleteStorageAndWait();
10835	if (SUCCEEDED(rc2))
10836	(*it)->uninit();
10837	}
10838	}
10839	}
10840	catch (HRESULT aRC) { rc = aRC; }
10841
10842	if (FAILED (rc))
10843	{
10844	/* preserve existing error info */
10845	ErrorInfoKeeper eik;
10846
10847	if (!errorInSubtask)
10848	{
10849	/* undo all changes on failure unless the subtask has done so */
10850	rollback (false /* aNotify */);
10851	}
10852
10853	if (!stateRestored)
10854	{
10855	/* restore the machine state */
10856	setMachineState (aTask.state);
10857	updateMachineStateOnClient();
10858	}
10859	}
10860
10861	if (!errorInSubtask)
10862	{
10863	/* set the result (this will try to fetch current error info on failure) */
10864	aTask.progress->notifyComplete (rc);
10865	}
10866
10867	if (SUCCEEDED(rc))
10868	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
10869
10870	LogFlowThisFunc(("Done discarding current state (rc=%08X)\n", rc));
10871
10872	LogFlowThisFuncLeave();
10873	}
10874
10875	/**
10876	* Locks the attached media.
10877	*
10878	* All attached hard disks are locked for writing and DVD/floppy are locked for
10879	* reading. Parents of attached hard disks (if any) are locked for reading.
10880	*
10881	* This method also performs accessibility check of all media it locks: if some
10882	* media is inaccessible, the method will return a failure and a bunch of
10883	* extended error info objects per each inaccessible medium.
10884	*
10885	* Note that this method is atomic: if it returns a success, all media are
10886	* locked as described above; on failure no media is locked at all (all
10887	* succeeded individual locks will be undone).
10888	*
10889	* This method is intended to be called when the machine is in Starting or
10890	* Restoring state and asserts otherwise.
10891	*
10892	* The locks made by this method must be undone by calling #unlockMedia() when
10893	* no more needed.
10894	*/
10895	HRESULT SessionMachine::lockMedia()
10896	{
10897	AutoCaller autoCaller(this);
10898	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10899
10900	AutoWriteLock alock(this);
10901
10902	AssertReturn(mData->mMachineState == MachineState_Starting \|\|
10903	mData->mMachineState == MachineState_Restoring, E_FAIL);
10904
10905	typedef std::list <ComPtr<IMedium> > MediaList;
10906	MediaList mediaToCheck;
10907	MediaState_T mediaState;
10908
10909	try
10910	{
10911	HRESULT rc = S_OK;
10912
10913	/* lock hard disks */
10914	for (HDData::AttachmentList::const_iterator it =
10915	mHDData->mAttachments.begin();
10916	it != mHDData->mAttachments.end(); ++ it)
10917	{
10918	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
10919
10920	bool first = true;
10921
10922	/** @todo split out the media locking, and put it into
10923	* HardDiskImpl.cpp, as it needs this functionality too. */
10924	while (!hd.isNull())
10925	{
10926	if (first)
10927	{
10928	rc = hd->LockWrite (&mediaState);
10929	CheckComRCThrowRC (rc);
10930
10931	mData->mSession.mLockedMedia.push_back (
10932	Data::Session::LockedMedia::value_type (
10933	ComPtr<IHardDisk> (hd), true));
10934
10935	first = false;
10936	}
10937	else
10938	{
10939	rc = hd->LockRead (&mediaState);
10940	CheckComRCThrowRC (rc);
10941
10942	mData->mSession.mLockedMedia.push_back (
10943	Data::Session::LockedMedia::value_type (
10944	ComPtr<IHardDisk> (hd), false));
10945	}
10946
10947	if (mediaState == MediaState_Inaccessible)
10948	mediaToCheck.push_back (ComPtr<IHardDisk> (hd));
10949
10950	/* no locks or callers here since there should be no way to
10951	* change the hard disk parent at this point (as it is still
10952	* attached to the machine) */
10953	hd = hd->parent();
10954	}
10955	}
10956
10957	/* lock the DVD image for reading if mounted */
10958	{
10959	AutoReadLock driveLock (mDVDDrive);
10960	if (mDVDDrive->data()->state == DriveState_ImageMounted)
10961	{
10962	ComObjPtr<DVDImage> image = mDVDDrive->data()->image;
10963
10964	rc = image->LockRead (&mediaState);
10965	CheckComRCThrowRC (rc);
10966
10967	mData->mSession.mLockedMedia.push_back (
10968	Data::Session::LockedMedia::value_type (
10969	ComPtr<IDVDImage> (image), false));
10970
10971	if (mediaState == MediaState_Inaccessible)
10972	mediaToCheck.push_back (ComPtr<IDVDImage> (image));
10973	}
10974	}
10975
10976	/* lock the floppy image for reading if mounted */
10977	{
10978	AutoReadLock driveLock (mFloppyDrive);
10979	if (mFloppyDrive->data()->state == DriveState_ImageMounted)
10980	{
10981	ComObjPtr<FloppyImage> image = mFloppyDrive->data()->image;
10982
10983	rc = image->LockRead (&mediaState);
10984	CheckComRCThrowRC (rc);
10985
10986	mData->mSession.mLockedMedia.push_back (
10987	Data::Session::LockedMedia::value_type (
10988	ComPtr<IFloppyImage> (image), false));
10989
10990	if (mediaState == MediaState_Inaccessible)
10991	mediaToCheck.push_back (ComPtr<IFloppyImage> (image));
10992	}
10993	}
10994
10995	/* SUCCEEDED locking all media, now check accessibility */
10996
10997	ErrorInfoKeeper eik (true /* aIsNull */);
10998	MultiResult mrc (S_OK);
10999
11000	/* perform a check of inaccessible media deferred above */
11001	for (MediaList::const_iterator
11002	it = mediaToCheck.begin();
11003	it != mediaToCheck.end(); ++ it)
11004	{
11005	MediaState_T mediaState;
11006	rc = (*it)->COMGETTER(State) (&mediaState);
11007	CheckComRCThrowRC (rc);
11008
11009	Assert (mediaState == MediaState_LockedRead \|\|
11010	mediaState == MediaState_LockedWrite);
11011
11012	/* Note that we locked the medium already, so use the error
11013	* value to see if there was an accessibility failure */
11014
11015	Bstr error;
11016	rc = (*it)->COMGETTER(LastAccessError) (error.asOutParam());
11017	CheckComRCThrowRC (rc);
11018
11019	if (!error.isEmpty())
11020	{
11021	Bstr loc;
11022	rc = (*it)->COMGETTER(Location) (loc.asOutParam());
11023	CheckComRCThrowRC (rc);
11024
11025	/* collect multiple errors */
11026	eik.restore();
11027
11028	/* be in sync with MediumBase::setStateError() */
11029	Assert (!error.isEmpty());
11030	mrc = setError (E_FAIL,
11031	tr ("Medium '%ls' is not accessible. %ls"),
11032	loc.raw(), error.raw());
11033
11034	eik.fetch();
11035	}
11036	}
11037
11038	eik.restore();
11039	CheckComRCThrowRC ((HRESULT) mrc);
11040	}
11041	catch (HRESULT aRC)
11042	{
11043	/* Unlock all locked media on failure */
11044	unlockMedia();
11045	return aRC;
11046	}
11047
11048	return S_OK;
11049	}
11050
11051	/**
11052	* Undoes the locks made by by #lockMedia().
11053	*/
11054	void SessionMachine::unlockMedia()
11055	{
11056	AutoCaller autoCaller(this);
11057	AssertComRCReturnVoid (autoCaller.rc());
11058
11059	AutoWriteLock alock(this);
11060
11061	/* we may be holding important error info on the current thread;
11062	* preserve it */
11063	ErrorInfoKeeper eik;
11064
11065	HRESULT rc = S_OK;
11066
11067	for (Data::Session::LockedMedia::const_iterator
11068	it = mData->mSession.mLockedMedia.begin();
11069	it != mData->mSession.mLockedMedia.end(); ++ it)
11070	{
11071	MediaState_T state;
11072	if (it->second)
11073	rc = it->first->UnlockWrite (&state);
11074	else
11075	rc = it->first->UnlockRead (&state);
11076
11077	/* The second can happen if an object was re-locked in
11078	* Machine::fixupHardDisks(). The last can happen when e.g a DVD/Floppy
11079	* image was unmounted at runtime. */
11080	Assert (SUCCEEDED(rc) \|\| state == MediaState_LockedRead \|\| state == MediaState_Created);
11081	}
11082
11083	mData->mSession.mLockedMedia.clear();
11084	}
11085
11086	/**
11087	* Helper to change the machine state (reimplementation).
11088	*
11089	* @note Locks this object for writing.
11090	*/
11091	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
11092	{
11093	LogFlowThisFuncEnter();
11094	LogFlowThisFunc(("aMachineState=%d\n", aMachineState));
11095
11096	AutoCaller autoCaller(this);
11097	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11098
11099	AutoWriteLock alock(this);
11100
11101	MachineState_T oldMachineState = mData->mMachineState;
11102
11103	AssertMsgReturn (oldMachineState != aMachineState,
11104	("oldMachineState=%d, aMachineState=%d\n",
11105	oldMachineState, aMachineState), E_FAIL);
11106
11107	HRESULT rc = S_OK;
11108
11109	int stsFlags = 0;
11110	bool deleteSavedState = false;
11111
11112	/* detect some state transitions */
11113
11114	if ((oldMachineState == MachineState_Saved &&
11115	aMachineState == MachineState_Restoring) \|\|
11116	(oldMachineState < MachineState_Running /* any other OFF state */ &&
11117	aMachineState == MachineState_Starting))
11118	{
11119	/* The EMT thread is about to start */
11120
11121	/* Nothing to do here for now... */
11122
11123	/// @todo NEWMEDIA don't let mDVDDrive and other children
11124	/// change anything when in the Starting/Restoring state
11125	}
11126	else
11127	if (oldMachineState >= MachineState_Running &&
11128	oldMachineState != MachineState_Discarding &&
11129	oldMachineState != MachineState_SettingUp &&
11130	aMachineState < MachineState_Running &&
11131	/* ignore PoweredOff->Saving->PoweredOff transition when taking a
11132	* snapshot */
11133	(mSnapshotData.mSnapshot.isNull() \|\|
11134	mSnapshotData.mLastState >= MachineState_Running))
11135	{
11136	/* The EMT thread has just stopped, unlock attached media. Note that as
11137	* opposed to locking that is done from Console, we do unlocking here
11138	* because the VM process may have aborted before having a chance to
11139	* properly unlock all media it locked. */
11140
11141	unlockMedia();
11142	}
11143
11144	if (oldMachineState == MachineState_Restoring)
11145	{
11146	if (aMachineState != MachineState_Saved)
11147	{
11148	/*
11149	* delete the saved state file once the machine has finished
11150	* restoring from it (note that Console sets the state from
11151	* Restoring to Saved if the VM couldn't restore successfully,
11152	* to give the user an ability to fix an error and retry --
11153	* we keep the saved state file in this case)
11154	*/
11155	deleteSavedState = true;
11156	}
11157	}
11158	else
11159	if (oldMachineState == MachineState_Saved &&
11160	(aMachineState == MachineState_PoweredOff \|\|
11161	aMachineState == MachineState_Aborted))
11162	{
11163	/*
11164	* delete the saved state after Console::DiscardSavedState() is called
11165	* or if the VM process (owning a direct VM session) crashed while the
11166	* VM was Saved
11167	*/
11168
11169	/// @todo (dmik)
11170	// Not sure that deleting the saved state file just because of the
11171	// client death before it attempted to restore the VM is a good
11172	// thing. But when it crashes we need to go to the Aborted state
11173	// which cannot have the saved state file associated... The only
11174	// way to fix this is to make the Aborted condition not a VM state
11175	// but a bool flag: i.e., when a crash occurs, set it to true and
11176	// change the state to PoweredOff or Saved depending on the
11177	// saved state presence.
11178
11179	deleteSavedState = true;
11180	mData->mCurrentStateModified = TRUE;
11181	stsFlags \|= SaveSTS_CurStateModified;
11182	}
11183
11184	if (aMachineState == MachineState_Starting \|\|
11185	aMachineState == MachineState_Restoring)
11186	{
11187	/* set the current state modified flag to indicate that the current
11188	* state is no more identical to the state in the
11189	* current snapshot */
11190	if (!mData->mCurrentSnapshot.isNull())
11191	{
11192	mData->mCurrentStateModified = TRUE;
11193	stsFlags \|= SaveSTS_CurStateModified;
11194	}
11195	}
11196
11197	if (deleteSavedState)
11198	{
11199	if (mRemoveSavedState)
11200	{
11201	Assert (!mSSData->mStateFilePath.isEmpty());
11202	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
11203	}
11204	mSSData->mStateFilePath.setNull();
11205	stsFlags \|= SaveSTS_StateFilePath;
11206	}
11207
11208	/* redirect to the underlying peer machine */
11209	mPeer->setMachineState (aMachineState);
11210
11211	if (aMachineState == MachineState_PoweredOff \|\|
11212	aMachineState == MachineState_Aborted \|\|
11213	aMachineState == MachineState_Saved)
11214	{
11215	/* the machine has stopped execution
11216	* (or the saved state file was adopted) */
11217	stsFlags \|= SaveSTS_StateTimeStamp;
11218	}
11219
11220	if ((oldMachineState == MachineState_PoweredOff \|\|
11221	oldMachineState == MachineState_Aborted) &&
11222	aMachineState == MachineState_Saved)
11223	{
11224	/* the saved state file was adopted */
11225	Assert (!mSSData->mStateFilePath.isNull());
11226	stsFlags \|= SaveSTS_StateFilePath;
11227	}
11228
11229	rc = saveStateSettings (stsFlags);
11230
11231	if ((oldMachineState != MachineState_PoweredOff &&
11232	oldMachineState != MachineState_Aborted) &&
11233	(aMachineState == MachineState_PoweredOff \|\|
11234	aMachineState == MachineState_Aborted))
11235	{
11236	/* we've been shut down for any reason */
11237	/* no special action so far */
11238	}
11239
11240	LogFlowThisFunc(("rc=%08X\n", rc));
11241	LogFlowThisFuncLeave();
11242	return rc;
11243	}
11244
11245	/**
11246	* Sends the current machine state value to the VM process.
11247	*
11248	* @note Locks this object for reading, then calls a client process.
11249	*/
11250	HRESULT SessionMachine::updateMachineStateOnClient()
11251	{
11252	AutoCaller autoCaller(this);
11253	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
11254
11255	ComPtr<IInternalSessionControl> directControl;
11256	{
11257	AutoReadLock alock(this);
11258	AssertReturn(!!mData, E_FAIL);
11259	directControl = mData->mSession.mDirectControl;
11260
11261	/* directControl may be already set to NULL here in #OnSessionEnd()
11262	* called too early by the direct session process while there is still
11263	* some operation (like discarding the snapshot) in progress. The client
11264	* process in this case is waiting inside Session::close() for the
11265	* "end session" process object to complete, while #uninit() called by
11266	* #checkForDeath() on the Watcher thread is waiting for the pending
11267	* operation to complete. For now, we accept this inconsitent behavior
11268	* and simply do nothing here. */
11269
11270	if (mData->mSession.mState == SessionState_Closing)
11271	return S_OK;
11272
11273	AssertReturn(!directControl.isNull(), E_FAIL);
11274	}
11275
11276	return directControl->UpdateMachineState (mData->mMachineState);
11277	}
11278
11279	/* static */
11280	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD /* thread /, void pvUser)
11281	{
11282	AssertReturn(pvUser, VERR_INVALID_POINTER);
11283
11284	Task task = static_cast <Task > (pvUser);
11285	task->handler();
11286
11287	// it's our responsibility to delete the task
11288	delete task;
11289
11290	return 0;
11291	}
11292
11293	/////////////////////////////////////////////////////////////////////////////
11294	// SnapshotMachine class
11295	/////////////////////////////////////////////////////////////////////////////
11296
11297	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
11298
11299	HRESULT SnapshotMachine::FinalConstruct()
11300	{
11301	LogFlowThisFunc(("\n"));
11302
11303	/* set the proper type to indicate we're the SnapshotMachine instance */
11304	unconst(mType) = IsSnapshotMachine;
11305
11306	return S_OK;
11307	}
11308
11309	void SnapshotMachine::FinalRelease()
11310	{
11311	LogFlowThisFunc(("\n"));
11312
11313	uninit();
11314	}
11315
11316	/**
11317	* Initializes the SnapshotMachine object when taking a snapshot.
11318	*
11319	* @param aSessionMachine machine to take a snapshot from
11320	* @param aSnapshotId snapshot ID of this snapshot machine
11321	* @param aStateFilePath file where the execution state will be later saved
11322	* (or NULL for the offline snapshot)
11323	*
11324	* @note The aSessionMachine must be locked for writing.
11325	*/
11326	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
11327	IN_GUID aSnapshotId,
11328	IN_BSTR aStateFilePath)
11329	{
11330	LogFlowThisFuncEnter();
11331	LogFlowThisFunc(("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
11332
11333	AssertReturn(aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
11334
11335	/* Enclose the state transition NotReady->InInit->Ready */
11336	AutoInitSpan autoInitSpan(this);
11337	AssertReturn(autoInitSpan.isOk(), E_FAIL);
11338
11339	AssertReturn(aSessionMachine->isWriteLockOnCurrentThread(), E_FAIL);
11340
11341	mSnapshotId = aSnapshotId;
11342
11343	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
11344	unconst(mPeer) = aSessionMachine->mPeer;
11345	/* share the parent pointer */
11346	unconst(mParent) = mPeer->mParent;
11347
11348	/* take the pointer to Data to share */
11349	mData.share (mPeer->mData);
11350
11351	/* take the pointer to UserData to share (our UserData must always be the
11352	* same as Machine's data) */
11353	mUserData.share (mPeer->mUserData);
11354	/* make a private copy of all other data (recent changes from SessionMachine) */
11355	mHWData.attachCopy (aSessionMachine->mHWData);
11356	mHDData.attachCopy (aSessionMachine->mHDData);
11357
11358	/* SSData is always unique for SnapshotMachine */
11359	mSSData.allocate();
11360	mSSData->mStateFilePath = aStateFilePath;
11361
11362	HRESULT rc = S_OK;
11363
11364	/* create copies of all shared folders (mHWData after attiching a copy
11365	* contains just references to original objects) */
11366	for (HWData::SharedFolderList::iterator
11367	it = mHWData->mSharedFolders.begin();
11368	it != mHWData->mSharedFolders.end();
11369	++ it)
11370	{
11371	ComObjPtr<SharedFolder> folder;
11372	folder.createObject();
11373	rc = folder->initCopy (this, *it);
11374	CheckComRCReturnRC(rc);
11375	*it = folder;
11376	}
11377
11378	/* associate hard disks with the snapshot
11379	* (Machine::uninitDataAndChildObjects() will deassociate at destruction) */
11380	for (HDData::AttachmentList::const_iterator
11381	it = mHDData->mAttachments.begin();
11382	it != mHDData->mAttachments.end();
11383	++ it)
11384	{
11385	rc = (*it)->hardDisk()->attachTo (mData->mUuid, mSnapshotId);
11386	AssertComRC (rc);
11387	}
11388
11389	/* create copies of all storage controllers (mStorageControllerData
11390	* after attaching a copy contains just references to original objects) */
11391	mStorageControllers.allocate();
11392	for (StorageControllerList::const_iterator
11393	it = aSessionMachine->mStorageControllers->begin();
11394	it != aSessionMachine->mStorageControllers->end();
11395	++ it)
11396	{
11397	ComObjPtr<StorageController> ctrl;
11398	ctrl.createObject();
11399	ctrl->initCopy (this, *it);
11400	mStorageControllers->push_back(ctrl);
11401	}
11402
11403	/* create all other child objects that will be immutable private copies */
11404
11405	unconst(mBIOSSettings).createObject();
11406	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
11407
11408	#ifdef VBOX_WITH_VRDP
11409	unconst(mVRDPServer).createObject();
11410	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
11411	#endif
11412
11413	unconst(mDVDDrive).createObject();
11414	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
11415
11416	unconst(mFloppyDrive).createObject();
11417	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
11418
11419	unconst(mAudioAdapter).createObject();
11420	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
11421
11422	unconst(mUSBController).createObject();
11423	mUSBController->initCopy (this, mPeer->mUSBController);
11424
11425	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11426	{
11427	unconst(mNetworkAdapters [slot]).createObject();
11428	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
11429	}
11430
11431	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11432	{
11433	unconst(mSerialPorts [slot]).createObject();
11434	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
11435	}
11436
11437	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11438	{
11439	unconst(mParallelPorts [slot]).createObject();
11440	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
11441	}
11442
11443	/* Confirm a successful initialization when it's the case */
11444	autoInitSpan.setSucceeded();
11445
11446	LogFlowThisFuncLeave();
11447	return S_OK;
11448	}
11449
11450	/**
11451	* Initializes the SnapshotMachine object when loading from the settings file.
11452	*
11453	* @param aMachine machine the snapshot belngs to
11454	* @param aHWNode <Hardware> node
11455	* @param aHDAsNode <HardDiskAttachments> node
11456	* @param aSnapshotId snapshot ID of this snapshot machine
11457	* @param aStateFilePath file where the execution state is saved
11458	* (or NULL for the offline snapshot)
11459	*
11460	* @note Doesn't lock anything.
11461	*/
11462	HRESULT SnapshotMachine::init (Machine *aMachine,
11463	const settings::Key &aHWNode,
11464	const settings::Key &aHDAsNode,
11465	IN_GUID aSnapshotId, IN_BSTR aStateFilePath)
11466	{
11467	LogFlowThisFuncEnter();
11468	LogFlowThisFunc(("mName={%ls}\n", aMachine->mUserData->mName.raw()));
11469
11470	AssertReturn(aMachine && !aHWNode.isNull() && !aHDAsNode.isNull() &&
11471	!Guid (aSnapshotId).isEmpty(),
11472	E_INVALIDARG);
11473
11474	/* Enclose the state transition NotReady->InInit->Ready */
11475	AutoInitSpan autoInitSpan(this);
11476	AssertReturn(autoInitSpan.isOk(), E_FAIL);
11477
11478	/* Don't need to lock aMachine when VirtualBox is starting up */
11479
11480	mSnapshotId = aSnapshotId;
11481
11482	/* memorize the primary Machine instance */
11483	unconst(mPeer) = aMachine;
11484	/* share the parent pointer */
11485	unconst(mParent) = mPeer->mParent;
11486
11487	/* take the pointer to Data to share */
11488	mData.share (mPeer->mData);
11489	/*
11490	* take the pointer to UserData to share
11491	* (our UserData must always be the same as Machine's data)
11492	*/
11493	mUserData.share (mPeer->mUserData);
11494	/* allocate private copies of all other data (will be loaded from settings) */
11495	mHWData.allocate();
11496	mHDData.allocate();
11497	mStorageControllers.allocate();
11498
11499	/* SSData is always unique for SnapshotMachine */
11500	mSSData.allocate();
11501	mSSData->mStateFilePath = aStateFilePath;
11502
11503	/* create all other child objects that will be immutable private copies */
11504
11505	unconst(mBIOSSettings).createObject();
11506	mBIOSSettings->init (this);
11507
11508	#ifdef VBOX_WITH_VRDP
11509	unconst(mVRDPServer).createObject();
11510	mVRDPServer->init (this);
11511	#endif
11512
11513	unconst(mDVDDrive).createObject();
11514	mDVDDrive->init (this);
11515
11516	unconst(mFloppyDrive).createObject();
11517	mFloppyDrive->init (this);
11518
11519	unconst(mAudioAdapter).createObject();
11520	mAudioAdapter->init (this);
11521
11522	unconst(mUSBController).createObject();
11523	mUSBController->init (this);
11524
11525	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
11526	{
11527	unconst(mNetworkAdapters [slot]).createObject();
11528	mNetworkAdapters [slot]->init (this, slot);
11529	}
11530
11531	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
11532	{
11533	unconst(mSerialPorts [slot]).createObject();
11534	mSerialPorts [slot]->init (this, slot);
11535	}
11536
11537	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
11538	{
11539	unconst(mParallelPorts [slot]).createObject();
11540	mParallelPorts [slot]->init (this, slot);
11541	}
11542
11543	/* load hardware and harddisk settings */
11544
11545	HRESULT rc = loadHardware (aHWNode);
11546	if (SUCCEEDED(rc))
11547	rc = loadStorageControllers (aHDAsNode, true /* aRegistered */, &mSnapshotId);
11548
11549	if (SUCCEEDED(rc))
11550	{
11551	/* commit all changes made during the initialization */
11552	commit();
11553	}
11554
11555	/* Confirm a successful initialization when it's the case */
11556	if (SUCCEEDED(rc))
11557	autoInitSpan.setSucceeded();
11558
11559	LogFlowThisFuncLeave();
11560	return rc;
11561	}
11562
11563	/**
11564	* Uninitializes this SnapshotMachine object.
11565	*/
11566	void SnapshotMachine::uninit()
11567	{
11568	LogFlowThisFuncEnter();
11569
11570	/* Enclose the state transition Ready->InUninit->NotReady */
11571	AutoUninitSpan autoUninitSpan(this);
11572	if (autoUninitSpan.uninitDone())
11573	return;
11574
11575	uninitDataAndChildObjects();
11576
11577	/* free the essential data structure last */
11578	mData.free();
11579
11580	unconst(mParent).setNull();
11581	unconst(mPeer).setNull();
11582
11583	LogFlowThisFuncLeave();
11584	}
11585
11586	// util::Lockable interface
11587	////////////////////////////////////////////////////////////////////////////////
11588
11589	/**
11590	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
11591	* with the primary Machine instance (mPeer).
11592	*/
11593	RWLockHandle *SnapshotMachine::lockHandle() const
11594	{
11595	AssertReturn(!mPeer.isNull(), NULL);
11596	return mPeer->lockHandle();
11597	}
11598
11599	// public methods only for internal purposes
11600	////////////////////////////////////////////////////////////////////////////////
11601
11602	/**
11603	* Called by the snapshot object associated with this SnapshotMachine when
11604	* snapshot data such as name or description is changed.
11605	*
11606	* @note Locks this object for writing.
11607	*/
11608	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
11609	{
11610	AutoWriteLock alock(this);
11611
11612	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
11613
11614	/* inform callbacks */
11615	mParent->onSnapshotChange(mData->mUuid, aSnapshot->getId());
11616
11617	return S_OK;
11618	}
11619	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 22142

Download in other formats: