MachineImpl.cpp@ 22443

Last change on this file since 22443 was 22318, checked in by vboxsync, 15 years ago
handle required settings upgrade transparently in the settings backend only
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1	/* $Id: MachineImpl.cpp 22318 2009-08-18 10:56:49Z 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 "SharedFolderImpl.h"
46	#include "GuestOSTypeImpl.h"
47	#include "VirtualBoxErrorInfoImpl.h"
48	#include "GuestImpl.h"
49	#include "StorageControllerImpl.h"
50
51	#ifdef VBOX_WITH_USB
52	# include "USBProxyService.h"
53	#endif
54
55	#include "VirtualBoxXMLUtil.h"
56
57	#include "Logging.h"
58	#include "Performance.h"
59
60	#include <stdio.h>
61	#include <stdlib.h>
62
63	#include <iprt/path.h>
64	#include <iprt/dir.h>
65	#include <iprt/asm.h>
66	#include <iprt/process.h>
67	#include <iprt/cpputils.h>
68	#include <iprt/env.h>
69	#include <iprt/string.h>
70
71	#include <VBox/com/array.h>
72
73	#include <VBox/err.h>
74	#include <VBox/param.h>
75	#include <VBox/settings.h>
76
77	#ifdef VBOX_WITH_GUEST_PROPS
78	# include <VBox/HostServices/GuestPropertySvc.h>
79	# include <VBox/com/array.h>
80	#endif
81
82	#include <algorithm>
83
84	#include <typeinfo>
85
86	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
87	#define HOSTSUFF_EXE ".exe"
88	#else /* !RT_OS_WINDOWS */
89	#define HOSTSUFF_EXE ""
90	#endif /* !RT_OS_WINDOWS */
91
92	// defines / prototypes
93	/////////////////////////////////////////////////////////////////////////////
94
95	// globals
96	/////////////////////////////////////////////////////////////////////////////
97
98	/**
99	* Progress callback handler for lengthy operations
100	* (corresponds to the FNRTPROGRESS typedef).
101	*
102	* @param uPercentage Completetion precentage (0-100).
103	* @param pvUser Pointer to the Progress instance.
104	*/
105	static DECLCALLBACK(int) progressCallback (unsigned uPercentage, void *pvUser)
106	{
107	Progress progress = static_cast<Progress>(pvUser);
108
109	/* update the progress object */
110	if (progress)
111	progress->setCurrentOperationProgress(uPercentage);
112
113	return VINF_SUCCESS;
114	}
115
116	/////////////////////////////////////////////////////////////////////////////
117	// Machine::Data structure
118	/////////////////////////////////////////////////////////////////////////////
119
120	Machine::Data::Data()
121	{
122	mRegistered = FALSE;
123	mAccessible = FALSE;
124	/* mUuid is initialized in Machine::init() */
125
126	mMachineState = MachineState_PoweredOff;
127	RTTimeNow (&mLastStateChange);
128
129	mMachineStateDeps = 0;
130	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
131	mMachineStateChangePending = 0;
132
133	mCurrentStateModified = TRUE;
134	mHandleCfgFile = NIL_RTFILE;
135
136	mSession.mPid = NIL_RTPROCESS;
137	mSession.mState = SessionState_Closed;
138	}
139
140	Machine::Data::~Data()
141	{
142	if (mMachineStateDepsSem != NIL_RTSEMEVENTMULTI)
143	{
144	RTSemEventMultiDestroy (mMachineStateDepsSem);
145	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
146	}
147	}
148
149	/////////////////////////////////////////////////////////////////////////////
150	// Machine::UserData structure
151	/////////////////////////////////////////////////////////////////////////////
152
153	Machine::UserData::UserData()
154	{
155	/* default values for a newly created machine */
156
157	mNameSync = TRUE;
158
159	/* mName, mOSTypeId, mSnapshotFolder, mSnapshotFolderFull are initialized in
160	* Machine::init() */
161	}
162
163	Machine::UserData::~UserData()
164	{
165	}
166
167	/////////////////////////////////////////////////////////////////////////////
168	// Machine::HWData structure
169	/////////////////////////////////////////////////////////////////////////////
170
171	Machine::HWData::HWData()
172	{
173	/* default values for a newly created machine */
174	mHWVersion = "2"; /** @todo get the default from the schema if that is possible. */
175	mMemorySize = 128;
176	mCPUCount = 1;
177	mMemoryBalloonSize = 0;
178	mStatisticsUpdateInterval = 0;
179	mVRAMSize = 8;
180	mAccelerate3DEnabled = false;
181	mAccelerate2DVideoEnabled = false;
182	mMonitorCount = 1;
183	mHWVirtExEnabled = true;
184	mHWVirtExNestedPagingEnabled = false;
185	mHWVirtExVPIDEnabled = false;
186	mPAEEnabled = false;
187	mPropertyServiceActive = false;
188
189	/* default boot order: floppy - DVD - HDD */
190	mBootOrder [0] = DeviceType_Floppy;
191	mBootOrder [1] = DeviceType_DVD;
192	mBootOrder [2] = DeviceType_HardDisk;
193	for (size_t i = 3; i < RT_ELEMENTS (mBootOrder); i++)
194	mBootOrder [i] = DeviceType_Null;
195
196	mClipboardMode = ClipboardMode_Bidirectional;
197	mGuestPropertyNotificationPatterns = "";
198	}
199
200	Machine::HWData::~HWData()
201	{
202	}
203
204	bool Machine::HWData::operator== (const HWData &that) const
205	{
206	if (this == &that)
207	return true;
208
209	if (mHWVersion != that.mHWVersion \|\|
210	mMemorySize != that.mMemorySize \|\|
211	mMemoryBalloonSize != that.mMemoryBalloonSize \|\|
212	mStatisticsUpdateInterval != that.mStatisticsUpdateInterval \|\|
213	mVRAMSize != that.mVRAMSize \|\|
214	mAccelerate3DEnabled != that.mAccelerate3DEnabled \|\|
215	mAccelerate2DVideoEnabled != that.mAccelerate2DVideoEnabled \|\|
216	mMonitorCount != that.mMonitorCount \|\|
217	mHWVirtExEnabled != that.mHWVirtExEnabled \|\|
218	mHWVirtExNestedPagingEnabled != that.mHWVirtExNestedPagingEnabled \|\|
219	mHWVirtExVPIDEnabled != that.mHWVirtExVPIDEnabled \|\|
220	mPAEEnabled != that.mPAEEnabled \|\|
221	mCPUCount != that.mCPUCount \|\|
222	mClipboardMode != that.mClipboardMode)
223	return false;
224
225	for (size_t i = 0; i < RT_ELEMENTS (mBootOrder); ++ i)
226	if (mBootOrder [i] != that.mBootOrder [i])
227	return false;
228
229	if (mSharedFolders.size() != that.mSharedFolders.size())
230	return false;
231
232	if (mSharedFolders.size() == 0)
233	return true;
234
235	/* Make copies to speed up comparison */
236	SharedFolderList folders = mSharedFolders;
237	SharedFolderList thatFolders = that.mSharedFolders;
238
239	SharedFolderList::iterator it = folders.begin();
240	while (it != folders.end())
241	{
242	bool found = false;
243	SharedFolderList::iterator thatIt = thatFolders.begin();
244	while (thatIt != thatFolders.end())
245	{
246	if ( (it)->name() == (thatIt)->name()
247	&& RTPathCompare(Utf8Str((*it)->hostPath()).c_str(),
248	Utf8Str((*thatIt)->hostPath()).c_str()
249	) == 0)
250	{
251	thatFolders.erase (thatIt);
252	found = true;
253	break;
254	}
255	else
256	++ thatIt;
257	}
258	if (found)
259	it = folders.erase (it);
260	else
261	return false;
262	}
263
264	Assert (folders.size() == 0 && thatFolders.size() == 0);
265
266	return true;
267	}
268
269	/////////////////////////////////////////////////////////////////////////////
270	// Machine::HDData structure
271	/////////////////////////////////////////////////////////////////////////////
272
273	Machine::HDData::HDData()
274	{
275	}
276
277	Machine::HDData::~HDData()
278	{
279	}
280
281	bool Machine::HDData::operator== (const HDData &that) const
282	{
283	if (this == &that)
284	return true;
285
286	if (mAttachments.size() != that.mAttachments.size())
287	return false;
288
289	if (mAttachments.size() == 0)
290	return true;
291
292	/* Make copies to speed up comparison */
293	AttachmentList atts = mAttachments;
294	AttachmentList thatAtts = that.mAttachments;
295
296	AttachmentList::iterator it = atts.begin();
297	while (it != atts.end())
298	{
299	bool found = false;
300	AttachmentList::iterator thatIt = thatAtts.begin();
301	while (thatIt != thatAtts.end())
302	{
303	if ((it)->controller() == (thatIt)->controller() &&
304	(it)->port() == (thatIt)->port() &&
305	(it)->device() == (thatIt)->device() &&
306	(it)->hardDisk().equalsTo ((thatIt)->hardDisk()))
307	{
308	thatAtts.erase (thatIt);
309	found = true;
310	break;
311	}
312	else
313	++ thatIt;
314	}
315	if (found)
316	it = atts.erase (it);
317	else
318	return false;
319	}
320
321	Assert (atts.size() == 0 && thatAtts.size() == 0);
322
323	return true;
324	}
325
326	/////////////////////////////////////////////////////////////////////////////
327	// Machine class
328	/////////////////////////////////////////////////////////////////////////////
329
330	// constructor / destructor
331	/////////////////////////////////////////////////////////////////////////////
332
333	Machine::Machine() : mType (IsMachine) {}
334
335	Machine::~Machine() {}
336
337	HRESULT Machine::FinalConstruct()
338	{
339	LogFlowThisFunc(("\n"));
340	return S_OK;
341	}
342
343	void Machine::FinalRelease()
344	{
345	LogFlowThisFunc(("\n"));
346	uninit();
347	}
348
349	/**
350	* Initializes the instance.
351	*
352	* @param aParent Associated parent object
353	* @param aConfigFile Local file system path to the VM settings file (can
354	* be relative to the VirtualBox config directory).
355	* @param aMode Init_New, Init_Existing or Init_Registered
356	* @param aName name for the machine when aMode is Init_New
357	* (ignored otherwise)
358	* @param aOsType OS Type of this machine
359	* @param aNameSync \|TRUE\| to automatically sync settings dir and file
360	* name with the machine name. \|FALSE\| is used for legacy
361	* machines where the file name is specified by the
362	* user and should never change. Used only in Init_New
363	* mode (ignored otherwise).
364	* @param aId UUID of the machine. Required for aMode==Init_Registered
365	* and optional for aMode==Init_New. Used for consistency
366	* check when aMode is Init_Registered; must match UUID
367	* stored in the settings file. Used for predefining the
368	* UUID of a VM when aMode is Init_New.
369	*
370	* @return Success indicator. if not S_OK, the machine object is invalid
371	*/
372	HRESULT Machine::init(VirtualBox *aParent,
373	const Utf8Str &strConfigFile,
374	InitMode aMode,
375	CBSTR aName /* = NULL */,
376	GuestOSType aOsType / = NULL */,
377	BOOL aNameSync /* = TRUE */,
378	const Guid aId / = NULL */)
379	{
380	LogFlowThisFuncEnter();
381	LogFlowThisFunc (("aConfigFile='%s', aMode=%d\n", strConfigFile.raw(), aMode));
382
383	AssertReturn (aParent, E_INVALIDARG);
384	AssertReturn (!strConfigFile.isEmpty(), E_INVALIDARG);
385	AssertReturn(aMode != Init_New \|\| (aName != NULL && *aName != '\0'),
386	E_INVALIDARG);
387	AssertReturn(aMode != Init_Registered \|\| aId != NULL, E_FAIL);
388
389	/* Enclose the state transition NotReady->InInit->Ready */
390	AutoInitSpan autoInitSpan(this);
391	AssertReturn(autoInitSpan.isOk(), E_FAIL);
392
393	HRESULT rc = S_OK;
394
395	/* share the parent weakly */
396	unconst(mParent) = aParent;
397
398	/* register with parent early, since uninit() will unconditionally
399	* unregister on failure */
400	mParent->addDependentChild (this);
401
402	/* allocate the essential machine data structure (the rest will be
403	* allocated later by initDataAndChildObjects() */
404	mData.allocate();
405
406	mData->m_pMachineConfigFile = NULL;
407
408	/* memorize the config file name (as provided) */
409	mData->m_strConfigFile = strConfigFile;
410
411	/* get the full file name */
412	int vrc = mParent->calculateFullPath(strConfigFile, mData->m_strConfigFileFull);
413	if (RT_FAILURE(vrc))
414	return setError(VBOX_E_FILE_ERROR,
415	tr("Invalid machine settings file name '%s' (%Rrc)"),
416	strConfigFile.raw(),
417	vrc);
418
419	if (aMode == Init_Registered)
420	{
421	mData->mRegistered = TRUE;
422
423	/* store the supplied UUID (will be used to check for UUID consistency
424	* in loadSettings() */
425	unconst(mData->mUuid) = *aId;
426
427	// now load the settings from XML:
428	rc = registeredInit();
429	}
430	else
431	{
432	if (aMode == Init_Import)
433	{
434	// we're reading the settings file below
435	}
436	else if (aMode == Init_New)
437	{
438	/* check for the file existence */
439	RTFILE f = NIL_RTFILE;
440	int vrc = RTFileOpen(&f, mData->m_strConfigFileFull.c_str(), RTFILE_O_READ);
441	if ( RT_SUCCESS(vrc)
442	\|\| vrc == VERR_SHARING_VIOLATION
443	)
444	{
445	rc = setError(VBOX_E_FILE_ERROR,
446	tr("Machine settings file '%s' already exists"),
447	mData->m_strConfigFileFull.raw());
448	if (RT_SUCCESS(vrc))
449	RTFileClose(f);
450	}
451	else
452	{
453	if ( vrc != VERR_FILE_NOT_FOUND
454	&& vrc != VERR_PATH_NOT_FOUND
455	)
456	rc = setError(VBOX_E_FILE_ERROR,
457	tr("Invalid machine settings file name '%s' (%Rrc)"),
458	mData->m_strConfigFileFull.raw(),
459	vrc);
460	}
461
462	// create an empty machine config
463	mData->m_pMachineConfigFile = new settings::MachineConfigFile(NULL);
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 = initDataAndChildObjects();
572
573	if (SUCCEEDED(rc))
574	{
575	/* Temporarily reset the registered flag in order to let setters
576	* potentially called from loadSettings() succeed (isMutable() used in
577	* all setters will return FALSE for a Machine instance if mRegistered
578	* is TRUE). */
579	mData->mRegistered = FALSE;
580
581	rc = loadSettings(true /* aRegistered */);
582
583	/* Restore the registered flag (even on failure) */
584	mData->mRegistered = TRUE;
585	}
586
587	if (SUCCEEDED(rc))
588	{
589	/* Set mAccessible to TRUE only if we successfully locked and loaded
590	* the settings file */
591	mData->mAccessible = TRUE;
592
593	/* commit all changes made during loading the settings file */
594	commit();
595	}
596	else
597	{
598	/* If the machine is registered, then, instead of returning a
599	* failure, we mark it as inaccessible and set the result to
600	* success to give it a try later */
601
602	/* fetch the current error info */
603	mData->mAccessError = com::ErrorInfo();
604	LogWarning(("Machine {%RTuuid} is inaccessible! [%ls]\n",
605	mData->mUuid.raw(),
606	mData->mAccessError.getText().raw()));
607
608	/* rollback all changes */
609	rollback (false /* aNotify */);
610
611	/* uninitialize the common part to make sure all data is reset to
612	* default (null) values */
613	uninitDataAndChildObjects();
614
615	rc = S_OK;
616	}
617
618	return rc;
619	}
620
621	/**
622	* Uninitializes the instance.
623	* Called either from FinalRelease() or by the parent when it gets destroyed.
624	*
625	* @note The caller of this method must make sure that this object
626	* a) doesn't have active callers on the current thread and b) is not locked
627	* by the current thread; otherwise uninit() will hang either a) due to
628	* AutoUninitSpan waiting for a number of calls to drop to zero or b) due to
629	* a dead-lock caused by this thread waiting for all callers on the other
630	* threads are done but preventing them from doing so by holding a lock.
631	*/
632	void Machine::uninit()
633	{
634	LogFlowThisFuncEnter();
635
636	Assert (!isWriteLockOnCurrentThread());
637
638	/* Enclose the state transition Ready->InUninit->NotReady */
639	AutoUninitSpan autoUninitSpan(this);
640	if (autoUninitSpan.uninitDone())
641	return;
642
643	Assert (mType == IsMachine);
644	Assert (!!mData);
645
646	LogFlowThisFunc(("initFailed()=%d\n", autoUninitSpan.initFailed()));
647	LogFlowThisFunc(("mRegistered=%d\n", mData->mRegistered));
648
649	/* Enter this object lock because there may be a SessionMachine instance
650	* somewhere around, that shares our data and lock but doesn't use our
651	* addCaller()/removeCaller(), and it may be also accessing the same data
652	* members. mParent lock is necessary as well because of
653	* SessionMachine::uninit(), etc.
654	*/
655	AutoMultiWriteLock2 alock (mParent, this);
656
657	if (!mData->mSession.mMachine.isNull())
658	{
659	/* Theoretically, this can only happen if the VirtualBox server has been
660	* terminated while there were clients running that owned open direct
661	* sessions. Since in this case we are definitely called by
662	* VirtualBox::uninit(), we may be sure that SessionMachine::uninit()
663	* won't happen on the client watcher thread (because it does
664	* VirtualBox::addCaller() for the duration of the
665	* SessionMachine::checkForDeath() call, so that VirtualBox::uninit()
666	* cannot happen until the VirtualBox caller is released). This is
667	* important, because SessionMachine::uninit() cannot correctly operate
668	* after we return from this method (it expects the Machine instance is
669	* still valid). We'll call it ourselves below.
670	*/
671	LogWarningThisFunc(("Session machine is not NULL (%p), "
672	"the direct session is still open!\n",
673	(SessionMachine *) mData->mSession.mMachine));
674
675	if (Global::IsOnlineOrTransient (mData->mMachineState))
676	{
677	LogWarningThisFunc(("Setting state to Aborted!\n"));
678	/* set machine state using SessionMachine reimplementation */
679	static_cast <Machine *> (mData->mSession.mMachine)
680	->setMachineState (MachineState_Aborted);
681	}
682
683	/*
684	* Uninitialize SessionMachine using public uninit() to indicate
685	* an unexpected uninitialization.
686	*/
687	mData->mSession.mMachine->uninit();
688	/* SessionMachine::uninit() must set mSession.mMachine to null */
689	Assert (mData->mSession.mMachine.isNull());
690	}
691
692	/* the lock is no more necessary (SessionMachine is uninitialized) */
693	alock.leave();
694
695	if (isModified())
696	{
697	LogWarningThisFunc(("Discarding unsaved settings changes!\n"));
698	rollback (false /* aNotify */);
699	}
700
701	if (mData->mAccessible)
702	uninitDataAndChildObjects();
703
704	/* free the essential data structure last */
705	mData.free();
706
707	mParent->removeDependentChild (this);
708
709	LogFlowThisFuncLeave();
710	}
711
712	/**
713	* Helper to initialize all associated child objects and allocate data
714	* structures.
715	*
716	* This method must be called as a part of the object's initialization procedure
717	* (usually done in the #init() method).
718	*
719	* @note Must be called only from #init() or from #registeredInit().
720	*/
721	HRESULT Machine::initDataAndChildObjects()
722	{
723	AutoCaller autoCaller (this);
724	AssertComRCReturnRC (autoCaller.rc());
725	AssertComRCReturn (autoCaller.state() == InInit \|\|
726	autoCaller.state() == Limited, E_FAIL);
727
728	AssertReturn (!mData->mAccessible, E_FAIL);
729
730	/* allocate data structures */
731	mSSData.allocate();
732	mUserData.allocate();
733	mHWData.allocate();
734	mHDData.allocate();
735	mStorageControllers.allocate();
736
737	/* initialize mOSTypeId */
738	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
739
740	/* create associated BIOS settings object */
741	unconst (mBIOSSettings).createObject();
742	mBIOSSettings->init (this);
743
744	#ifdef VBOX_WITH_VRDP
745	/* create an associated VRDPServer object (default is disabled) */
746	unconst (mVRDPServer).createObject();
747	mVRDPServer->init (this);
748	#endif
749
750	/* create an associated DVD drive object */
751	unconst (mDVDDrive).createObject();
752	mDVDDrive->init (this);
753
754	/* create an associated floppy drive object */
755	unconst (mFloppyDrive).createObject();
756	mFloppyDrive->init (this);
757
758	/* create associated serial port objects */
759	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
760	{
761	unconst (mSerialPorts [slot]).createObject();
762	mSerialPorts [slot]->init (this, slot);
763	}
764
765	/* create associated parallel port objects */
766	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
767	{
768	unconst (mParallelPorts [slot]).createObject();
769	mParallelPorts [slot]->init (this, slot);
770	}
771
772	/* create the audio adapter object (always present, default is disabled) */
773	unconst (mAudioAdapter).createObject();
774	mAudioAdapter->init (this);
775
776	/* create the USB controller object (always present, default is disabled) */
777	unconst (mUSBController).createObject();
778	mUSBController->init (this);
779
780	/* create associated network adapter objects */
781	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
782	{
783	unconst (mNetworkAdapters [slot]).createObject();
784	mNetworkAdapters [slot]->init (this, slot);
785	}
786
787	return S_OK;
788	}
789
790	/**
791	* Helper to uninitialize all associated child objects and to free all data
792	* structures.
793	*
794	* This method must be called as a part of the object's uninitialization
795	* procedure (usually done in the #uninit() method).
796	*
797	* @note Must be called only from #uninit() or from #registeredInit().
798	*/
799	void Machine::uninitDataAndChildObjects()
800	{
801	AutoCaller autoCaller (this);
802	AssertComRCReturnVoid (autoCaller.rc());
803	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
804	autoCaller.state() == Limited);
805
806	/* uninit all children using addDependentChild()/removeDependentChild()
807	* in their init()/uninit() methods */
808	uninitDependentChildren();
809
810	/* tell all our other child objects we've been uninitialized */
811
812	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
813	{
814	if (mNetworkAdapters [slot])
815	{
816	mNetworkAdapters [slot]->uninit();
817	unconst (mNetworkAdapters [slot]).setNull();
818	}
819	}
820
821	if (mUSBController)
822	{
823	mUSBController->uninit();
824	unconst (mUSBController).setNull();
825	}
826
827	if (mAudioAdapter)
828	{
829	mAudioAdapter->uninit();
830	unconst (mAudioAdapter).setNull();
831	}
832
833	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
834	{
835	if (mParallelPorts [slot])
836	{
837	mParallelPorts [slot]->uninit();
838	unconst (mParallelPorts [slot]).setNull();
839	}
840	}
841
842	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
843	{
844	if (mSerialPorts [slot])
845	{
846	mSerialPorts [slot]->uninit();
847	unconst (mSerialPorts [slot]).setNull();
848	}
849	}
850
851	if (mFloppyDrive)
852	{
853	mFloppyDrive->uninit();
854	unconst (mFloppyDrive).setNull();
855	}
856
857	if (mDVDDrive)
858	{
859	mDVDDrive->uninit();
860	unconst (mDVDDrive).setNull();
861	}
862
863	#ifdef VBOX_WITH_VRDP
864	if (mVRDPServer)
865	{
866	mVRDPServer->uninit();
867	unconst (mVRDPServer).setNull();
868	}
869	#endif
870
871	if (mBIOSSettings)
872	{
873	mBIOSSettings->uninit();
874	unconst (mBIOSSettings).setNull();
875	}
876
877	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
878	* instance is uninitialized; SessionMachine instances refer to real
879	* Machine hard disks). This is necessary for a clean re-initialization of
880	* the VM after successfully re-checking the accessibility state. Note
881	* that in case of normal Machine or SnapshotMachine uninitialization (as
882	* a result of unregistering or discarding the snapshot), outdated hard
883	* disk attachments will already be uninitialized and deleted, so this
884	* code will not affect them. */
885	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
886	{
887	for (HDData::AttachmentList::const_iterator it =
888	mHDData->mAttachments.begin();
889	it != mHDData->mAttachments.end();
890	++ it)
891	{
892	HRESULT rc = (*it)->hardDisk()->detachFrom (mData->mUuid,
893	snapshotId());
894	AssertComRC(rc);
895	}
896	}
897
898	if (mType == IsMachine)
899	{
900	/* reset some important fields of mData */
901	mData->mCurrentSnapshot.setNull();
902	mData->mFirstSnapshot.setNull();
903	}
904
905	/* free data structures (the essential mData structure is not freed here
906	* since it may be still in use) */
907	mHDData.free();
908	mStorageControllers.free();
909	mHWData.free();
910	mUserData.free();
911	mSSData.free();
912	}
913
914	// IMachine properties
915	/////////////////////////////////////////////////////////////////////////////
916
917	STDMETHODIMP Machine::COMGETTER(Parent) (IVirtualBox **aParent)
918	{
919	CheckComArgOutPointerValid(aParent);
920
921	AutoLimitedCaller autoCaller(this);
922	CheckComRCReturnRC(autoCaller.rc());
923
924	/* mParent is constant during life time, no need to lock */
925	mParent.queryInterfaceTo(aParent);
926
927	return S_OK;
928	}
929
930	STDMETHODIMP Machine::COMGETTER(Accessible) (BOOL *aAccessible)
931	{
932	CheckComArgOutPointerValid(aAccessible);
933
934	AutoLimitedCaller autoCaller(this);
935	CheckComRCReturnRC(autoCaller.rc());
936
937	AutoWriteLock alock(this);
938
939	HRESULT rc = S_OK;
940
941	if (!mData->mAccessible)
942	{
943	/* try to initialize the VM once more if not accessible */
944
945	AutoReinitSpan autoReinitSpan(this);
946	AssertReturn(autoReinitSpan.isOk(), E_FAIL);
947
948	if (mData->m_pMachineConfigFile)
949	{
950	// @todo why are we parsing this several times?
951	// this is hugely inefficient
952	delete mData->m_pMachineConfigFile;
953	mData->m_pMachineConfigFile = NULL;
954	}
955
956	rc = registeredInit();
957
958	if (SUCCEEDED(rc) && mData->mAccessible)
959	{
960	autoReinitSpan.setSucceeded();
961
962	/* make sure interesting parties will notice the accessibility
963	* state change */
964	mParent->onMachineStateChange(mData->mUuid, mData->mMachineState);
965	mParent->onMachineDataChange(mData->mUuid);
966	}
967	}
968
969	if (SUCCEEDED(rc))
970	*aAccessible = mData->mAccessible;
971
972	return rc;
973	}
974
975	STDMETHODIMP Machine::COMGETTER(AccessError) (IVirtualBoxErrorInfo **aAccessError)
976	{
977	CheckComArgOutPointerValid(aAccessError);
978
979	AutoLimitedCaller autoCaller(this);
980	CheckComRCReturnRC(autoCaller.rc());
981
982	AutoReadLock alock(this);
983
984	if (mData->mAccessible \|\| !mData->mAccessError.isBasicAvailable())
985	{
986	/* return shortly */
987	aAccessError = NULL;
988	return S_OK;
989	}
990
991	HRESULT rc = S_OK;
992
993	ComObjPtr<VirtualBoxErrorInfo> errorInfo;
994	rc = errorInfo.createObject();
995	if (SUCCEEDED(rc))
996	{
997	errorInfo->init (mData->mAccessError.getResultCode(),
998	mData->mAccessError.getInterfaceID(),
999	mData->mAccessError.getComponent(),
1000	mData->mAccessError.getText());
1001	rc = errorInfo.queryInterfaceTo(aAccessError);
1002	}
1003
1004	return rc;
1005	}
1006
1007	STDMETHODIMP Machine::COMGETTER(Name) (BSTR *aName)
1008	{
1009	CheckComArgOutPointerValid(aName);
1010
1011	AutoCaller autoCaller(this);
1012	CheckComRCReturnRC(autoCaller.rc());
1013
1014	AutoReadLock alock(this);
1015
1016	mUserData->mName.cloneTo(aName);
1017
1018	return S_OK;
1019	}
1020
1021	STDMETHODIMP Machine::COMSETTER(Name) (IN_BSTR aName)
1022	{
1023	CheckComArgNotNull (aName);
1024
1025	if (!*aName)
1026	return setError(E_INVALIDARG,
1027	tr("Machine name cannot be empty"));
1028
1029	AutoCaller autoCaller(this);
1030	CheckComRCReturnRC(autoCaller.rc());
1031
1032	AutoWriteLock alock(this);
1033
1034	HRESULT rc = checkStateDependency(MutableStateDep);
1035	CheckComRCReturnRC(rc);
1036
1037	mUserData.backup();
1038	mUserData->mName = aName;
1039
1040	return S_OK;
1041	}
1042
1043	STDMETHODIMP Machine::COMGETTER(Description) (BSTR *aDescription)
1044	{
1045	CheckComArgOutPointerValid(aDescription);
1046
1047	AutoCaller autoCaller(this);
1048	CheckComRCReturnRC(autoCaller.rc());
1049
1050	AutoReadLock alock(this);
1051
1052	mUserData->mDescription.cloneTo(aDescription);
1053
1054	return S_OK;
1055	}
1056
1057	STDMETHODIMP Machine::COMSETTER(Description) (IN_BSTR aDescription)
1058	{
1059	AutoCaller autoCaller(this);
1060	CheckComRCReturnRC(autoCaller.rc());
1061
1062	AutoWriteLock alock(this);
1063
1064	HRESULT rc = checkStateDependency(MutableStateDep);
1065	CheckComRCReturnRC(rc);
1066
1067	mUserData.backup();
1068	mUserData->mDescription = aDescription;
1069
1070	return S_OK;
1071	}
1072
1073	STDMETHODIMP Machine::COMGETTER(Id) (BSTR *aId)
1074	{
1075	CheckComArgOutPointerValid(aId);
1076
1077	AutoLimitedCaller autoCaller(this);
1078	CheckComRCReturnRC(autoCaller.rc());
1079
1080	AutoReadLock alock(this);
1081
1082	mData->mUuid.toUtf16().cloneTo(aId);
1083
1084	return S_OK;
1085	}
1086
1087	STDMETHODIMP Machine::COMGETTER(OSTypeId) (BSTR *aOSTypeId)
1088	{
1089	CheckComArgOutPointerValid(aOSTypeId);
1090
1091	AutoCaller autoCaller(this);
1092	CheckComRCReturnRC(autoCaller.rc());
1093
1094	AutoReadLock alock(this);
1095
1096	mUserData->mOSTypeId.cloneTo(aOSTypeId);
1097
1098	return S_OK;
1099	}
1100
1101	STDMETHODIMP Machine::COMSETTER(OSTypeId) (IN_BSTR aOSTypeId)
1102	{
1103	CheckComArgNotNull (aOSTypeId);
1104
1105	AutoCaller autoCaller(this);
1106	CheckComRCReturnRC(autoCaller.rc());
1107
1108	/* look up the object by Id to check it is valid */
1109	ComPtr<IGuestOSType> guestOSType;
1110	HRESULT rc = mParent->GetGuestOSType (aOSTypeId,
1111	guestOSType.asOutParam());
1112	CheckComRCReturnRC(rc);
1113
1114	/* when setting, always use the "etalon" value for consistency -- lookup
1115	* by ID is case-insensitive and the input value may have different case */
1116	Bstr osTypeId;
1117	rc = guestOSType->COMGETTER(Id) (osTypeId.asOutParam());
1118	CheckComRCReturnRC(rc);
1119
1120	AutoWriteLock alock(this);
1121
1122	rc = checkStateDependency(MutableStateDep);
1123	CheckComRCReturnRC(rc);
1124
1125	mUserData.backup();
1126	mUserData->mOSTypeId = osTypeId;
1127
1128	return S_OK;
1129	}
1130
1131	STDMETHODIMP Machine::COMGETTER(HardwareVersion) (BSTR *aHWVersion)
1132	{
1133	if (!aHWVersion)
1134	return E_POINTER;
1135
1136	AutoCaller autoCaller(this);
1137	CheckComRCReturnRC(autoCaller.rc());
1138
1139	AutoReadLock alock(this);
1140
1141	mHWData->mHWVersion.cloneTo(aHWVersion);
1142
1143	return S_OK;
1144	}
1145
1146	STDMETHODIMP Machine::COMSETTER(HardwareVersion) (IN_BSTR aHWVersion)
1147	{
1148	/* check known version */
1149	Utf8Str hwVersion = aHWVersion;
1150	if ( hwVersion.compare ("1") != 0
1151	&& hwVersion.compare ("2") != 0)
1152	return setError(E_INVALIDARG,
1153	tr("Invalid hardware version: %ls\n"), aHWVersion);
1154
1155	AutoCaller autoCaller(this);
1156	CheckComRCReturnRC(autoCaller.rc());
1157
1158	AutoWriteLock alock(this);
1159
1160	HRESULT rc = checkStateDependency(MutableStateDep);
1161	CheckComRCReturnRC(rc);
1162
1163	mHWData.backup();
1164	mHWData->mHWVersion = hwVersion;
1165
1166	return S_OK;
1167	}
1168
1169	STDMETHODIMP Machine::COMGETTER(MemorySize) (ULONG *memorySize)
1170	{
1171	if (!memorySize)
1172	return E_POINTER;
1173
1174	AutoCaller autoCaller(this);
1175	CheckComRCReturnRC(autoCaller.rc());
1176
1177	AutoReadLock alock(this);
1178
1179	*memorySize = mHWData->mMemorySize;
1180
1181	return S_OK;
1182	}
1183
1184	STDMETHODIMP Machine::COMSETTER(MemorySize) (ULONG memorySize)
1185	{
1186	/* check RAM limits */
1187	if ( memorySize < MM_RAM_MIN_IN_MB
1188	\|\| memorySize > MM_RAM_MAX_IN_MB
1189	)
1190	return setError(E_INVALIDARG,
1191	tr("Invalid RAM size: %lu MB (must be in range [%lu, %lu] MB)"),
1192	memorySize, MM_RAM_MIN_IN_MB, MM_RAM_MAX_IN_MB);
1193
1194	AutoCaller autoCaller(this);
1195	CheckComRCReturnRC(autoCaller.rc());
1196
1197	AutoWriteLock alock(this);
1198
1199	HRESULT rc = checkStateDependency(MutableStateDep);
1200	CheckComRCReturnRC(rc);
1201
1202	mHWData.backup();
1203	mHWData->mMemorySize = memorySize;
1204
1205	return S_OK;
1206	}
1207
1208	STDMETHODIMP Machine::COMGETTER(CPUCount) (ULONG *CPUCount)
1209	{
1210	if (!CPUCount)
1211	return E_POINTER;
1212
1213	AutoCaller autoCaller(this);
1214	CheckComRCReturnRC(autoCaller.rc());
1215
1216	AutoReadLock alock(this);
1217
1218	*CPUCount = mHWData->mCPUCount;
1219
1220	return S_OK;
1221	}
1222
1223	STDMETHODIMP Machine::COMSETTER(CPUCount) (ULONG CPUCount)
1224	{
1225	/* check RAM limits */
1226	if ( CPUCount < SchemaDefs::MinCPUCount
1227	\|\| CPUCount > SchemaDefs::MaxCPUCount
1228	)
1229	return setError(E_INVALIDARG,
1230	tr("Invalid virtual CPU count: %lu (must be in range [%lu, %lu])"),
1231	CPUCount, SchemaDefs::MinCPUCount, SchemaDefs::MaxCPUCount);
1232
1233	AutoCaller autoCaller(this);
1234	CheckComRCReturnRC(autoCaller.rc());
1235
1236	AutoWriteLock alock(this);
1237
1238	HRESULT rc = checkStateDependency(MutableStateDep);
1239	CheckComRCReturnRC(rc);
1240
1241	mHWData.backup();
1242	mHWData->mCPUCount = CPUCount;
1243
1244	return S_OK;
1245	}
1246
1247	STDMETHODIMP Machine::COMGETTER(VRAMSize) (ULONG *memorySize)
1248	{
1249	if (!memorySize)
1250	return E_POINTER;
1251
1252	AutoCaller autoCaller(this);
1253	CheckComRCReturnRC(autoCaller.rc());
1254
1255	AutoReadLock alock(this);
1256
1257	*memorySize = mHWData->mVRAMSize;
1258
1259	return S_OK;
1260	}
1261
1262	STDMETHODIMP Machine::COMSETTER(VRAMSize) (ULONG memorySize)
1263	{
1264	/* check VRAM limits */
1265	if (memorySize < SchemaDefs::MinGuestVRAM \|\|
1266	memorySize > SchemaDefs::MaxGuestVRAM)
1267	return setError(E_INVALIDARG,
1268	tr("Invalid VRAM size: %lu MB (must be in range [%lu, %lu] MB)"),
1269	memorySize, SchemaDefs::MinGuestVRAM, SchemaDefs::MaxGuestVRAM);
1270
1271	AutoCaller autoCaller(this);
1272	CheckComRCReturnRC(autoCaller.rc());
1273
1274	AutoWriteLock alock(this);
1275
1276	HRESULT rc = checkStateDependency(MutableStateDep);
1277	CheckComRCReturnRC(rc);
1278
1279	mHWData.backup();
1280	mHWData->mVRAMSize = memorySize;
1281
1282	return S_OK;
1283	}
1284
1285	/** @todo this method should not be public */
1286	STDMETHODIMP Machine::COMGETTER(MemoryBalloonSize) (ULONG *memoryBalloonSize)
1287	{
1288	if (!memoryBalloonSize)
1289	return E_POINTER;
1290
1291	AutoCaller autoCaller(this);
1292	CheckComRCReturnRC(autoCaller.rc());
1293
1294	AutoReadLock alock(this);
1295
1296	*memoryBalloonSize = mHWData->mMemoryBalloonSize;
1297
1298	return S_OK;
1299	}
1300
1301	/** @todo this method should not be public */
1302	STDMETHODIMP Machine::COMSETTER(MemoryBalloonSize) (ULONG memoryBalloonSize)
1303	{
1304	/* check limits */
1305	if (memoryBalloonSize >= VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize))
1306	return setError(E_INVALIDARG,
1307	tr("Invalid memory balloon size: %lu MB (must be in range [%lu, %lu] MB)"),
1308	memoryBalloonSize, 0, VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize));
1309
1310	AutoCaller autoCaller(this);
1311	CheckComRCReturnRC(autoCaller.rc());
1312
1313	AutoWriteLock alock(this);
1314
1315	HRESULT rc = checkStateDependency(MutableStateDep);
1316	CheckComRCReturnRC(rc);
1317
1318	mHWData.backup();
1319	mHWData->mMemoryBalloonSize = memoryBalloonSize;
1320
1321	return S_OK;
1322	}
1323
1324	/** @todo this method should not be public */
1325	STDMETHODIMP Machine::COMGETTER(StatisticsUpdateInterval) (ULONG *statisticsUpdateInterval)
1326	{
1327	if (!statisticsUpdateInterval)
1328	return E_POINTER;
1329
1330	AutoCaller autoCaller(this);
1331	CheckComRCReturnRC(autoCaller.rc());
1332
1333	AutoReadLock alock(this);
1334
1335	*statisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
1336
1337	return S_OK;
1338	}
1339
1340	/** @todo this method should not be public */
1341	STDMETHODIMP Machine::COMSETTER(StatisticsUpdateInterval) (ULONG statisticsUpdateInterval)
1342	{
1343	AutoCaller autoCaller(this);
1344	CheckComRCReturnRC(autoCaller.rc());
1345
1346	AutoWriteLock alock(this);
1347
1348	HRESULT rc = checkStateDependency(MutableStateDep);
1349	CheckComRCReturnRC(rc);
1350
1351	mHWData.backup();
1352	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
1353
1354	return S_OK;
1355	}
1356
1357
1358	STDMETHODIMP Machine::COMGETTER(Accelerate3DEnabled)(BOOL *enabled)
1359	{
1360	if (!enabled)
1361	return E_POINTER;
1362
1363	AutoCaller autoCaller(this);
1364	CheckComRCReturnRC(autoCaller.rc());
1365
1366	AutoReadLock alock(this);
1367
1368	*enabled = mHWData->mAccelerate3DEnabled;
1369
1370	return S_OK;
1371	}
1372
1373	STDMETHODIMP Machine::COMSETTER(Accelerate3DEnabled)(BOOL enable)
1374	{
1375	AutoCaller autoCaller(this);
1376	CheckComRCReturnRC(autoCaller.rc());
1377
1378	AutoWriteLock alock(this);
1379
1380	HRESULT rc = checkStateDependency(MutableStateDep);
1381	CheckComRCReturnRC(rc);
1382
1383	/** @todo check validity! */
1384
1385	mHWData.backup();
1386	mHWData->mAccelerate3DEnabled = enable;
1387
1388	return S_OK;
1389	}
1390
1391
1392	STDMETHODIMP Machine::COMGETTER(Accelerate2DVideoEnabled)(BOOL *enabled)
1393	{
1394	if (!enabled)
1395	return E_POINTER;
1396
1397	AutoCaller autoCaller(this);
1398	CheckComRCReturnRC(autoCaller.rc());
1399
1400	AutoReadLock alock(this);
1401
1402	*enabled = mHWData->mAccelerate2DVideoEnabled;
1403
1404	return S_OK;
1405	}
1406
1407	STDMETHODIMP Machine::COMSETTER(Accelerate2DVideoEnabled)(BOOL enable)
1408	{
1409	AutoCaller autoCaller(this);
1410	CheckComRCReturnRC(autoCaller.rc());
1411
1412	AutoWriteLock alock(this);
1413
1414	HRESULT rc = checkStateDependency(MutableStateDep);
1415	CheckComRCReturnRC(rc);
1416
1417	/** @todo check validity! */
1418
1419	mHWData.backup();
1420	mHWData->mAccelerate2DVideoEnabled = enable;
1421
1422	return S_OK;
1423	}
1424
1425	STDMETHODIMP Machine::COMGETTER(MonitorCount) (ULONG *monitorCount)
1426	{
1427	if (!monitorCount)
1428	return E_POINTER;
1429
1430	AutoCaller autoCaller(this);
1431	CheckComRCReturnRC(autoCaller.rc());
1432
1433	AutoReadLock alock(this);
1434
1435	*monitorCount = mHWData->mMonitorCount;
1436
1437	return S_OK;
1438	}
1439
1440	STDMETHODIMP Machine::COMSETTER(MonitorCount) (ULONG monitorCount)
1441	{
1442	/* make sure monitor count is a sensible number */
1443	if (monitorCount < 1 \|\| monitorCount > SchemaDefs::MaxGuestMonitors)
1444	return setError(E_INVALIDARG,
1445	tr("Invalid monitor count: %lu (must be in range [%lu, %lu])"),
1446	monitorCount, 1, SchemaDefs::MaxGuestMonitors);
1447
1448	AutoCaller autoCaller(this);
1449	CheckComRCReturnRC(autoCaller.rc());
1450
1451	AutoWriteLock alock(this);
1452
1453	HRESULT rc = checkStateDependency(MutableStateDep);
1454	CheckComRCReturnRC(rc);
1455
1456	mHWData.backup();
1457	mHWData->mMonitorCount = monitorCount;
1458
1459	return S_OK;
1460	}
1461
1462	STDMETHODIMP Machine::COMGETTER(BIOSSettings)(IBIOSSettings **biosSettings)
1463	{
1464	if (!biosSettings)
1465	return E_POINTER;
1466
1467	AutoCaller autoCaller(this);
1468	CheckComRCReturnRC(autoCaller.rc());
1469
1470	/* mBIOSSettings is constant during life time, no need to lock */
1471	mBIOSSettings.queryInterfaceTo(biosSettings);
1472
1473	return S_OK;
1474	}
1475
1476	STDMETHODIMP Machine::COMGETTER(HWVirtExEnabled)(BOOL *enabled)
1477	{
1478	if (!enabled)
1479	return E_POINTER;
1480
1481	AutoCaller autoCaller(this);
1482	CheckComRCReturnRC(autoCaller.rc());
1483
1484	AutoReadLock alock(this);
1485
1486	*enabled = mHWData->mHWVirtExEnabled;
1487
1488	return S_OK;
1489	}
1490
1491	STDMETHODIMP Machine::COMSETTER(HWVirtExEnabled)(BOOL enable)
1492	{
1493	AutoCaller autoCaller(this);
1494	CheckComRCReturnRC(autoCaller.rc());
1495
1496	AutoWriteLock alock(this);
1497
1498	HRESULT rc = checkStateDependency(MutableStateDep);
1499	CheckComRCReturnRC(rc);
1500
1501	/** @todo check validity! */
1502
1503	mHWData.backup();
1504	mHWData->mHWVirtExEnabled = enable;
1505
1506	return S_OK;
1507	}
1508
1509	STDMETHODIMP Machine::COMGETTER(HWVirtExNestedPagingEnabled)(BOOL *enabled)
1510	{
1511	if (!enabled)
1512	return E_POINTER;
1513
1514	AutoCaller autoCaller(this);
1515	CheckComRCReturnRC(autoCaller.rc());
1516
1517	AutoReadLock alock(this);
1518
1519	*enabled = mHWData->mHWVirtExNestedPagingEnabled;
1520
1521	return S_OK;
1522	}
1523
1524	STDMETHODIMP Machine::COMSETTER(HWVirtExNestedPagingEnabled)(BOOL enable)
1525	{
1526	AutoCaller autoCaller(this);
1527	CheckComRCReturnRC(autoCaller.rc());
1528
1529	AutoWriteLock alock(this);
1530
1531	HRESULT rc = checkStateDependency(MutableStateDep);
1532	CheckComRCReturnRC(rc);
1533
1534	/** @todo check validity! */
1535
1536	mHWData.backup();
1537	mHWData->mHWVirtExNestedPagingEnabled = enable;
1538
1539	return S_OK;
1540	}
1541
1542	STDMETHODIMP Machine::COMGETTER(HWVirtExVPIDEnabled)(BOOL *enabled)
1543	{
1544	if (!enabled)
1545	return E_POINTER;
1546
1547	AutoCaller autoCaller(this);
1548	CheckComRCReturnRC(autoCaller.rc());
1549
1550	AutoReadLock alock(this);
1551
1552	*enabled = mHWData->mHWVirtExVPIDEnabled;
1553
1554	return S_OK;
1555	}
1556
1557	STDMETHODIMP Machine::COMSETTER(HWVirtExVPIDEnabled)(BOOL enable)
1558	{
1559	AutoCaller autoCaller(this);
1560	CheckComRCReturnRC(autoCaller.rc());
1561
1562	AutoWriteLock alock(this);
1563
1564	HRESULT rc = checkStateDependency(MutableStateDep);
1565	CheckComRCReturnRC(rc);
1566
1567	/** @todo check validity! */
1568
1569	mHWData.backup();
1570	mHWData->mHWVirtExVPIDEnabled = enable;
1571
1572	return S_OK;
1573	}
1574
1575	STDMETHODIMP Machine::COMGETTER(PAEEnabled)(BOOL *enabled)
1576	{
1577	if (!enabled)
1578	return E_POINTER;
1579
1580	AutoCaller autoCaller(this);
1581	CheckComRCReturnRC(autoCaller.rc());
1582
1583	AutoReadLock alock(this);
1584
1585	*enabled = mHWData->mPAEEnabled;
1586
1587	return S_OK;
1588	}
1589
1590	STDMETHODIMP Machine::COMSETTER(PAEEnabled)(BOOL enable)
1591	{
1592	AutoCaller autoCaller(this);
1593	CheckComRCReturnRC(autoCaller.rc());
1594
1595	AutoWriteLock alock(this);
1596
1597	HRESULT rc = checkStateDependency(MutableStateDep);
1598	CheckComRCReturnRC(rc);
1599
1600	/** @todo check validity! */
1601
1602	mHWData.backup();
1603	mHWData->mPAEEnabled = enable;
1604
1605	return S_OK;
1606	}
1607
1608	STDMETHODIMP Machine::COMGETTER(SnapshotFolder) (BSTR *aSnapshotFolder)
1609	{
1610	CheckComArgOutPointerValid(aSnapshotFolder);
1611
1612	AutoCaller autoCaller(this);
1613	CheckComRCReturnRC(autoCaller.rc());
1614
1615	AutoReadLock alock(this);
1616
1617	mUserData->mSnapshotFolderFull.cloneTo(aSnapshotFolder);
1618
1619	return S_OK;
1620	}
1621
1622	STDMETHODIMP Machine::COMSETTER(SnapshotFolder) (IN_BSTR aSnapshotFolder)
1623	{
1624	/* @todo (r=dmik):
1625	* 1. Allow to change the name of the snapshot folder containing snapshots
1626	* 2. Rename the folder on disk instead of just changing the property
1627	* value (to be smart and not to leave garbage). Note that it cannot be
1628	* done here because the change may be rolled back. Thus, the right
1629	* place is #saveSettings().
1630	*/
1631
1632	AutoCaller autoCaller(this);
1633	CheckComRCReturnRC(autoCaller.rc());
1634
1635	AutoWriteLock alock(this);
1636
1637	HRESULT rc = checkStateDependency(MutableStateDep);
1638	CheckComRCReturnRC(rc);
1639
1640	if (!mData->mCurrentSnapshot.isNull())
1641	return setError(E_FAIL,
1642	tr("The snapshot folder of a machine with snapshots cannot be changed (please discard all snapshots first)"));
1643
1644	Utf8Str snapshotFolder = aSnapshotFolder;
1645
1646	if (snapshotFolder.isEmpty())
1647	{
1648	if (isInOwnDir())
1649	{
1650	/* the default snapshots folder is 'Snapshots' in the machine dir */
1651	snapshotFolder = Utf8Str ("Snapshots");
1652	}
1653	else
1654	{
1655	/* the default snapshots folder is {UUID}, for backwards
1656	* compatibility and to resolve conflicts */
1657	snapshotFolder = Utf8StrFmt ("{%RTuuid}", mData->mUuid.raw());
1658	}
1659	}
1660
1661	int vrc = calculateFullPath(snapshotFolder, snapshotFolder);
1662	if (RT_FAILURE(vrc))
1663	return setError(E_FAIL,
1664	tr("Invalid snapshot folder '%ls' (%Rrc)"),
1665	aSnapshotFolder, vrc);
1666
1667	mUserData.backup();
1668	mUserData->mSnapshotFolder = aSnapshotFolder;
1669	mUserData->mSnapshotFolderFull = snapshotFolder;
1670
1671	return S_OK;
1672	}
1673
1674	STDMETHODIMP Machine::
1675	COMGETTER(HardDiskAttachments) (ComSafeArrayOut(IHardDiskAttachment *, aAttachments))
1676	{
1677	if (ComSafeArrayOutIsNull(aAttachments))
1678	return E_POINTER;
1679
1680	AutoCaller autoCaller(this);
1681	CheckComRCReturnRC(autoCaller.rc());
1682
1683	AutoReadLock alock(this);
1684
1685	SafeIfaceArray<IHardDiskAttachment> attachments (mHDData->mAttachments);
1686	attachments.detachTo(ComSafeArrayOutArg(aAttachments));
1687
1688	return S_OK;
1689	}
1690
1691	STDMETHODIMP Machine::COMGETTER(VRDPServer)(IVRDPServer **vrdpServer)
1692	{
1693	#ifdef VBOX_WITH_VRDP
1694	if (!vrdpServer)
1695	return E_POINTER;
1696
1697	AutoCaller autoCaller(this);
1698	CheckComRCReturnRC(autoCaller.rc());
1699
1700	AutoReadLock alock(this);
1701
1702	Assert (!!mVRDPServer);
1703	mVRDPServer.queryInterfaceTo(vrdpServer);
1704
1705	return S_OK;
1706	#else
1707	NOREF(vrdpServer);
1708	ReturnComNotImplemented();
1709	#endif
1710	}
1711
1712	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1713	{
1714	if (!dvdDrive)
1715	return E_POINTER;
1716
1717	AutoCaller autoCaller(this);
1718	CheckComRCReturnRC(autoCaller.rc());
1719
1720	AutoReadLock alock(this);
1721
1722	Assert (!!mDVDDrive);
1723	mDVDDrive.queryInterfaceTo(dvdDrive);
1724	return S_OK;
1725	}
1726
1727	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1728	{
1729	if (!floppyDrive)
1730	return E_POINTER;
1731
1732	AutoCaller autoCaller(this);
1733	CheckComRCReturnRC(autoCaller.rc());
1734
1735	AutoReadLock alock(this);
1736
1737	Assert (!!mFloppyDrive);
1738	mFloppyDrive.queryInterfaceTo(floppyDrive);
1739	return S_OK;
1740	}
1741
1742	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1743	{
1744	if (!audioAdapter)
1745	return E_POINTER;
1746
1747	AutoCaller autoCaller(this);
1748	CheckComRCReturnRC(autoCaller.rc());
1749
1750	AutoReadLock alock(this);
1751
1752	mAudioAdapter.queryInterfaceTo(audioAdapter);
1753	return S_OK;
1754	}
1755
1756	STDMETHODIMP Machine::COMGETTER(USBController) (IUSBController **aUSBController)
1757	{
1758	#ifdef VBOX_WITH_USB
1759	CheckComArgOutPointerValid(aUSBController);
1760
1761	AutoCaller autoCaller(this);
1762	CheckComRCReturnRC(autoCaller.rc());
1763
1764	MultiResult rc = mParent->host()->checkUSBProxyService();
1765	CheckComRCReturnRC(rc);
1766
1767	AutoReadLock alock(this);
1768
1769	return rc = mUSBController.queryInterfaceTo(aUSBController);
1770	#else
1771	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1772	* extended error info to indicate that USB is simply not available
1773	* (w/o treting it as a failure), for example, as in OSE */
1774	NOREF(aUSBController);
1775	ReturnComNotImplemented();
1776	#endif
1777	}
1778
1779	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *aFilePath)
1780	{
1781	CheckComArgOutPointerValid(aFilePath);
1782
1783	AutoLimitedCaller autoCaller(this);
1784	CheckComRCReturnRC(autoCaller.rc());
1785
1786	AutoReadLock alock(this);
1787
1788	mData->m_strConfigFileFull.cloneTo(aFilePath);
1789	return S_OK;
1790	}
1791
1792	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *aModified)
1793	{
1794	CheckComArgOutPointerValid(aModified);
1795
1796	AutoCaller autoCaller(this);
1797	CheckComRCReturnRC(autoCaller.rc());
1798
1799	AutoWriteLock alock(this);
1800
1801	HRESULT rc = checkStateDependency(MutableStateDep);
1802	CheckComRCReturnRC(rc);
1803
1804	if (mData->mInitMode == Init_New)
1805	/*
1806	* if this is a new machine then no config file exists yet, so always return TRUE
1807	*/
1808	*aModified = TRUE;
1809	else
1810	*aModified = isModified();
1811
1812	return S_OK;
1813	}
1814
1815	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1816	{
1817	CheckComArgOutPointerValid(aSessionState);
1818
1819	AutoCaller autoCaller(this);
1820	CheckComRCReturnRC(autoCaller.rc());
1821
1822	AutoReadLock alock(this);
1823
1824	*aSessionState = mData->mSession.mState;
1825
1826	return S_OK;
1827	}
1828
1829	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1830	{
1831	CheckComArgOutPointerValid(aSessionType);
1832
1833	AutoCaller autoCaller(this);
1834	CheckComRCReturnRC(autoCaller.rc());
1835
1836	AutoReadLock alock(this);
1837
1838	if (mData->mSession.mType.isNull())
1839	Bstr("").cloneTo(aSessionType);
1840	else
1841	mData->mSession.mType.cloneTo(aSessionType);
1842
1843	return S_OK;
1844	}
1845
1846	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1847	{
1848	CheckComArgOutPointerValid(aSessionPid);
1849
1850	AutoCaller autoCaller(this);
1851	CheckComRCReturnRC(autoCaller.rc());
1852
1853	AutoReadLock alock(this);
1854
1855	*aSessionPid = mData->mSession.mPid;
1856
1857	return S_OK;
1858	}
1859
1860	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1861	{
1862	if (!machineState)
1863	return E_POINTER;
1864
1865	AutoCaller autoCaller(this);
1866	CheckComRCReturnRC(autoCaller.rc());
1867
1868	AutoReadLock alock(this);
1869
1870	*machineState = mData->mMachineState;
1871
1872	return S_OK;
1873	}
1874
1875	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1876	{
1877	CheckComArgOutPointerValid(aLastStateChange);
1878
1879	AutoCaller autoCaller(this);
1880	CheckComRCReturnRC(autoCaller.rc());
1881
1882	AutoReadLock alock(this);
1883
1884	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1885
1886	return S_OK;
1887	}
1888
1889	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1890	{
1891	CheckComArgOutPointerValid(aStateFilePath);
1892
1893	AutoCaller autoCaller(this);
1894	CheckComRCReturnRC(autoCaller.rc());
1895
1896	AutoReadLock alock(this);
1897
1898	if (mSSData->mStateFilePath.isEmpty())
1899	Bstr("").cloneTo(aStateFilePath);
1900	else
1901	mSSData->mStateFilePath.cloneTo(aStateFilePath);
1902
1903	return S_OK;
1904	}
1905
1906	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1907	{
1908	CheckComArgOutPointerValid(aLogFolder);
1909
1910	AutoCaller autoCaller(this);
1911	AssertComRCReturnRC(autoCaller.rc());
1912
1913	AutoReadLock alock(this);
1914
1915	Utf8Str logFolder;
1916	getLogFolder (logFolder);
1917
1918	Bstr (logFolder).cloneTo(aLogFolder);
1919
1920	return S_OK;
1921	}
1922
1923	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1924	{
1925	CheckComArgOutPointerValid(aCurrentSnapshot);
1926
1927	AutoCaller autoCaller(this);
1928	CheckComRCReturnRC(autoCaller.rc());
1929
1930	AutoReadLock alock(this);
1931
1932	mData->mCurrentSnapshot.queryInterfaceTo(aCurrentSnapshot);
1933
1934	return S_OK;
1935	}
1936
1937	STDMETHODIMP Machine::COMGETTER(SnapshotCount)(ULONG *aSnapshotCount)
1938	{
1939	CheckComArgOutPointerValid(aSnapshotCount);
1940
1941	AutoCaller autoCaller(this);
1942	CheckComRCReturnRC(autoCaller.rc());
1943
1944	AutoReadLock alock(this);
1945
1946	*aSnapshotCount = !mData->mFirstSnapshot
1947	? 0
1948	: mData->mFirstSnapshot->getAllChildrenCount() + 1;
1949
1950	return S_OK;
1951	}
1952
1953	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1954	{
1955	CheckComArgOutPointerValid(aCurrentStateModified);
1956
1957	AutoCaller autoCaller(this);
1958	CheckComRCReturnRC(autoCaller.rc());
1959
1960	AutoReadLock alock(this);
1961
1962	/* Note: for machines with no snapshots, we always return FALSE
1963	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1964	* reasons :) */
1965
1966	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1967	mData->mCurrentStateModified;
1968
1969	return S_OK;
1970	}
1971
1972	STDMETHODIMP Machine::COMGETTER(SharedFolders) (ComSafeArrayOut(ISharedFolder *, aSharedFolders))
1973	{
1974	CheckComArgOutSafeArrayPointerValid(aSharedFolders);
1975
1976	AutoCaller autoCaller(this);
1977	CheckComRCReturnRC(autoCaller.rc());
1978
1979	AutoReadLock alock(this);
1980
1981	SafeIfaceArray<ISharedFolder> folders (mHWData->mSharedFolders);
1982	folders.detachTo(ComSafeArrayOutArg(aSharedFolders));
1983
1984	return S_OK;
1985	}
1986
1987	STDMETHODIMP Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1988	{
1989	CheckComArgOutPointerValid(aClipboardMode);
1990
1991	AutoCaller autoCaller(this);
1992	CheckComRCReturnRC(autoCaller.rc());
1993
1994	AutoReadLock alock(this);
1995
1996	*aClipboardMode = mHWData->mClipboardMode;
1997
1998	return S_OK;
1999	}
2000
2001	STDMETHODIMP
2002	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
2003	{
2004	AutoCaller autoCaller(this);
2005	CheckComRCReturnRC(autoCaller.rc());
2006
2007	AutoWriteLock alock(this);
2008
2009	HRESULT rc = checkStateDependency(MutableStateDep);
2010	CheckComRCReturnRC(rc);
2011
2012	mHWData.backup();
2013	mHWData->mClipboardMode = aClipboardMode;
2014
2015	return S_OK;
2016	}
2017
2018	STDMETHODIMP
2019	Machine::COMGETTER(GuestPropertyNotificationPatterns) (BSTR *aPatterns)
2020	{
2021	CheckComArgOutPointerValid(aPatterns);
2022
2023	AutoCaller autoCaller(this);
2024	CheckComRCReturnRC(autoCaller.rc());
2025
2026	AutoReadLock alock(this);
2027
2028	mHWData->mGuestPropertyNotificationPatterns.cloneTo(aPatterns);
2029
2030	return RT_LIKELY (aPatterns != NULL) ? S_OK : E_OUTOFMEMORY;
2031	}
2032
2033	STDMETHODIMP
2034	Machine::COMSETTER(GuestPropertyNotificationPatterns) (IN_BSTR aPatterns)
2035	{
2036	AssertLogRelReturn (VALID_PTR (aPatterns), E_POINTER);
2037	AutoCaller autoCaller(this);
2038	CheckComRCReturnRC(autoCaller.rc());
2039
2040	AutoWriteLock alock(this);
2041
2042	HRESULT rc = checkStateDependency(MutableStateDep);
2043	CheckComRCReturnRC(rc);
2044
2045	mHWData.backup();
2046	mHWData->mGuestPropertyNotificationPatterns = aPatterns;
2047
2048	return RT_LIKELY (!mHWData->mGuestPropertyNotificationPatterns.isNull())
2049	? S_OK : E_OUTOFMEMORY;
2050	}
2051
2052	STDMETHODIMP
2053	Machine::COMGETTER(StorageControllers) (ComSafeArrayOut(IStorageController *, aStorageControllers))
2054	{
2055	CheckComArgOutSafeArrayPointerValid(aStorageControllers);
2056
2057	AutoCaller autoCaller(this);
2058	CheckComRCReturnRC(autoCaller.rc());
2059
2060	AutoReadLock alock(this);
2061
2062	SafeIfaceArray<IStorageController> ctrls (*mStorageControllers.data());
2063	ctrls.detachTo(ComSafeArrayOutArg(aStorageControllers));
2064
2065	return S_OK;
2066	}
2067
2068	// IMachine methods
2069	/////////////////////////////////////////////////////////////////////////////
2070
2071	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
2072	{
2073	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
2074	return setError(E_INVALIDARG,
2075	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
2076	aPosition, SchemaDefs::MaxBootPosition);
2077
2078	if (aDevice == DeviceType_USB)
2079	return setError(E_NOTIMPL,
2080	tr("Booting from USB device is currently not supported"));
2081
2082	AutoCaller autoCaller(this);
2083	CheckComRCReturnRC(autoCaller.rc());
2084
2085	AutoWriteLock alock(this);
2086
2087	HRESULT rc = checkStateDependency(MutableStateDep);
2088	CheckComRCReturnRC(rc);
2089
2090	mHWData.backup();
2091	mHWData->mBootOrder [aPosition - 1] = aDevice;
2092
2093	return S_OK;
2094	}
2095
2096	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
2097	{
2098	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
2099	return setError(E_INVALIDARG,
2100	tr("Invalid boot position: %lu (must be in range [1, %lu])"),
2101	aPosition, SchemaDefs::MaxBootPosition);
2102
2103	AutoCaller autoCaller(this);
2104	CheckComRCReturnRC(autoCaller.rc());
2105
2106	AutoReadLock alock(this);
2107
2108	*aDevice = mHWData->mBootOrder [aPosition - 1];
2109
2110	return S_OK;
2111	}
2112
2113	STDMETHODIMP Machine::AttachHardDisk(IN_BSTR aId,
2114	IN_BSTR aControllerName, LONG aControllerPort,
2115	LONG aDevice)
2116	{
2117	LogFlowThisFunc (("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2118	aControllerName, aControllerPort, aDevice));
2119
2120	AutoCaller autoCaller(this);
2121	CheckComRCReturnRC(autoCaller.rc());
2122
2123	/* VirtualBox::findHardDisk() need read lock; also we want to make sure the
2124	* hard disk object we pick up doesn't get unregistered before we finish. */
2125	AutoReadLock vboxLock (mParent);
2126	AutoWriteLock alock(this);
2127
2128	HRESULT rc = checkStateDependency(MutableStateDep);
2129	CheckComRCReturnRC(rc);
2130
2131	/// @todo NEWMEDIA implicit machine registration
2132	if (!mData->mRegistered)
2133	return setError (VBOX_E_INVALID_OBJECT_STATE,
2134	tr ("Cannot attach hard disks to an unregistered machine"));
2135
2136	AssertReturn(mData->mMachineState != MachineState_Saved, E_FAIL);
2137
2138	if (Global::IsOnlineOrTransient (mData->mMachineState))
2139	return setError (VBOX_E_INVALID_VM_STATE,
2140	tr ("Invalid machine state: %d"), mData->mMachineState);
2141
2142	/* Check for an existing controller. */
2143	ComObjPtr<StorageController> ctl;
2144	rc = getStorageControllerByName(aControllerName, ctl, true /* aSetError */);
2145	CheckComRCReturnRC(rc);
2146
2147	/* check that the port and device are not out of range. */
2148	ULONG portCount;
2149	ULONG devicesPerPort;
2150	rc = ctl->COMGETTER(PortCount)(&portCount);
2151	CheckComRCReturnRC(rc);
2152	rc = ctl->COMGETTER(MaxDevicesPerPortCount)(&devicesPerPort);
2153	CheckComRCReturnRC(rc);
2154
2155	if ( (aControllerPort < 0)
2156	\|\| (aControllerPort >= (LONG)portCount)
2157	\|\| (aDevice < 0)
2158	\|\| (aDevice >= (LONG)devicesPerPort)
2159	)
2160	return setError (E_INVALIDARG,
2161	tr ("The port and/or count parameter are out of range [%lu:%lu]"),
2162	portCount, devicesPerPort);
2163
2164	/* check if the device slot is already busy */
2165	HDData::AttachmentList::const_iterator it =
2166	std::find_if (mHDData->mAttachments.begin(),
2167	mHDData->mAttachments.end(),
2168	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2169
2170	if (it != mHDData->mAttachments.end())
2171	{
2172	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
2173	AutoReadLock hdLock (hd);
2174	return setError(VBOX_E_OBJECT_IN_USE,
2175	tr ("Hard disk '%ls' is already attached to device slot %d on port %d of controller '%ls' of this virtual machine"),
2176	hd->locationFull().raw(), aDevice, aControllerPort, aControllerName);
2177	}
2178
2179	Guid id(aId);
2180
2181	/* find a hard disk by UUID */
2182	ComObjPtr<HardDisk> hd;
2183	rc = mParent->findHardDisk(&id, NULL, true /* aSetError */, &hd);
2184	CheckComRCReturnRC(rc);
2185
2186	AutoCaller hdCaller (hd);
2187	CheckComRCReturnRC(hdCaller.rc());
2188
2189	AutoWriteLock hdLock (hd);
2190
2191	if (std::find_if (mHDData->mAttachments.begin(),
2192	mHDData->mAttachments.end(),
2193	HardDiskAttachment::RefersTo (hd)) !=
2194	mHDData->mAttachments.end())
2195	{
2196	return setError(VBOX_E_OBJECT_IN_USE,
2197	tr("Hard disk '%ls' is already attached to this virtual machine"),
2198	hd->locationFull().raw());
2199	}
2200
2201	bool indirect = hd->isReadOnly();
2202	bool associate = true;
2203
2204	do
2205	{
2206	if (mHDData.isBackedUp())
2207	{
2208	const HDData::AttachmentList &oldAtts =
2209	mHDData.backedUpData()->mAttachments;
2210
2211	/* check if the hard disk was attached to the VM before we started
2212	* changing attachemnts in which case the attachment just needs to
2213	* be restored */
2214	HDData::AttachmentList::const_iterator it =
2215	std::find_if (oldAtts.begin(), oldAtts.end(),
2216	HardDiskAttachment::RefersTo (hd));
2217	if (it != oldAtts.end())
2218	{
2219	AssertReturn(!indirect, E_FAIL);
2220
2221	/* see if it's the same bus/channel/device */
2222	if ((*it)->device() == aDevice &&
2223	(*it)->port() == aControllerPort &&
2224	(*it)->controller() == aControllerName)
2225	{
2226	/* the simplest case: restore the whole attachment
2227	* and return, nothing else to do */
2228	mHDData->mAttachments.push_back (*it);
2229	return S_OK;
2230	}
2231
2232	/* bus/channel/device differ; we need a new attachment object,
2233	* but don't try to associate it again */
2234	associate = false;
2235	break;
2236	}
2237	}
2238
2239	/* go further only if the attachment is to be indirect */
2240	if (!indirect)
2241	break;
2242
2243	/* perform the so called smart attachment logic for indirect
2244	* attachments. Note that smart attachment is only applicable to base
2245	* hard disks. */
2246
2247	if (hd->parent().isNull())
2248	{
2249	/* first, investigate the backup copy of the current hard disk
2250	* attachments to make it possible to re-attach existing diffs to
2251	* another device slot w/o losing their contents */
2252	if (mHDData.isBackedUp())
2253	{
2254	const HDData::AttachmentList &oldAtts =
2255	mHDData.backedUpData()->mAttachments;
2256
2257	HDData::AttachmentList::const_iterator foundIt = oldAtts.end();
2258	uint32_t foundLevel = 0;
2259
2260	for (HDData::AttachmentList::const_iterator
2261	it = oldAtts.begin(); it != oldAtts.end(); ++ it)
2262	{
2263	uint32_t level = 0;
2264	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2265	{
2266	/* skip the hard disk if its currently attached (we
2267	* cannot attach the same hard disk twice) */
2268	if (std::find_if (mHDData->mAttachments.begin(),
2269	mHDData->mAttachments.end(),
2270	HardDiskAttachment::RefersTo (
2271	(*it)->hardDisk())) !=
2272	mHDData->mAttachments.end())
2273	continue;
2274
2275	/* matched device, channel and bus (i.e. attached to the
2276	* same place) will win and immediately stop the search;
2277	* otherwise the attachment that has the youngest
2278	* descendant of hd will be used
2279	*/
2280	if ((*it)->device() == aDevice &&
2281	(*it)->port() == aControllerPort &&
2282	(*it)->controller() == aControllerName)
2283	{
2284	/* the simplest case: restore the whole attachment
2285	* and return, nothing else to do */
2286	mHDData->mAttachments.push_back (*it);
2287	return S_OK;
2288	}
2289	else
2290	if (foundIt == oldAtts.end() \|\|
2291	level > foundLevel /* prefer younger */)
2292	{
2293	foundIt = it;
2294	foundLevel = level;
2295	}
2296	}
2297	}
2298
2299	if (foundIt != oldAtts.end())
2300	{
2301	/* use the previously attached hard disk */
2302	hd = (*foundIt)->hardDisk();
2303	hdCaller.attach (hd);
2304	CheckComRCReturnRC(hdCaller.rc());
2305	hdLock.attach (hd);
2306	/* not implicit, doesn't require association with this VM */
2307	indirect = false;
2308	associate = false;
2309	/* go right to the HardDiskAttachment creation */
2310	break;
2311	}
2312	}
2313
2314	/* then, search through snapshots for the best diff in the given
2315	* hard disk's chain to base the new diff on */
2316
2317	ComObjPtr<HardDisk> base;
2318	ComObjPtr<Snapshot> snap = mData->mCurrentSnapshot;
2319	while (snap)
2320	{
2321	AutoReadLock snapLock (snap);
2322
2323	const HDData::AttachmentList &snapAtts = snap->getSnapshotMachine()->mHDData->mAttachments;
2324
2325	HDData::AttachmentList::const_iterator foundIt = snapAtts.end();
2326	uint32_t foundLevel = 0;
2327
2328	for (HDData::AttachmentList::const_iterator it = snapAtts.begin();
2329	it != snapAtts.end();
2330	++it)
2331	{
2332	uint32_t level = 0;
2333	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2334	{
2335	/* matched device, channel and bus (i.e. attached to the
2336	* same place) will win and immediately stop the search;
2337	* otherwise the attachment that has the youngest
2338	* descendant of hd will be used
2339	*/
2340	if ((*it)->device() == aDevice &&
2341	(*it)->port() == aControllerPort &&
2342	(*it)->controller() == aControllerName)
2343	{
2344	foundIt = it;
2345	break;
2346	}
2347	else
2348	if (foundIt == snapAtts.end() \|\|
2349	level > foundLevel /* prefer younger */)
2350	{
2351	foundIt = it;
2352	foundLevel = level;
2353	}
2354	}
2355	}
2356
2357	if (foundIt != snapAtts.end())
2358	{
2359	base = (*foundIt)->hardDisk();
2360	break;
2361	}
2362
2363	snap = snap->parent();
2364	}
2365
2366	/* found a suitable diff, use it as a base */
2367	if (!base.isNull())
2368	{
2369	hd = base;
2370	hdCaller.attach (hd);
2371	CheckComRCReturnRC(hdCaller.rc());
2372	hdLock.attach (hd);
2373	}
2374	}
2375
2376	ComObjPtr<HardDisk> diff;
2377	diff.createObject();
2378	rc = diff->init(mParent,
2379	hd->preferredDiffFormat(),
2380	BstrFmt ("%ls"RTPATH_SLASH_STR,
2381	mUserData->mSnapshotFolderFull.raw()));
2382	CheckComRCReturnRC(rc);
2383
2384	/* make sure the hard disk is not modified before createDiffStorage() */
2385	rc = hd->LockRead (NULL);
2386	CheckComRCReturnRC(rc);
2387
2388	/* will leave the lock before the potentially lengthy operation, so
2389	* protect with the special state */
2390	MachineState_T oldState = mData->mMachineState;
2391	setMachineState (MachineState_SettingUp);
2392
2393	hdLock.leave();
2394	alock.leave();
2395	vboxLock.unlock();
2396
2397	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard);
2398
2399	alock.enter();
2400	hdLock.enter();
2401
2402	setMachineState (oldState);
2403
2404	hd->UnlockRead (NULL);
2405
2406	CheckComRCReturnRC(rc);
2407
2408	/* use the created diff for the actual attachment */
2409	hd = diff;
2410	hdCaller.attach (hd);
2411	CheckComRCReturnRC(hdCaller.rc());
2412	hdLock.attach (hd);
2413	}
2414	while (0);
2415
2416	ComObjPtr<HardDiskAttachment> attachment;
2417	attachment.createObject();
2418	rc = attachment->init (hd, aControllerName, aControllerPort, aDevice, indirect);
2419	CheckComRCReturnRC(rc);
2420
2421	if (associate)
2422	{
2423	/* as the last step, associate the hard disk to the VM */
2424	rc = hd->attachTo (mData->mUuid);
2425	/* here we can fail because of Deleting, or being in process of
2426	* creating a Diff */
2427	CheckComRCReturnRC(rc);
2428	}
2429
2430	/* sucsess: finally remember the attachment */
2431	mHDData.backup();
2432	mHDData->mAttachments.push_back (attachment);
2433
2434	return rc;
2435	}
2436
2437	STDMETHODIMP Machine::GetHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2438	LONG aDevice, IHardDisk **aHardDisk)
2439	{
2440	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2441	aControllerName, aControllerPort, aDevice));
2442
2443	CheckComArgNotNull (aControllerName);
2444	CheckComArgOutPointerValid(aHardDisk);
2445
2446	AutoCaller autoCaller(this);
2447	CheckComRCReturnRC(autoCaller.rc());
2448
2449	AutoReadLock alock(this);
2450
2451	*aHardDisk = NULL;
2452
2453	HDData::AttachmentList::const_iterator it =
2454	std::find_if (mHDData->mAttachments.begin(),
2455	mHDData->mAttachments.end(),
2456	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2457
2458	if (it == mHDData->mAttachments.end())
2459	return setError (VBOX_E_OBJECT_NOT_FOUND,
2460	tr ("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2461	aDevice, aControllerPort, aControllerName);
2462
2463	(*it)->hardDisk().queryInterfaceTo(aHardDisk);
2464
2465	return S_OK;
2466	}
2467
2468	STDMETHODIMP Machine::DetachHardDisk(IN_BSTR aControllerName, LONG aControllerPort,
2469	LONG aDevice)
2470	{
2471	CheckComArgNotNull (aControllerName);
2472
2473	LogFlowThisFunc(("aControllerName=\"%ls\" aControllerPort=%ld aDevice=%ld\n",
2474	aControllerName, aControllerPort, aDevice));
2475
2476	AutoCaller autoCaller(this);
2477	CheckComRCReturnRC(autoCaller.rc());
2478
2479	AutoWriteLock alock(this);
2480
2481	HRESULT rc = checkStateDependency(MutableStateDep);
2482	CheckComRCReturnRC(rc);
2483
2484	AssertReturn(mData->mMachineState != MachineState_Saved, E_FAIL);
2485
2486	if (Global::IsOnlineOrTransient (mData->mMachineState))
2487	return setError (VBOX_E_INVALID_VM_STATE,
2488	tr ("Invalid machine state: %d"), mData->mMachineState);
2489
2490	HDData::AttachmentList::const_iterator it =
2491	std::find_if (mHDData->mAttachments.begin(),
2492	mHDData->mAttachments.end(),
2493	HardDiskAttachment::EqualsTo (aControllerName, aControllerPort, aDevice));
2494
2495	if (it == mHDData->mAttachments.end())
2496	return setError(VBOX_E_OBJECT_NOT_FOUND,
2497	tr("No hard disk attached to device slot %d on port %d of controller '%ls'"),
2498	aDevice, aControllerPort, aControllerName);
2499
2500	ComObjPtr<HardDiskAttachment> hda = *it;
2501	ComObjPtr<HardDisk> hd = hda->hardDisk();
2502
2503	if (hda->isImplicit())
2504	{
2505	/* attempt to implicitly delete the implicitly created diff */
2506
2507	/// @todo move the implicit flag from HardDiskAttachment to HardDisk
2508	/// and forbid any hard disk operation when it is implicit. Or maybe
2509	/// a special media state for it to make it even more simple.
2510
2511	Assert (mHDData.isBackedUp());
2512
2513	/* will leave the lock before the potentially lengthy operation, so
2514	* protect with the special state */
2515	MachineState_T oldState = mData->mMachineState;
2516	setMachineState (MachineState_SettingUp);
2517
2518	alock.leave();
2519
2520	rc = hd->deleteStorageAndWait();
2521
2522	alock.enter();
2523
2524	setMachineState (oldState);
2525
2526	CheckComRCReturnRC(rc);
2527	}
2528
2529	mHDData.backup();
2530
2531	/* we cannot use erase (it) below because backup() above will create
2532	* a copy of the list and make this copy active, but the iterator
2533	* still refers to the original and is not valid for the copy */
2534	mHDData->mAttachments.remove (hda);
2535
2536	return S_OK;
2537	}
2538
2539	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
2540	{
2541	CheckComArgOutPointerValid(port);
2542	CheckComArgExpr (slot, slot < RT_ELEMENTS (mSerialPorts));
2543
2544	AutoCaller autoCaller(this);
2545	CheckComRCReturnRC(autoCaller.rc());
2546
2547	AutoReadLock alock(this);
2548
2549	mSerialPorts [slot].queryInterfaceTo(port);
2550
2551	return S_OK;
2552	}
2553
2554	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
2555	{
2556	CheckComArgOutPointerValid(port);
2557	CheckComArgExpr (slot, slot < RT_ELEMENTS (mParallelPorts));
2558
2559	AutoCaller autoCaller(this);
2560	CheckComRCReturnRC(autoCaller.rc());
2561
2562	AutoReadLock alock(this);
2563
2564	mParallelPorts [slot].queryInterfaceTo(port);
2565
2566	return S_OK;
2567	}
2568
2569	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
2570	{
2571	CheckComArgOutPointerValid(adapter);
2572	CheckComArgExpr (slot, slot < RT_ELEMENTS (mNetworkAdapters));
2573
2574	AutoCaller autoCaller(this);
2575	CheckComRCReturnRC(autoCaller.rc());
2576
2577	AutoReadLock alock(this);
2578
2579	mNetworkAdapters[slot].queryInterfaceTo(adapter);
2580
2581	return S_OK;
2582	}
2583
2584	STDMETHODIMP Machine::GetExtraDataKeys(ComSafeArrayOut(BSTR, aKeys))
2585	{
2586	if (ComSafeArrayOutIsNull(aKeys))
2587	return E_POINTER;
2588
2589	AutoCaller autoCaller (this);
2590	CheckComRCReturnRC (autoCaller.rc());
2591
2592	AutoReadLock alock (this);
2593
2594	com::SafeArray<BSTR> saKeys(mData->m_pMachineConfigFile->mapExtraDataItems.size());
2595	int i = 0;
2596	for (settings::ExtraDataItemsMap::const_iterator it = mData->m_pMachineConfigFile->mapExtraDataItems.begin();
2597	it != mData->m_pMachineConfigFile->mapExtraDataItems.end();
2598	++it, ++i)
2599	{
2600	const Utf8Str &strKey = it->first;
2601	strKey.cloneTo(&saKeys[i]);
2602	}
2603	saKeys.detachTo(ComSafeArrayOutArg(aKeys));
2604
2605	return S_OK;
2606	}
2607
2608	/**
2609	* @note Locks this object for reading.
2610	*/
2611	STDMETHODIMP Machine::GetExtraData(IN_BSTR aKey,
2612	BSTR *aValue)
2613	{
2614	CheckComArgNotNull(aKey);
2615	CheckComArgOutPointerValid(aValue);
2616
2617	AutoCaller autoCaller (this);
2618	CheckComRCReturnRC (autoCaller.rc());
2619
2620	/* start with nothing found */
2621	Bstr("").cloneTo(aValue);
2622
2623	AutoReadLock alock (this);
2624
2625	settings::ExtraDataItemsMap::const_iterator it = mData->m_pMachineConfigFile->mapExtraDataItems.find(Utf8Str(aKey));
2626	if (it != mData->m_pMachineConfigFile->mapExtraDataItems.end())
2627	{
2628	// found:
2629	const Utf8Str &strValue = it->second;
2630	strValue.cloneTo(aValue);
2631	}
2632
2633	return S_OK;
2634	}
2635
2636	/**
2637	* @note Locks mParent for writing + this object for writing.
2638	*/
2639	STDMETHODIMP Machine::SetExtraData(IN_BSTR aKey, IN_BSTR aValue)
2640	{
2641	CheckComArgNotNull(aKey);
2642
2643	AutoCaller autoCaller(this);
2644	CheckComRCReturnRC (autoCaller.rc());
2645
2646	Utf8Str strKey(aKey);
2647	Utf8Str strValue(aValue);
2648	Utf8Str strOldValue; // empty
2649
2650	// locking note: we only hold the read lock briefly to look up the old value,
2651	// then release it and call the onExtraCanChange callbacks. There is a small
2652	// chance of a race insofar as the callback might be called twice if two callers
2653	// change the same key at the same time, but that's a much better solution
2654	// than the deadlock we had here before. The actual changing of the extradata
2655	// is then performed under the write lock and race-free.
2656
2657	// look up the old value first; if nothing's changed then we need not do anything
2658	{
2659	AutoReadLock alock(this); // hold read lock only while looking up
2660	settings::ExtraDataItemsMap::const_iterator it = mData->m_pMachineConfigFile->mapExtraDataItems.find(strKey);
2661	if (it != mData->m_pMachineConfigFile->mapExtraDataItems.end())
2662	strOldValue = it->second;
2663	}
2664
2665	bool fChanged;
2666	if ((fChanged = (strOldValue != strValue)))
2667	{
2668	// ask for permission from all listeners outside the locks;
2669	// onExtraDataCanChange() only briefly requests the VirtualBox
2670	// lock to copy the list of callbacks to invoke
2671	Bstr error;
2672	Bstr bstrValue;
2673	if (aValue)
2674	bstrValue = aValue;
2675	else
2676	bstrValue = (const char *)"";
2677
2678	if (!mParent->onExtraDataCanChange(mData->mUuid, aKey, bstrValue, error))
2679	{
2680	const char *sep = error.isEmpty() ? "" : ": ";
2681	CBSTR err = error.isNull() ? (CBSTR) L"" : error.raw();
2682	LogWarningFunc(("Someone vetoed! Change refused%s%ls\n",
2683	sep, err));
2684	return setError(E_ACCESSDENIED,
2685	tr("Could not set extra data because someone refused the requested change of '%ls' to '%ls'%s%ls"),
2686	aKey,
2687	bstrValue.raw(),
2688	sep,
2689	err);
2690	}
2691
2692	// data is changing and change not vetoed: then write it out under the locks
2693
2694	// saveSettings() needs VirtualBox write lock
2695	AutoMultiWriteLock2 alock(mParent, this);
2696
2697	if (mType == IsSnapshotMachine)
2698	{
2699	HRESULT rc = checkStateDependency(MutableStateDep);
2700	CheckComRCReturnRC (rc);
2701	}
2702
2703	if (strValue.isEmpty())
2704	mData->m_pMachineConfigFile->mapExtraDataItems.erase(strKey);
2705	else
2706	mData->m_pMachineConfigFile->mapExtraDataItems[strKey] = strValue;
2707	// creates a new key if needed
2708
2709	/* save settings on success */
2710	HRESULT rc = saveSettings();
2711	CheckComRCReturnRC (rc);
2712	}
2713
2714	// fire notification outside the lock
2715	if (fChanged)
2716	mParent->onExtraDataChange(mData->mUuid, aKey, aValue);
2717
2718	return S_OK;
2719	}
2720
2721	STDMETHODIMP Machine::SaveSettings()
2722	{
2723	AutoCaller autoCaller(this);
2724	CheckComRCReturnRC(autoCaller.rc());
2725
2726	/* saveSettings() needs mParent lock */
2727	AutoMultiWriteLock2 alock(mParent, this);
2728
2729	/* when there was auto-conversion, we want to save the file even if
2730	* the VM is saved */
2731	HRESULT rc = checkStateDependency(MutableStateDep);
2732	CheckComRCReturnRC(rc);
2733
2734	/* the settings file path may never be null */
2735	ComAssertRet(!mData->m_strConfigFileFull.isEmpty(), E_FAIL);
2736
2737	/* save all VM data excluding snapshots */
2738	return saveSettings();
2739	}
2740
2741	STDMETHODIMP Machine::DiscardSettings()
2742	{
2743	AutoCaller autoCaller(this);
2744	CheckComRCReturnRC(autoCaller.rc());
2745
2746	AutoWriteLock alock(this);
2747
2748	HRESULT rc = checkStateDependency(MutableStateDep);
2749	CheckComRCReturnRC(rc);
2750
2751	/*
2752	* during this rollback, the session will be notified if data has
2753	* been actually changed
2754	*/
2755	rollback (true /* aNotify */);
2756
2757	return S_OK;
2758	}
2759
2760	STDMETHODIMP Machine::DeleteSettings()
2761	{
2762	AutoCaller autoCaller(this);
2763	CheckComRCReturnRC(autoCaller.rc());
2764
2765	AutoWriteLock alock(this);
2766
2767	HRESULT rc = checkStateDependency(MutableStateDep);
2768	CheckComRCReturnRC(rc);
2769
2770	if (mData->mRegistered)
2771	return setError(VBOX_E_INVALID_VM_STATE,
2772	tr("Cannot delete settings of a registered machine"));
2773
2774	/* delete the settings only when the file actually exists */
2775	if (mData->m_pMachineConfigFile->fileExists())
2776	{
2777	int vrc = RTFileDelete(mData->m_strConfigFileFull.c_str());
2778	if (RT_FAILURE(vrc))
2779	return setError(VBOX_E_IPRT_ERROR,
2780	tr("Could not delete the settings file '%s' (%Rrc)"),
2781	mData->m_strConfigFileFull.raw(),
2782	vrc);
2783
2784	/* delete the Logs folder, nothing important should be left
2785	* there (we don't check for errors because the user might have
2786	* some private files there that we don't want to delete) */
2787	Utf8Str logFolder;
2788	getLogFolder(logFolder);
2789	Assert(logFolder.length());
2790	if (RTDirExists(logFolder.c_str()))
2791	{
2792	/* Delete all VBox.log[.N] files from the Logs folder
2793	* (this must be in sync with the rotation logic in
2794	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2795	* files that may have been created by the GUI. */
2796	Utf8Str log = Utf8StrFmt("%s/VBox.log", logFolder.raw());
2797	RTFileDelete(log.c_str());
2798	log = Utf8StrFmt("%s/VBox.png", logFolder.raw());
2799	RTFileDelete(log.c_str());
2800	for (int i = 3; i >= 0; i--)
2801	{
2802	log = Utf8StrFmt("%s/VBox.log.%d", logFolder.raw(), i);
2803	RTFileDelete(log.c_str());
2804	log = Utf8StrFmt("%s/VBox.png.%d", logFolder.raw(), i);
2805	RTFileDelete(log.c_str());
2806	}
2807
2808	RTDirRemove(logFolder.c_str());
2809	}
2810
2811	/* delete the Snapshots folder, nothing important should be left
2812	* there (we don't check for errors because the user might have
2813	* some private files there that we don't want to delete) */
2814	Utf8Str snapshotFolder(mUserData->mSnapshotFolderFull);
2815	Assert(snapshotFolder.length());
2816	if (RTDirExists(snapshotFolder.c_str()))
2817	RTDirRemove(snapshotFolder.c_str());
2818
2819	/* delete the directory that contains the settings file, but only
2820	* if it matches the VM name (i.e. a structure created by default in
2821	* prepareSaveSettings()) */
2822	{
2823	Utf8Str settingsDir;
2824	if (isInOwnDir(&settingsDir))
2825	RTDirRemove(settingsDir.c_str());
2826	}
2827	}
2828
2829	return S_OK;
2830	}
2831
2832	STDMETHODIMP Machine::GetSnapshot (IN_BSTR aId, ISnapshot **aSnapshot)
2833	{
2834	CheckComArgOutPointerValid(aSnapshot);
2835
2836	AutoCaller autoCaller(this);
2837	CheckComRCReturnRC(autoCaller.rc());
2838
2839	AutoReadLock alock(this);
2840
2841	Guid id(aId);
2842	ComObjPtr<Snapshot> snapshot;
2843
2844	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2845	snapshot.queryInterfaceTo(aSnapshot);
2846
2847	return rc;
2848	}
2849
2850	STDMETHODIMP Machine::FindSnapshot (IN_BSTR aName, ISnapshot **aSnapshot)
2851	{
2852	CheckComArgNotNull (aName);
2853	CheckComArgOutPointerValid(aSnapshot);
2854
2855	AutoCaller autoCaller(this);
2856	CheckComRCReturnRC(autoCaller.rc());
2857
2858	AutoReadLock alock(this);
2859
2860	ComObjPtr<Snapshot> snapshot;
2861
2862	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2863	snapshot.queryInterfaceTo(aSnapshot);
2864
2865	return rc;
2866	}
2867
2868	STDMETHODIMP Machine::SetCurrentSnapshot (IN_BSTR /* aId */)
2869	{
2870	/// @todo (dmik) don't forget to set
2871	// mData->mCurrentStateModified to FALSE
2872
2873	return setError (E_NOTIMPL, "Not implemented");
2874	}
2875
2876	STDMETHODIMP Machine::CreateSharedFolder (IN_BSTR aName, IN_BSTR aHostPath, BOOL aWritable)
2877	{
2878	CheckComArgNotNull(aName);
2879	CheckComArgNotNull(aHostPath);
2880
2881	AutoCaller autoCaller(this);
2882	CheckComRCReturnRC(autoCaller.rc());
2883
2884	AutoWriteLock alock(this);
2885
2886	HRESULT rc = checkStateDependency(MutableStateDep);
2887	CheckComRCReturnRC(rc);
2888
2889	ComObjPtr<SharedFolder> sharedFolder;
2890	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2891	if (SUCCEEDED(rc))
2892	return setError(VBOX_E_OBJECT_IN_USE,
2893	tr("Shared folder named '%ls' already exists"),
2894	aName);
2895
2896	sharedFolder.createObject();
2897	rc = sharedFolder->init (machine(), aName, aHostPath, aWritable);
2898	CheckComRCReturnRC(rc);
2899
2900	mHWData.backup();
2901	mHWData->mSharedFolders.push_back (sharedFolder);
2902
2903	/* inform the direct session if any */
2904	alock.leave();
2905	onSharedFolderChange();
2906
2907	return S_OK;
2908	}
2909
2910	STDMETHODIMP Machine::RemoveSharedFolder (IN_BSTR aName)
2911	{
2912	CheckComArgNotNull (aName);
2913
2914	AutoCaller autoCaller(this);
2915	CheckComRCReturnRC(autoCaller.rc());
2916
2917	AutoWriteLock alock(this);
2918
2919	HRESULT rc = checkStateDependency(MutableStateDep);
2920	CheckComRCReturnRC(rc);
2921
2922	ComObjPtr<SharedFolder> sharedFolder;
2923	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2924	CheckComRCReturnRC(rc);
2925
2926	mHWData.backup();
2927	mHWData->mSharedFolders.remove (sharedFolder);
2928
2929	/* inform the direct session if any */
2930	alock.leave();
2931	onSharedFolderChange();
2932
2933	return S_OK;
2934	}
2935
2936	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2937	{
2938	CheckComArgOutPointerValid(aCanShow);
2939
2940	/* start with No */
2941	*aCanShow = FALSE;
2942
2943	AutoCaller autoCaller(this);
2944	AssertComRCReturnRC(autoCaller.rc());
2945
2946	ComPtr<IInternalSessionControl> directControl;
2947	{
2948	AutoReadLock alock(this);
2949
2950	if (mData->mSession.mState != SessionState_Open)
2951	return setError(VBOX_E_INVALID_VM_STATE,
2952	tr("Machine session is not open (session state: %d)"),
2953	mData->mSession.mState);
2954
2955	directControl = mData->mSession.mDirectControl;
2956	}
2957
2958	/* ignore calls made after #OnSessionEnd() is called */
2959	if (!directControl)
2960	return S_OK;
2961
2962	ULONG64 dummy;
2963	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2964	}
2965
2966	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2967	{
2968	CheckComArgOutPointerValid(aWinId);
2969
2970	AutoCaller autoCaller(this);
2971	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2972
2973	ComPtr<IInternalSessionControl> directControl;
2974	{
2975	AutoReadLock alock(this);
2976
2977	if (mData->mSession.mState != SessionState_Open)
2978	return setError(E_FAIL,
2979	tr("Machine session is not open (session state: %d)"),
2980	mData->mSession.mState);
2981
2982	directControl = mData->mSession.mDirectControl;
2983	}
2984
2985	/* ignore calls made after #OnSessionEnd() is called */
2986	if (!directControl)
2987	return S_OK;
2988
2989	BOOL dummy;
2990	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2991	}
2992
2993	STDMETHODIMP Machine::GetGuestProperty(IN_BSTR aName,
2994	BSTR *aValue,
2995	ULONG64 *aTimestamp,
2996	BSTR *aFlags)
2997	{
2998	#if !defined (VBOX_WITH_GUEST_PROPS)
2999	ReturnComNotImplemented();
3000	#else
3001	CheckComArgNotNull(aName);
3002	CheckComArgOutPointerValid(aValue);
3003	CheckComArgOutPointerValid(aTimestamp);
3004	CheckComArgOutPointerValid(aFlags);
3005
3006	AutoCaller autoCaller(this);
3007	CheckComRCReturnRC(autoCaller.rc());
3008
3009	AutoReadLock alock(this);
3010
3011	using namespace guestProp;
3012	HRESULT rc = E_FAIL;
3013
3014	Utf8Str strName(aName);
3015
3016	if (!mHWData->mPropertyServiceActive)
3017	{
3018	bool found = false;
3019	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
3020	(it != mHWData->mGuestProperties.end()) && !found;
3021	++it)
3022	{
3023	if (it->strName == strName)
3024	{
3025	char szFlags[MAX_FLAGS_LEN + 1];
3026	it->strValue.cloneTo(aValue);
3027	*aTimestamp = it->mTimestamp;
3028	writeFlags(it->mFlags, szFlags);
3029	Bstr(szFlags).cloneTo(aFlags);
3030	found = true;
3031	}
3032	}
3033	rc = S_OK;
3034	}
3035	else
3036	{
3037	ComPtr<IInternalSessionControl> directControl =
3038	mData->mSession.mDirectControl;
3039
3040	/* just be on the safe side when calling another process */
3041	alock.unlock();
3042
3043	/* fail if we were called after #OnSessionEnd() is called. This is a
3044	* silly race condition. */
3045
3046	if (!directControl)
3047	rc = E_FAIL;
3048	else
3049	rc = directControl->AccessGuestProperty (aName, NULL, NULL,
3050	false /* isSetter */,
3051	aValue, aTimestamp, aFlags);
3052	}
3053	return rc;
3054	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3055	}
3056
3057	STDMETHODIMP Machine::GetGuestPropertyValue (IN_BSTR aName, BSTR *aValue)
3058	{
3059	ULONG64 dummyTimestamp;
3060	BSTR dummyFlags;
3061	return GetGuestProperty (aName, aValue, &dummyTimestamp, &dummyFlags);
3062	}
3063
3064	STDMETHODIMP Machine::GetGuestPropertyTimestamp (IN_BSTR aName, ULONG64 *aTimestamp)
3065	{
3066	BSTR dummyValue;
3067	BSTR dummyFlags;
3068	return GetGuestProperty (aName, &dummyValue, aTimestamp, &dummyFlags);
3069	}
3070
3071	STDMETHODIMP Machine::SetGuestProperty(IN_BSTR aName,
3072	IN_BSTR aValue,
3073	IN_BSTR aFlags)
3074	{
3075	#if !defined (VBOX_WITH_GUEST_PROPS)
3076	ReturnComNotImplemented();
3077	#else
3078	using namespace guestProp;
3079
3080	CheckComArgNotNull(aName);
3081	CheckComArgNotNull(aValue);
3082	if ((aFlags != NULL) && !VALID_PTR (aFlags))
3083	return E_INVALIDARG;
3084
3085	HRESULT rc = S_OK;
3086
3087	try
3088	{
3089	Utf8Str utf8Name(aName);
3090	Utf8Str utf8Flags(aFlags);
3091	Utf8Str utf8Patterns(mHWData->mGuestPropertyNotificationPatterns);
3092
3093	bool matchAll = false;
3094	if (utf8Patterns.isEmpty())
3095	matchAll = true;
3096
3097	uint32_t fFlags = NILFLAG;
3098	if ( (aFlags != NULL)
3099	&& RT_FAILURE(validateFlags (utf8Flags.raw(), &fFlags))
3100	)
3101	return setError(E_INVALIDARG,
3102	tr("Invalid flag values: '%ls'"),
3103	aFlags);
3104
3105	AutoCaller autoCaller(this);
3106	CheckComRCReturnRC(autoCaller.rc());
3107
3108	AutoWriteLock alock(this);
3109
3110	rc = checkStateDependency(MutableStateDep);
3111	CheckComRCReturnRC(rc);
3112
3113	rc = S_OK;
3114
3115	if (!mHWData->mPropertyServiceActive)
3116	{
3117	bool found = false;
3118	HWData::GuestProperty property;
3119	property.mFlags = NILFLAG;
3120	if (fFlags & TRANSIENT)
3121	rc = setError(VBOX_E_INVALID_OBJECT_STATE,
3122	tr("Cannot set a transient property when the machine is not running"));
3123
3124	if (SUCCEEDED(rc))
3125	{
3126	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3127	it != mHWData->mGuestProperties.end();
3128	++it)
3129	if (it->strName == utf8Name)
3130	{
3131	property = *it;
3132	if (it->mFlags & (RDONLYHOST))
3133	rc = setError(E_ACCESSDENIED,
3134	tr("The property '%ls' cannot be changed by the host"),
3135	aName);
3136	else
3137	{
3138	mHWData.backup();
3139	/* The backup() operation invalidates our iterator, so
3140	* get a new one. */
3141	for (it = mHWData->mGuestProperties.begin();
3142	it->strName != utf8Name;
3143	++it)
3144	;
3145	mHWData->mGuestProperties.erase (it);
3146	}
3147	found = true;
3148	break;
3149	}
3150	}
3151	if (found && SUCCEEDED(rc))
3152	{
3153	if (*aValue)
3154	{
3155	RTTIMESPEC time;
3156	property.strValue = aValue;
3157	property.mTimestamp = RTTimeSpecGetNano(RTTimeNow(&time));
3158	if (aFlags != NULL)
3159	property.mFlags = fFlags;
3160	mHWData->mGuestProperties.push_back (property);
3161	}
3162	}
3163	else if (SUCCEEDED(rc) && *aValue)
3164	{
3165	RTTIMESPEC time;
3166	mHWData.backup();
3167	property.strName = aName;
3168	property.strValue = aValue;
3169	property.mTimestamp = RTTimeSpecGetNano(RTTimeNow(&time));
3170	property.mFlags = fFlags;
3171	mHWData->mGuestProperties.push_back (property);
3172	}
3173	if ( SUCCEEDED(rc)
3174	&& ( matchAll
3175	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
3176	utf8Name.raw(), RTSTR_MAX, NULL)
3177	)
3178	)
3179	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
3180	}
3181	else
3182	{
3183	ComPtr<IInternalSessionControl> directControl =
3184	mData->mSession.mDirectControl;
3185
3186	/* just be on the safe side when calling another process */
3187	alock.leave();
3188
3189	BSTR dummy = NULL;
3190	ULONG64 dummy64;
3191	if (!directControl)
3192	rc = E_FAIL;
3193	else
3194	rc = directControl->AccessGuestProperty(aName, aValue, aFlags,
3195	true /* isSetter */,
3196	&dummy, &dummy64, &dummy);
3197	}
3198	}
3199	catch (std::bad_alloc &)
3200	{
3201	rc = E_OUTOFMEMORY;
3202	}
3203
3204	return rc;
3205	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3206	}
3207
3208	STDMETHODIMP Machine::SetGuestPropertyValue (IN_BSTR aName, IN_BSTR aValue)
3209	{
3210	return SetGuestProperty (aName, aValue, NULL);
3211	}
3212
3213	STDMETHODIMP Machine::EnumerateGuestProperties(IN_BSTR aPatterns,
3214	ComSafeArrayOut(BSTR, aNames),
3215	ComSafeArrayOut(BSTR, aValues),
3216	ComSafeArrayOut(ULONG64, aTimestamps),
3217	ComSafeArrayOut(BSTR, aFlags))
3218	{
3219	#if !defined (VBOX_WITH_GUEST_PROPS)
3220	ReturnComNotImplemented();
3221	#else
3222	if (!VALID_PTR (aPatterns) && (aPatterns != NULL))
3223	return E_POINTER;
3224
3225	CheckComArgOutSafeArrayPointerValid(aNames);
3226	CheckComArgOutSafeArrayPointerValid(aValues);
3227	CheckComArgOutSafeArrayPointerValid(aTimestamps);
3228	CheckComArgOutSafeArrayPointerValid(aFlags);
3229
3230	AutoCaller autoCaller(this);
3231	CheckComRCReturnRC(autoCaller.rc());
3232
3233	AutoReadLock alock(this);
3234
3235	using namespace guestProp;
3236	HRESULT rc = E_FAIL;
3237
3238	Utf8Str strPatterns(aPatterns);
3239
3240	bool matchAll = false;
3241	if ((NULL == aPatterns) \|\| (0 == aPatterns[0]))
3242	matchAll = true;
3243	if (!mHWData->mPropertyServiceActive)
3244	{
3245
3246	/*
3247	* Look for matching patterns and build up a list.
3248	*/
3249	HWData::GuestPropertyList propList;
3250	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3251	it != mHWData->mGuestProperties.end();
3252	++it)
3253	if ( matchAll
3254	\|\| RTStrSimplePatternMultiMatch(strPatterns.raw(),
3255	RTSTR_MAX,
3256	it->strName.raw(),
3257	RTSTR_MAX, NULL)
3258	)
3259	propList.push_back(*it);
3260
3261	/*
3262	* And build up the arrays for returning the property information.
3263	*/
3264	size_t cEntries = propList.size();
3265	SafeArray<BSTR> names (cEntries);
3266	SafeArray<BSTR> values (cEntries);
3267	SafeArray<ULONG64> timestamps (cEntries);
3268	SafeArray<BSTR> flags (cEntries);
3269	size_t iProp = 0;
3270	for (HWData::GuestPropertyList::iterator it = propList.begin();
3271	it != propList.end();
3272	++it)
3273	{
3274	char szFlags[MAX_FLAGS_LEN + 1];
3275	it->strName.cloneTo(&names[iProp]);
3276	it->strValue.cloneTo(&values[iProp]);
3277	timestamps[iProp] = it->mTimestamp;
3278	writeFlags(it->mFlags, szFlags);
3279	Bstr(szFlags).cloneTo(&flags[iProp]);
3280	++iProp;
3281	}
3282	names.detachTo(ComSafeArrayOutArg(aNames));
3283	values.detachTo(ComSafeArrayOutArg(aValues));
3284	timestamps.detachTo(ComSafeArrayOutArg(aTimestamps));
3285	flags.detachTo(ComSafeArrayOutArg(aFlags));
3286	rc = S_OK;
3287	}
3288	else
3289	{
3290	ComPtr<IInternalSessionControl> directControl = mData->mSession.mDirectControl;
3291
3292	/* just be on the safe side when calling another process */
3293	alock.unlock();
3294
3295	if (!directControl)
3296	rc = E_FAIL;
3297	else
3298	rc = directControl->EnumerateGuestProperties(aPatterns,
3299	ComSafeArrayOutArg(aNames),
3300	ComSafeArrayOutArg(aValues),
3301	ComSafeArrayOutArg(aTimestamps),
3302	ComSafeArrayOutArg(aFlags));
3303	}
3304	return rc;
3305	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3306	}
3307
3308	STDMETHODIMP Machine:: GetHardDiskAttachmentsOfController(IN_BSTR aName,
3309	ComSafeArrayOut(IHardDiskAttachment*, aAttachments))
3310	{
3311	HDData::AttachmentList atts;
3312
3313	HRESULT rc = getHardDiskAttachmentsOfController(aName, atts);
3314	CheckComRCReturnRC(rc);
3315
3316	SafeIfaceArray<IHardDiskAttachment> attachments (atts);
3317	attachments.detachTo(ComSafeArrayOutArg(aAttachments));
3318
3319	return S_OK;
3320	}
3321
3322	STDMETHODIMP Machine::AddStorageController(IN_BSTR aName,
3323	StorageBus_T aConnectionType,
3324	IStorageController **controller)
3325	{
3326	CheckComArgStrNotEmptyOrNull(aName);
3327
3328	if ( (aConnectionType <= StorageBus_Null)
3329	\|\| (aConnectionType > StorageBus_SCSI))
3330	return setError (E_INVALIDARG,
3331	tr ("Invalid connection type: %d"),
3332	aConnectionType);
3333
3334	AutoCaller autoCaller(this);
3335	CheckComRCReturnRC(autoCaller.rc());
3336
3337	AutoWriteLock alock(this);
3338
3339	HRESULT rc = checkStateDependency(MutableStateDep);
3340	CheckComRCReturnRC(rc);
3341
3342	/* try to find one with the name first. */
3343	ComObjPtr<StorageController> ctrl;
3344
3345	rc = getStorageControllerByName (aName, ctrl, false /* aSetError */);
3346	if (SUCCEEDED(rc))
3347	return setError (VBOX_E_OBJECT_IN_USE,
3348	tr ("Storage controller named '%ls' already exists"), aName);
3349
3350	ctrl.createObject();
3351	rc = ctrl->init (this, aName, aConnectionType);
3352	CheckComRCReturnRC(rc);
3353
3354	mStorageControllers.backup();
3355	mStorageControllers->push_back (ctrl);
3356
3357	ctrl.queryInterfaceTo(controller);
3358
3359	/* inform the direct session if any */
3360	alock.leave();
3361	onStorageControllerChange();
3362
3363	return S_OK;
3364	}
3365
3366	STDMETHODIMP Machine::GetStorageControllerByName(IN_BSTR aName,
3367	IStorageController **aStorageController)
3368	{
3369	CheckComArgStrNotEmptyOrNull(aName);
3370
3371	AutoCaller autoCaller(this);
3372	CheckComRCReturnRC(autoCaller.rc());
3373
3374	AutoReadLock alock(this);
3375
3376	ComObjPtr<StorageController> ctrl;
3377
3378	HRESULT rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3379	if (SUCCEEDED(rc))
3380	ctrl.queryInterfaceTo(aStorageController);
3381
3382	return rc;
3383	}
3384
3385	STDMETHODIMP Machine::
3386	RemoveStorageController(IN_BSTR aName)
3387	{
3388	CheckComArgStrNotEmptyOrNull(aName);
3389
3390	AutoCaller autoCaller(this);
3391	CheckComRCReturnRC(autoCaller.rc());
3392
3393	AutoWriteLock alock(this);
3394
3395	HRESULT rc = checkStateDependency(MutableStateDep);
3396	CheckComRCReturnRC(rc);
3397
3398	ComObjPtr<StorageController> ctrl;
3399	rc = getStorageControllerByName (aName, ctrl, true /* aSetError */);
3400	CheckComRCReturnRC(rc);
3401
3402	/* We can remove the controller only if there is no device attached. */
3403	/* check if the device slot is already busy */
3404	for (HDData::AttachmentList::const_iterator
3405	it = mHDData->mAttachments.begin();
3406	it != mHDData->mAttachments.end();
3407	++ it)
3408	{
3409	if (it != mHDData->mAttachments.end())
3410	{
3411	if ((*it)->controller() == aName)
3412	return setError(VBOX_E_OBJECT_IN_USE,
3413	tr("Storage controller named '%ls' has still devices attached"),
3414	aName);
3415	}
3416	}
3417
3418	/* We can remove it now. */
3419	mStorageControllers.backup();
3420
3421	ctrl->unshare();
3422
3423	mStorageControllers->remove (ctrl);
3424
3425	/* inform the direct session if any */
3426	alock.leave();
3427	onStorageControllerChange();
3428
3429	return S_OK;
3430	}
3431
3432	// public methods for internal purposes
3433	/////////////////////////////////////////////////////////////////////////////
3434
3435	/**
3436	* Saves the registry entry of this machine to the given configuration node.
3437	*
3438	* @param aEntryNode Node to save the registry entry to.
3439	*
3440	* @note locks this object for reading.
3441	*/
3442	HRESULT Machine::saveRegistryEntry(settings::MachineRegistryEntry &data)
3443	{
3444	AutoLimitedCaller autoCaller(this);
3445	AssertComRCReturnRC(autoCaller.rc());
3446
3447	AutoReadLock alock(this);
3448
3449	data.uuid = mData->mUuid;
3450	data.strSettingsFile = mData->m_strConfigFile;
3451
3452	return S_OK;
3453	}
3454
3455	/**
3456	* Calculates the absolute path of the given path taking the directory of the
3457	* machine settings file as the current directory.
3458	*
3459	* @param aPath Path to calculate the absolute path for.
3460	* @param aResult Where to put the result (used only on success, can be the
3461	* same Utf8Str instance as passed in @a aPath).
3462	* @return IPRT result.
3463	*
3464	* @note Locks this object for reading.
3465	*/
3466	int Machine::calculateFullPath(const Utf8Str &strPath, Utf8Str &aResult)
3467	{
3468	AutoCaller autoCaller(this);
3469	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3470
3471	AutoReadLock alock(this);
3472
3473	AssertReturn (!mData->m_strConfigFileFull.isEmpty(), VERR_GENERAL_FAILURE);
3474
3475	Utf8Str strSettingsDir = mData->m_strConfigFileFull;
3476
3477	strSettingsDir.stripFilename();
3478	char folder[RTPATH_MAX];
3479	int vrc = RTPathAbsEx(strSettingsDir.c_str(), strPath.c_str(), folder, sizeof(folder));
3480	if (RT_SUCCESS(vrc))
3481	aResult = folder;
3482
3483	return vrc;
3484	}
3485
3486	/**
3487	* Tries to calculate the relative path of the given absolute path using the
3488	* directory of the machine settings file as the base directory.
3489	*
3490	* @param aPath Absolute path to calculate the relative path for.
3491	* @param aResult Where to put the result (used only when it's possible to
3492	* make a relative path from the given absolute path; otherwise
3493	* left untouched).
3494	*
3495	* @note Locks this object for reading.
3496	*/
3497	void Machine::calculateRelativePath(const Utf8Str &strPath, Utf8Str &aResult)
3498	{
3499	AutoCaller autoCaller(this);
3500	AssertComRCReturn (autoCaller.rc(), (void) 0);
3501
3502	AutoReadLock alock(this);
3503
3504	AssertReturnVoid (!mData->m_strConfigFileFull.isEmpty());
3505
3506	Utf8Str settingsDir = mData->m_strConfigFileFull;
3507
3508	settingsDir.stripFilename();
3509	if (RTPathStartsWith(strPath.c_str(), settingsDir.c_str()))
3510	{
3511	/* when assigning, we create a separate Utf8Str instance because both
3512	* aPath and aResult can point to the same memory location when this
3513	* func is called (if we just do aResult = aPath, aResult will be freed
3514	* first, and since its the same as aPath, an attempt to copy garbage
3515	* will be made. */
3516	aResult = Utf8Str(strPath.c_str() + settingsDir.length() + 1);
3517	}
3518	}
3519
3520	/**
3521	* Returns the full path to the machine's log folder in the
3522	* \a aLogFolder argument.
3523	*/
3524	void Machine::getLogFolder (Utf8Str &aLogFolder)
3525	{
3526	AutoCaller autoCaller(this);
3527	AssertComRCReturnVoid (autoCaller.rc());
3528
3529	AutoReadLock alock(this);
3530
3531	Utf8Str settingsDir;
3532	if (isInOwnDir (&settingsDir))
3533	{
3534	/* Log folder is <Machines>/<VM_Name>/Logs */
3535	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
3536	}
3537	else
3538	{
3539	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
3540	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
3541	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
3542	RTPATH_DELIMITER);
3543	}
3544	}
3545
3546	/**
3547	* @note Locks this object for writing, calls the client process (outside the
3548	* lock).
3549	*/
3550	HRESULT Machine::openSession(IInternalSessionControl *aControl)
3551	{
3552	LogFlowThisFuncEnter();
3553
3554	AssertReturn(aControl, E_FAIL);
3555
3556	AutoCaller autoCaller(this);
3557	CheckComRCReturnRC(autoCaller.rc());
3558
3559	AutoWriteLock alock(this);
3560
3561	if (!mData->mRegistered)
3562	return setError(E_UNEXPECTED,
3563	tr("The machine '%ls' is not registered"),
3564	mUserData->mName.raw());
3565
3566	LogFlowThisFunc(("mSession.mState=%d\n", mData->mSession.mState));
3567
3568	if (mData->mSession.mState == SessionState_Open \|\|
3569	mData->mSession.mState == SessionState_Closing)
3570	return setError(VBOX_E_INVALID_OBJECT_STATE,
3571	tr("A session for the machine '%ls' is currently open (or being closed)"),
3572	mUserData->mName.raw());
3573
3574	/* may not be busy */
3575	AssertReturn(!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3576
3577	/* get the session PID */
3578	RTPROCESS pid = NIL_RTPROCESS;
3579	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
3580	aControl->GetPID ((ULONG *) &pid);
3581	Assert (pid != NIL_RTPROCESS);
3582
3583	if (mData->mSession.mState == SessionState_Spawning)
3584	{
3585	/* This machine is awaiting for a spawning session to be opened, so
3586	* reject any other open attempts from processes other than one
3587	* started by #openRemoteSession(). */
3588
3589	LogFlowThisFunc(("mSession.mPid=%d(0x%x)\n",
3590	mData->mSession.mPid, mData->mSession.mPid));
3591	LogFlowThisFunc(("session.pid=%d(0x%x)\n", pid, pid));
3592
3593	if (mData->mSession.mPid != pid)
3594	return setError(E_ACCESSDENIED,
3595	tr("An unexpected process (PID=0x%08X) has tried to open a direct "
3596	"session with the machine named '%ls', while only a process "
3597	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
3598	pid, mUserData->mName.raw(), mData->mSession.mPid);
3599	}
3600
3601	/* create a SessionMachine object */
3602	ComObjPtr<SessionMachine> sessionMachine;
3603	sessionMachine.createObject();
3604	HRESULT rc = sessionMachine->init (this);
3605	AssertComRC (rc);
3606
3607	/* NOTE: doing return from this function after this point but
3608	* before the end is forbidden since it may call SessionMachine::uninit()
3609	* (through the ComObjPtr's destructor) which requests the VirtualBox write
3610	* lock while still holding the Machine lock in alock so that a deadlock
3611	* is possible due to the wrong lock order. */
3612
3613	if (SUCCEEDED(rc))
3614	{
3615	#ifdef VBOX_WITH_RESOURCE_USAGE_API
3616	registerMetrics (mParent->performanceCollector(), this, pid);
3617	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
3618
3619	/*
3620	* Set the session state to Spawning to protect against subsequent
3621	* attempts to open a session and to unregister the machine after
3622	* we leave the lock.
3623	*/
3624	SessionState_T origState = mData->mSession.mState;
3625	mData->mSession.mState = SessionState_Spawning;
3626
3627	/*
3628	* Leave the lock before calling the client process -- it will call
3629	* Machine/SessionMachine methods. Leaving the lock here is quite safe
3630	* because the state is Spawning, so that openRemotesession() and
3631	* openExistingSession() calls will fail. This method, called before we
3632	* enter the lock again, will fail because of the wrong PID.
3633	*
3634	* Note that mData->mSession.mRemoteControls accessed outside
3635	* the lock may not be modified when state is Spawning, so it's safe.
3636	*/
3637	alock.leave();
3638
3639	LogFlowThisFunc(("Calling AssignMachine()...\n"));
3640	rc = aControl->AssignMachine (sessionMachine);
3641	LogFlowThisFunc(("AssignMachine() returned %08X\n", rc));
3642
3643	/* The failure may occur w/o any error info (from RPC), so provide one */
3644	if (FAILED (rc))
3645	setError (VBOX_E_VM_ERROR,
3646	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3647
3648	if (SUCCEEDED(rc) && origState == SessionState_Spawning)
3649	{
3650	/* complete the remote session initialization */
3651
3652	/* get the console from the direct session */
3653	ComPtr<IConsole> console;
3654	rc = aControl->GetRemoteConsole (console.asOutParam());
3655	ComAssertComRC (rc);
3656
3657	if (SUCCEEDED(rc) && !console)
3658	{
3659	ComAssert (!!console);
3660	rc = E_FAIL;
3661	}
3662
3663	/* assign machine & console to the remote session */
3664	if (SUCCEEDED(rc))
3665	{
3666	/*
3667	* after openRemoteSession(), the first and the only
3668	* entry in remoteControls is that remote session
3669	*/
3670	LogFlowThisFunc(("Calling AssignRemoteMachine()...\n"));
3671	rc = mData->mSession.mRemoteControls.front()->
3672	AssignRemoteMachine (sessionMachine, console);
3673	LogFlowThisFunc(("AssignRemoteMachine() returned %08X\n", rc));
3674
3675	/* The failure may occur w/o any error info (from RPC), so provide one */
3676	if (FAILED(rc))
3677	setError(VBOX_E_VM_ERROR,
3678	tr("Failed to assign the machine to the remote session (%Rrc)"), rc);
3679	}
3680
3681	if (FAILED(rc))
3682	aControl->Uninitialize();
3683	}
3684
3685	/* enter the lock again */
3686	alock.enter();
3687
3688	/* Restore the session state */
3689	mData->mSession.mState = origState;
3690	}
3691
3692	/* finalize spawning anyway (this is why we don't return on errors above) */
3693	if (mData->mSession.mState == SessionState_Spawning)
3694	{
3695	/* Note that the progress object is finalized later */
3696
3697	/* We don't reset mSession.mPid here because it is necessary for
3698	* SessionMachine::uninit() to reap the child process later. */
3699
3700	if (FAILED(rc))
3701	{
3702	/* Close the remote session, remove the remote control from the list
3703	* and reset session state to Closed (@note keep the code in sync
3704	* with the relevant part in openSession()). */
3705
3706	Assert (mData->mSession.mRemoteControls.size() == 1);
3707	if (mData->mSession.mRemoteControls.size() == 1)
3708	{
3709	ErrorInfoKeeper eik;
3710	mData->mSession.mRemoteControls.front()->Uninitialize();
3711	}
3712
3713	mData->mSession.mRemoteControls.clear();
3714	mData->mSession.mState = SessionState_Closed;
3715	}
3716	}
3717	else
3718	{
3719	/* memorize PID of the directly opened session */
3720	if (SUCCEEDED(rc))
3721	mData->mSession.mPid = pid;
3722	}
3723
3724	if (SUCCEEDED(rc))
3725	{
3726	/* memorize the direct session control and cache IUnknown for it */
3727	mData->mSession.mDirectControl = aControl;
3728	mData->mSession.mState = SessionState_Open;
3729	/* associate the SessionMachine with this Machine */
3730	mData->mSession.mMachine = sessionMachine;
3731
3732	/* request an IUnknown pointer early from the remote party for later
3733	* identity checks (it will be internally cached within mDirectControl
3734	* at least on XPCOM) */
3735	ComPtr<IUnknown> unk = mData->mSession.mDirectControl;
3736	NOREF (unk);
3737	}
3738
3739	if (mData->mSession.mProgress)
3740	{
3741	/* finalize the progress after setting the state, for consistency */
3742	mData->mSession.mProgress->notifyComplete (rc);
3743	mData->mSession.mProgress.setNull();
3744	}
3745
3746	/* Leave the lock since SessionMachine::uninit() locks VirtualBox which
3747	* would break the lock order */
3748	alock.leave();
3749
3750	/* uninitialize the created session machine on failure */
3751	if (FAILED(rc))
3752	sessionMachine->uninit();
3753
3754	LogFlowThisFunc(("rc=%08X\n", rc));
3755	LogFlowThisFuncLeave();
3756	return rc;
3757	}
3758
3759	/**
3760	* @note Locks this object for writing, calls the client process
3761	* (inside the lock).
3762	*/
3763	HRESULT Machine::openRemoteSession(IInternalSessionControl *aControl,
3764	IN_BSTR aType,
3765	IN_BSTR aEnvironment,
3766	Progress *aProgress)
3767	{
3768	LogFlowThisFuncEnter();
3769
3770	AssertReturn(aControl, E_FAIL);
3771	AssertReturn(aProgress, E_FAIL);
3772
3773	AutoCaller autoCaller(this);
3774	CheckComRCReturnRC(autoCaller.rc());
3775
3776	AutoWriteLock alock(this);
3777
3778	if (!mData->mRegistered)
3779	return setError(E_UNEXPECTED,
3780	tr("The machine '%ls' is not registered"),
3781	mUserData->mName.raw());
3782
3783	LogFlowThisFunc(("mSession.mState=%d\n", mData->mSession.mState));
3784
3785	if (mData->mSession.mState == SessionState_Open \|\|
3786	mData->mSession.mState == SessionState_Spawning \|\|
3787	mData->mSession.mState == SessionState_Closing)
3788	return setError(VBOX_E_INVALID_OBJECT_STATE,
3789	tr("A session for the machine '%ls' is currently open (or being opened or closed)"),
3790	mUserData->mName.raw());
3791
3792	/* may not be busy */
3793	AssertReturn(!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3794
3795	/* get the path to the executable */
3796	char szPath[RTPATH_MAX];
3797	RTPathAppPrivateArch(szPath, RTPATH_MAX);
3798	size_t sz = strlen(szPath);
3799	szPath[sz++] = RTPATH_DELIMITER;
3800	szPath[sz] = 0;
3801	char *cmd = szPath + sz;
3802	sz = RTPATH_MAX - sz;
3803
3804	int vrc = VINF_SUCCESS;
3805	RTPROCESS pid = NIL_RTPROCESS;
3806
3807	RTENV env = RTENV_DEFAULT;
3808
3809	if (aEnvironment != NULL && *aEnvironment)
3810	{
3811	char *newEnvStr = NULL;
3812
3813	do
3814	{
3815	/* clone the current environment */
3816	int vrc2 = RTEnvClone(&env, RTENV_DEFAULT);
3817	AssertRCBreakStmt(vrc2, vrc = vrc2);
3818
3819	newEnvStr = RTStrDup(Utf8Str(aEnvironment).c_str());
3820	AssertPtrBreakStmt(newEnvStr, vrc = vrc2);
3821
3822	/* put new variables to the environment
3823	* (ignore empty variable names here since RTEnv API
3824	* intentionally doesn't do that) */
3825	char *var = newEnvStr;
3826	for (char p = newEnvStr; p; ++ p)
3827	{
3828	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3829	{
3830	*p = '\0';
3831	if (*var)
3832	{
3833	char *val = strchr (var, '=');
3834	if (val)
3835	{
3836	*val++ = '\0';
3837	vrc2 = RTEnvSetEx (env, var, val);
3838	}
3839	else
3840	vrc2 = RTEnvUnsetEx (env, var);
3841	if (RT_FAILURE(vrc2))
3842	break;
3843	}
3844	var = p + 1;
3845	}
3846	}
3847	if (RT_SUCCESS(vrc2) && *var)
3848	vrc2 = RTEnvPutEx (env, var);
3849
3850	AssertRCBreakStmt (vrc2, vrc = vrc2);
3851	}
3852	while (0);
3853
3854	if (newEnvStr != NULL)
3855	RTStrFree(newEnvStr);
3856	}
3857
3858	Bstr type (aType);
3859
3860	/* Qt is default */
3861	#ifdef VBOX_WITH_QTGUI
3862	if (type == "gui" \|\| type == "GUI/Qt")
3863	{
3864	# ifdef RT_OS_DARWIN /* Avoid Launch Services confusing this with the selector by using a helper app. */
3865	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3866	# else
3867	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3868	# endif
3869	Assert (sz >= sizeof (VirtualBox_exe));
3870	strcpy (cmd, VirtualBox_exe);
3871
3872	Utf8Str idStr = mData->mUuid.toString();
3873	# ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3874	const char * args[] = {szPath, "--startvm", idStr.c_str(), 0 };
3875	# else
3876	Utf8Str name = mUserData->mName;
3877	const char * args[] = {szPath, "--comment", name.c_str(), "--startvm", idStr.c_str(), 0 };
3878	# endif
3879	vrc = RTProcCreate(szPath, args, env, 0, &pid);
3880	}
3881	#else /* !VBOX_WITH_QTGUI */
3882	if (0)
3883	;
3884	#endif /* VBOX_WITH_QTGUI */
3885
3886	else
3887
3888	#ifdef VBOX_WITH_VBOXSDL
3889	if (type == "sdl" \|\| type == "GUI/SDL")
3890	{
3891	const char VBoxSDL_exe[] = "VBoxSDL" HOSTSUFF_EXE;
3892	Assert (sz >= sizeof (VBoxSDL_exe));
3893	strcpy (cmd, VBoxSDL_exe);
3894
3895	Utf8Str idStr = mData->mUuid.toString();
3896	# ifdef RT_OS_WINDOWS
3897	const char * args[] = {szPath, "--startvm", idStr.c_str(), 0 };
3898	# else
3899	Utf8Str name = mUserData->mName;
3900	const char * args[] = {szPath, "--comment", name.c_str(), "--startvm", idStr.c_str(), 0 };
3901	# endif
3902	vrc = RTProcCreate(szPath, args, env, 0, &pid);
3903	}
3904	#else /* !VBOX_WITH_VBOXSDL */
3905	if (0)
3906	;
3907	#endif /* !VBOX_WITH_VBOXSDL */
3908
3909	else
3910
3911	#ifdef VBOX_WITH_HEADLESS
3912	if ( type == "headless"
3913	\|\| type == "capture"
3914	#ifdef VBOX_WITH_VRDP
3915	\|\| type == "vrdp"
3916	#endif
3917	)
3918	{
3919	const char VBoxHeadless_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3920	Assert (sz >= sizeof (VBoxHeadless_exe));
3921	strcpy (cmd, VBoxHeadless_exe);
3922
3923	Utf8Str idStr = mData->mUuid.toString();
3924	/* Leave space for 2 args, as "headless" needs --vrdp off on non-OSE. */
3925	# ifdef RT_OS_WINDOWS
3926	const char * args[] = {szPath, "--startvm", idStr.c_str(), 0, 0, 0 };
3927	# else
3928	Utf8Str name = mUserData->mName;
3929	const char * args[] ={szPath, "--comment", name.c_str(), "--startvm", idStr.c_str(), 0, 0, 0 };
3930	# endif
3931	#ifdef VBOX_WITH_VRDP
3932	if (type == "headless")
3933	{
3934	unsigned pos = RT_ELEMENTS(args) - 3;
3935	args[pos++] = "--vrdp";
3936	args[pos] = "off";
3937	}
3938	#endif
3939	if (type == "capture")
3940	{
3941	unsigned pos = RT_ELEMENTS(args) - 3;
3942	args[pos] = "--capture";
3943	}
3944	vrc = RTProcCreate(szPath, args, env, 0, &pid);
3945	}
3946	#else /* !VBOX_WITH_HEADLESS */
3947	if (0)
3948	;
3949	#endif /* !VBOX_WITH_HEADLESS */
3950	else
3951	{
3952	RTEnvDestroy (env);
3953	return setError (E_INVALIDARG,
3954	tr ("Invalid session type: '%ls'"), aType);
3955	}
3956
3957	RTEnvDestroy (env);
3958
3959	if (RT_FAILURE(vrc))
3960	return setError (VBOX_E_IPRT_ERROR,
3961	tr ("Could not launch a process for the machine '%ls' (%Rrc)"),
3962	mUserData->mName.raw(), vrc);
3963
3964	LogFlowThisFunc(("launched.pid=%d(0x%x)\n", pid, pid));
3965
3966	/*
3967	* Note that we don't leave the lock here before calling the client,
3968	* because it doesn't need to call us back if called with a NULL argument.
3969	* Leaving the lock herer is dangerous because we didn't prepare the
3970	* launch data yet, but the client we've just started may happen to be
3971	* too fast and call openSession() that will fail (because of PID, etc.),
3972	* so that the Machine will never get out of the Spawning session state.
3973	*/
3974
3975	/* inform the session that it will be a remote one */
3976	LogFlowThisFunc(("Calling AssignMachine (NULL)...\n"));
3977	HRESULT rc = aControl->AssignMachine (NULL);
3978	LogFlowThisFunc(("AssignMachine (NULL) returned %08X\n", rc));
3979
3980	if (FAILED(rc))
3981	{
3982	/* restore the session state */
3983	mData->mSession.mState = SessionState_Closed;
3984	/* The failure may occur w/o any error info (from RPC), so provide one */
3985	return setError(VBOX_E_VM_ERROR,
3986	tr("Failed to assign the machine to the session (%Rrc)"), rc);
3987	}
3988
3989	/* attach launch data to the machine */
3990	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3991	mData->mSession.mRemoteControls.push_back (aControl);
3992	mData->mSession.mProgress = aProgress;
3993	mData->mSession.mPid = pid;
3994	mData->mSession.mState = SessionState_Spawning;
3995	mData->mSession.mType = type;
3996
3997	LogFlowThisFuncLeave();
3998	return S_OK;
3999	}
4000
4001	/**
4002	* @note Locks this object for writing, calls the client process
4003	* (outside the lock).
4004	*/
4005	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
4006	{
4007	LogFlowThisFuncEnter();
4008
4009	AssertReturn(aControl, E_FAIL);
4010
4011	AutoCaller autoCaller(this);
4012	CheckComRCReturnRC(autoCaller.rc());
4013
4014	AutoWriteLock alock(this);
4015
4016	if (!mData->mRegistered)
4017	return setError (E_UNEXPECTED,
4018	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
4019
4020	LogFlowThisFunc(("mSession.state=%d\n", mData->mSession.mState));
4021
4022	if (mData->mSession.mState != SessionState_Open)
4023	return setError (VBOX_E_INVALID_SESSION_STATE,
4024	tr ("The machine '%ls' does not have an open session"),
4025	mUserData->mName.raw());
4026
4027	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
4028
4029	/*
4030	* Get the console from the direct session (note that we don't leave the
4031	* lock here because GetRemoteConsole must not call us back).
4032	*/
4033	ComPtr<IConsole> console;
4034	HRESULT rc = mData->mSession.mDirectControl->
4035	GetRemoteConsole (console.asOutParam());
4036	if (FAILED (rc))
4037	{
4038	/* The failure may occur w/o any error info (from RPC), so provide one */
4039	return setError (VBOX_E_VM_ERROR,
4040	tr ("Failed to get a console object from the direct session (%Rrc)"), rc);
4041	}
4042
4043	ComAssertRet (!console.isNull(), E_FAIL);
4044
4045	ComObjPtr<SessionMachine> sessionMachine = mData->mSession.mMachine;
4046	AssertReturn(!sessionMachine.isNull(), E_FAIL);
4047
4048	/*
4049	* Leave the lock before calling the client process. It's safe here
4050	* since the only thing to do after we get the lock again is to add
4051	* the remote control to the list (which doesn't directly influence
4052	* anything).
4053	*/
4054	alock.leave();
4055
4056	/* attach the remote session to the machine */
4057	LogFlowThisFunc(("Calling AssignRemoteMachine()...\n"));
4058	rc = aControl->AssignRemoteMachine (sessionMachine, console);
4059	LogFlowThisFunc(("AssignRemoteMachine() returned %08X\n", rc));
4060
4061	/* The failure may occur w/o any error info (from RPC), so provide one */
4062	if (FAILED(rc))
4063	return setError(VBOX_E_VM_ERROR,
4064	tr("Failed to assign the machine to the session (%Rrc)"),
4065	rc);
4066
4067	alock.enter();
4068
4069	/* need to revalidate the state after entering the lock again */
4070	if (mData->mSession.mState != SessionState_Open)
4071	{
4072	aControl->Uninitialize();
4073
4074	return setError(VBOX_E_INVALID_SESSION_STATE,
4075	tr("The machine '%ls' does not have an open session"),
4076	mUserData->mName.raw());
4077	}
4078
4079	/* store the control in the list */
4080	mData->mSession.mRemoteControls.push_back (aControl);
4081
4082	LogFlowThisFuncLeave();
4083	return S_OK;
4084	}
4085
4086	/**
4087	* Returns @c true if the given machine has an open direct session and returns
4088	* the session machine instance and additional session data (on some platforms)
4089	* if so.
4090	*
4091	* Note that when the method returns @c false, the arguments remain unchanged.
4092	*
4093	* @param aMachine Session machine object.
4094	* @param aControl Direct session control object (optional).
4095	* @param aIPCSem Mutex IPC semaphore handle for this machine (optional).
4096	*
4097	* @note locks this object for reading.
4098	*/
4099	#if defined (RT_OS_WINDOWS)
4100	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4101	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4102	HANDLE aIPCSem /= NULL*/,
4103	bool aAllowClosing /= false/)
4104	#elif defined (RT_OS_OS2)
4105	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4106	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4107	HMTX aIPCSem /= NULL*/,
4108	bool aAllowClosing /= false/)
4109	#else
4110	bool Machine::isSessionOpen (ComObjPtr<SessionMachine> &aMachine,
4111	ComPtr<IInternalSessionControl> aControl /= NULL*/,
4112	bool aAllowClosing /= false/)
4113	#endif
4114	{
4115	AutoLimitedCaller autoCaller(this);
4116	AssertComRCReturn (autoCaller.rc(), false);
4117
4118	/* just return false for inaccessible machines */
4119	if (autoCaller.state() != Ready)
4120	return false;
4121
4122	AutoReadLock alock(this);
4123
4124	if (mData->mSession.mState == SessionState_Open \|\|
4125	(aAllowClosing && mData->mSession.mState == SessionState_Closing))
4126	{
4127	AssertReturn(!mData->mSession.mMachine.isNull(), false);
4128
4129	aMachine = mData->mSession.mMachine;
4130
4131	if (aControl != NULL)
4132	*aControl = mData->mSession.mDirectControl;
4133
4134	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4135	/* Additional session data */
4136	if (aIPCSem != NULL)
4137	*aIPCSem = aMachine->mIPCSem;
4138	#endif
4139	return true;
4140	}
4141
4142	return false;
4143	}
4144
4145	/**
4146	* Returns @c true if the given machine has an spawning direct session and
4147	* returns and additional session data (on some platforms) if so.
4148	*
4149	* Note that when the method returns @c false, the arguments remain unchanged.
4150	*
4151	* @param aPID PID of the spawned direct session process.
4152	*
4153	* @note locks this object for reading.
4154	*/
4155	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4156	bool Machine::isSessionSpawning (RTPROCESS aPID /= NULL*/)
4157	#else
4158	bool Machine::isSessionSpawning()
4159	#endif
4160	{
4161	AutoLimitedCaller autoCaller(this);
4162	AssertComRCReturn (autoCaller.rc(), false);
4163
4164	/* just return false for inaccessible machines */
4165	if (autoCaller.state() != Ready)
4166	return false;
4167
4168	AutoReadLock alock(this);
4169
4170	if (mData->mSession.mState == SessionState_Spawning)
4171	{
4172	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4173	/* Additional session data */
4174	if (aPID != NULL)
4175	{
4176	AssertReturn(mData->mSession.mPid != NIL_RTPROCESS, false);
4177	*aPID = mData->mSession.mPid;
4178	}
4179	#endif
4180	return true;
4181	}
4182
4183	return false;
4184	}
4185
4186	/**
4187	* Called from the client watcher thread to check for unexpected client process
4188	* death during Session_Spawning state (e.g. before it successfully opened a
4189	* direct session).
4190	*
4191	* On Win32 and on OS/2, this method is called only when we've got the
4192	* direct client's process termination notification, so it always returns @c
4193	* true.
4194	*
4195	* On other platforms, this method returns @c true if the client process is
4196	* terminated and @c false if it's still alive.
4197	*
4198	* @note Locks this object for writing.
4199	*/
4200	bool Machine::checkForSpawnFailure()
4201	{
4202	AutoCaller autoCaller(this);
4203	if (!autoCaller.isOk())
4204	{
4205	/* nothing to do */
4206	LogFlowThisFunc(("Already uninitialized!"));
4207	return true;
4208	}
4209
4210	/* VirtualBox::addProcessToReap() needs a write lock */
4211	AutoMultiWriteLock2 alock (mParent, this);
4212
4213	if (mData->mSession.mState != SessionState_Spawning)
4214	{
4215	/* nothing to do */
4216	LogFlowThisFunc(("Not spawning any more!"));
4217	return true;
4218	}
4219
4220	HRESULT rc = S_OK;
4221
4222	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4223
4224	/* the process was already unexpectedly terminated, we just need to set an
4225	* error and finalize session spawning */
4226	rc = setError(E_FAIL,
4227	tr("Virtual machine '%ls' has terminated unexpectedly during startup"),
4228	name().raw());
4229	#else
4230
4231	RTPROCSTATUS status;
4232	int vrc = ::RTProcWait (mData->mSession.mPid, RTPROCWAIT_FLAGS_NOBLOCK,
4233	&status);
4234
4235	if (vrc != VERR_PROCESS_RUNNING)
4236	rc = setError(E_FAIL,
4237	tr("Virtual machine '%ls' has terminated unexpectedly during startup"),
4238	name().raw());
4239	#endif
4240
4241	if (FAILED(rc))
4242	{
4243	/* Close the remote session, remove the remote control from the list
4244	* and reset session state to Closed (@note keep the code in sync with
4245	* the relevant part in checkForSpawnFailure()). */
4246
4247	Assert (mData->mSession.mRemoteControls.size() == 1);
4248	if (mData->mSession.mRemoteControls.size() == 1)
4249	{
4250	ErrorInfoKeeper eik;
4251	mData->mSession.mRemoteControls.front()->Uninitialize();
4252	}
4253
4254	mData->mSession.mRemoteControls.clear();
4255	mData->mSession.mState = SessionState_Closed;
4256
4257	/* finalize the progress after setting the state, for consistency */
4258	mData->mSession.mProgress->notifyComplete (rc);
4259	mData->mSession.mProgress.setNull();
4260
4261	mParent->addProcessToReap (mData->mSession.mPid);
4262	mData->mSession.mPid = NIL_RTPROCESS;
4263
4264	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
4265	return true;
4266	}
4267
4268	return false;
4269	}
4270
4271	/**
4272	* Checks that the registered flag of the machine can be set according to
4273	* the argument and sets it. On success, commits and saves all settings.
4274	*
4275	* @note When this machine is inaccessible, the only valid value for \a
4276	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
4277	* inaccessible machines are not currently supported. Note that unregistering
4278	* an inaccessible machine will \b uninitialize this machine object. Therefore,
4279	* the caller must make sure there are no active Machine::addCaller() calls
4280	* on the current thread because this will block Machine::uninit().
4281	*
4282	* @note Must be called from mParent's write lock. Locks this object and
4283	* children for writing.
4284	*/
4285	HRESULT Machine::trySetRegistered (BOOL aRegistered)
4286	{
4287	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
4288
4289	AutoLimitedCaller autoCaller(this);
4290	AssertComRCReturnRC(autoCaller.rc());
4291
4292	AutoWriteLock alock(this);
4293
4294	/* wait for state dependants to drop to zero */
4295	ensureNoStateDependencies();
4296
4297	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
4298
4299	if (!mData->mAccessible)
4300	{
4301	/* A special case: the machine is not accessible. */
4302
4303	/* inaccessible machines can only be unregistered */
4304	AssertReturn(!aRegistered, E_FAIL);
4305
4306	/* Uninitialize ourselves here because currently there may be no
4307	* unregistered that are inaccessible (this state combination is not
4308	* supported). Note releasing the caller and leaving the lock before
4309	* calling uninit() */
4310
4311	alock.leave();
4312	autoCaller.release();
4313
4314	uninit();
4315
4316	return S_OK;
4317	}
4318
4319	AssertReturn(autoCaller.state() == Ready, E_FAIL);
4320
4321	/* we will probably modify these and want to prevent concurrent
4322	* modifications until we finish */
4323	AutoWriteLock dvdLock (mDVDDrive);
4324	AutoWriteLock floppyLock (mFloppyDrive);
4325
4326	if (aRegistered)
4327	{
4328	if (mData->mRegistered)
4329	return setError(VBOX_E_INVALID_OBJECT_STATE,
4330	tr("The machine '%ls' with UUID {%s} is already registered"),
4331	mUserData->mName.raw(),
4332	mData->mUuid.toString().raw());
4333	}
4334	else
4335	{
4336	if (mData->mMachineState == MachineState_Saved)
4337	return setError(VBOX_E_INVALID_VM_STATE,
4338	tr("Cannot unregister the machine '%ls' because it is in the Saved state"),
4339	mUserData->mName.raw());
4340
4341	size_t snapshotCount = 0;
4342	if (mData->mFirstSnapshot)
4343	snapshotCount = mData->mFirstSnapshot->getAllChildrenCount() + 1;
4344	if (snapshotCount)
4345	return setError(VBOX_E_INVALID_OBJECT_STATE,
4346	tr("Cannot unregister the machine '%ls' because it has %d snapshots"),
4347	mUserData->mName.raw(), snapshotCount);
4348
4349	if (mData->mSession.mState != SessionState_Closed)
4350	return setError(VBOX_E_INVALID_OBJECT_STATE,
4351	tr("Cannot unregister the machine '%ls' because it has an open session"),
4352	mUserData->mName.raw());
4353
4354	if (mHDData->mAttachments.size() != 0)
4355	return setError(VBOX_E_INVALID_OBJECT_STATE,
4356	tr("Cannot unregister the machine '%ls' because it has %d hard disks attached"),
4357	mUserData->mName.raw(),
4358	mHDData->mAttachments.size());
4359
4360	/* Note that we do not prevent unregistration of a DVD or Floppy image
4361	* is attached: as opposed to hard disks detaching such an image
4362	* implicitly in this method (which we will do below) won't have any
4363	* side effects (like detached orphan base and diff hard disks etc).*/
4364	}
4365
4366	HRESULT rc = S_OK;
4367
4368	/* Ensure the settings are saved. If we are going to be registered and
4369	* isConfigLocked() is FALSE then it means that no config file exists yet,
4370	* so create it by calling saveSettings() too. */
4371	if ( isModified()
4372	\|\| (aRegistered && !mData->m_pMachineConfigFile->fileExists())
4373	)
4374	{
4375	rc = saveSettings();
4376	CheckComRCReturnRC(rc);
4377	}
4378
4379	/* Implicitly detach DVD/Floppy */
4380	rc = mDVDDrive->unmount();
4381	if (SUCCEEDED(rc))
4382	rc = mFloppyDrive->unmount();
4383
4384	if (SUCCEEDED(rc))
4385	{
4386	/* we may have had implicit modifications we want to fix on success */
4387	commit();
4388
4389	mData->mRegistered = aRegistered;
4390	}
4391	else
4392	{
4393	/* we may have had implicit modifications we want to cancel on failure*/
4394	rollback (false /* aNotify */);
4395	}
4396
4397	return rc;
4398	}
4399
4400	/**
4401	* Increases the number of objects dependent on the machine state or on the
4402	* registered state. Guarantees that these two states will not change at least
4403	* until #releaseStateDependency() is called.
4404	*
4405	* Depending on the @a aDepType value, additional state checks may be made.
4406	* These checks will set extended error info on failure. See
4407	* #checkStateDependency() for more info.
4408	*
4409	* If this method returns a failure, the dependency is not added and the caller
4410	* is not allowed to rely on any particular machine state or registration state
4411	* value and may return the failed result code to the upper level.
4412	*
4413	* @param aDepType Dependency type to add.
4414	* @param aState Current machine state (NULL if not interested).
4415	* @param aRegistered Current registered state (NULL if not interested).
4416	*
4417	* @note Locks this object for writing.
4418	*/
4419	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
4420	MachineState_T aState / = NULL */,
4421	BOOL aRegistered / = NULL */)
4422	{
4423	AutoCaller autoCaller(this);
4424	AssertComRCReturnRC(autoCaller.rc());
4425
4426	AutoWriteLock alock(this);
4427
4428	HRESULT rc = checkStateDependency(aDepType);
4429	CheckComRCReturnRC(rc);
4430
4431	{
4432	if (mData->mMachineStateChangePending != 0)
4433	{
4434	/* ensureNoStateDependencies() is waiting for state dependencies to
4435	* drop to zero so don't add more. It may make sense to wait a bit
4436	* and retry before reporting an error (since the pending state
4437	* transition should be really quick) but let's just assert for
4438	* now to see if it ever happens on practice. */
4439
4440	AssertFailed();
4441
4442	return setError(E_ACCESSDENIED,
4443	tr("Machine state change is in progress. Please retry the operation later."));
4444	}
4445
4446	++ mData->mMachineStateDeps;
4447	Assert (mData->mMachineStateDeps != 0 /* overflow */);
4448	}
4449
4450	if (aState)
4451	*aState = mData->mMachineState;
4452	if (aRegistered)
4453	*aRegistered = mData->mRegistered;
4454
4455	return S_OK;
4456	}
4457
4458	/**
4459	* Decreases the number of objects dependent on the machine state.
4460	* Must always complete the #addStateDependency() call after the state
4461	* dependency is no more necessary.
4462	*/
4463	void Machine::releaseStateDependency()
4464	{
4465	AutoCaller autoCaller(this);
4466	AssertComRCReturnVoid (autoCaller.rc());
4467
4468	AutoWriteLock alock(this);
4469
4470	AssertReturnVoid (mData->mMachineStateDeps != 0
4471	/* releaseStateDependency() w/o addStateDependency()? */);
4472	-- mData->mMachineStateDeps;
4473
4474	if (mData->mMachineStateDeps == 0)
4475	{
4476	/* inform ensureNoStateDependencies() that there are no more deps */
4477	if (mData->mMachineStateChangePending != 0)
4478	{
4479	Assert (mData->mMachineStateDepsSem != NIL_RTSEMEVENTMULTI);
4480	RTSemEventMultiSignal (mData->mMachineStateDepsSem);
4481	}
4482	}
4483	}
4484
4485	// protected methods
4486	/////////////////////////////////////////////////////////////////////////////
4487
4488	/**
4489	* Performs machine state checks based on the @a aDepType value. If a check
4490	* fails, this method will set extended error info, otherwise it will return
4491	* S_OK. It is supposed, that on failure, the caller will immedieately return
4492	* the return value of this method to the upper level.
4493	*
4494	* When @a aDepType is AnyStateDep, this method always returns S_OK.
4495	*
4496	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
4497	* current state of this machine object allows to change settings of the
4498	* machine (i.e. the machine is not registered, or registered but not running
4499	* and not saved). It is useful to call this method from Machine setters
4500	* before performing any change.
4501	*
4502	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
4503	* as for MutableStateDep except that if the machine is saved, S_OK is also
4504	* returned. This is useful in setters which allow changing machine
4505	* properties when it is in the saved state.
4506	*
4507	* @param aDepType Dependency type to check.
4508	*
4509	* @note Non Machine based classes should use #addStateDependency() and
4510	* #releaseStateDependency() methods or the smart AutoStateDependency
4511	* template.
4512	*
4513	* @note This method must be called from under this object's read or write
4514	* lock.
4515	*/
4516	HRESULT Machine::checkStateDependency(StateDependency aDepType)
4517	{
4518	switch (aDepType)
4519	{
4520	case AnyStateDep:
4521	{
4522	break;
4523	}
4524	case MutableStateDep:
4525	{
4526	if (mData->mRegistered &&
4527	(mType != IsSessionMachine \|\|
4528	mData->mMachineState > MachineState_Paused \|\|
4529	mData->mMachineState == MachineState_Saved))
4530	return setError(VBOX_E_INVALID_VM_STATE,
4531	tr("The machine is not mutable (state is %d)"),
4532	mData->mMachineState);
4533	break;
4534	}
4535	case MutableOrSavedStateDep:
4536	{
4537	if (mData->mRegistered &&
4538	(mType != IsSessionMachine \|\|
4539	mData->mMachineState > MachineState_Paused))
4540	return setError(VBOX_E_INVALID_VM_STATE,
4541	tr("The machine is not mutable (state is %d)"),
4542	mData->mMachineState);
4543	break;
4544	}
4545	}
4546
4547	return S_OK;
4548	}
4549
4550	/**
4551	* Makes sure that there are no machine state dependants. If necessary, waits
4552	* for the number of dependants to drop to zero.
4553	*
4554	* Make sure this method is called from under this object's write lock to
4555	* guarantee that no new dependants may be added when this method returns
4556	* control to the caller.
4557	*
4558	* @note Locks this object for writing. The lock will be released while waiting
4559	* (if necessary).
4560	*
4561	* @warning To be used only in methods that change the machine state!
4562	*/
4563	void Machine::ensureNoStateDependencies()
4564	{
4565	AssertReturnVoid (isWriteLockOnCurrentThread());
4566
4567	AutoWriteLock alock(this);
4568
4569	/* Wait for all state dependants if necessary */
4570	if (mData->mMachineStateDeps != 0)
4571	{
4572	/* lazy semaphore creation */
4573	if (mData->mMachineStateDepsSem == NIL_RTSEMEVENTMULTI)
4574	RTSemEventMultiCreate (&mData->mMachineStateDepsSem);
4575
4576	LogFlowThisFunc(("Waiting for state deps (%d) to drop to zero...\n",
4577	mData->mMachineStateDeps));
4578
4579	++ mData->mMachineStateChangePending;
4580
4581	/* reset the semaphore before waiting, the last dependant will signal
4582	* it */
4583	RTSemEventMultiReset (mData->mMachineStateDepsSem);
4584
4585	alock.leave();
4586
4587	RTSemEventMultiWait (mData->mMachineStateDepsSem, RT_INDEFINITE_WAIT);
4588
4589	alock.enter();
4590
4591	-- mData->mMachineStateChangePending;
4592	}
4593	}
4594
4595	/**
4596	* Changes the machine state and informs callbacks.
4597	*
4598	* This method is not intended to fail so it either returns S_OK or asserts (and
4599	* returns a failure).
4600	*
4601	* @note Locks this object for writing.
4602	*/
4603	HRESULT Machine::setMachineState (MachineState_T aMachineState)
4604	{
4605	LogFlowThisFuncEnter();
4606	LogFlowThisFunc(("aMachineState=%d\n", aMachineState));
4607
4608	AutoCaller autoCaller(this);
4609	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
4610
4611	AutoWriteLock alock(this);
4612
4613	/* wait for state dependants to drop to zero */
4614	ensureNoStateDependencies();
4615
4616	if (mData->mMachineState != aMachineState)
4617	{
4618	mData->mMachineState = aMachineState;
4619
4620	RTTimeNow (&mData->mLastStateChange);
4621
4622	mParent->onMachineStateChange(mData->mUuid, aMachineState);
4623	}
4624
4625	LogFlowThisFuncLeave();
4626	return S_OK;
4627	}
4628
4629	/**
4630	* Searches for a shared folder with the given logical name
4631	* in the collection of shared folders.
4632	*
4633	* @param aName logical name of the shared folder
4634	* @param aSharedFolder where to return the found object
4635	* @param aSetError whether to set the error info if the folder is
4636	* not found
4637	* @return
4638	* S_OK when found or VBOX_E_OBJECT_NOT_FOUND when not found
4639	*
4640	* @note
4641	* must be called from under the object's lock!
4642	*/
4643	HRESULT Machine::findSharedFolder (CBSTR aName,
4644	ComObjPtr<SharedFolder> &aSharedFolder,
4645	bool aSetError /* = false */)
4646	{
4647	bool found = false;
4648	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
4649	!found && it != mHWData->mSharedFolders.end();
4650	++ it)
4651	{
4652	AutoWriteLock alock(*it);
4653	found = (*it)->name() == aName;
4654	if (found)
4655	aSharedFolder = *it;
4656	}
4657
4658	HRESULT rc = found ? S_OK : VBOX_E_OBJECT_NOT_FOUND;
4659
4660	if (aSetError && !found)
4661	setError(rc, tr("Could not find a shared folder named '%ls'"), aName);
4662
4663	return rc;
4664	}
4665
4666	/**
4667	* Loads all the VM settings by walking down the <Machine> node.
4668	*
4669	* @param aRegistered true when the machine is being loaded on VirtualBox
4670	* startup
4671	*
4672	* @note This method is intended to be called only from init(), so it assumes
4673	* all machine data fields have appropriate default values when it is called.
4674	*
4675	* @note Doesn't lock any objects.
4676	*/
4677	HRESULT Machine::loadSettings(bool aRegistered)
4678	{
4679	LogFlowThisFuncEnter();
4680	AssertReturn(mType == IsMachine, E_FAIL);
4681
4682	AutoCaller autoCaller(this);
4683	AssertReturn(autoCaller.state() == InInit, E_FAIL);
4684
4685	HRESULT rc = S_OK;
4686
4687	try
4688	{
4689	Assert(mData->m_pMachineConfigFile == NULL);
4690
4691	// load and parse machine XML; this will throw on XML or logic errors
4692	mData->m_pMachineConfigFile = new settings::MachineConfigFile(&mData->m_strConfigFileFull);
4693
4694	/* If the stored UUID is not empty, it means the registered machine
4695	* is being loaded. Compare the loaded UUID with the stored one taken
4696	* from the global registry. */
4697	if (!mData->mUuid.isEmpty())
4698	{
4699	if (mData->mUuid != mData->m_pMachineConfigFile->uuid)
4700	{
4701	throw setError(E_FAIL,
4702	tr("Machine UUID {%RTuuid} in '%s' doesn't match its UUID {%s} in the registry file '%s'"),
4703	mData->m_pMachineConfigFile->uuid.raw(),
4704	mData->m_strConfigFileFull.raw(),
4705	mData->mUuid.toString().raw(),
4706	mParent->settingsFilePath().raw());
4707	}
4708	}
4709	else
4710	unconst (mData->mUuid) = mData->m_pMachineConfigFile->uuid;
4711
4712	/* name (required) */
4713	mUserData->mName = mData->m_pMachineConfigFile->strName;
4714
4715	/* nameSync (optional, default is true) */
4716	mUserData->mNameSync = mData->m_pMachineConfigFile->fNameSync;
4717
4718	mUserData->mDescription = mData->m_pMachineConfigFile->strDescription;
4719
4720	// guest OS type
4721	mUserData->mOSTypeId = mData->m_pMachineConfigFile->strOsType;
4722	/* look up the object by Id to check it is valid */
4723	ComPtr<IGuestOSType> guestOSType;
4724	rc = mParent->GetGuestOSType(mUserData->mOSTypeId,
4725	guestOSType.asOutParam());
4726	CheckComRCThrowRC(rc);
4727
4728	// stateFile (optional)
4729	if (mData->m_pMachineConfigFile->strStateFile.isEmpty())
4730	mSSData->mStateFilePath.setNull();
4731	else
4732	{
4733	Utf8Str stateFilePathFull(mData->m_pMachineConfigFile->strStateFile);
4734	int vrc = calculateFullPath(stateFilePathFull, stateFilePathFull);
4735	if (RT_FAILURE(vrc))
4736	throw setError(E_FAIL,
4737	tr("Invalid saved state file path '%s' (%Rrc)"),
4738	mData->m_pMachineConfigFile->strStateFile.raw(),
4739	vrc);
4740	mSSData->mStateFilePath = stateFilePathFull;
4741	}
4742
4743	/* snapshotFolder (optional) */
4744	rc = COMSETTER(SnapshotFolder)(Bstr(mData->m_pMachineConfigFile->strSnapshotFolder));
4745	CheckComRCThrowRC(rc);
4746
4747	/* currentStateModified (optional, default is true) */
4748	mData->mCurrentStateModified = mData->m_pMachineConfigFile->fCurrentStateModified;
4749
4750	mData->mLastStateChange = mData->m_pMachineConfigFile->timeLastStateChange;
4751
4752	/*
4753	* note: all mUserData members must be assigned prior this point because
4754	* we need to commit changes in order to let mUserData be shared by all
4755	* snapshot machine instances.
4756	*/
4757	mUserData.commitCopy();
4758
4759	/* Snapshot node (optional) */
4760	if (mData->m_pMachineConfigFile->llFirstSnapshot.size())
4761	{
4762	// there can only be one root snapshot
4763	Assert(mData->m_pMachineConfigFile->llFirstSnapshot.size() == 1);
4764
4765	settings::Snapshot &snap = mData->m_pMachineConfigFile->llFirstSnapshot.front();
4766
4767	rc = loadSnapshot(snap,
4768	mData->m_pMachineConfigFile->uuidCurrentSnapshot,
4769	NULL); // no parent == first snapshot
4770	CheckComRCThrowRC(rc);
4771	}
4772
4773	/* Hardware node (required) */
4774	rc = loadHardware(mData->m_pMachineConfigFile->hardwareMachine);
4775	CheckComRCThrowRC(rc);
4776
4777	/* Load storage controllers */
4778	rc = loadStorageControllers(mData->m_pMachineConfigFile->storageMachine, aRegistered);
4779	CheckComRCThrowRC(rc);
4780
4781	/*
4782	* NOTE: the assignment below must be the last thing to do,
4783	* otherwise it will be not possible to change the settings
4784	* somewehere in the code above because all setters will be
4785	* blocked by checkStateDependency(MutableStateDep).
4786	*/
4787
4788	/* set the machine state to Aborted or Saved when appropriate */
4789	if (mData->m_pMachineConfigFile->fAborted)
4790	{
4791	Assert(!mSSData->mStateFilePath);
4792	mSSData->mStateFilePath.setNull();
4793
4794	/* no need to use setMachineState() during init() */
4795	mData->mMachineState = MachineState_Aborted;
4796	}
4797	else if (mSSData->mStateFilePath)
4798	{
4799	/* no need to use setMachineState() during init() */
4800	mData->mMachineState = MachineState_Saved;
4801	}
4802	}
4803	catch (HRESULT err)
4804	{
4805	/* we assume that error info is set by the thrower */
4806	rc = err;
4807	}
4808	catch (...)
4809	{
4810	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
4811	}
4812
4813	LogFlowThisFuncLeave();
4814	return rc;
4815	}
4816
4817	/**
4818	* Recursively loads all snapshots starting from the given.
4819	*
4820	* @param aNode <Snapshot> node.
4821	* @param aCurSnapshotId Current snapshot ID from the settings file.
4822	* @param aParentSnapshot Parent snapshot.
4823	*/
4824	HRESULT Machine::loadSnapshot(const settings::Snapshot &data,
4825	const Guid &aCurSnapshotId,
4826	Snapshot *aParentSnapshot)
4827	{
4828	AssertReturn (mType == IsMachine, E_FAIL);
4829
4830	HRESULT rc = S_OK;
4831
4832	Utf8Str strStateFile;
4833	if (!data.strStateFile.isEmpty())
4834	{
4835	/* optional */
4836	strStateFile = data.strStateFile;
4837	int vrc = calculateFullPath(strStateFile, strStateFile);
4838	if (RT_FAILURE(vrc))
4839	return setError(E_FAIL,
4840	tr("Invalid saved state file path '%s' (%Rrc)"),
4841	strStateFile.raw(),
4842	vrc);
4843	}
4844
4845	/* create a snapshot machine object */
4846	ComObjPtr<SnapshotMachine> pSnapshotMachine;
4847	pSnapshotMachine.createObject();
4848	rc = pSnapshotMachine->init(this,
4849	data.hardware,
4850	data.storage,
4851	data.uuid,
4852	strStateFile);
4853	CheckComRCReturnRC (rc);
4854
4855	/* create a snapshot object */
4856	ComObjPtr<Snapshot> pSnapshot;
4857	pSnapshot.createObject();
4858	/* initialize the snapshot */
4859	rc = pSnapshot->init(mParent, // VirtualBox object
4860	data.uuid,
4861	data.strName,
4862	data.strDescription,
4863	data.timestamp,
4864	pSnapshotMachine,
4865	aParentSnapshot);
4866	CheckComRCReturnRC (rc);
4867
4868	/* memorize the first snapshot if necessary */
4869	if (!mData->mFirstSnapshot)
4870	mData->mFirstSnapshot = pSnapshot;
4871
4872	/* memorize the current snapshot when appropriate */
4873	if ( !mData->mCurrentSnapshot
4874	&& pSnapshot->getId() == aCurSnapshotId
4875	)
4876	mData->mCurrentSnapshot = pSnapshot;
4877
4878	// now create the children
4879	for (settings::SnapshotsList::const_iterator it = data.llChildSnapshots.begin();
4880	it != data.llChildSnapshots.end();
4881	++it)
4882	{
4883	const settings::Snapshot &childData = *it;
4884	// recurse
4885	rc = loadSnapshot(childData,
4886	aCurSnapshotId,
4887	pSnapshot); // parent = the one we created above
4888	CheckComRCBreakRC(rc);
4889	}
4890
4891	return rc;
4892	}
4893
4894	/**
4895	* @param aNode <Hardware> node.
4896	*/
4897	HRESULT Machine::loadHardware(const settings::Hardware &data)
4898	{
4899	AssertReturn(mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
4900
4901	HRESULT rc = S_OK;
4902
4903	try
4904	{
4905	/* The hardware version attribute (optional). */
4906	mHWData->mHWVersion = data.strVersion;
4907
4908	mHWData->mHWVirtExEnabled = data.fHardwareVirt;
4909	mHWData->mHWVirtExNestedPagingEnabled = data.fNestedPaging;
4910	mHWData->mHWVirtExVPIDEnabled = data.fVPID;
4911	mHWData->mPAEEnabled = data.fPAE;
4912
4913	mHWData->mCPUCount = data.cCPUs;
4914
4915	mHWData->mMemorySize = data.ulMemorySizeMB;
4916
4917	// boot order
4918	for (size_t i = 0;
4919	i < RT_ELEMENTS(mHWData->mBootOrder);
4920	i++)
4921	{
4922	settings::BootOrderMap::const_iterator it = data.mapBootOrder.find(i);
4923	if (it == data.mapBootOrder.end())
4924	mHWData->mBootOrder[i] = DeviceType_Null;
4925	else
4926	mHWData->mBootOrder[i] = it->second;
4927	}
4928
4929	mHWData->mVRAMSize = data.ulVRAMSizeMB;
4930	mHWData->mMonitorCount = data.cMonitors;
4931	mHWData->mAccelerate3DEnabled = data.fAccelerate3D;
4932	mHWData->mAccelerate2DVideoEnabled = data.fAccelerate2DVideo;
4933
4934	#ifdef VBOX_WITH_VRDP
4935	/* RemoteDisplay */
4936	rc = mVRDPServer->loadSettings(data.vrdpSettings);
4937	CheckComRCReturnRC (rc);
4938	#endif
4939
4940	/* BIOS */
4941	rc = mBIOSSettings->loadSettings(data.biosSettings);
4942	CheckComRCReturnRC (rc);
4943
4944	/* DVD drive */
4945	rc = mDVDDrive->loadSettings(data.dvdDrive);
4946	CheckComRCReturnRC (rc);
4947
4948	/* Floppy drive */
4949	rc = mFloppyDrive->loadSettings(data.floppyDrive);
4950	CheckComRCReturnRC (rc);
4951
4952	/* USB Controller */
4953	rc = mUSBController->loadSettings(data.usbController);
4954	CheckComRCReturnRC (rc);
4955
4956	// network adapters
4957	for (settings::NetworkAdaptersList::const_iterator it = data.llNetworkAdapters.begin();
4958	it != data.llNetworkAdapters.end();
4959	++it)
4960	{
4961	const settings::NetworkAdapter &nic = *it;
4962
4963	/* slot unicity is guaranteed by XML Schema */
4964	AssertBreak(nic.ulSlot < RT_ELEMENTS(mNetworkAdapters));
4965	rc = mNetworkAdapters[nic.ulSlot]->loadSettings(nic);
4966	CheckComRCReturnRC (rc);
4967	}
4968
4969	// serial ports
4970	for (settings::SerialPortsList::const_iterator it = data.llSerialPorts.begin();
4971	it != data.llSerialPorts.end();
4972	++it)
4973	{
4974	const settings::SerialPort &s = *it;
4975
4976	AssertBreak(s.ulSlot < RT_ELEMENTS(mSerialPorts));
4977	rc = mSerialPorts[s.ulSlot]->loadSettings(s);
4978	CheckComRCReturnRC (rc);
4979	}
4980
4981	// parallel ports (optional)
4982	for (settings::ParallelPortsList::const_iterator it = data.llParallelPorts.begin();
4983	it != data.llParallelPorts.end();
4984	++it)
4985	{
4986	const settings::ParallelPort &p = *it;
4987
4988	AssertBreak(p.ulSlot < RT_ELEMENTS(mParallelPorts));
4989	rc = mParallelPorts[p.ulSlot]->loadSettings(p);
4990	CheckComRCReturnRC (rc);
4991	}
4992
4993	/* AudioAdapter */
4994	rc = mAudioAdapter->loadSettings(data.audioAdapter);
4995	CheckComRCReturnRC (rc);
4996
4997	for (settings::SharedFoldersList::const_iterator it = data.llSharedFolders.begin();
4998	it != data.llSharedFolders.end();
4999	++it)
5000	{
5001	const settings::SharedFolder &sf = *it;
5002	rc = CreateSharedFolder(Bstr(sf.strName), Bstr(sf.strHostPath), sf.fWritable);
5003	CheckComRCReturnRC (rc);
5004	}
5005
5006	// Clipboard
5007	mHWData->mClipboardMode = data.clipboardMode;
5008
5009	// guest settings
5010	mHWData->mMemoryBalloonSize = data.ulMemoryBalloonSize;
5011	mHWData->mStatisticsUpdateInterval = data.ulStatisticsUpdateInterval;
5012
5013	#ifdef VBOX_WITH_GUEST_PROPS
5014	/* Guest properties (optional) */
5015	for (settings::GuestPropertiesList::const_iterator it = data.llGuestProperties.begin();
5016	it != data.llGuestProperties.end();
5017	++it)
5018	{
5019	const settings::GuestProperty &prop = *it;
5020	uint32_t fFlags = guestProp::NILFLAG;
5021	guestProp::validateFlags(prop.strFlags.c_str(), &fFlags);
5022	HWData::GuestProperty property = { prop.strName, prop.strValue, prop.timestamp, fFlags };
5023	mHWData->mGuestProperties.push_back(property);
5024	}
5025
5026	mHWData->mPropertyServiceActive = false;
5027	mHWData->mGuestPropertyNotificationPatterns = data.strNotificationPatterns;
5028	#endif /* VBOX_WITH_GUEST_PROPS defined */
5029	}
5030	catch(std::bad_alloc &)
5031	{
5032	return E_OUTOFMEMORY;
5033	}
5034
5035	AssertComRC(rc);
5036	return rc;
5037	}
5038
5039	/**
5040	* @param aNode <StorageControllers> node.
5041	*/
5042	HRESULT Machine::loadStorageControllers(const settings::Storage &data,
5043	bool aRegistered,
5044	const Guid aSnapshotId / = NULL */)
5045	{
5046	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
5047
5048	HRESULT rc = S_OK;
5049
5050	/* Make sure the attached hard disks don't get unregistered until we
5051	* associate them with tis machine (important for VMs loaded (opened) after
5052	* VirtualBox startup) */
5053	AutoReadLock vboxLock(mParent);
5054
5055	for (settings::StorageControllersList::const_iterator it = data.llStorageControllers.begin();
5056	it != data.llStorageControllers.end();
5057	++it)
5058	{
5059	const settings::StorageController &ctlData = *it;
5060
5061	ComObjPtr<StorageController> pCtl;
5062	/* Try to find one with the name first. */
5063	rc = getStorageControllerByName(ctlData.strName, pCtl, false /* aSetError */);
5064	if (SUCCEEDED(rc))
5065	return setError(VBOX_E_OBJECT_IN_USE,
5066	tr("Storage controller named '%s' already exists"),
5067	ctlData.strName.raw());
5068
5069	pCtl.createObject();
5070	rc = pCtl->init(this,
5071	ctlData.strName,
5072	ctlData.storageBus);
5073	CheckComRCReturnRC (rc);
5074
5075	mStorageControllers->push_back(pCtl);
5076
5077	rc = pCtl->COMSETTER(ControllerType)(ctlData.controllerType);
5078	CheckComRCReturnRC (rc);
5079
5080	rc = pCtl->COMSETTER(PortCount)(ctlData.ulPortCount);
5081	CheckComRCReturnRC (rc);
5082
5083	/* Set IDE emulation settings (only for AHCI controller). */
5084	if (ctlData.controllerType == StorageControllerType_IntelAhci)
5085	{
5086	if ( (FAILED(rc = pCtl->SetIDEEmulationPort(0, ctlData.lIDE0MasterEmulationPort)))
5087	\|\| (FAILED(rc = pCtl->SetIDEEmulationPort(1, ctlData.lIDE0SlaveEmulationPort)))
5088	\|\| (FAILED(rc = pCtl->SetIDEEmulationPort(2, ctlData.lIDE1MasterEmulationPort)))
5089	\|\| (FAILED(rc = pCtl->SetIDEEmulationPort(3, ctlData.lIDE1SlaveEmulationPort)))
5090	)
5091	return rc;
5092	}
5093
5094	/* Load the attached devices now. */
5095	rc = loadStorageDevices(pCtl, ctlData,
5096	aRegistered,
5097	aSnapshotId);
5098	CheckComRCReturnRC (rc);
5099	}
5100
5101	return S_OK;
5102	}
5103
5104	/**
5105	* @param aNode <HardDiskAttachments> node.
5106	* @param aRegistered true when the machine is being loaded on VirtualBox
5107	* startup, or when a snapshot is being loaded (wchich
5108	* currently can happen on startup only)
5109	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
5110	*
5111	* @note Lock mParent for reading and hard disks for writing before calling.
5112	*/
5113	HRESULT Machine::loadStorageDevices(StorageController *aStorageController,
5114	const settings::StorageController &data,
5115	bool aRegistered,
5116	const Guid aSnapshotId /= NULL*/)
5117	{
5118	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
5119	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
5120
5121	HRESULT rc = S_OK;
5122
5123	if (!aRegistered && data.llAttachedDevices.size() > 0)
5124	/* when the machine is being loaded (opened) from a file, it cannot
5125	* have hard disks attached (this should not happen normally,
5126	* because we don't allow to attach hard disks to an unregistered
5127	* VM at all */
5128	return setError(E_FAIL,
5129	tr("Unregistered machine '%ls' cannot have hard disks attached (found %d hard disk attachments)"),
5130	mUserData->mName.raw(),
5131	data.llAttachedDevices.size());
5132
5133	for (settings::AttachedDevicesList::const_iterator it = data.llAttachedDevices.begin();
5134	it != data.llAttachedDevices.end();
5135	++it)
5136	{
5137	const settings::AttachedDevice &dev = *it;
5138
5139	/* find a hard disk by UUID */
5140	ComObjPtr<HardDisk> pDisk;
5141	rc = mParent->findHardDisk(&dev.uuid, NULL, true /* aDoSetError */, &pDisk);
5142	CheckComRCReturnRC (rc);
5143
5144	AutoWriteLock hdLock(pDisk);
5145
5146	if (pDisk->type() == HardDiskType_Immutable)
5147	{
5148	if (mType == IsSnapshotMachine)
5149	return setError(E_FAIL,
5150	tr("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be directly attached to snapshot with UUID {%RTuuid} "
5151	"of the virtual machine '%ls' ('%s')"),
5152	pDisk->locationFull().raw(),
5153	dev.uuid.raw(),
5154	aSnapshotId->raw(),
5155	mUserData->mName.raw(),
5156	mData->m_strConfigFileFull.raw());
5157
5158	return setError(E_FAIL,
5159	tr("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be directly attached to the virtual machine '%ls' ('%s')"),
5160	pDisk->locationFull().raw(),
5161	dev.uuid.raw(),
5162	mUserData->mName.raw(),
5163	mData->m_strConfigFileFull.raw());
5164	}
5165
5166	if ( mType != IsSnapshotMachine
5167	&& pDisk->children().size() != 0
5168	)
5169	return setError(E_FAIL,
5170	tr("Hard disk '%ls' with UUID {%RTuuid} cannot be directly attached to the virtual machine '%ls' ('%s') "
5171	"because it has %d differencing child hard disks"),
5172	pDisk->locationFull().raw(),
5173	dev.uuid.raw(),
5174	mUserData->mName.raw(),
5175	mData->m_strConfigFileFull.raw(),
5176	pDisk->children().size());
5177
5178	if (std::find_if(mHDData->mAttachments.begin(),
5179	mHDData->mAttachments.end(),
5180	HardDiskAttachment::RefersTo(pDisk))
5181	!= mHDData->mAttachments.end())
5182	{
5183	return setError(E_FAIL,
5184	tr("Hard disk '%ls' with UUID {%RTuuid} is already attached to the virtual machine '%ls' ('%s')"),
5185	pDisk->locationFull().raw(),
5186	dev.uuid.raw(),
5187	mUserData->mName.raw(),
5188	mData->m_strConfigFileFull.raw());
5189	}
5190
5191	const Bstr controllerName = aStorageController->name();
5192	ComObjPtr<HardDiskAttachment> pAttachment;
5193	pAttachment.createObject();
5194	rc = pAttachment->init(pDisk,
5195	controllerName,
5196	dev.lPort,
5197	dev.lDevice);
5198	CheckComRCBreakRC(rc);
5199
5200	/* associate the hard disk with this machine and snapshot */
5201	if (mType == IsSnapshotMachine)
5202	rc = pDisk->attachTo(mData->mUuid, *aSnapshotId);
5203	else
5204	rc = pDisk->attachTo(mData->mUuid);
5205
5206	AssertComRCBreakRC (rc);
5207
5208	/* backup mHDData to let registeredInit() properly rollback on failure
5209	* (= limited accessibility) */
5210
5211	mHDData.backup();
5212	mHDData->mAttachments.push_back(pAttachment);
5213	}
5214
5215	return rc;
5216	}
5217
5218	/**
5219	* Returns the snapshot with the given UUID or fails of no such snapshot exists.
5220	*
5221	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5222	* @param aSnapshot where to return the found snapshot
5223	* @param aSetError true to set extended error info on failure
5224	*/
5225	HRESULT Machine::findSnapshot(const Guid &aId,
5226	ComObjPtr<Snapshot> &aSnapshot,
5227	bool aSetError /* = false */)
5228	{
5229	AutoReadLock chlock(snapshotsTreeLockHandle());
5230
5231	if (!mData->mFirstSnapshot)
5232	{
5233	if (aSetError)
5234	return setError(E_FAIL,
5235	tr("This machine does not have any snapshots"));
5236	return E_FAIL;
5237	}
5238
5239	if (aId.isEmpty())
5240	aSnapshot = mData->mFirstSnapshot;
5241	else
5242	aSnapshot = mData->mFirstSnapshot->findChildOrSelf(aId);
5243
5244	if (!aSnapshot)
5245	{
5246	if (aSetError)
5247	return setError(E_FAIL,
5248	tr("Could not find a snapshot with UUID {%s}"),
5249	aId.toString().raw());
5250	return E_FAIL;
5251	}
5252
5253	return S_OK;
5254	}
5255
5256	/**
5257	* Returns the snapshot with the given name or fails of no such snapshot.
5258	*
5259	* @param aName snapshot name to find
5260	* @param aSnapshot where to return the found snapshot
5261	* @param aSetError true to set extended error info on failure
5262	*/
5263	HRESULT Machine::findSnapshot(IN_BSTR aName,
5264	ComObjPtr<Snapshot> &aSnapshot,
5265	bool aSetError /* = false */)
5266	{
5267	AssertReturn(aName, E_INVALIDARG);
5268
5269	AutoReadLock chlock(snapshotsTreeLockHandle());
5270
5271	if (!mData->mFirstSnapshot)
5272	{
5273	if (aSetError)
5274	return setError(VBOX_E_OBJECT_NOT_FOUND,
5275	tr("This machine does not have any snapshots"));
5276	return VBOX_E_OBJECT_NOT_FOUND;
5277	}
5278
5279	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5280
5281	if (!aSnapshot)
5282	{
5283	if (aSetError)
5284	return setError(VBOX_E_OBJECT_NOT_FOUND,
5285	tr("Could not find a snapshot named '%ls'"), aName);
5286	return VBOX_E_OBJECT_NOT_FOUND;
5287	}
5288
5289	return S_OK;
5290	}
5291
5292	/**
5293	* Returns a storage controller object with the given name.
5294	*
5295	* @param aName storage controller name to find
5296	* @param aStorageController where to return the found storage controller
5297	* @param aSetError true to set extended error info on failure
5298	*/
5299	HRESULT Machine::getStorageControllerByName(const Utf8Str &aName,
5300	ComObjPtr<StorageController> &aStorageController,
5301	bool aSetError /* = false */)
5302	{
5303	AssertReturn (!aName.isEmpty(), E_INVALIDARG);
5304
5305	for (StorageControllerList::const_iterator it = mStorageControllers->begin();
5306	it != mStorageControllers->end();
5307	++it)
5308	{
5309	if ((*it)->name() == aName)
5310	{
5311	aStorageController = (*it);
5312	return S_OK;
5313	}
5314	}
5315
5316	if (aSetError)
5317	return setError(VBOX_E_OBJECT_NOT_FOUND,
5318	tr("Could not find a storage controller named '%s'"),
5319	aName.raw());
5320	return VBOX_E_OBJECT_NOT_FOUND;
5321	}
5322
5323	HRESULT Machine::getHardDiskAttachmentsOfController(CBSTR aName,
5324	HDData::AttachmentList &atts)
5325	{
5326	AutoCaller autoCaller(this);
5327	CheckComRCReturnRC(autoCaller.rc());
5328
5329	AutoReadLock alock(this);
5330
5331	for (HDData::AttachmentList::iterator it = mHDData->mAttachments.begin();
5332	it != mHDData->mAttachments.end(); ++it)
5333	{
5334	if ((*it)->controller() == aName)
5335	atts.push_back(*it);
5336	}
5337
5338	return S_OK;
5339	}
5340
5341	/**
5342	* Helper for #saveSettings. Cares about renaming the settings directory and
5343	* file if the machine name was changed and about creating a new settings file
5344	* if this is a new machine.
5345	*
5346	* @note Must be never called directly but only from #saveSettings().
5347	*
5348	* @param aRenamed receives \|true\| if the name was changed and the settings
5349	* file was renamed as a result, or \|false\| otherwise. The
5350	* value makes sense only on success.
5351	* @param aNew receives \|true\| if a virgin settings file was created.
5352	*/
5353	HRESULT Machine::prepareSaveSettings(bool &aRenamed,
5354	bool &aNew)
5355	{
5356	/* Note: tecnhically, mParent needs to be locked only when the machine is
5357	* registered (see prepareSaveSettings() for details) but we don't
5358	* currently differentiate it in callers of saveSettings() so we don't
5359	* make difference here too. */
5360	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
5361	AssertReturn(isWriteLockOnCurrentThread(), E_FAIL);
5362
5363	HRESULT rc = S_OK;
5364
5365	aRenamed = false;
5366
5367	/* if we're ready and isConfigLocked() is FALSE then it means
5368	* that no config file exists yet (we will create a virgin one) */
5369	aNew = !mData->m_pMachineConfigFile->fileExists();
5370
5371	/* attempt to rename the settings file if machine name is changed */
5372	if ( mUserData->mNameSync
5373	&& mUserData.isBackedUp()
5374	&& mUserData.backedUpData()->mName != mUserData->mName
5375	)
5376	{
5377	aRenamed = true;
5378
5379	bool dirRenamed = false;
5380	bool fileRenamed = false;
5381
5382	Utf8Str configFile, newConfigFile;
5383	Utf8Str configDir, newConfigDir;
5384
5385	do
5386	{
5387	int vrc = VINF_SUCCESS;
5388
5389	Utf8Str name = mUserData.backedUpData()->mName;
5390	Utf8Str newName = mUserData->mName;
5391
5392	configFile = mData->m_strConfigFileFull;
5393
5394	/* first, rename the directory if it matches the machine name */
5395	configDir = configFile;
5396	configDir.stripFilename();
5397	newConfigDir = configDir;
5398	if (!strcmp(RTPathFilename(configDir.c_str()), name.c_str()))
5399	{
5400	newConfigDir.stripFilename();
5401	newConfigDir = Utf8StrFmt ("%s%c%s",
5402	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5403	/* new dir and old dir cannot be equal here because of 'if'
5404	* above and because name != newName */
5405	Assert (configDir != newConfigDir);
5406	if (!aNew)
5407	{
5408	/* perform real rename only if the machine is not new */
5409	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5410	if (RT_FAILURE(vrc))
5411	{
5412	rc = setError(E_FAIL,
5413	tr("Could not rename the directory '%s' to '%s' to save the settings file (%Rrc)"),
5414	configDir.raw(),
5415	newConfigDir.raw(),
5416	vrc);
5417	break;
5418	}
5419	dirRenamed = true;
5420	}
5421	}
5422
5423	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
5424	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5425
5426	/* then try to rename the settings file itself */
5427	if (newConfigFile != configFile)
5428	{
5429	/* get the path to old settings file in renamed directory */
5430	configFile = Utf8StrFmt("%s%c%s",
5431	newConfigDir.raw(),
5432	RTPATH_DELIMITER,
5433	RTPathFilename(configFile.c_str()));
5434	if (!aNew)
5435	{
5436	/* perform real rename only if the machine is not new */
5437	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
5438	if (RT_FAILURE(vrc))
5439	{
5440	rc = setError(E_FAIL,
5441	tr("Could not rename the settings file '%s' to '%s' (%Rrc)"),
5442	configFile.raw(),
5443	newConfigFile.raw(),
5444	vrc);
5445	break;
5446	}
5447	fileRenamed = true;
5448	}
5449	}
5450
5451	/* update m_strConfigFileFull amd mConfigFile */
5452	Utf8Str oldConfigFileFull = mData->m_strConfigFileFull;
5453	Utf8Str oldConfigFile = mData->m_strConfigFile;
5454	mData->m_strConfigFileFull = newConfigFile;
5455	/* try to get the relative path for mConfigFile */
5456	Utf8Str path = newConfigFile;
5457	mParent->calculateRelativePath (path, path);
5458	mData->m_strConfigFile = path;
5459
5460	/* last, try to update the global settings with the new path */
5461	if (mData->mRegistered)
5462	{
5463	rc = mParent->updateSettings(configDir.c_str(), newConfigDir.c_str());
5464	if (FAILED(rc))
5465	{
5466	/* revert to old values */
5467	mData->m_strConfigFileFull = oldConfigFileFull;
5468	mData->m_strConfigFile = oldConfigFile;
5469	break;
5470	}
5471	}
5472
5473	/* update the snapshot folder */
5474	path = mUserData->mSnapshotFolderFull;
5475	if (RTPathStartsWith(path.c_str(), configDir.c_str()))
5476	{
5477	path = Utf8StrFmt("%s%s", newConfigDir.raw(),
5478	path.raw() + configDir.length());
5479	mUserData->mSnapshotFolderFull = path;
5480	calculateRelativePath (path, path);
5481	mUserData->mSnapshotFolder = path;
5482	}
5483
5484	/* update the saved state file path */
5485	path = mSSData->mStateFilePath;
5486	if (RTPathStartsWith(path.c_str(), configDir.c_str()))
5487	{
5488	path = Utf8StrFmt("%s%s", newConfigDir.raw(),
5489	path.raw() + configDir.length());
5490	mSSData->mStateFilePath = path;
5491	}
5492
5493	/* Update saved state file paths of all online snapshots.
5494	* Note that saveSettings() will recognize name change
5495	* and will save all snapshots in this case. */
5496	if (mData->mFirstSnapshot)
5497	mData->mFirstSnapshot->updateSavedStatePaths(configDir.c_str(),
5498	newConfigDir.c_str());
5499	}
5500	while (0);
5501
5502	if (FAILED(rc))
5503	{
5504	/* silently try to rename everything back */
5505	if (fileRenamed)
5506	RTFileRename(newConfigFile.raw(), configFile.raw(), 0);
5507	if (dirRenamed)
5508	RTPathRename(newConfigDir.raw(), configDir.raw(), 0);
5509	}
5510
5511	CheckComRCReturnRC(rc);
5512	}
5513
5514	if (aNew)
5515	{
5516	/* create a virgin config file */
5517	int vrc = VINF_SUCCESS;
5518
5519	/* ensure the settings directory exists */
5520	Utf8Str path(mData->m_strConfigFileFull);
5521	path.stripFilename();
5522	if (!RTDirExists(path.c_str()))
5523	{
5524	vrc = RTDirCreateFullPath(path.c_str(), 0777);
5525	if (RT_FAILURE(vrc))
5526	{
5527	return setError(E_FAIL,
5528	tr("Could not create a directory '%s' to save the settings file (%Rrc)"),
5529	path.raw(),
5530	vrc);
5531	}
5532	}
5533
5534	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
5535	path = Utf8Str(mData->m_strConfigFileFull);
5536	vrc = RTFileOpen(&mData->mHandleCfgFile, path.c_str(),
5537	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
5538	RTFILE_O_DENY_WRITE);
5539	if (RT_FAILURE(vrc))
5540	{
5541	mData->mHandleCfgFile = NIL_RTFILE;
5542	return setError(E_FAIL,
5543	tr("Could not create the settings file '%s' (%Rrc)"),
5544	path.raw(),
5545	vrc);
5546	}
5547	RTFileClose(mData->mHandleCfgFile);
5548	}
5549
5550	return rc;
5551	}
5552
5553	/**
5554	* Saves and commits machine data, user data and hardware data.
5555	*
5556	* Note that on failure, the data remains uncommitted.
5557	*
5558	* @a aFlags may combine the following flags:
5559	*
5560	* - SaveS_ResetCurStateModified: Resets mData->mCurrentStateModified to FALSE.
5561	* Used when saving settings after an operation that makes them 100%
5562	* correspond to the settings from the current snapshot.
5563	* - SaveS_InformCallbacksAnyway: Callbacks will be informed even if
5564	* #isReallyModified() returns false. This is necessary for cases when we
5565	* change machine data diectly, not through the backup()/commit() mechanism.
5566	*
5567	* @note Must be called from under mParent write lock (sometimes needed by
5568	* #prepareSaveSettings()) and this object's write lock. Locks children for
5569	* writing. There is one exception when mParent is unused and therefore may be
5570	* left unlocked: if this machine is an unregistered one.
5571	*/
5572	HRESULT Machine::saveSettings(int aFlags /= 0/)
5573	{
5574	LogFlowThisFuncEnter();
5575
5576	/* Note: tecnhically, mParent needs to be locked only when the machine is
5577	* registered (see prepareSaveSettings() for details) but we don't
5578	* currently differentiate it in callers of saveSettings() so we don't
5579	* make difference here too. */
5580	AssertReturn(mParent->isWriteLockOnCurrentThread(), E_FAIL);
5581	AssertReturn(isWriteLockOnCurrentThread(), E_FAIL);
5582
5583	/* make sure child objects are unable to modify the settings while we are
5584	* saving them */
5585	ensureNoStateDependencies();
5586
5587	AssertReturn(mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5588
5589	BOOL currentStateModified = mData->mCurrentStateModified;
5590	bool settingsModified;
5591
5592	if (!(aFlags & SaveS_ResetCurStateModified) && !currentStateModified)
5593	{
5594	/* We ignore changes to user data when setting mCurrentStateModified
5595	* because the current state will not differ from the current snapshot
5596	* if only user data has been changed (user data is shared by all
5597	* snapshots). */
5598	currentStateModified = isReallyModified (true /* aIgnoreUserData */);
5599	settingsModified = mUserData.hasActualChanges() \|\| currentStateModified;
5600	}
5601	else
5602	{
5603	if (aFlags & SaveS_ResetCurStateModified)
5604	currentStateModified = FALSE;
5605	settingsModified = isReallyModified();
5606	}
5607
5608	HRESULT rc = S_OK;
5609
5610	/* First, prepare to save settings. It will care about renaming the
5611	* settings directory and file if the machine name was changed and about
5612	* creating a new settings file if this is a new machine. */
5613	bool isRenamed = false;
5614	bool isNew = false;
5615	rc = prepareSaveSettings(isRenamed, isNew);
5616	CheckComRCReturnRC(rc);
5617
5618	try
5619	{
5620	mData->m_pMachineConfigFile->uuid = mData->mUuid;
5621	mData->m_pMachineConfigFile->strName = mUserData->mName;
5622	mData->m_pMachineConfigFile->fNameSync = !!mUserData->mNameSync;
5623	mData->m_pMachineConfigFile->strDescription = mUserData->mDescription;
5624	mData->m_pMachineConfigFile->strOsType = mUserData->mOSTypeId;
5625
5626	if ( mData->mMachineState == MachineState_Saved
5627	\|\| mData->mMachineState == MachineState_Restoring
5628	)
5629	{
5630	Assert(!mSSData->mStateFilePath.isEmpty());
5631	/* try to make the file name relative to the settings file dir */
5632	Utf8Str stateFilePath = mSSData->mStateFilePath;
5633	calculateRelativePath(stateFilePath, stateFilePath);
5634
5635	mData->m_pMachineConfigFile->strStateFile = stateFilePath;
5636	}
5637	else
5638	{
5639	Assert(mSSData->mStateFilePath.isNull());
5640	mData->m_pMachineConfigFile->strStateFile.setNull();
5641	}
5642
5643	if (mData->mCurrentSnapshot)
5644	mData->m_pMachineConfigFile->uuidCurrentSnapshot = mData->mCurrentSnapshot->getId();
5645	else
5646	mData->m_pMachineConfigFile->uuidCurrentSnapshot.clear();
5647
5648	mData->m_pMachineConfigFile->strSnapshotFolder = mUserData->mSnapshotFolder;
5649	mData->m_pMachineConfigFile->fCurrentStateModified = !!currentStateModified;
5650	mData->m_pMachineConfigFile->timeLastStateChange = mData->mLastStateChange;
5651	mData->m_pMachineConfigFile->fAborted = (mData->mMachineState == MachineState_Aborted);
5652
5653	rc = saveHardware(mData->m_pMachineConfigFile->hardwareMachine);
5654	CheckComRCThrowRC(rc);
5655
5656	rc = saveStorageControllers(mData->m_pMachineConfigFile->storageMachine);
5657	CheckComRCThrowRC(rc);
5658
5659	// save snapshots
5660	rc = saveAllSnapshots();
5661	CheckComRCThrowRC(rc);
5662
5663	// now spit it all out
5664	mData->m_pMachineConfigFile->write(mData->m_strConfigFileFull);
5665	}
5666	catch (HRESULT err)
5667	{
5668	/* we assume that error info is set by the thrower */
5669	rc = err;
5670	}
5671	catch (...)
5672	{
5673	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5674	}
5675
5676	if (SUCCEEDED(rc))
5677	{
5678	commit();
5679
5680	/* memorize the new modified state */
5681	mData->mCurrentStateModified = currentStateModified;
5682	}
5683
5684	if (settingsModified \|\| (aFlags & SaveS_InformCallbacksAnyway))
5685	{
5686	/* Fire the data change event, even on failure (since we've already
5687	* committed all data). This is done only for SessionMachines because
5688	* mutable Machine instances are always not registered (i.e. private
5689	* to the client process that creates them) and thus don't need to
5690	* inform callbacks. */
5691	if (mType == IsSessionMachine)
5692	mParent->onMachineDataChange(mData->mUuid);
5693	}
5694
5695	LogFlowThisFunc(("rc=%08X\n", rc));
5696	LogFlowThisFuncLeave();
5697	return rc;
5698	}
5699
5700	HRESULT Machine::saveAllSnapshots()
5701	{
5702	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
5703
5704	HRESULT rc = S_OK;
5705
5706	try
5707	{
5708	mData->m_pMachineConfigFile->llFirstSnapshot.clear();
5709
5710	if (mData->mFirstSnapshot)
5711	{
5712	settings::Snapshot snapNew;
5713	mData->m_pMachineConfigFile->llFirstSnapshot.push_back(snapNew);
5714
5715	// get reference to the fresh copy of the snapshot on the list and
5716	// work on that copy directly to avoid excessive copying later
5717	settings::Snapshot &snap = mData->m_pMachineConfigFile->llFirstSnapshot.front();
5718
5719	rc = mData->mFirstSnapshot->saveSnapshot(snap, false /aAttrsOnly/);
5720	CheckComRCThrowRC(rc);
5721	}
5722
5723	// if (mType == IsSessionMachine)
5724	// mParent->onMachineDataChange(mData->mUuid); @todo is this necessary?
5725
5726	}
5727	catch (HRESULT err)
5728	{
5729	/* we assume that error info is set by the thrower */
5730	rc = err;
5731	}
5732	catch (...)
5733	{
5734	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
5735	}
5736
5737	return rc;
5738	}
5739
5740	/**
5741	* Saves the VM hardware configuration. It is assumed that the
5742	* given node is empty.
5743	*
5744	* @param aNode <Hardware> node to save the VM hardware confguration to.
5745	*/
5746	HRESULT Machine::saveHardware(settings::Hardware &data)
5747	{
5748	HRESULT rc = S_OK;
5749
5750	try
5751	{
5752	/* The hardware version attribute (optional).
5753	Automatically upgrade from 1 to 2 when there is no saved state. (ugly!) */
5754	if ( mHWData->mHWVersion == "1"
5755	&& mSSData->mStateFilePath.isEmpty()
5756	)
5757	mHWData->mHWVersion = "2"; /** @todo Is this safe, to update mHWVersion here? If not some other point needs to be found where this can be done. */
5758
5759	data.strVersion = mHWData->mHWVersion;
5760
5761	// CPU
5762	data.fHardwareVirt = !!mHWData->mHWVirtExEnabled;
5763	data.fNestedPaging = !!mHWData->mHWVirtExNestedPagingEnabled;
5764	data.fVPID = !!mHWData->mHWVirtExVPIDEnabled;
5765	data.fPAE = !!mHWData->mPAEEnabled;
5766
5767	data.cCPUs = mHWData->mCPUCount;
5768
5769	// memory
5770	data.ulMemorySizeMB = mHWData->mMemorySize;
5771
5772	// boot order
5773	data.mapBootOrder.clear();
5774	for (size_t i = 0;
5775	i < RT_ELEMENTS(mHWData->mBootOrder);
5776	++i)
5777	data.mapBootOrder[i] = mHWData->mBootOrder[i];
5778
5779	// display
5780	data.ulVRAMSizeMB = mHWData->mVRAMSize;
5781	data.cMonitors = mHWData->mMonitorCount;
5782	data.fAccelerate3D = !!mHWData->mAccelerate3DEnabled;
5783	data.fAccelerate2DVideo = !!mHWData->mAccelerate2DVideoEnabled;
5784
5785	#ifdef VBOX_WITH_VRDP
5786	/* VRDP settings (optional) */
5787	rc = mVRDPServer->saveSettings(data.vrdpSettings);
5788	CheckComRCThrowRC(rc);
5789	#endif
5790
5791	/* BIOS (required) */
5792	rc = mBIOSSettings->saveSettings(data.biosSettings);
5793	CheckComRCThrowRC(rc);
5794
5795	/* DVD drive (required) */
5796	rc = mDVDDrive->saveSettings(data.dvdDrive);
5797	CheckComRCThrowRC(rc);
5798
5799	/* Flooppy drive (required) */
5800	rc = mFloppyDrive->saveSettings(data.floppyDrive);
5801	CheckComRCThrowRC(rc);
5802
5803	/* USB Controller (required) */
5804	rc = mUSBController->saveSettings(data.usbController);
5805	CheckComRCThrowRC(rc);
5806
5807	/* Network adapters (required) */
5808	data.llNetworkAdapters.clear();
5809	for (ULONG slot = 0;
5810	slot < RT_ELEMENTS(mNetworkAdapters);
5811	++slot)
5812	{
5813	settings::NetworkAdapter nic;
5814	nic.ulSlot = slot;
5815	rc = mNetworkAdapters[slot]->saveSettings(nic);
5816	CheckComRCThrowRC(rc);
5817
5818	data.llNetworkAdapters.push_back(nic);
5819	}
5820
5821	/* Serial ports */
5822	data.llSerialPorts.clear();
5823	for (ULONG slot = 0;
5824	slot < RT_ELEMENTS(mSerialPorts);
5825	++slot)
5826	{
5827	settings::SerialPort s;
5828	s.ulSlot = slot;
5829	rc = mSerialPorts[slot]->saveSettings(s);
5830	CheckComRCReturnRC (rc);
5831
5832	data.llSerialPorts.push_back(s);
5833	}
5834
5835	/* Parallel ports */
5836	data.llParallelPorts.clear();
5837	for (ULONG slot = 0;
5838	slot < RT_ELEMENTS(mParallelPorts);
5839	++slot)
5840	{
5841	settings::ParallelPort p;
5842	p.ulSlot = slot;
5843	rc = mParallelPorts[slot]->saveSettings(p);
5844	CheckComRCReturnRC (rc);
5845
5846	data.llParallelPorts.push_back(p);
5847	}
5848
5849	/* Audio adapter */
5850	rc = mAudioAdapter->saveSettings(data.audioAdapter);
5851	CheckComRCReturnRC (rc);
5852
5853	/* Shared folders */
5854	data.llSharedFolders.clear();
5855	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
5856	it != mHWData->mSharedFolders.end();
5857	++it)
5858	{
5859	ComObjPtr<SharedFolder> pFolder = *it;
5860	settings::SharedFolder sf;
5861	sf.strName = pFolder->name();
5862	sf.strHostPath = pFolder->hostPath();
5863	sf.fWritable = !!pFolder->writable();
5864
5865	data.llSharedFolders.push_back(sf);
5866	}
5867
5868	// clipboard
5869	data.clipboardMode = mHWData->mClipboardMode;
5870
5871	/* Guest */
5872	data.ulMemoryBalloonSize = mHWData->mMemoryBalloonSize;
5873	data.ulStatisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
5874
5875	// guest properties
5876	data.llGuestProperties.clear();
5877	#ifdef VBOX_WITH_GUEST_PROPS
5878	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
5879	it != mHWData->mGuestProperties.end();
5880	++it)
5881	{
5882	HWData::GuestProperty property = *it;
5883
5884	settings::GuestProperty prop;
5885	prop.strName = property.strName;
5886	prop.strValue = property.strValue;
5887	prop.timestamp = property.mTimestamp;
5888	char szFlags[guestProp::MAX_FLAGS_LEN + 1];
5889	guestProp::writeFlags(property.mFlags, szFlags);
5890	prop.strFlags = szFlags;
5891
5892	data.llGuestProperties.push_back(prop);
5893	}
5894
5895	data.strNotificationPatterns = mHWData->mGuestPropertyNotificationPatterns;
5896	}
5897	catch(std::bad_alloc &)
5898	{
5899	return E_OUTOFMEMORY;
5900	}
5901	#endif /* VBOX_WITH_GUEST_PROPS defined */
5902
5903	AssertComRC(rc);
5904	return rc;
5905	}
5906
5907	/**
5908	* Saves the storage controller configuration.
5909	*
5910	* @param aNode <StorageControllers> node to save the VM hardware confguration to.
5911	*/
5912	HRESULT Machine::saveStorageControllers(settings::Storage &data)
5913	{
5914	data.llStorageControllers.clear();
5915
5916	for (StorageControllerList::const_iterator it = mStorageControllers->begin();
5917	it != mStorageControllers->end();
5918	++it)
5919	{
5920	HRESULT rc;
5921	ComObjPtr<StorageController> pCtl = *it;
5922
5923	settings::StorageController ctl;
5924	ctl.strName = pCtl->name();
5925	ctl.controllerType = pCtl->controllerType();
5926	ctl.storageBus = pCtl->storageBus();
5927
5928	/* Save the port count. */
5929	ULONG portCount;
5930	rc = pCtl->COMGETTER(PortCount)(&portCount);
5931	ComAssertRCRet(rc, rc);
5932	ctl.ulPortCount = portCount;
5933
5934	/* Save IDE emulation settings. */
5935	if (ctl.controllerType == StorageControllerType_IntelAhci)
5936	{
5937	if ( (FAILED(rc = pCtl->GetIDEEmulationPort(0, (LONG*)&ctl.lIDE0MasterEmulationPort)))
5938	\|\| (FAILED(rc = pCtl->GetIDEEmulationPort(1, (LONG*)&ctl.lIDE0SlaveEmulationPort)))
5939	\|\| (FAILED(rc = pCtl->GetIDEEmulationPort(2, (LONG*)&ctl.lIDE1MasterEmulationPort)))
5940	\|\| (FAILED(rc = pCtl->GetIDEEmulationPort(3, (LONG*)&ctl.lIDE1SlaveEmulationPort)))
5941	)
5942	ComAssertRCRet(rc, rc);
5943	}
5944
5945	/* save the devices now. */
5946	rc = saveStorageDevices(pCtl, ctl);
5947	ComAssertRCRet(rc, rc);
5948
5949	data.llStorageControllers.push_back(ctl);
5950	}
5951
5952	return S_OK;
5953	}
5954
5955	/**
5956	* Saves the hard disk confguration.
5957	* It is assumed that the given node is empty.
5958	*
5959	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
5960	*/
5961	HRESULT Machine::saveStorageDevices(ComObjPtr<StorageController> aStorageController,
5962	settings::StorageController &data)
5963	{
5964	using namespace settings;
5965
5966	HDData::AttachmentList atts;
5967
5968	HRESULT rc = getHardDiskAttachmentsOfController(Bstr(aStorageController->name()), atts);
5969	CheckComRCReturnRC (rc);
5970
5971	data.llAttachedDevices.clear();
5972	for (HDData::AttachmentList::const_iterator it = atts.begin();
5973	it != atts.end();
5974	++it)
5975	{
5976	settings::AttachedDevice dev;
5977
5978	dev.type = settings::AttachedDevice::HardDisk;
5979	dev.lPort = (*it)->port();
5980	dev.lDevice = (*it)->device();
5981	dev.uuid = (*it)->hardDisk()->id();
5982
5983	data.llAttachedDevices.push_back(dev);
5984	}
5985
5986	return S_OK;
5987	}
5988
5989	/**
5990	* Saves machine state settings as defined by aFlags
5991	* (SaveSTS_* values).
5992	*
5993	* @param aFlags Combination of SaveSTS_* flags.
5994	*
5995	* @note Locks objects for writing.
5996	*/
5997	HRESULT Machine::saveStateSettings(int aFlags)
5998	{
5999	if (aFlags == 0)
6000	return S_OK;
6001
6002	AutoCaller autoCaller (this);
6003	AssertComRCReturn(autoCaller.rc(), autoCaller.rc());
6004
6005	/* This object's write lock is also necessary to serialize file access
6006	* (prevent concurrent reads and writes) */
6007	AutoWriteLock alock(this);
6008
6009	HRESULT rc = S_OK;
6010
6011	Assert(mData->m_pMachineConfigFile);
6012
6013	try
6014	{
6015	if (aFlags & SaveSTS_CurStateModified)
6016	mData->m_pMachineConfigFile->fCurrentStateModified = true;
6017
6018	if (aFlags & SaveSTS_StateFilePath)
6019	{
6020	if (mSSData->mStateFilePath)
6021	{
6022	/* try to make the file name relative to the settings file dir */
6023	Utf8Str stateFilePath = mSSData->mStateFilePath;
6024	calculateRelativePath(stateFilePath, stateFilePath);
6025	mData->m_pMachineConfigFile->strStateFile = stateFilePath;
6026	}
6027	else
6028	mData->m_pMachineConfigFile->strStateFile.setNull();
6029	}
6030
6031	if (aFlags & SaveSTS_StateTimeStamp)
6032	{
6033	Assert( mData->mMachineState != MachineState_Aborted
6034	\|\| mSSData->mStateFilePath.isNull());
6035
6036	mData->m_pMachineConfigFile->timeLastStateChange = mData->mLastStateChange;
6037
6038	mData->m_pMachineConfigFile->fAborted = (mData->mMachineState == MachineState_Aborted);
6039	}
6040
6041	mData->m_pMachineConfigFile->write(mData->m_strConfigFileFull);
6042	}
6043	catch (...)
6044	{
6045	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6046	}
6047
6048	return rc;
6049	}
6050
6051	/**
6052	* Creates differencing hard disks for all normal hard disks attached to this
6053	* machine and a new set of attachments to refer to created disks.
6054	*
6055	* Used when taking a snapshot or when discarding the current state.
6056	*
6057	* This method assumes that mHDData contains the original hard disk attachments
6058	* it needs to create diffs for. On success, these attachments will be replaced
6059	* with the created diffs. On failure, #deleteImplicitDiffs() is implicitly
6060	* called to delete created diffs which will also rollback mHDData and restore
6061	* whatever was backed up before calling this method.
6062	*
6063	* Attachments with non-normal hard disks are left as is.
6064	*
6065	* If @a aOnline is @c false then the original hard disks that require implicit
6066	* diffs will be locked for reading. Otherwise it is assumed that they are
6067	* already locked for writing (when the VM was started). Note that in the latter
6068	* case it is responsibility of the caller to lock the newly created diffs for
6069	* writing if this method succeeds.
6070	*
6071	* @param aFolder Folder where to create diff hard disks.
6072	* @param aProgress Progress object to run (must contain at least as
6073	* many operations left as the number of hard disks
6074	* attached).
6075	* @param aOnline Whether the VM was online prior to this operation.
6076	*
6077	* @note The progress object is not marked as completed, neither on success nor
6078	* on failure. This is a responsibility of the caller.
6079	*
6080	* @note Locks this object for writing.
6081	*/
6082	HRESULT Machine::createImplicitDiffs (const Bstr &aFolder,
6083	ComObjPtr<Progress> &aProgress,
6084	bool aOnline)
6085	{
6086	AssertReturn(!aFolder.isEmpty(), E_FAIL);
6087
6088	AutoCaller autoCaller(this);
6089	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6090
6091	AutoWriteLock alock(this);
6092
6093	/* must be in a protective state because we leave the lock below */
6094	AssertReturn(mData->mMachineState == MachineState_Saving \|\|
6095	mData->mMachineState == MachineState_Discarding, E_FAIL);
6096
6097	HRESULT rc = S_OK;
6098
6099	typedef std::list< ComObjPtr<HardDisk> > LockedMedia;
6100	LockedMedia lockedMedia;
6101
6102	try
6103	{
6104	if (!aOnline)
6105	{
6106	/* lock all attached hard disks early to detect "in use"
6107	* situations before creating actual diffs */
6108	for (HDData::AttachmentList::const_iterator
6109	it = mHDData->mAttachments.begin();
6110	it != mHDData->mAttachments.end();
6111	++ it)
6112	{
6113	ComObjPtr<HardDiskAttachment> hda = *it;
6114	ComObjPtr<HardDisk> hd = hda->hardDisk();
6115
6116	rc = hd->LockRead (NULL);
6117	CheckComRCThrowRC(rc);
6118
6119	lockedMedia.push_back (hd);
6120	}
6121	}
6122
6123	/* remember the current list (note that we don't use backup() since
6124	* mHDData may be already backed up) */
6125	HDData::AttachmentList atts = mHDData->mAttachments;
6126
6127	/* start from scratch */
6128	mHDData->mAttachments.clear();
6129
6130	/* go through remembered attachments and create diffs for normal hard
6131	* disks and attach them */
6132
6133	for (HDData::AttachmentList::const_iterator
6134	it = atts.begin(); it != atts.end(); ++ it)
6135	{
6136	ComObjPtr<HardDiskAttachment> hda = *it;
6137	ComObjPtr<HardDisk> hd = hda->hardDisk();
6138
6139	/* type cannot be changed while attached => no need to lock */
6140	if (hd->type() != HardDiskType_Normal)
6141	{
6142	/* copy the attachment as is */
6143
6144	Assert (hd->type() == HardDiskType_Writethrough);
6145
6146	rc = aProgress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
6147	hd->root()->name().raw()),
6148	1); // weight
6149	CheckComRCThrowRC(rc);
6150
6151	mHDData->mAttachments.push_back (hda);
6152	continue;
6153	}
6154
6155	/* need a diff */
6156
6157	rc = aProgress->setNextOperation(BstrFmt(tr("Creating differencing hard disk for '%s'"),
6158	hd->root()->name().raw()),
6159	1); // weight
6160	CheckComRCThrowRC(rc);
6161
6162	ComObjPtr<HardDisk> diff;
6163	diff.createObject();
6164	rc = diff->init(mParent,
6165	hd->preferredDiffFormat(),
6166	BstrFmt("%ls"RTPATH_SLASH_STR,
6167	mUserData->mSnapshotFolderFull.raw()));
6168	CheckComRCThrowRC(rc);
6169
6170	/* leave the lock before the potentially lengthy operation */
6171	alock.leave();
6172
6173	rc = hd->createDiffStorageAndWait (diff, HardDiskVariant_Standard,
6174	&aProgress);
6175
6176	alock.enter();
6177
6178	CheckComRCThrowRC(rc);
6179
6180	rc = diff->attachTo (mData->mUuid);
6181	AssertComRCThrowRC (rc);
6182
6183	/* add a new attachment */
6184	ComObjPtr<HardDiskAttachment> attachment;
6185	attachment.createObject();
6186	rc = attachment->init (diff, hda->controller(), hda->port(),
6187	hda->device(), true /* aImplicit */);
6188	CheckComRCThrowRC(rc);
6189
6190	mHDData->mAttachments.push_back (attachment);
6191	}
6192	}
6193	catch (HRESULT aRC) { rc = aRC; }
6194
6195	/* unlock all hard disks we locked */
6196	if (!aOnline)
6197	{
6198	ErrorInfoKeeper eik;
6199
6200	for (LockedMedia::const_iterator it = lockedMedia.begin();
6201	it != lockedMedia.end(); ++ it)
6202	{
6203	HRESULT rc2 = (*it)->UnlockRead (NULL);
6204	AssertComRC(rc2);
6205	}
6206	}
6207
6208	if (FAILED(rc))
6209	{
6210	MultiResultRef mrc (rc);
6211
6212	mrc = deleteImplicitDiffs();
6213	}
6214
6215	return rc;
6216	}
6217
6218	/**
6219	* Deletes implicit differencing hard disks created either by
6220	* #createImplicitDiffs() or by #AttachHardDisk() and rolls back mHDData.
6221	*
6222	* Note that to delete hard disks created by #AttachHardDisk() this method is
6223	* called from #fixupHardDisks() when the changes are rolled back.
6224	*
6225	* @note Locks this object for writing.
6226	*/
6227	HRESULT Machine::deleteImplicitDiffs()
6228	{
6229	AutoCaller autoCaller(this);
6230	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6231
6232	AutoWriteLock alock(this);
6233
6234	AssertReturn(mHDData.isBackedUp(), E_FAIL);
6235
6236	HRESULT rc = S_OK;
6237
6238	HDData::AttachmentList implicitAtts;
6239
6240	const HDData::AttachmentList &oldAtts =
6241	mHDData.backedUpData()->mAttachments;
6242
6243	/* enumerate new attachments */
6244	for (HDData::AttachmentList::const_iterator
6245	it = mHDData->mAttachments.begin();
6246	it != mHDData->mAttachments.end(); ++ it)
6247	{
6248	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
6249
6250	if ((*it)->isImplicit())
6251	{
6252	/* deassociate and mark for deletion */
6253	rc = hd->detachFrom (mData->mUuid);
6254	AssertComRC(rc);
6255	implicitAtts.push_back (*it);
6256	continue;
6257	}
6258
6259	/* was this hard disk attached before? */
6260	HDData::AttachmentList::const_iterator oldIt =
6261	std::find_if(oldAtts.begin(), oldAtts.end(),
6262	HardDiskAttachment::RefersTo (hd));
6263	if (oldIt == oldAtts.end())
6264	{
6265	/* no: de-associate */
6266	rc = hd->detachFrom (mData->mUuid);
6267	AssertComRC(rc);
6268	continue;
6269	}
6270	}
6271
6272	/* rollback hard disk changes */
6273	mHDData.rollback();
6274
6275	MultiResult mrc (S_OK);
6276
6277	/* delete unused implicit diffs */
6278	if (implicitAtts.size() != 0)
6279	{
6280	/* will leave the lock before the potentially lengthy
6281	* operation, so protect with the special state (unless already
6282	* protected) */
6283	MachineState_T oldState = mData->mMachineState;
6284	if (oldState != MachineState_Saving &&
6285	oldState != MachineState_Discarding)
6286	{
6287	setMachineState (MachineState_SettingUp);
6288	}
6289
6290	alock.leave();
6291
6292	for (HDData::AttachmentList::const_iterator
6293	it = implicitAtts.begin();
6294	it != implicitAtts.end(); ++ it)
6295	{
6296	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
6297
6298	mrc = hd->deleteStorageAndWait();
6299	}
6300
6301	alock.enter();
6302
6303	if (mData->mMachineState == MachineState_SettingUp)
6304	{
6305	setMachineState (oldState);
6306	}
6307	}
6308
6309	return mrc;
6310	}
6311
6312	/**
6313	* Perform deferred hard disk detachments on success and deletion of implicitly
6314	* created diffs on failure.
6315	*
6316	* Does nothing if the hard disk attachment data (mHDData) is not changed (not
6317	* backed up).
6318	*
6319	* When the data is backed up, this method will commit mHDData if @a aCommit is
6320	* @c true and rollback it otherwise before returning.
6321	*
6322	* If @a aOnline is @c true then this method called with @a aCommit = @c true
6323	* will also unlock the old hard disks for which the new implicit diffs were
6324	* created and will lock these new diffs for writing. When @a aCommit is @c
6325	* false, this argument is ignored.
6326	*
6327	* @param aCommit @c true if called on success.
6328	* @param aOnline Whether the VM was online prior to this operation.
6329	*
6330	* @note Locks this object for writing!
6331	*/
6332	void Machine::fixupHardDisks(bool aCommit, bool aOnline /= false/)
6333	{
6334	AutoCaller autoCaller(this);
6335	AssertComRCReturnVoid (autoCaller.rc());
6336
6337	AutoWriteLock alock(this);
6338
6339	/* no attach/detach operations -- nothing to do */
6340	if (!mHDData.isBackedUp())
6341	return;
6342
6343	HRESULT rc = S_OK;
6344
6345	if (aCommit)
6346	{
6347	HDData::AttachmentList &oldAtts =
6348	mHDData.backedUpData()->mAttachments;
6349
6350	/* enumerate new attachments */
6351	for (HDData::AttachmentList::const_iterator
6352	it = mHDData->mAttachments.begin();
6353	it != mHDData->mAttachments.end(); ++ it)
6354	{
6355	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
6356
6357	if ((*it)->isImplicit())
6358	{
6359	/* convert implicit attachment to normal */
6360	(*it)->setImplicit (false);
6361
6362	if (aOnline)
6363	{
6364	rc = hd->LockWrite (NULL);
6365	AssertComRC(rc);
6366
6367	mData->mSession.mLockedMedia.push_back (
6368	Data::Session::LockedMedia::value_type (
6369	ComPtr<IHardDisk> (hd), true));
6370
6371	/* also, relock the old hard disk which is a base for the
6372	* new diff for reading if the VM is online */
6373
6374	ComObjPtr<HardDisk> parent = hd->parent();
6375	/* make the relock atomic */
6376	AutoWriteLock parentLock (parent);
6377	rc = parent->UnlockWrite (NULL);
6378	AssertComRC(rc);
6379	rc = parent->LockRead (NULL);
6380	AssertComRC(rc);
6381
6382	/* XXX actually we should replace the old entry in that
6383	* vector (write lock => read lock) but this would take
6384	* some effort. So lets just ignore the error code in
6385	* SessionMachine::unlockMedia(). */
6386	mData->mSession.mLockedMedia.push_back (
6387	Data::Session::LockedMedia::value_type (
6388	ComPtr<IHardDisk> (parent), false));
6389	}
6390
6391	continue;
6392	}
6393
6394	/* was this hard disk attached before? */
6395	HDData::AttachmentList::iterator oldIt =
6396	std::find_if (oldAtts.begin(), oldAtts.end(),
6397	HardDiskAttachment::RefersTo (hd));
6398	if (oldIt != oldAtts.end())
6399	{
6400	/* yes: remove from old to avoid de-association */
6401	oldAtts.erase (oldIt);
6402	}
6403	}
6404
6405	/* enumerate remaining old attachments and de-associate from the
6406	* current machine state */
6407	for (HDData::AttachmentList::const_iterator it = oldAtts.begin();
6408	it != oldAtts.end(); ++ it)
6409	{
6410	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
6411
6412	/* now de-associate from the current machine state */
6413	rc = hd->detachFrom (mData->mUuid);
6414	AssertComRC(rc);
6415
6416	if (aOnline)
6417	{
6418	/* unlock since not used anymore */
6419	MediaState_T state;
6420	rc = hd->UnlockWrite (&state);
6421	/* the disk may be alredy relocked for reading above */
6422	Assert (SUCCEEDED(rc) \|\| state == MediaState_LockedRead);
6423	}
6424	}
6425
6426	/* commit the hard disk changes */
6427	mHDData.commit();
6428
6429	if (mType == IsSessionMachine)
6430	{
6431	/* attach new data to the primary machine and reshare it */
6432	mPeer->mHDData.attach (mHDData);
6433	}
6434	}
6435	else
6436	{
6437	deleteImplicitDiffs();
6438	}
6439
6440	return;
6441	}
6442
6443	/**
6444	* Returns true if the settings file is located in the directory named exactly
6445	* as the machine. This will be true if the machine settings structure was
6446	* created by default in #openConfigLoader().
6447	*
6448	* @param aSettingsDir if not NULL, the full machine settings file directory
6449	* name will be assigned there.
6450	*
6451	* @note Doesn't lock anything.
6452	* @note Not thread safe (must be called from this object's lock).
6453	*/
6454	bool Machine::isInOwnDir(Utf8Str aSettingsDir / = NULL */)
6455	{
6456	Utf8Str settingsDir = mData->m_strConfigFileFull;
6457	settingsDir.stripFilename();
6458	char *dirName = RTPathFilename(settingsDir.c_str());
6459
6460	AssertReturn(dirName, false);
6461
6462	/* if we don't rename anything on name change, return false shorlty */
6463	if (!mUserData->mNameSync)
6464	return false;
6465
6466	if (aSettingsDir)
6467	*aSettingsDir = settingsDir;
6468
6469	return Bstr (dirName) == mUserData->mName;
6470	}
6471
6472	/**
6473	* @note Locks objects for reading!
6474	*/
6475	bool Machine::isModified()
6476	{
6477	AutoCaller autoCaller(this);
6478	AssertComRCReturn (autoCaller.rc(), false);
6479
6480	AutoReadLock alock(this);
6481
6482	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
6483	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
6484	return true;
6485
6486	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
6487	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
6488	return true;
6489
6490	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
6491	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
6492	return true;
6493
6494	if (!mStorageControllers.isNull())
6495	{
6496	for (StorageControllerList::const_iterator it =
6497	mStorageControllers->begin();
6498	it != mStorageControllers->end();
6499	++ it)
6500	{
6501	if ((*it)->isModified())
6502	return true;
6503	}
6504	}
6505
6506	return
6507	mUserData.isBackedUp() \|\|
6508	mHWData.isBackedUp() \|\|
6509	mHDData.isBackedUp() \|\|
6510	mStorageControllers.isBackedUp() \|\|
6511	#ifdef VBOX_WITH_VRDP
6512	(mVRDPServer && mVRDPServer->isModified()) \|\|
6513	#endif
6514	(mDVDDrive && mDVDDrive->isModified()) \|\|
6515	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
6516	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
6517	(mUSBController && mUSBController->isModified()) \|\|
6518	(mBIOSSettings && mBIOSSettings->isModified());
6519	}
6520
6521	/**
6522	* Returns the logical OR of data.hasActualChanges() of this and all child
6523	* objects.
6524	*
6525	* @param aIgnoreUserData @c true to ignore changes to mUserData
6526	*
6527	* @note Locks objects for reading!
6528	*/
6529	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
6530	{
6531	AutoCaller autoCaller(this);
6532	AssertComRCReturn (autoCaller.rc(), false);
6533
6534	AutoReadLock alock(this);
6535
6536	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
6537	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
6538	return true;
6539
6540	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
6541	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
6542	return true;
6543
6544	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
6545	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
6546	return true;
6547
6548	if (!mStorageControllers.isBackedUp())
6549	{
6550	/* see whether any of the devices has changed its data */
6551	for (StorageControllerList::const_iterator
6552	it = mStorageControllers->begin();
6553	it != mStorageControllers->end();
6554	++ it)
6555	{
6556	if ((*it)->isReallyModified())
6557	return true;
6558	}
6559	}
6560	else
6561	{
6562	if (mStorageControllers->size() != mStorageControllers.backedUpData()->size())
6563	return true;
6564	}
6565
6566	return
6567	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
6568	mHWData.hasActualChanges() \|\|
6569	mHDData.hasActualChanges() \|\|
6570	mStorageControllers.hasActualChanges() \|\|
6571	#ifdef VBOX_WITH_VRDP
6572	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
6573	#endif
6574	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
6575	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
6576	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
6577	(mUSBController && mUSBController->isReallyModified()) \|\|
6578	(mBIOSSettings && mBIOSSettings->isReallyModified());
6579	}
6580
6581	/**
6582	* Discards all changes to machine settings.
6583	*
6584	* @param aNotify Whether to notify the direct session about changes or not.
6585	*
6586	* @note Locks objects for writing!
6587	*/
6588	void Machine::rollback (bool aNotify)
6589	{
6590	AutoCaller autoCaller(this);
6591	AssertComRCReturn (autoCaller.rc(), (void) 0);
6592
6593	AutoWriteLock alock(this);
6594
6595	/* check for changes in own data */
6596
6597	bool sharedFoldersChanged = false, storageChanged = false;
6598
6599	if (aNotify && mHWData.isBackedUp())
6600	{
6601	if (mHWData->mSharedFolders.size() !=
6602	mHWData.backedUpData()->mSharedFolders.size())
6603	sharedFoldersChanged = true;
6604	else
6605	{
6606	for (HWData::SharedFolderList::iterator rit =
6607	mHWData->mSharedFolders.begin();
6608	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
6609	++ rit)
6610	{
6611	for (HWData::SharedFolderList::iterator cit =
6612	mHWData.backedUpData()->mSharedFolders.begin();
6613	cit != mHWData.backedUpData()->mSharedFolders.end();
6614	++ cit)
6615	{
6616	if ((cit)->name() != (rit)->name() \|\|
6617	(cit)->hostPath() != (rit)->hostPath())
6618	{
6619	sharedFoldersChanged = true;
6620	break;
6621	}
6622	}
6623	}
6624	}
6625	}
6626
6627	if (!mStorageControllers.isNull())
6628	{
6629	if (mStorageControllers.isBackedUp())
6630	{
6631	/* unitialize all new devices (absent in the backed up list). */
6632	StorageControllerList::const_iterator it = mStorageControllers->begin();
6633	StorageControllerList *backedList = mStorageControllers.backedUpData();
6634	while (it != mStorageControllers->end())
6635	{
6636	if (std::find (backedList->begin(), backedList->end(), *it ) ==
6637	backedList->end())
6638	{
6639	(*it)->uninit();
6640	}
6641	++ it;
6642	}
6643
6644	/* restore the list */
6645	mStorageControllers.rollback();
6646	}
6647
6648	/* rollback any changes to devices after restoring the list */
6649	StorageControllerList::const_iterator it = mStorageControllers->begin();
6650	while (it != mStorageControllers->end())
6651	{
6652	if ((*it)->isModified())
6653	(*it)->rollback();
6654
6655	++ it;
6656	}
6657	}
6658
6659	mUserData.rollback();
6660
6661	mHWData.rollback();
6662
6663	if (mHDData.isBackedUp())
6664	fixupHardDisks(false /* aCommit */);
6665
6666	/* check for changes in child objects */
6667
6668	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
6669	usbChanged = false;
6670
6671	ComPtr<INetworkAdapter> networkAdapters [RT_ELEMENTS (mNetworkAdapters)];
6672	ComPtr<ISerialPort> serialPorts [RT_ELEMENTS (mSerialPorts)];
6673	ComPtr<IParallelPort> parallelPorts [RT_ELEMENTS (mParallelPorts)];
6674
6675	if (mBIOSSettings)
6676	mBIOSSettings->rollback();
6677
6678	#ifdef VBOX_WITH_VRDP
6679	if (mVRDPServer)
6680	vrdpChanged = mVRDPServer->rollback();
6681	#endif
6682
6683	if (mDVDDrive)
6684	dvdChanged = mDVDDrive->rollback();
6685
6686	if (mFloppyDrive)
6687	floppyChanged = mFloppyDrive->rollback();
6688
6689	if (mAudioAdapter)
6690	mAudioAdapter->rollback();
6691
6692	if (mUSBController)
6693	usbChanged = mUSBController->rollback();
6694
6695	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
6696	if (mNetworkAdapters [slot])
6697	if (mNetworkAdapters [slot]->rollback())
6698	networkAdapters [slot] = mNetworkAdapters [slot];
6699
6700	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
6701	if (mSerialPorts [slot])
6702	if (mSerialPorts [slot]->rollback())
6703	serialPorts [slot] = mSerialPorts [slot];
6704
6705	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
6706	if (mParallelPorts [slot])
6707	if (mParallelPorts [slot]->rollback())
6708	parallelPorts [slot] = mParallelPorts [slot];
6709
6710	if (aNotify)
6711	{
6712	/* inform the direct session about changes */
6713
6714	ComObjPtr<Machine> that = this;
6715	alock.leave();
6716
6717	if (sharedFoldersChanged)
6718	that->onSharedFolderChange();
6719
6720	if (vrdpChanged)
6721	that->onVRDPServerChange();
6722	if (dvdChanged)
6723	that->onDVDDriveChange();
6724	if (floppyChanged)
6725	that->onFloppyDriveChange();
6726	if (usbChanged)
6727	that->onUSBControllerChange();
6728
6729	for (ULONG slot = 0; slot < RT_ELEMENTS (networkAdapters); slot ++)
6730	if (networkAdapters [slot])
6731	that->onNetworkAdapterChange (networkAdapters [slot], FALSE);
6732	for (ULONG slot = 0; slot < RT_ELEMENTS (serialPorts); slot ++)
6733	if (serialPorts [slot])
6734	that->onSerialPortChange (serialPorts [slot]);
6735	for (ULONG slot = 0; slot < RT_ELEMENTS (parallelPorts); slot ++)
6736	if (parallelPorts [slot])
6737	that->onParallelPortChange (parallelPorts [slot]);
6738
6739	if (storageChanged)
6740	that->onStorageControllerChange();
6741	}
6742	}
6743
6744	/**
6745	* Commits all the changes to machine settings.
6746	*
6747	* Note that this operation is supposed to never fail.
6748	*
6749	* @note Locks this object and children for writing.
6750	*/
6751	void Machine::commit()
6752	{
6753	AutoCaller autoCaller(this);
6754	AssertComRCReturnVoid (autoCaller.rc());
6755
6756	AutoCaller peerCaller (mPeer);
6757	AssertComRCReturnVoid (peerCaller.rc());
6758
6759	AutoMultiWriteLock2 alock (mPeer, this);
6760
6761	/*
6762	* use safe commit to ensure Snapshot machines (that share mUserData)
6763	* will still refer to a valid memory location
6764	*/
6765	mUserData.commitCopy();
6766
6767	mHWData.commit();
6768
6769	if (mHDData.isBackedUp())
6770	fixupHardDisks(true /* aCommit */);
6771
6772	mBIOSSettings->commit();
6773	#ifdef VBOX_WITH_VRDP
6774	mVRDPServer->commit();
6775	#endif
6776	mDVDDrive->commit();
6777	mFloppyDrive->commit();
6778	mAudioAdapter->commit();
6779	mUSBController->commit();
6780
6781	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
6782	mNetworkAdapters [slot]->commit();
6783	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
6784	mSerialPorts [slot]->commit();
6785	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
6786	mParallelPorts [slot]->commit();
6787
6788	bool commitStorageControllers = false;
6789
6790	if (mStorageControllers.isBackedUp())
6791	{
6792	mStorageControllers.commit();
6793
6794	if (mPeer)
6795	{
6796	AutoWriteLock peerlock (mPeer);
6797
6798	/* Commit all changes to new controllers (this will reshare data with
6799	* peers for thos who have peers) */
6800	StorageControllerList *newList = new StorageControllerList();
6801	StorageControllerList::const_iterator it = mStorageControllers->begin();
6802	while (it != mStorageControllers->end())
6803	{
6804	(*it)->commit();
6805
6806	/* look if this controller has a peer device */
6807	ComObjPtr<StorageController> peer = (*it)->peer();
6808	if (!peer)
6809	{
6810	/* no peer means the device is a newly created one;
6811	* create a peer owning data this device share it with */
6812	peer.createObject();
6813	peer->init (mPeer, it, true / aReshare */);
6814	}
6815	else
6816	{
6817	/* remove peer from the old list */
6818	mPeer->mStorageControllers->remove (peer);
6819	}
6820	/* and add it to the new list */
6821	newList->push_back(peer);
6822
6823	++ it;
6824	}
6825
6826	/* uninit old peer's controllers that are left */
6827	it = mPeer->mStorageControllers->begin();
6828	while (it != mPeer->mStorageControllers->end())
6829	{
6830	(*it)->uninit();
6831	++ it;
6832	}
6833
6834	/* attach new list of controllers to our peer */
6835	mPeer->mStorageControllers.attach (newList);
6836	}
6837	else
6838	{
6839	/* we have no peer (our parent is the newly created machine);
6840	* just commit changes to devices */
6841	commitStorageControllers = true;
6842	}
6843	}
6844	else
6845	{
6846	/* the list of controllers itself is not changed,
6847	* just commit changes to controllers themselves */
6848	commitStorageControllers = true;
6849	}
6850
6851	if (commitStorageControllers)
6852	{
6853	StorageControllerList::const_iterator it = mStorageControllers->begin();
6854	while (it != mStorageControllers->end())
6855	{
6856	(*it)->commit();
6857	++ it;
6858	}
6859	}
6860
6861	if (mType == IsSessionMachine)
6862	{
6863	/* attach new data to the primary machine and reshare it */
6864	mPeer->mUserData.attach (mUserData);
6865	mPeer->mHWData.attach (mHWData);
6866	/* mHDData is reshared by fixupHardDisks */
6867	// mPeer->mHDData.attach (mHDData);
6868	Assert (mPeer->mHDData.data() == mHDData.data());
6869	}
6870	}
6871
6872	/**
6873	* Copies all the hardware data from the given machine.
6874	*
6875	* Currently, only called when the VM is being restored from a snapshot. In
6876	* particular, this implies that the VM is not running during this method's
6877	* call.
6878	*
6879	* @note This method must be called from under this object's lock.
6880	*
6881	* @note This method doesn't call #commit(), so all data remains backed up and
6882	* unsaved.
6883	*/
6884	void Machine::copyFrom (Machine *aThat)
6885	{
6886	AssertReturnVoid (mType == IsMachine \|\| mType == IsSessionMachine);
6887	AssertReturnVoid (aThat->mType == IsSnapshotMachine);
6888
6889	AssertReturnVoid (!Global::IsOnline (mData->mMachineState));
6890
6891	mHWData.assignCopy (aThat->mHWData);
6892
6893	// create copies of all shared folders (mHWData after attiching a copy
6894	// contains just references to original objects)
6895	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
6896	it != mHWData->mSharedFolders.end();
6897	++ it)
6898	{
6899	ComObjPtr<SharedFolder> folder;
6900	folder.createObject();
6901	HRESULT rc = folder->initCopy (machine(), *it);
6902	AssertComRC (rc);
6903	*it = folder;
6904	}
6905
6906	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
6907	#ifdef VBOX_WITH_VRDP
6908	mVRDPServer->copyFrom (aThat->mVRDPServer);
6909	#endif
6910	mDVDDrive->copyFrom (aThat->mDVDDrive);
6911	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
6912	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
6913	mUSBController->copyFrom (aThat->mUSBController);
6914
6915	/* create private copies of all controllers */
6916	mStorageControllers.backup();
6917	mStorageControllers->clear();
6918	for (StorageControllerList::iterator it = aThat->mStorageControllers->begin();
6919	it != aThat->mStorageControllers->end();
6920	++ it)
6921	{
6922	ComObjPtr<StorageController> ctrl;
6923	ctrl.createObject();
6924	ctrl->initCopy (this, *it);
6925	mStorageControllers->push_back(ctrl);
6926	}
6927
6928	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
6929	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
6930	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
6931	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
6932	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
6933	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
6934	}
6935
6936	#ifdef VBOX_WITH_RESOURCE_USAGE_API
6937	void Machine::registerMetrics (PerformanceCollector aCollector, Machine aMachine, RTPROCESS pid)
6938	{
6939	pm::CollectorHAL *hal = aCollector->getHAL();
6940	/* Create sub metrics */
6941	pm::SubMetric *cpuLoadUser = new pm::SubMetric ("CPU/Load/User",
6942	"Percentage of processor time spent in user mode by VM process.");
6943	pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
6944	"Percentage of processor time spent in kernel mode by VM process.");
6945	pm::SubMetric *ramUsageUsed = new pm::SubMetric ("RAM/Usage/Used",
6946	"Size of resident portion of VM process in memory.");
6947	/* Create and register base metrics */
6948	pm::BaseMetric *cpuLoad = new pm::MachineCpuLoadRaw (hal, aMachine, pid,
6949	cpuLoadUser, cpuLoadKernel);
6950	aCollector->registerBaseMetric (cpuLoad);
6951	pm::BaseMetric *ramUsage = new pm::MachineRamUsage (hal, aMachine, pid,
6952	ramUsageUsed);
6953	aCollector->registerBaseMetric (ramUsage);
6954
6955	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser, 0));
6956	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
6957	new pm::AggregateAvg()));
6958	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
6959	new pm::AggregateMin()));
6960	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
6961	new pm::AggregateMax()));
6962	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel, 0));
6963	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
6964	new pm::AggregateAvg()));
6965	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
6966	new pm::AggregateMin()));
6967	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
6968	new pm::AggregateMax()));
6969
6970	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed, 0));
6971	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
6972	new pm::AggregateAvg()));
6973	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
6974	new pm::AggregateMin()));
6975	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
6976	new pm::AggregateMax()));
6977	};
6978
6979	void Machine::unregisterMetrics (PerformanceCollector aCollector, Machine aMachine)
6980	{
6981	aCollector->unregisterMetricsFor (aMachine);
6982	aCollector->unregisterBaseMetricsFor (aMachine);
6983	};
6984	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
6985
6986
6987	/////////////////////////////////////////////////////////////////////////////
6988	// SessionMachine class
6989	/////////////////////////////////////////////////////////////////////////////
6990
6991	/** Task structure for asynchronous VM operations */
6992	struct SessionMachine::Task
6993	{
6994	Task (SessionMachine m, Progress p)
6995	: machine (m), progress (p)
6996	, state (m->mData->mMachineState) // save the current machine state
6997	, subTask (false)
6998	{}
6999
7000	void modifyLastState (MachineState_T s)
7001	{
7002	const_cast <MachineState_T > (&state) = s;
7003	}
7004
7005	virtual void handler() = 0;
7006
7007	ComObjPtr<SessionMachine> machine;
7008	ComObjPtr<Progress> progress;
7009	const MachineState_T state;
7010
7011	bool subTask : 1;
7012	};
7013
7014	/** Take snapshot task */
7015	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
7016	{
7017	TakeSnapshotTask (SessionMachine *m)
7018	: Task (m, NULL) {}
7019
7020	void handler() { machine->takeSnapshotHandler (*this); }
7021	};
7022
7023	/** Discard snapshot task */
7024	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
7025	{
7026	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
7027	: Task (m, p)
7028	, snapshot (s) {}
7029
7030	DiscardSnapshotTask (const Task &task, Snapshot *s)
7031	: Task (task)
7032	, snapshot (s) {}
7033
7034	void handler() { machine->discardSnapshotHandler (*this); }
7035
7036	ComObjPtr<Snapshot> snapshot;
7037	};
7038
7039	/** Discard current state task */
7040	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
7041	{
7042	DiscardCurrentStateTask (SessionMachine m, Progress p,
7043	bool discardCurSnapshot)
7044	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
7045
7046	void handler() { machine->discardCurrentStateHandler (*this); }
7047
7048	const bool discardCurrentSnapshot;
7049	};
7050
7051	////////////////////////////////////////////////////////////////////////////////
7052
7053	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
7054
7055	HRESULT SessionMachine::FinalConstruct()
7056	{
7057	LogFlowThisFunc(("\n"));
7058
7059	/* set the proper type to indicate we're the SessionMachine instance */
7060	unconst(mType) = IsSessionMachine;
7061
7062	#if defined(RT_OS_WINDOWS)
7063	mIPCSem = NULL;
7064	#elif defined(RT_OS_OS2)
7065	mIPCSem = NULLHANDLE;
7066	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7067	mIPCSem = -1;
7068	#else
7069	# error "Port me!"
7070	#endif
7071
7072	return S_OK;
7073	}
7074
7075	void SessionMachine::FinalRelease()
7076	{
7077	LogFlowThisFunc(("\n"));
7078
7079	uninit (Uninit::Unexpected);
7080	}
7081
7082	/**
7083	* @note Must be called only by Machine::openSession() from its own write lock.
7084	*/
7085	HRESULT SessionMachine::init (Machine *aMachine)
7086	{
7087	LogFlowThisFuncEnter();
7088	LogFlowThisFunc(("mName={%ls}\n", aMachine->mUserData->mName.raw()));
7089
7090	AssertReturn(aMachine, E_INVALIDARG);
7091
7092	AssertReturn(aMachine->lockHandle()->isWriteLockOnCurrentThread(), E_FAIL);
7093
7094	/* Enclose the state transition NotReady->InInit->Ready */
7095	AutoInitSpan autoInitSpan(this);
7096	AssertReturn(autoInitSpan.isOk(), E_FAIL);
7097
7098	/* create the interprocess semaphore */
7099	#if defined(RT_OS_WINDOWS)
7100	mIPCSemName = aMachine->mData->m_strConfigFileFull;
7101	for (size_t i = 0; i < mIPCSemName.length(); i++)
7102	if (mIPCSemName[i] == '\\')
7103	mIPCSemName[i] = '/';
7104	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
7105	ComAssertMsgRet (mIPCSem,
7106	("Cannot create IPC mutex '%ls', err=%d",
7107	mIPCSemName.raw(), ::GetLastError()),
7108	E_FAIL);
7109	#elif defined(RT_OS_OS2)
7110	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%RTuuid}",
7111	aMachine->mData->mUuid.raw());
7112	mIPCSemName = ipcSem;
7113	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
7114	ComAssertMsgRet (arc == NO_ERROR,
7115	("Cannot create IPC mutex '%s', arc=%ld",
7116	ipcSem.raw(), arc),
7117	E_FAIL);
7118	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7119	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
7120	# if defined(RT_OS_FREEBSD) && (HC_ARCH_BITS == 64)
7121	/** @todo Check that this still works correctly. */
7122	AssertCompileSize(key_t, 8);
7123	# else
7124	AssertCompileSize(key_t, 4);
7125	# endif
7126	key_t key;
7127	mIPCSem = -1;
7128	mIPCKey = "0";
7129	for (uint32_t i = 0; i < 1 << 24; i++)
7130	{
7131	key = ((uint32_t)'V' << 24) \| i;
7132	int sem = ::semget (key, 1, S_IRUSR \| S_IWUSR \| IPC_CREAT \| IPC_EXCL);
7133	if (sem >= 0 \|\| (errno != EEXIST && errno != EACCES))
7134	{
7135	mIPCSem = sem;
7136	if (sem >= 0)
7137	mIPCKey = BstrFmt ("%u", key);
7138	break;
7139	}
7140	}
7141	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
7142	Utf8Str semName = aMachine->mData->m_strConfigFileFull;
7143	char *pszSemName = NULL;
7144	RTStrUtf8ToCurrentCP (&pszSemName, semName);
7145	key_t key = ::ftok (pszSemName, 'V');
7146	RTStrFree (pszSemName);
7147
7148	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
7149	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
7150
7151	int errnoSave = errno;
7152	if (mIPCSem < 0 && errnoSave == ENOSYS)
7153	{
7154	setError(E_FAIL,
7155	tr("Cannot create IPC semaphore. Most likely your host kernel lacks "
7156	"support for SysV IPC. Check the host kernel configuration for "
7157	"CONFIG_SYSVIPC=y"));
7158	return E_FAIL;
7159	}
7160	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", errnoSave),
7161	E_FAIL);
7162	/* set the initial value to 1 */
7163	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
7164	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
7165	E_FAIL);
7166	#else
7167	# error "Port me!"
7168	#endif
7169
7170	/* memorize the peer Machine */
7171	unconst(mPeer) = aMachine;
7172	/* share the parent pointer */
7173	unconst(mParent) = aMachine->mParent;
7174
7175	/* take the pointers to data to share */
7176	mData.share (aMachine->mData);
7177	mSSData.share (aMachine->mSSData);
7178
7179	mUserData.share (aMachine->mUserData);
7180	mHWData.share (aMachine->mHWData);
7181	mHDData.share (aMachine->mHDData);
7182
7183	mStorageControllers.allocate();
7184	StorageControllerList::const_iterator it = aMachine->mStorageControllers->begin();
7185	while (it != aMachine->mStorageControllers->end())
7186	{
7187	ComObjPtr<StorageController> ctl;
7188	ctl.createObject();
7189	ctl->init(this, *it);
7190	mStorageControllers->push_back (ctl);
7191	++ it;
7192	}
7193
7194	unconst(mBIOSSettings).createObject();
7195	mBIOSSettings->init (this, aMachine->mBIOSSettings);
7196	#ifdef VBOX_WITH_VRDP
7197	/* create another VRDPServer object that will be mutable */
7198	unconst(mVRDPServer).createObject();
7199	mVRDPServer->init (this, aMachine->mVRDPServer);
7200	#endif
7201	/* create another DVD drive object that will be mutable */
7202	unconst(mDVDDrive).createObject();
7203	mDVDDrive->init (this, aMachine->mDVDDrive);
7204	/* create another floppy drive object that will be mutable */
7205	unconst(mFloppyDrive).createObject();
7206	mFloppyDrive->init (this, aMachine->mFloppyDrive);
7207	/* create another audio adapter object that will be mutable */
7208	unconst(mAudioAdapter).createObject();
7209	mAudioAdapter->init (this, aMachine->mAudioAdapter);
7210	/* create a list of serial ports that will be mutable */
7211	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7212	{
7213	unconst(mSerialPorts [slot]).createObject();
7214	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
7215	}
7216	/* create a list of parallel ports that will be mutable */
7217	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7218	{
7219	unconst(mParallelPorts [slot]).createObject();
7220	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
7221	}
7222	/* create another USB controller object that will be mutable */
7223	unconst(mUSBController).createObject();
7224	mUSBController->init (this, aMachine->mUSBController);
7225
7226	/* create a list of network adapters that will be mutable */
7227	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7228	{
7229	unconst(mNetworkAdapters [slot]).createObject();
7230	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
7231	}
7232
7233	/* default is to delete saved state on Saved -> PoweredOff transition */
7234	mRemoveSavedState = true;
7235
7236	/* Confirm a successful initialization when it's the case */
7237	autoInitSpan.setSucceeded();
7238
7239	LogFlowThisFuncLeave();
7240	return S_OK;
7241	}
7242
7243	/**
7244	* Uninitializes this session object. If the reason is other than
7245	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
7246	*
7247	* @param aReason uninitialization reason
7248	*
7249	* @note Locks mParent + this object for writing.
7250	*/
7251	void SessionMachine::uninit (Uninit::Reason aReason)
7252	{
7253	LogFlowThisFuncEnter();
7254	LogFlowThisFunc(("reason=%d\n", aReason));
7255
7256	/*
7257	* Strongly reference ourselves to prevent this object deletion after
7258	* mData->mSession.mMachine.setNull() below (which can release the last
7259	* reference and call the destructor). Important: this must be done before
7260	* accessing any members (and before AutoUninitSpan that does it as well).
7261	* This self reference will be released as the very last step on return.
7262	*/
7263	ComObjPtr<SessionMachine> selfRef = this;
7264
7265	/* Enclose the state transition Ready->InUninit->NotReady */
7266	AutoUninitSpan autoUninitSpan(this);
7267	if (autoUninitSpan.uninitDone())
7268	{
7269	LogFlowThisFunc(("Already uninitialized\n"));
7270	LogFlowThisFuncLeave();
7271	return;
7272	}
7273
7274	if (autoUninitSpan.initFailed())
7275	{
7276	/* We've been called by init() because it's failed. It's not really
7277	* necessary (nor it's safe) to perform the regular uninit sequense
7278	* below, the following is enough.
7279	*/
7280	LogFlowThisFunc(("Initialization failed.\n"));
7281	#if defined(RT_OS_WINDOWS)
7282	if (mIPCSem)
7283	::CloseHandle (mIPCSem);
7284	mIPCSem = NULL;
7285	#elif defined(RT_OS_OS2)
7286	if (mIPCSem != NULLHANDLE)
7287	::DosCloseMutexSem (mIPCSem);
7288	mIPCSem = NULLHANDLE;
7289	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7290	if (mIPCSem >= 0)
7291	::semctl (mIPCSem, 0, IPC_RMID);
7292	mIPCSem = -1;
7293	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
7294	mIPCKey = "0";
7295	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
7296	#else
7297	# error "Port me!"
7298	#endif
7299	uninitDataAndChildObjects();
7300	mData.free();
7301	unconst(mParent).setNull();
7302	unconst(mPeer).setNull();
7303	LogFlowThisFuncLeave();
7304	return;
7305	}
7306
7307	/* We need to lock this object in uninit() because the lock is shared
7308	* with mPeer (as well as data we modify below). mParent->addProcessToReap()
7309	* and others need mParent lock. */
7310	AutoMultiWriteLock2 alock (mParent, this);
7311
7312	#ifdef VBOX_WITH_RESOURCE_USAGE_API
7313	unregisterMetrics (mParent->performanceCollector(), mPeer);
7314	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
7315
7316	MachineState_T lastState = mData->mMachineState;
7317	NOREF(lastState);
7318
7319	if (aReason == Uninit::Abnormal)
7320	{
7321	LogWarningThisFunc(("ABNORMAL client termination! (wasBusy=%d)\n",
7322	Global::IsOnlineOrTransient (lastState)));
7323
7324	/* reset the state to Aborted */
7325	if (mData->mMachineState != MachineState_Aborted)
7326	setMachineState (MachineState_Aborted);
7327	}
7328
7329	if (isModified())
7330	{
7331	LogWarningThisFunc(("Discarding unsaved settings changes!\n"));
7332	rollback (false /* aNotify */);
7333	}
7334
7335	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
7336	if (mSnapshotData.mStateFilePath)
7337	{
7338	LogWarningThisFunc(("canceling failed save state request!\n"));
7339	endSavingState (FALSE /* aSuccess */);
7340	}
7341	else if (!mSnapshotData.mSnapshot.isNull())
7342	{
7343	LogWarningThisFunc(("canceling untaken snapshot!\n"));
7344	endTakingSnapshot (FALSE /* aSuccess */);
7345	}
7346
7347	#ifdef VBOX_WITH_USB
7348	/* release all captured USB devices */
7349	if (aReason == Uninit::Abnormal && Global::IsOnline (lastState))
7350	{
7351	/* Console::captureUSBDevices() is called in the VM process only after
7352	* setting the machine state to Starting or Restoring.
7353	* Console::detachAllUSBDevices() will be called upon successful
7354	* termination. So, we need to release USB devices only if there was
7355	* an abnormal termination of a running VM.
7356	*
7357	* This is identical to SessionMachine::DetachAllUSBDevices except
7358	* for the aAbnormal argument. */
7359	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
7360	AssertComRC(rc);
7361	NOREF (rc);
7362
7363	USBProxyService *service = mParent->host()->usbProxyService();
7364	if (service)
7365	service->detachAllDevicesFromVM (this, true /* aDone /, true / aAbnormal */);
7366	}
7367	#endif /* VBOX_WITH_USB */
7368
7369	if (!mData->mSession.mType.isNull())
7370	{
7371	/* mType is not null when this machine's process has been started by
7372	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
7373	* need to queue the PID to reap the process (and avoid zombies on
7374	* Linux). */
7375	Assert (mData->mSession.mPid != NIL_RTPROCESS);
7376	mParent->addProcessToReap (mData->mSession.mPid);
7377	}
7378
7379	mData->mSession.mPid = NIL_RTPROCESS;
7380
7381	if (aReason == Uninit::Unexpected)
7382	{
7383	/* Uninitialization didn't come from #checkForDeath(), so tell the
7384	* client watcher thread to update the set of machines that have open
7385	* sessions. */
7386	mParent->updateClientWatcher();
7387	}
7388
7389	/* uninitialize all remote controls */
7390	if (mData->mSession.mRemoteControls.size())
7391	{
7392	LogFlowThisFunc(("Closing remote sessions (%d):\n",
7393	mData->mSession.mRemoteControls.size()));
7394
7395	Data::Session::RemoteControlList::iterator it =
7396	mData->mSession.mRemoteControls.begin();
7397	while (it != mData->mSession.mRemoteControls.end())
7398	{
7399	LogFlowThisFunc((" Calling remoteControl->Uninitialize()...\n"));
7400	HRESULT rc = (*it)->Uninitialize();
7401	LogFlowThisFunc((" remoteControl->Uninitialize() returned %08X\n", rc));
7402	if (FAILED (rc))
7403	LogWarningThisFunc(("Forgot to close the remote session?\n"));
7404	++ it;
7405	}
7406	mData->mSession.mRemoteControls.clear();
7407	}
7408
7409	/*
7410	* An expected uninitialization can come only from #checkForDeath().
7411	* Otherwise it means that something's got really wrong (for examlple,
7412	* the Session implementation has released the VirtualBox reference
7413	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
7414	* etc). However, it's also possible, that the client releases the IPC
7415	* semaphore correctly (i.e. before it releases the VirtualBox reference),
7416	* but the VirtualBox release event comes first to the server process.
7417	* This case is practically possible, so we should not assert on an
7418	* unexpected uninit, just log a warning.
7419	*/
7420
7421	if ((aReason == Uninit::Unexpected))
7422	LogWarningThisFunc(("Unexpected SessionMachine uninitialization!\n"));
7423
7424	if (aReason != Uninit::Normal)
7425	{
7426	mData->mSession.mDirectControl.setNull();
7427	}
7428	else
7429	{
7430	/* this must be null here (see #OnSessionEnd()) */
7431	Assert (mData->mSession.mDirectControl.isNull());
7432	Assert (mData->mSession.mState == SessionState_Closing);
7433	Assert (!mData->mSession.mProgress.isNull());
7434
7435	mData->mSession.mProgress->notifyComplete (S_OK);
7436	mData->mSession.mProgress.setNull();
7437	}
7438
7439	/* remove the association between the peer machine and this session machine */
7440	Assert (mData->mSession.mMachine == this \|\|
7441	aReason == Uninit::Unexpected);
7442
7443	/* reset the rest of session data */
7444	mData->mSession.mMachine.setNull();
7445	mData->mSession.mState = SessionState_Closed;
7446	mData->mSession.mType.setNull();
7447
7448	/* close the interprocess semaphore before leaving the shared lock */
7449	#if defined(RT_OS_WINDOWS)
7450	if (mIPCSem)
7451	::CloseHandle (mIPCSem);
7452	mIPCSem = NULL;
7453	#elif defined(RT_OS_OS2)
7454	if (mIPCSem != NULLHANDLE)
7455	::DosCloseMutexSem (mIPCSem);
7456	mIPCSem = NULLHANDLE;
7457	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7458	if (mIPCSem >= 0)
7459	::semctl (mIPCSem, 0, IPC_RMID);
7460	mIPCSem = -1;
7461	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
7462	mIPCKey = "0";
7463	# endif /* VBOX_WITH_NEW_SYS_V_KEYGEN */
7464	#else
7465	# error "Port me!"
7466	#endif
7467
7468	/* fire an event */
7469	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
7470
7471	uninitDataAndChildObjects();
7472
7473	/* free the essential data structure last */
7474	mData.free();
7475
7476	/* leave the shared lock before setting the below two to NULL */
7477	alock.leave();
7478
7479	unconst(mParent).setNull();
7480	unconst(mPeer).setNull();
7481
7482	LogFlowThisFuncLeave();
7483	}
7484
7485	// util::Lockable interface
7486	////////////////////////////////////////////////////////////////////////////////
7487
7488	/**
7489	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
7490	* with the primary Machine instance (mPeer).
7491	*/
7492	RWLockHandle *SessionMachine::lockHandle() const
7493	{
7494	AssertReturn(!mPeer.isNull(), NULL);
7495	return mPeer->lockHandle();
7496	}
7497
7498	// IInternalMachineControl methods
7499	////////////////////////////////////////////////////////////////////////////////
7500
7501	/**
7502	* @note Locks this object for writing.
7503	*/
7504	STDMETHODIMP SessionMachine::SetRemoveSavedState(BOOL aRemove)
7505	{
7506	AutoCaller autoCaller(this);
7507	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7508
7509	AutoWriteLock alock(this);
7510
7511	mRemoveSavedState = aRemove;
7512
7513	return S_OK;
7514	}
7515
7516	/**
7517	* @note Locks the same as #setMachineState() does.
7518	*/
7519	STDMETHODIMP SessionMachine::UpdateState (MachineState_T aMachineState)
7520	{
7521	return setMachineState (aMachineState);
7522	}
7523
7524	/**
7525	* @note Locks this object for reading.
7526	*/
7527	STDMETHODIMP SessionMachine::GetIPCId (BSTR *aId)
7528	{
7529	AutoCaller autoCaller(this);
7530	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7531
7532	AutoReadLock alock(this);
7533
7534	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
7535	mIPCSemName.cloneTo(aId);
7536	return S_OK;
7537	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7538	# ifdef VBOX_WITH_NEW_SYS_V_KEYGEN
7539	mIPCKey.cloneTo(aId);
7540	# else /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
7541	mData->m_strConfigFileFull.cloneTo(aId);
7542	# endif /* !VBOX_WITH_NEW_SYS_V_KEYGEN */
7543	return S_OK;
7544	#else
7545	# error "Port me!"
7546	#endif
7547	}
7548
7549	/**
7550	* Goes through the USB filters of the given machine to see if the given
7551	* device matches any filter or not.
7552	*
7553	* @note Locks the same as USBController::hasMatchingFilter() does.
7554	*/
7555	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
7556	BOOL *aMatched,
7557	ULONG *aMaskedIfs)
7558	{
7559	LogFlowThisFunc(("\n"));
7560
7561	CheckComArgNotNull (aUSBDevice);
7562	CheckComArgOutPointerValid(aMatched);
7563
7564	AutoCaller autoCaller(this);
7565	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7566
7567	#ifdef VBOX_WITH_USB
7568	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
7569	#else
7570	NOREF(aUSBDevice);
7571	NOREF(aMaskedIfs);
7572	*aMatched = FALSE;
7573	#endif
7574
7575	return S_OK;
7576	}
7577
7578	/**
7579	* @note Locks the same as Host::captureUSBDevice() does.
7580	*/
7581	STDMETHODIMP SessionMachine::CaptureUSBDevice (IN_BSTR aId)
7582	{
7583	LogFlowThisFunc(("\n"));
7584
7585	AutoCaller autoCaller(this);
7586	AssertComRCReturnRC(autoCaller.rc());
7587
7588	#ifdef VBOX_WITH_USB
7589	/* if captureDeviceForVM() fails, it must have set extended error info */
7590	MultiResult rc = mParent->host()->checkUSBProxyService();
7591	CheckComRCReturnRC(rc);
7592
7593	USBProxyService *service = mParent->host()->usbProxyService();
7594	AssertReturn(service, E_FAIL);
7595	return service->captureDeviceForVM (this, Guid(aId));
7596	#else
7597	NOREF(aId);
7598	return E_NOTIMPL;
7599	#endif
7600	}
7601
7602	/**
7603	* @note Locks the same as Host::detachUSBDevice() does.
7604	*/
7605	STDMETHODIMP SessionMachine::DetachUSBDevice (IN_BSTR aId, BOOL aDone)
7606	{
7607	LogFlowThisFunc(("\n"));
7608
7609	AutoCaller autoCaller(this);
7610	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7611
7612	#ifdef VBOX_WITH_USB
7613	USBProxyService *service = mParent->host()->usbProxyService();
7614	AssertReturn(service, E_FAIL);
7615	return service->detachDeviceFromVM (this, Guid(aId), !!aDone);
7616	#else
7617	NOREF(aId);
7618	NOREF(aDone);
7619	return E_NOTIMPL;
7620	#endif
7621	}
7622
7623	/**
7624	* Inserts all machine filters to the USB proxy service and then calls
7625	* Host::autoCaptureUSBDevices().
7626	*
7627	* Called by Console from the VM process upon VM startup.
7628	*
7629	* @note Locks what called methods lock.
7630	*/
7631	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
7632	{
7633	LogFlowThisFunc(("\n"));
7634
7635	AutoCaller autoCaller(this);
7636	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7637
7638	#ifdef VBOX_WITH_USB
7639	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
7640	AssertComRC(rc);
7641	NOREF (rc);
7642
7643	USBProxyService *service = mParent->host()->usbProxyService();
7644	AssertReturn(service, E_FAIL);
7645	return service->autoCaptureDevicesForVM (this);
7646	#else
7647	return S_OK;
7648	#endif
7649	}
7650
7651	/**
7652	* Removes all machine filters from the USB proxy service and then calls
7653	* Host::detachAllUSBDevices().
7654	*
7655	* Called by Console from the VM process upon normal VM termination or by
7656	* SessionMachine::uninit() upon abnormal VM termination (from under the
7657	* Machine/SessionMachine lock).
7658	*
7659	* @note Locks what called methods lock.
7660	*/
7661	STDMETHODIMP SessionMachine::DetachAllUSBDevices (BOOL aDone)
7662	{
7663	LogFlowThisFunc(("\n"));
7664
7665	AutoCaller autoCaller(this);
7666	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7667
7668	#ifdef VBOX_WITH_USB
7669	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
7670	AssertComRC(rc);
7671	NOREF (rc);
7672
7673	USBProxyService *service = mParent->host()->usbProxyService();
7674	AssertReturn(service, E_FAIL);
7675	return service->detachAllDevicesFromVM (this, !!aDone, false /* aAbnormal */);
7676	#else
7677	NOREF(aDone);
7678	return S_OK;
7679	#endif
7680	}
7681
7682	/**
7683	* @note Locks this object for writing.
7684	*/
7685	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
7686	IProgress **aProgress)
7687	{
7688	LogFlowThisFuncEnter();
7689
7690	AssertReturn(aSession, E_INVALIDARG);
7691	AssertReturn(aProgress, E_INVALIDARG);
7692
7693	AutoCaller autoCaller(this);
7694
7695	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
7696	/*
7697	* We don't assert below because it might happen that a non-direct session
7698	* informs us it is closed right after we've been uninitialized -- it's ok.
7699	*/
7700	CheckComRCReturnRC(autoCaller.rc());
7701
7702	/* get IInternalSessionControl interface */
7703	ComPtr<IInternalSessionControl> control (aSession);
7704
7705	ComAssertRet (!control.isNull(), E_INVALIDARG);
7706
7707	AutoWriteLock alock(this);
7708
7709	if (control.equalsTo (mData->mSession.mDirectControl))
7710	{
7711	ComAssertRet (aProgress, E_POINTER);
7712
7713	/* The direct session is being normally closed by the client process
7714	* ----------------------------------------------------------------- */
7715
7716	/* go to the closing state (essential for all open*Session() calls and
7717	* for #checkForDeath()) */
7718	Assert (mData->mSession.mState == SessionState_Open);
7719	mData->mSession.mState = SessionState_Closing;
7720
7721	/* set direct control to NULL to release the remote instance */
7722	mData->mSession.mDirectControl.setNull();
7723	LogFlowThisFunc(("Direct control is set to NULL\n"));
7724
7725	/* Create the progress object the client will use to wait until
7726	* #checkForDeath() is called to uninitialize this session object after
7727	* it releases the IPC semaphore. */
7728	ComObjPtr<Progress> progress;
7729	progress.createObject();
7730	progress->init (mParent, static_cast <IMachine *> (mPeer),
7731	Bstr (tr ("Closing session")), FALSE /* aCancelable */);
7732	progress.queryInterfaceTo(aProgress);
7733	mData->mSession.mProgress = progress;
7734	}
7735	else
7736	{
7737	/* the remote session is being normally closed */
7738	Data::Session::RemoteControlList::iterator it =
7739	mData->mSession.mRemoteControls.begin();
7740	while (it != mData->mSession.mRemoteControls.end())
7741	{
7742	if (control.equalsTo (*it))
7743	break;
7744	++it;
7745	}
7746	BOOL found = it != mData->mSession.mRemoteControls.end();
7747	ComAssertMsgRet (found, ("The session is not found in the session list!"),
7748	E_INVALIDARG);
7749	mData->mSession.mRemoteControls.remove (*it);
7750	}
7751
7752	LogFlowThisFuncLeave();
7753	return S_OK;
7754	}
7755
7756	/**
7757	* @note Locks this object for writing.
7758	*/
7759	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
7760	{
7761	LogFlowThisFuncEnter();
7762
7763	AssertReturn(aProgress, E_INVALIDARG);
7764	AssertReturn(aStateFilePath, E_POINTER);
7765
7766	AutoCaller autoCaller(this);
7767	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7768
7769	AutoWriteLock alock(this);
7770
7771	AssertReturn(mData->mMachineState == MachineState_Paused &&
7772	mSnapshotData.mLastState == MachineState_Null &&
7773	mSnapshotData.mProgressId.isEmpty() &&
7774	mSnapshotData.mStateFilePath.isNull(),
7775	E_FAIL);
7776
7777	/* memorize the progress ID and add it to the global collection */
7778	Bstr progressId;
7779	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
7780	AssertComRCReturn (rc, rc);
7781	rc = mParent->addProgress (aProgress);
7782	AssertComRCReturn (rc, rc);
7783
7784	Bstr stateFilePath;
7785	/* stateFilePath is null when the machine is not running */
7786	if (mData->mMachineState == MachineState_Paused)
7787	{
7788	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
7789	mUserData->mSnapshotFolderFull.raw(),
7790	RTPATH_DELIMITER, mData->mUuid.raw());
7791	}
7792
7793	/* fill in the snapshot data */
7794	mSnapshotData.mLastState = mData->mMachineState;
7795	mSnapshotData.mProgressId = Guid(progressId);
7796	mSnapshotData.mStateFilePath = stateFilePath;
7797
7798	/* set the state to Saving (this is expected by Console::SaveState()) */
7799	setMachineState (MachineState_Saving);
7800
7801	stateFilePath.cloneTo(aStateFilePath);
7802
7803	return S_OK;
7804	}
7805
7806	/**
7807	* @note Locks mParent + this object for writing.
7808	*/
7809	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
7810	{
7811	LogFlowThisFunc(("\n"));
7812
7813	AutoCaller autoCaller(this);
7814	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7815
7816	/* endSavingState() need mParent lock */
7817	AutoMultiWriteLock2 alock (mParent, this);
7818
7819	AssertReturn(mData->mMachineState == MachineState_Saving &&
7820	mSnapshotData.mLastState != MachineState_Null &&
7821	!mSnapshotData.mProgressId.isEmpty() &&
7822	!mSnapshotData.mStateFilePath.isNull(),
7823	E_FAIL);
7824
7825	/*
7826	* on success, set the state to Saved;
7827	* on failure, set the state to the state we had when BeginSavingState() was
7828	* called (this is expected by Console::SaveState() and
7829	* Console::saveStateThread())
7830	*/
7831	if (aSuccess)
7832	setMachineState (MachineState_Saved);
7833	else
7834	setMachineState (mSnapshotData.mLastState);
7835
7836	return endSavingState (aSuccess);
7837	}
7838
7839	/**
7840	* @note Locks this object for writing.
7841	*/
7842	STDMETHODIMP SessionMachine::AdoptSavedState (IN_BSTR aSavedStateFile)
7843	{
7844	LogFlowThisFunc(("\n"));
7845
7846	AssertReturn(aSavedStateFile, E_INVALIDARG);
7847
7848	AutoCaller autoCaller(this);
7849	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7850
7851	AutoWriteLock alock(this);
7852
7853	AssertReturn(mData->mMachineState == MachineState_PoweredOff \|\|
7854	mData->mMachineState == MachineState_Aborted,
7855	E_FAIL);
7856
7857	Utf8Str stateFilePathFull = aSavedStateFile;
7858	int vrc = calculateFullPath(stateFilePathFull, stateFilePathFull);
7859	if (RT_FAILURE(vrc))
7860	return setError(VBOX_E_FILE_ERROR,
7861	tr("Invalid saved state file path '%ls' (%Rrc)"),
7862	aSavedStateFile,
7863	vrc);
7864
7865	mSSData->mStateFilePath = stateFilePathFull;
7866
7867	/* The below setMachineState() will detect the state transition and will
7868	* update the settings file */
7869
7870	return setMachineState (MachineState_Saved);
7871	}
7872
7873	/**
7874	* @note Locks mParent + this object for writing.
7875	*/
7876	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
7877	IConsole *aInitiator, IN_BSTR aName, IN_BSTR aDescription,
7878	IProgress aProgress, BSTR aStateFilePath,
7879	IProgress **aServerProgress)
7880	{
7881	LogFlowThisFuncEnter();
7882
7883	AssertReturn(aInitiator && aName, E_INVALIDARG);
7884	AssertReturn(aStateFilePath && aServerProgress, E_POINTER);
7885
7886	LogFlowThisFunc(("aName='%ls'\n", aName));
7887
7888	AutoCaller autoCaller(this);
7889	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
7890
7891	/* saveSettings() needs mParent lock */
7892	AutoMultiWriteLock2 alock (mParent, this);
7893
7894	AssertReturn((!Global::IsOnlineOrTransient (mData->mMachineState) \|\|
7895	mData->mMachineState == MachineState_Paused) &&
7896	mSnapshotData.mLastState == MachineState_Null &&
7897	mSnapshotData.mSnapshot.isNull() &&
7898	mSnapshotData.mServerProgress.isNull() &&
7899	mSnapshotData.mCombinedProgress.isNull(),
7900	E_FAIL);
7901
7902	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
7903
7904	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
7905	{
7906	/* save all current settings to ensure current changes are committed and
7907	* hard disks are fixed up */
7908	HRESULT rc = saveSettings();
7909	CheckComRCReturnRC(rc);
7910	}
7911
7912	/// @todo NEWMEDIA so far, we decided to allow for Writhethrough hard disks
7913	/// when taking snapshots putting all the responsibility to the user...
7914	#if 0
7915	/* check that there are no Writethrough hard disks attached */
7916	for (HDData::AttachmentList::const_iterator
7917	it = mHDData->mAttachments.begin();
7918	it != mHDData->mAttachments.end();
7919	++ it)
7920	{
7921	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
7922	AutoReadLock hdLock (hd);
7923	if (hd->type() == HardDiskType_Writethrough)
7924	return setError (E_FAIL,
7925	tr ("Cannot take a snapshot because the Writethrough hard disk "
7926	"'%ls' is attached to this virtual machine"),
7927	hd->locationFull().raw());
7928	}
7929	#endif
7930
7931	AssertReturn(aProgress \|\| !takingSnapshotOnline, E_FAIL);
7932
7933	/* create an ID for the snapshot */
7934	Guid snapshotId;
7935	snapshotId.create();
7936
7937	Bstr stateFilePath;
7938	/* stateFilePath is null when the machine is not online nor saved */
7939	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
7940	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
7941	mUserData->mSnapshotFolderFull.raw(),
7942	RTPATH_DELIMITER,
7943	snapshotId.ptr());
7944
7945	/* ensure the directory for the saved state file exists */
7946	if (stateFilePath)
7947	{
7948	HRESULT rc = VirtualBox::ensureFilePathExists(Utf8Str(stateFilePath));
7949	CheckComRCReturnRC(rc);
7950	}
7951
7952	/* create a snapshot machine object */
7953	ComObjPtr<SnapshotMachine> snapshotMachine;
7954	snapshotMachine.createObject();
7955	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
7956	AssertComRCReturn (rc, rc);
7957
7958	Bstr progressDesc = BstrFmt (tr ("Taking snapshot of virtual machine '%ls'"),
7959	mUserData->mName.raw());
7960	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
7961
7962	/* create a server-side progress object (it will be descriptionless when we
7963	* need to combine it with the VM-side progress, i.e. when we're taking a
7964	* snapshot online). The number of operations is: 1 (preparing) + # of
7965	* hard disks + 1 (if the state is saved so we need to copy it)
7966	*/
7967	ComObjPtr<Progress> serverProgress;
7968	serverProgress.createObject();
7969	{
7970	ULONG opCount = 1 + (ULONG)mHDData->mAttachments.size();
7971	if (mData->mMachineState == MachineState_Saved)
7972	opCount ++;
7973	if (takingSnapshotOnline)
7974	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
7975	else
7976	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
7977	opCount, firstOpDesc);
7978	AssertComRCReturn (rc, rc);
7979	}
7980
7981	/* create a combined server-side progress object when necessary */
7982	ComObjPtr<CombinedProgress> combinedProgress;
7983	if (takingSnapshotOnline)
7984	{
7985	combinedProgress.createObject();
7986	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
7987	serverProgress, aProgress);
7988	AssertComRCReturn (rc, rc);
7989	}
7990
7991	/* create a snapshot object */
7992	RTTIMESPEC time;
7993	ComObjPtr<Snapshot> snapshot;
7994	snapshot.createObject();
7995	rc = snapshot->init(mParent,
7996	snapshotId,
7997	aName,
7998	aDescription,
7999	*RTTimeNow(&time),
8000	snapshotMachine,
8001	mData->mCurrentSnapshot);
8002	AssertComRCReturnRC(rc);
8003
8004	/* create and start the task on a separate thread (note that it will not
8005	* start working until we release alock) */
8006	TakeSnapshotTask *task = new TakeSnapshotTask (this);
8007	int vrc = RTThreadCreate (NULL, taskHandler,
8008	(void *) task,
8009	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
8010	if (RT_FAILURE(vrc))
8011	{
8012	snapshot->uninit();
8013	delete task;
8014	ComAssertRCRet (vrc, E_FAIL);
8015	}
8016
8017	/* fill in the snapshot data */
8018	mSnapshotData.mLastState = mData->mMachineState;
8019	mSnapshotData.mSnapshot = snapshot;
8020	mSnapshotData.mServerProgress = serverProgress;
8021	mSnapshotData.mCombinedProgress = combinedProgress;
8022
8023	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
8024	setMachineState (MachineState_Saving);
8025
8026	if (takingSnapshotOnline)
8027	stateFilePath.cloneTo(aStateFilePath);
8028	else
8029	*aStateFilePath = NULL;
8030
8031	serverProgress.queryInterfaceTo(aServerProgress);
8032
8033	LogFlowThisFuncLeave();
8034	return S_OK;
8035	}
8036
8037	/**
8038	* @note Locks this object for writing.
8039	*/
8040	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
8041	{
8042	LogFlowThisFunc(("\n"));
8043
8044	AutoCaller autoCaller(this);
8045	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8046
8047	AutoWriteLock alock(this);
8048
8049	AssertReturn(!aSuccess \|\|
8050	(mData->mMachineState == MachineState_Saving &&
8051	mSnapshotData.mLastState != MachineState_Null &&
8052	!mSnapshotData.mSnapshot.isNull() &&
8053	!mSnapshotData.mServerProgress.isNull() &&
8054	!mSnapshotData.mCombinedProgress.isNull()),
8055	E_FAIL);
8056
8057	/* set the state to the state we had when BeginTakingSnapshot() was called
8058	* (this is expected by Console::TakeSnapshot() and
8059	* Console::saveStateThread()) */
8060	setMachineState (mSnapshotData.mLastState);
8061
8062	return endTakingSnapshot (aSuccess);
8063	}
8064
8065	/**
8066	* @note Locks mParent + this + children objects for writing!
8067	*/
8068	STDMETHODIMP SessionMachine::DiscardSnapshot(IConsole *aInitiator,
8069	IN_BSTR aId,
8070	MachineState_T *aMachineState,
8071	IProgress **aProgress)
8072	{
8073	LogFlowThisFunc(("\n"));
8074
8075	Guid id(aId);
8076	AssertReturn(aInitiator && !id.isEmpty(), E_INVALIDARG);
8077	AssertReturn(aMachineState && aProgress, E_POINTER);
8078
8079	AutoCaller autoCaller(this);
8080	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8081
8082	/* saveSettings() needs mParent lock */
8083	AutoMultiWriteLock2 alock(mParent, this);
8084
8085	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8086
8087	AutoWriteLock treeLock(snapshotsTreeLockHandle());
8088
8089	ComObjPtr<Snapshot> snapshot;
8090	HRESULT rc = findSnapshot(id, snapshot, true /* aSetError */);
8091	CheckComRCReturnRC(rc);
8092
8093	AutoWriteLock snapshotLock(snapshot);
8094
8095	size_t childrenCount = snapshot->getChildrenCount();
8096	if (childrenCount > 1)
8097	return setError(VBOX_E_INVALID_OBJECT_STATE,
8098	tr("Snapshot '%s' of the machine '%ls' has more than one child snapshot (%d)"),
8099	snapshot->getName().c_str(),
8100	mUserData->mName.raw(),
8101	childrenCount);
8102
8103	/* If the snapshot being discarded is the current one, ensure current
8104	* settings are committed and saved.
8105	*/
8106	if (snapshot == mData->mCurrentSnapshot)
8107	{
8108	if (isModified())
8109	{
8110	rc = saveSettings();
8111	CheckComRCReturnRC (rc);
8112	}
8113	}
8114
8115	/* create a progress object. The number of operations is:
8116	* 1 (preparing) + # of hard disks + 1 if the snapshot is online
8117	*/
8118	ComObjPtr<Progress> progress;
8119	progress.createObject();
8120	rc = progress->init (mParent, aInitiator,
8121	Bstr(Utf8StrFmt(tr("Discarding snapshot '%s'"),
8122	snapshot->getName().c_str())),
8123	FALSE /* aCancelable */,
8124	1 + (ULONG)snapshot->getSnapshotMachine()->mHDData->mAttachments.size() +
8125	(snapshot->stateFilePath().isNull() ? 0 : 1),
8126	Bstr (tr ("Preparing to discard snapshot")));
8127	AssertComRCReturn (rc, rc);
8128
8129	/* create and start the task on a separate thread */
8130	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
8131	int vrc = RTThreadCreate (NULL, taskHandler,
8132	(void *) task,
8133	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
8134	if (RT_FAILURE(vrc))
8135	delete task;
8136	ComAssertRCRet (vrc, E_FAIL);
8137
8138	/* set the proper machine state (note: after creating a Task instance) */
8139	setMachineState(MachineState_Discarding);
8140
8141	/* return the progress to the caller */
8142	progress.queryInterfaceTo(aProgress);
8143
8144	/* return the new state to the caller */
8145	*aMachineState = mData->mMachineState;
8146
8147	return S_OK;
8148	}
8149
8150	/**
8151	* @note Locks this + children objects for writing!
8152	*/
8153	STDMETHODIMP SessionMachine::DiscardCurrentState (
8154	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
8155	{
8156	LogFlowThisFunc(("\n"));
8157
8158	AssertReturn(aInitiator, E_INVALIDARG);
8159	AssertReturn(aMachineState && aProgress, E_POINTER);
8160
8161	AutoCaller autoCaller(this);
8162	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8163
8164	AutoWriteLock alock(this);
8165
8166	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8167
8168	if (mData->mCurrentSnapshot.isNull())
8169	return setError(VBOX_E_INVALID_OBJECT_STATE,
8170	tr("Could not discard the current state of the machine '%ls' because it doesn't have any snapshots"),
8171	mUserData->mName.raw());
8172
8173	/* create a progress object. The number of operations is: 1 (preparing) + #
8174	* of hard disks + 1 (if we need to copy the saved state file) */
8175	ComObjPtr<Progress> progress;
8176	progress.createObject();
8177	{
8178	ULONG opCount = 1 + (ULONG)mData->mCurrentSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
8179	if (mData->mCurrentSnapshot->stateFilePath())
8180	++ opCount;
8181	progress->init (mParent, aInitiator,
8182	Bstr (tr ("Discarding current machine state")),
8183	FALSE /* aCancelable */, opCount,
8184	Bstr (tr ("Preparing to discard current state")));
8185	}
8186
8187	/* create and start the task on a separate thread (note that it will not
8188	* start working until we release alock) */
8189	DiscardCurrentStateTask *task =
8190	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
8191	int vrc = RTThreadCreate (NULL, taskHandler,
8192	(void *) task,
8193	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
8194	if (RT_FAILURE(vrc))
8195	{
8196	delete task;
8197	ComAssertRCRet (vrc, E_FAIL);
8198	}
8199
8200	/* set the proper machine state (note: after creating a Task instance) */
8201	setMachineState (MachineState_Discarding);
8202
8203	/* return the progress to the caller */
8204	progress.queryInterfaceTo(aProgress);
8205
8206	/* return the new state to the caller */
8207	*aMachineState = mData->mMachineState;
8208
8209	return S_OK;
8210	}
8211
8212	/**
8213	* @note Locks thos object for writing!
8214	*/
8215	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState(IConsole *aInitiator,
8216	MachineState_T *aMachineState,
8217	IProgress **aProgress)
8218	{
8219	LogFlowThisFunc(("\n"));
8220
8221	AssertReturn(aInitiator, E_INVALIDARG);
8222	AssertReturn(aMachineState && aProgress, E_POINTER);
8223
8224	AutoCaller autoCaller(this);
8225	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8226
8227	AutoWriteLock alock(this);
8228
8229	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8230
8231	if (mData->mCurrentSnapshot.isNull())
8232	return setError(VBOX_E_INVALID_OBJECT_STATE,
8233	tr("Could not discard the current state of the machine '%ls' "
8234	"because it doesn't have any snapshots"),
8235	mUserData->mName.raw());
8236
8237	/* create a progress object. The number of operations is:
8238	* 1 (preparing) + # of hard disks in the current snapshot +
8239	* # of hard disks in the previous snapshot +
8240	* 1 if we need to copy the saved state file of the previous snapshot +
8241	* 1 if the current snapshot is online
8242	* or (if there is no previous snapshot):
8243	* 1 (preparing) + # of hard disks in the current snapshot * 2 +
8244	* 1 if we need to copy the saved state file of the current snapshot * 2
8245	*/
8246	ComObjPtr<Progress> progress;
8247	progress.createObject();
8248	{
8249	ComObjPtr<Snapshot> curSnapshot = mData->mCurrentSnapshot;
8250	ComObjPtr<Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
8251
8252	ULONG opCount = 1;
8253	if (prevSnapshot)
8254	{
8255	opCount += (ULONG)curSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
8256	opCount += (ULONG)prevSnapshot->getSnapshotMachine()->mHDData->mAttachments.size();
8257	if (prevSnapshot->stateFilePath())
8258	++opCount;
8259	if (curSnapshot->stateFilePath())
8260	++opCount;
8261	}
8262	else
8263	{
8264	opCount +=
8265	(ULONG)curSnapshot->getSnapshotMachine()->mHDData->mAttachments.size() * 2;
8266	if (curSnapshot->stateFilePath())
8267	opCount += 2;
8268	}
8269
8270	progress->init(mParent, aInitiator,
8271	Bstr (tr ("Discarding current machine snapshot and state")),
8272	FALSE /* aCancelable */, opCount,
8273	Bstr (tr ("Preparing to discard current snapshot and state")));
8274	}
8275
8276	/* create and start the task on a separate thread */
8277	DiscardCurrentStateTask *task =
8278	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
8279	int vrc = RTThreadCreate(NULL, taskHandler,
8280	(void *) task,
8281	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurStSnp");
8282	if (RT_FAILURE(vrc))
8283	{
8284	delete task;
8285	ComAssertRCRet(vrc, E_FAIL);
8286	}
8287
8288	/* set the proper machine state (note: after creating a Task instance) */
8289	setMachineState(MachineState_Discarding);
8290
8291	/* return the progress to the caller */
8292	progress.queryInterfaceTo(aProgress);
8293
8294	/* return the new state to the caller */
8295	*aMachineState = mData->mMachineState;
8296
8297	return S_OK;
8298	}
8299
8300	STDMETHODIMP SessionMachine::PullGuestProperties(ComSafeArrayOut(BSTR, aNames),
8301	ComSafeArrayOut(BSTR, aValues),
8302	ComSafeArrayOut(ULONG64, aTimestamps),
8303	ComSafeArrayOut(BSTR, aFlags))
8304	{
8305	LogFlowThisFunc(("\n"));
8306
8307	#ifdef VBOX_WITH_GUEST_PROPS
8308	using namespace guestProp;
8309
8310	AutoCaller autoCaller(this);
8311	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8312
8313	AutoReadLock alock(this);
8314
8315	AssertReturn(!ComSafeArrayOutIsNull(aNames), E_POINTER);
8316	AssertReturn(!ComSafeArrayOutIsNull(aValues), E_POINTER);
8317	AssertReturn(!ComSafeArrayOutIsNull(aTimestamps), E_POINTER);
8318	AssertReturn(!ComSafeArrayOutIsNull(aFlags), E_POINTER);
8319
8320	size_t cEntries = mHWData->mGuestProperties.size();
8321	com::SafeArray<BSTR> names (cEntries);
8322	com::SafeArray<BSTR> values (cEntries);
8323	com::SafeArray<ULONG64> timestamps (cEntries);
8324	com::SafeArray<BSTR> flags (cEntries);
8325	unsigned i = 0;
8326	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
8327	it != mHWData->mGuestProperties.end();
8328	++it)
8329	{
8330	char szFlags[MAX_FLAGS_LEN + 1];
8331	it->strName.cloneTo(&names[i]);
8332	it->strValue.cloneTo(&values[i]);
8333	timestamps[i] = it->mTimestamp;
8334	writeFlags(it->mFlags, szFlags);
8335	Bstr(szFlags).cloneTo(&flags[i]);
8336	++i;
8337	}
8338	names.detachTo(ComSafeArrayOutArg(aNames));
8339	values.detachTo(ComSafeArrayOutArg(aValues));
8340	timestamps.detachTo(ComSafeArrayOutArg(aTimestamps));
8341	flags.detachTo(ComSafeArrayOutArg(aFlags));
8342	mHWData->mPropertyServiceActive = true;
8343	return S_OK;
8344	#else
8345	ReturnComNotImplemented();
8346	#endif
8347	}
8348
8349	STDMETHODIMP SessionMachine::PushGuestProperties(ComSafeArrayIn (IN_BSTR, aNames),
8350	ComSafeArrayIn (IN_BSTR, aValues),
8351	ComSafeArrayIn (ULONG64, aTimestamps),
8352	ComSafeArrayIn (IN_BSTR, aFlags))
8353	{
8354	LogFlowThisFunc(("\n"));
8355
8356	#ifdef VBOX_WITH_GUEST_PROPS
8357	using namespace guestProp;
8358
8359	AutoCaller autoCaller(this);
8360	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8361
8362	AutoWriteLock alock(this);
8363
8364	/* Temporarily reset the registered flag, so that our machine state
8365	* changes (i.e. mHWData.backup()) succeed. (isMutable() used in
8366	* all setters will return FALSE for a Machine instance if mRegistered
8367	* is TRUE). This is copied from registeredInit(), and may or may not be
8368	* the right way to handle this. */
8369	mData->mRegistered = FALSE;
8370	HRESULT rc = checkStateDependency(MutableStateDep);
8371	LogRel (("checkStateDependency(MutableStateDep) returned 0x%x\n", rc));
8372	CheckComRCReturnRC(rc);
8373
8374	// ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
8375
8376	AssertReturn(!ComSafeArrayInIsNull (aNames), E_POINTER);
8377	AssertReturn(!ComSafeArrayInIsNull (aValues), E_POINTER);
8378	AssertReturn(!ComSafeArrayInIsNull (aTimestamps), E_POINTER);
8379	AssertReturn(!ComSafeArrayInIsNull (aFlags), E_POINTER);
8380
8381	com::SafeArray<IN_BSTR> names (ComSafeArrayInArg (aNames));
8382	com::SafeArray<IN_BSTR> values (ComSafeArrayInArg (aValues));
8383	com::SafeArray<ULONG64> timestamps (ComSafeArrayInArg (aTimestamps));
8384	com::SafeArray<IN_BSTR> flags (ComSafeArrayInArg (aFlags));
8385	DiscardSettings();
8386	mHWData.backup();
8387	mHWData->mGuestProperties.erase (mHWData->mGuestProperties.begin(),
8388	mHWData->mGuestProperties.end());
8389	for (unsigned i = 0; i < names.size(); ++i)
8390	{
8391	uint32_t fFlags = NILFLAG;
8392	validateFlags (Utf8Str (flags[i]).raw(), &fFlags);
8393	HWData::GuestProperty property = { names[i], values[i], timestamps[i], fFlags };
8394	mHWData->mGuestProperties.push_back (property);
8395	}
8396	mHWData->mPropertyServiceActive = false;
8397	alock.unlock();
8398	SaveSettings();
8399	/* Restore the mRegistered flag. */
8400	mData->mRegistered = TRUE;
8401	return S_OK;
8402	#else
8403	ReturnComNotImplemented();
8404	#endif
8405	}
8406
8407	STDMETHODIMP SessionMachine::PushGuestProperty(IN_BSTR aName,
8408	IN_BSTR aValue,
8409	ULONG64 aTimestamp,
8410	IN_BSTR aFlags)
8411	{
8412	LogFlowThisFunc(("\n"));
8413
8414	#ifdef VBOX_WITH_GUEST_PROPS
8415	using namespace guestProp;
8416
8417	CheckComArgNotNull (aName);
8418	if ((aValue != NULL) && (!VALID_PTR (aValue) \|\| !VALID_PTR (aFlags)))
8419	return E_POINTER; /* aValue can be NULL to indicate deletion */
8420
8421	try
8422	{
8423	Utf8Str utf8Name(aName);
8424	Utf8Str utf8Flags(aFlags);
8425	Utf8Str utf8Patterns(mHWData->mGuestPropertyNotificationPatterns);
8426
8427	uint32_t fFlags = NILFLAG;
8428	if ((aFlags != NULL) && RT_FAILURE(validateFlags (utf8Flags.raw(), &fFlags)))
8429	return E_INVALIDARG;
8430
8431	bool matchAll = false;
8432	if (utf8Patterns.isEmpty())
8433	matchAll = true;
8434
8435	AutoCaller autoCaller(this);
8436	CheckComRCReturnRC(autoCaller.rc());
8437
8438	AutoWriteLock alock(this);
8439
8440	HRESULT rc = checkStateDependency(MutableStateDep);
8441	CheckComRCReturnRC(rc);
8442
8443	mHWData.backup();
8444	for (HWData::GuestPropertyList::iterator iter = mHWData->mGuestProperties.begin();
8445	iter != mHWData->mGuestProperties.end();
8446	++iter)
8447	if (utf8Name == iter->strName)
8448	{
8449	mHWData->mGuestProperties.erase(iter);
8450	break;
8451	}
8452	if (aValue != NULL)
8453	{
8454	HWData::GuestProperty property = { aName, aValue, aTimestamp, fFlags };
8455	mHWData->mGuestProperties.push_back (property);
8456	}
8457
8458	/* send a callback notification if appropriate */
8459	alock.leave();
8460	if ( matchAll
8461	\|\| RTStrSimplePatternMultiMatch(utf8Patterns.raw(),
8462	RTSTR_MAX,
8463	utf8Name.raw(),
8464	RTSTR_MAX, NULL)
8465	)
8466	mParent->onGuestPropertyChange(mData->mUuid,
8467	aName,
8468	aValue,
8469	aFlags);
8470	}
8471	catch(std::bad_alloc &)
8472	{
8473	return E_OUTOFMEMORY;
8474	}
8475	return S_OK;
8476	#else
8477	ReturnComNotImplemented();
8478	#endif
8479	}
8480
8481	// public methods only for internal purposes
8482	/////////////////////////////////////////////////////////////////////////////
8483
8484	/**
8485	* Called from the client watcher thread to check for expected or unexpected
8486	* death of the client process that has a direct session to this machine.
8487	*
8488	* On Win32 and on OS/2, this method is called only when we've got the
8489	* mutex (i.e. the client has either died or terminated normally) so it always
8490	* returns @c true (the client is terminated, the session machine is
8491	* uninitialized).
8492	*
8493	* On other platforms, the method returns @c true if the client process has
8494	* terminated normally or abnormally and the session machine was uninitialized,
8495	* and @c false if the client process is still alive.
8496	*
8497	* @note Locks this object for writing.
8498	*/
8499	bool SessionMachine::checkForDeath()
8500	{
8501	Uninit::Reason reason;
8502	bool terminated = false;
8503
8504	/* Enclose autoCaller with a block because calling uninit() from under it
8505	* will deadlock. */
8506	{
8507	AutoCaller autoCaller(this);
8508	if (!autoCaller.isOk())
8509	{
8510	/* return true if not ready, to cause the client watcher to exclude
8511	* the corresponding session from watching */
8512	LogFlowThisFunc(("Already uninitialized!"));
8513	return true;
8514	}
8515
8516	AutoWriteLock alock(this);
8517
8518	/* Determine the reason of death: if the session state is Closing here,
8519	* everything is fine. Otherwise it means that the client did not call
8520	* OnSessionEnd() before it released the IPC semaphore. This may happen
8521	* either because the client process has abnormally terminated, or
8522	* because it simply forgot to call ISession::Close() before exiting. We
8523	* threat the latter also as an abnormal termination (see
8524	* Session::uninit() for details). */
8525	reason = mData->mSession.mState == SessionState_Closing ?
8526	Uninit::Normal :
8527	Uninit::Abnormal;
8528
8529	#if defined(RT_OS_WINDOWS)
8530
8531	AssertMsg (mIPCSem, ("semaphore must be created"));
8532
8533	/* release the IPC mutex */
8534	::ReleaseMutex (mIPCSem);
8535
8536	terminated = true;
8537
8538	#elif defined(RT_OS_OS2)
8539
8540	AssertMsg (mIPCSem, ("semaphore must be created"));
8541
8542	/* release the IPC mutex */
8543	::DosReleaseMutexSem (mIPCSem);
8544
8545	terminated = true;
8546
8547	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8548
8549	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
8550
8551	int val = ::semctl (mIPCSem, 0, GETVAL);
8552	if (val > 0)
8553	{
8554	/* the semaphore is signaled, meaning the session is terminated */
8555	terminated = true;
8556	}
8557
8558	#else
8559	# error "Port me!"
8560	#endif
8561
8562	} /* AutoCaller block */
8563
8564	if (terminated)
8565	uninit (reason);
8566
8567	return terminated;
8568	}
8569
8570	/**
8571	* @note Locks this object for reading.
8572	*/
8573	HRESULT SessionMachine::onDVDDriveChange()
8574	{
8575	LogFlowThisFunc(("\n"));
8576
8577	AutoCaller autoCaller(this);
8578	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8579
8580	ComPtr<IInternalSessionControl> directControl;
8581	{
8582	AutoReadLock alock(this);
8583	directControl = mData->mSession.mDirectControl;
8584	}
8585
8586	/* ignore notifications sent after #OnSessionEnd() is called */
8587	if (!directControl)
8588	return S_OK;
8589
8590	return directControl->OnDVDDriveChange();
8591	}
8592
8593	/**
8594	* @note Locks this object for reading.
8595	*/
8596	HRESULT SessionMachine::onFloppyDriveChange()
8597	{
8598	LogFlowThisFunc(("\n"));
8599
8600	AutoCaller autoCaller(this);
8601	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8602
8603	ComPtr<IInternalSessionControl> directControl;
8604	{
8605	AutoReadLock alock(this);
8606	directControl = mData->mSession.mDirectControl;
8607	}
8608
8609	/* ignore notifications sent after #OnSessionEnd() is called */
8610	if (!directControl)
8611	return S_OK;
8612
8613	return directControl->OnFloppyDriveChange();
8614	}
8615
8616	/**
8617	* @note Locks this object for reading.
8618	*/
8619	HRESULT SessionMachine::onNetworkAdapterChange (INetworkAdapter *networkAdapter, BOOL changeAdapter)
8620	{
8621	LogFlowThisFunc(("\n"));
8622
8623	AutoCaller autoCaller(this);
8624	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8625
8626	ComPtr<IInternalSessionControl> directControl;
8627	{
8628	AutoReadLock alock(this);
8629	directControl = mData->mSession.mDirectControl;
8630	}
8631
8632	/* ignore notifications sent after #OnSessionEnd() is called */
8633	if (!directControl)
8634	return S_OK;
8635
8636	return directControl->OnNetworkAdapterChange (networkAdapter, changeAdapter);
8637	}
8638
8639	/**
8640	* @note Locks this object for reading.
8641	*/
8642	HRESULT SessionMachine::onSerialPortChange (ISerialPort *serialPort)
8643	{
8644	LogFlowThisFunc(("\n"));
8645
8646	AutoCaller autoCaller(this);
8647	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8648
8649	ComPtr<IInternalSessionControl> directControl;
8650	{
8651	AutoReadLock alock(this);
8652	directControl = mData->mSession.mDirectControl;
8653	}
8654
8655	/* ignore notifications sent after #OnSessionEnd() is called */
8656	if (!directControl)
8657	return S_OK;
8658
8659	return directControl->OnSerialPortChange (serialPort);
8660	}
8661
8662	/**
8663	* @note Locks this object for reading.
8664	*/
8665	HRESULT SessionMachine::onParallelPortChange (IParallelPort *parallelPort)
8666	{
8667	LogFlowThisFunc(("\n"));
8668
8669	AutoCaller autoCaller(this);
8670	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8671
8672	ComPtr<IInternalSessionControl> directControl;
8673	{
8674	AutoReadLock alock(this);
8675	directControl = mData->mSession.mDirectControl;
8676	}
8677
8678	/* ignore notifications sent after #OnSessionEnd() is called */
8679	if (!directControl)
8680	return S_OK;
8681
8682	return directControl->OnParallelPortChange (parallelPort);
8683	}
8684
8685	/**
8686	* @note Locks this object for reading.
8687	*/
8688	HRESULT SessionMachine::onStorageControllerChange ()
8689	{
8690	LogFlowThisFunc(("\n"));
8691
8692	AutoCaller autoCaller(this);
8693	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8694
8695	ComPtr<IInternalSessionControl> directControl;
8696	{
8697	AutoReadLock alock(this);
8698	directControl = mData->mSession.mDirectControl;
8699	}
8700
8701	/* ignore notifications sent after #OnSessionEnd() is called */
8702	if (!directControl)
8703	return S_OK;
8704
8705	return directControl->OnStorageControllerChange ();
8706	}
8707
8708	/**
8709	* @note Locks this object for reading.
8710	*/
8711	HRESULT SessionMachine::onVRDPServerChange()
8712	{
8713	LogFlowThisFunc(("\n"));
8714
8715	AutoCaller autoCaller(this);
8716	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8717
8718	ComPtr<IInternalSessionControl> directControl;
8719	{
8720	AutoReadLock alock(this);
8721	directControl = mData->mSession.mDirectControl;
8722	}
8723
8724	/* ignore notifications sent after #OnSessionEnd() is called */
8725	if (!directControl)
8726	return S_OK;
8727
8728	return directControl->OnVRDPServerChange();
8729	}
8730
8731	/**
8732	* @note Locks this object for reading.
8733	*/
8734	HRESULT SessionMachine::onUSBControllerChange()
8735	{
8736	LogFlowThisFunc(("\n"));
8737
8738	AutoCaller autoCaller(this);
8739	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8740
8741	ComPtr<IInternalSessionControl> directControl;
8742	{
8743	AutoReadLock alock(this);
8744	directControl = mData->mSession.mDirectControl;
8745	}
8746
8747	/* ignore notifications sent after #OnSessionEnd() is called */
8748	if (!directControl)
8749	return S_OK;
8750
8751	return directControl->OnUSBControllerChange();
8752	}
8753
8754	/**
8755	* @note Locks this object for reading.
8756	*/
8757	HRESULT SessionMachine::onSharedFolderChange()
8758	{
8759	LogFlowThisFunc(("\n"));
8760
8761	AutoCaller autoCaller(this);
8762	AssertComRCReturnRC(autoCaller.rc());
8763
8764	ComPtr<IInternalSessionControl> directControl;
8765	{
8766	AutoReadLock alock(this);
8767	directControl = mData->mSession.mDirectControl;
8768	}
8769
8770	/* ignore notifications sent after #OnSessionEnd() is called */
8771	if (!directControl)
8772	return S_OK;
8773
8774	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
8775	}
8776
8777	/**
8778	* Returns @c true if this machine's USB controller reports it has a matching
8779	* filter for the given USB device and @c false otherwise.
8780	*
8781	* @note Locks this object for reading.
8782	*/
8783	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr<HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
8784	{
8785	AutoCaller autoCaller(this);
8786	/* silently return if not ready -- this method may be called after the
8787	* direct machine session has been called */
8788	if (!autoCaller.isOk())
8789	return false;
8790
8791	AutoReadLock alock(this);
8792
8793	#ifdef VBOX_WITH_USB
8794	switch (mData->mMachineState)
8795	{
8796	case MachineState_Starting:
8797	case MachineState_Restoring:
8798	case MachineState_Paused:
8799	case MachineState_Running:
8800	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
8801	default: break;
8802	}
8803	#else
8804	NOREF(aDevice);
8805	NOREF(aMaskedIfs);
8806	#endif
8807	return false;
8808	}
8809
8810	/**
8811	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
8812	*/
8813	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
8814	IVirtualBoxErrorInfo *aError,
8815	ULONG aMaskedIfs)
8816	{
8817	LogFlowThisFunc(("\n"));
8818
8819	AutoCaller autoCaller(this);
8820
8821	/* This notification may happen after the machine object has been
8822	* uninitialized (the session was closed), so don't assert. */
8823	CheckComRCReturnRC(autoCaller.rc());
8824
8825	ComPtr<IInternalSessionControl> directControl;
8826	{
8827	AutoReadLock alock(this);
8828	directControl = mData->mSession.mDirectControl;
8829	}
8830
8831	/* fail on notifications sent after #OnSessionEnd() is called, it is
8832	* expected by the caller */
8833	if (!directControl)
8834	return E_FAIL;
8835
8836	/* No locks should be held at this point. */
8837	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
8838	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
8839
8840	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
8841	}
8842
8843	/**
8844	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
8845	*/
8846	HRESULT SessionMachine::onUSBDeviceDetach (IN_BSTR aId,
8847	IVirtualBoxErrorInfo *aError)
8848	{
8849	LogFlowThisFunc(("\n"));
8850
8851	AutoCaller autoCaller(this);
8852
8853	/* This notification may happen after the machine object has been
8854	* uninitialized (the session was closed), so don't assert. */
8855	CheckComRCReturnRC(autoCaller.rc());
8856
8857	ComPtr<IInternalSessionControl> directControl;
8858	{
8859	AutoReadLock alock(this);
8860	directControl = mData->mSession.mDirectControl;
8861	}
8862
8863	/* fail on notifications sent after #OnSessionEnd() is called, it is
8864	* expected by the caller */
8865	if (!directControl)
8866	return E_FAIL;
8867
8868	/* No locks should be held at this point. */
8869	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
8870	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
8871
8872	return directControl->OnUSBDeviceDetach (aId, aError);
8873	}
8874
8875	// protected methods
8876	/////////////////////////////////////////////////////////////////////////////
8877
8878	/**
8879	* Helper method to finalize saving the state.
8880	*
8881	* @note Must be called from under this object's lock.
8882	*
8883	* @param aSuccess TRUE if the snapshot has been taken successfully
8884	*
8885	* @note Locks mParent + this objects for writing.
8886	*/
8887	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
8888	{
8889	LogFlowThisFuncEnter();
8890
8891	AutoCaller autoCaller(this);
8892	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8893
8894	/* saveSettings() needs mParent lock */
8895	AutoMultiWriteLock2 alock (mParent, this);
8896
8897	HRESULT rc = S_OK;
8898
8899	if (aSuccess)
8900	{
8901	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
8902
8903	/* save all VM settings */
8904	rc = saveSettings();
8905	}
8906	else
8907	{
8908	/* delete the saved state file (it might have been already created) */
8909	RTFileDelete(Utf8Str(mSnapshotData.mStateFilePath).c_str());
8910	}
8911
8912	/* remove the completed progress object */
8913	mParent->removeProgress (mSnapshotData.mProgressId);
8914
8915	/* clear out the temporary saved state data */
8916	mSnapshotData.mLastState = MachineState_Null;
8917	mSnapshotData.mProgressId.clear();
8918	mSnapshotData.mStateFilePath.setNull();
8919
8920	LogFlowThisFuncLeave();
8921	return rc;
8922	}
8923
8924	/**
8925	* Helper method to finalize taking a snapshot. Gets called to finalize the
8926	* "take snapshot" procedure.
8927	*
8928	* Expected to be called after completing all the tasks related to taking the
8929	* snapshot, either successfully or unsuccessfilly.
8930	*
8931	* @param aSuccess TRUE if the snapshot has been taken successfully.
8932	*
8933	* @note Locks this objects for writing.
8934	*/
8935	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
8936	{
8937	LogFlowThisFuncEnter();
8938
8939	AutoCaller autoCaller(this);
8940	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8941
8942	AutoMultiWriteLock2 alock(mParent, this);
8943	// saveSettings needs VirtualBox lock
8944
8945	AssertReturn(!mSnapshotData.mSnapshot.isNull(), E_FAIL);
8946
8947	MultiResult rc (S_OK);
8948
8949	if (aSuccess)
8950	{
8951	/* the server progress must be completed on success */
8952	Assert (mSnapshotData.mServerProgress->completed());
8953
8954	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
8955
8956	/* memorize the first snapshot if necessary */
8957	if (!mData->mFirstSnapshot)
8958	mData->mFirstSnapshot = mData->mCurrentSnapshot;
8959
8960	if (!Global::IsOnline (mSnapshotData.mLastState))
8961	/* the machine was powered off or saved when taking a snapshot, so
8962	* reset the mCurrentStateModified flag */
8963	mData->mCurrentStateModified = FALSE;
8964
8965	rc = saveSettings();
8966	}
8967
8968	if (aSuccess && SUCCEEDED(rc))
8969	{
8970	bool online = Global::IsOnline (mSnapshotData.mLastState);
8971
8972	/* associate old hard disks with the snapshot and do locking/unlocking*/
8973	fixupHardDisks(true /* aCommit */, online);
8974
8975	/* inform callbacks */
8976	mParent->onSnapshotTaken(mData->mUuid,
8977	mSnapshotData.mSnapshot->getId());
8978	}
8979	else
8980	{
8981	/* wait for the completion of the server progress (diff VDI creation) */
8982	/// @todo (dmik) later, we will definitely want to cancel it instead
8983	// (when the cancel function is implemented)
8984	mSnapshotData.mServerProgress->WaitForCompletion (-1);
8985
8986	/* delete all differencing hard disks created (this will also attach
8987	* their parents back by rolling back mHDData) */
8988	fixupHardDisks(false /* aCommit */);
8989
8990	/* delete the saved state file (it might have been already created) */
8991	if (mSnapshotData.mSnapshot->stateFilePath())
8992	RTFileDelete(Utf8Str(mSnapshotData.mSnapshot->stateFilePath()).c_str());
8993
8994	mSnapshotData.mSnapshot->uninit();
8995	}
8996
8997	/* clear out the snapshot data */
8998	mSnapshotData.mLastState = MachineState_Null;
8999	mSnapshotData.mSnapshot.setNull();
9000	mSnapshotData.mServerProgress.setNull();
9001
9002	/* uninitialize the combined progress (to remove it from the VBox collection) */
9003	if (!mSnapshotData.mCombinedProgress.isNull())
9004	{
9005	mSnapshotData.mCombinedProgress->uninit();
9006	mSnapshotData.mCombinedProgress.setNull();
9007	}
9008
9009	LogFlowThisFuncLeave();
9010	return rc;
9011	}
9012
9013	/**
9014	* Take snapshot task handler. Must be called only by
9015	* TakeSnapshotTask::handler()!
9016	*
9017	* The sole purpose of this task is to asynchronously create differencing VDIs
9018	* and copy the saved state file (when necessary). The VM process will wait for
9019	* this task to complete using the mSnapshotData.mServerProgress returned to it.
9020	*
9021	* @note Locks this object for writing.
9022	*/
9023	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask & /* aTask */)
9024	{
9025	LogFlowThisFuncEnter();
9026
9027	AutoCaller autoCaller(this);
9028
9029	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
9030	if (!autoCaller.isOk())
9031	{
9032	/* we might have been uninitialized because the session was accidentally
9033	* closed by the client, so don't assert */
9034	LogFlowThisFuncLeave();
9035	return;
9036	}
9037
9038	AutoWriteLock alock(this);
9039
9040	HRESULT rc = S_OK;
9041
9042	bool online = Global::IsOnline (mSnapshotData.mLastState);
9043
9044	LogFlowThisFunc(("Creating differencing hard disks (online=%d)...\n",
9045	online));
9046
9047	mHDData.backup();
9048
9049	/* create new differencing hard disks and attach them to this machine */
9050	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
9051	mSnapshotData.mServerProgress,
9052	online);
9053
9054	if (SUCCEEDED(rc) && mSnapshotData.mLastState == MachineState_Saved)
9055	{
9056	Utf8Str stateFrom = mSSData->mStateFilePath;
9057	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
9058
9059	LogFlowThisFunc(("Copying the execution state from '%s' to '%s'...\n",
9060	stateFrom.raw(), stateTo.raw()));
9061
9062	mSnapshotData.mServerProgress->setNextOperation(Bstr(tr("Copying the execution state")),
9063	1); // weight
9064
9065	/* Leave the lock before a lengthy operation (mMachineState is
9066	* MachineState_Saving here) */
9067
9068	alock.leave();
9069
9070	/* copy the state file */
9071	int vrc = RTFileCopyEx(stateFrom.c_str(),
9072	stateTo.c_str(),
9073	0,
9074	progressCallback,
9075	static_cast<Progress*>(mSnapshotData.mServerProgress));
9076
9077	alock.enter();
9078
9079	if (RT_FAILURE(vrc))
9080	rc = setError(E_FAIL,
9081	tr("Could not copy the state file '%s' to '%s' (%Rrc)"),
9082	stateFrom.raw(),
9083	stateTo.raw(),
9084	vrc);
9085	}
9086
9087	/* we have to call endTakingSnapshot() ourselves if the snapshot was taken
9088	* offline because the VM process will not do it in this case
9089	*/
9090	if (!online)
9091	{
9092	LogFlowThisFunc(("Finalizing the taken snapshot (rc=%Rhrc)...\n", rc));
9093
9094	{
9095	ErrorInfoKeeper eik;
9096
9097	setMachineState (mSnapshotData.mLastState);
9098	updateMachineStateOnClient();
9099	}
9100
9101	/* finalize the progress after setting the state, for consistency */
9102	mSnapshotData.mServerProgress->notifyComplete (rc);
9103
9104	endTakingSnapshot (SUCCEEDED(rc));
9105	}
9106	else
9107	{
9108	mSnapshotData.mServerProgress->notifyComplete (rc);
9109	}
9110
9111	LogFlowThisFuncLeave();
9112	}
9113
9114	/**
9115	* Helper struct for SessionMachine::discardSnapshotHandler().
9116	*/
9117	struct HardDiskDiscardRec
9118	{
9119	HardDiskDiscardRec() : chain (NULL) {}
9120
9121	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
9122	HardDisk::MergeChain *aChain = NULL)
9123	: hd (aHd), chain (aChain) {}
9124
9125	HardDiskDiscardRec (const ComObjPtr<HardDisk> &aHd,
9126	HardDisk::MergeChain *aChain,
9127	const ComObjPtr<HardDisk> &aReplaceHd,
9128	const ComObjPtr<HardDiskAttachment> &aReplaceHda,
9129	const Guid &aSnapshotId)
9130	: hd (aHd), chain (aChain)
9131	, replaceHd (aReplaceHd), replaceHda (aReplaceHda)
9132	, snapshotId (aSnapshotId) {}
9133
9134	ComObjPtr<HardDisk> hd;
9135	HardDisk::MergeChain *chain;
9136	/* these are for the replace hard disk case: */
9137	ComObjPtr<HardDisk> replaceHd;
9138	ComObjPtr<HardDiskAttachment> replaceHda;
9139	Guid snapshotId;
9140	};
9141
9142	typedef std::list <HardDiskDiscardRec> HardDiskDiscardRecList;
9143
9144	/**
9145	* Discard snapshot task handler. Must be called only by
9146	* DiscardSnapshotTask::handler()!
9147	*
9148	* When aTask.subTask is true, the associated progress object is left
9149	* uncompleted on success. On failure, the progress is marked as completed
9150	* regardless of this parameter.
9151	*
9152	* @note Locks mParent + this + child objects for writing!
9153	*/
9154	void SessionMachine::discardSnapshotHandler(DiscardSnapshotTask &aTask)
9155	{
9156	LogFlowThisFuncEnter();
9157
9158	AutoCaller autoCaller(this);
9159
9160	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
9161	if (!autoCaller.isOk())
9162	{
9163	/* we might have been uninitialized because the session was accidentally
9164	* closed by the client, so don't assert */
9165	aTask.progress->notifyComplete (
9166	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
9167	tr ("The session has been accidentally closed"));
9168
9169	LogFlowThisFuncLeave();
9170	return;
9171	}
9172
9173	/* Locking order: */
9174	AutoMultiWriteLock3 alock(this->lockHandle(),
9175	this->snapshotsTreeLockHandle(),
9176	aTask.snapshot->lockHandle());
9177
9178	ComPtr<SnapshotMachine> sm = aTask.snapshot->getSnapshotMachine();
9179	/* no need to lock the snapshot machine since it is const by definiton */
9180
9181	HRESULT rc = S_OK;
9182
9183	/* save the snapshot ID (for callbacks) */
9184	Guid snapshotId = aTask.snapshot->getId();
9185
9186	HardDiskDiscardRecList toDiscard;
9187
9188	bool settingsChanged = false;
9189
9190	try
9191	{
9192	/* first pass: */
9193	LogFlowThisFunc(("1: Checking hard disk merge prerequisites...\n"));
9194
9195	for (HDData::AttachmentList::const_iterator it = sm->mHDData->mAttachments.begin();
9196	it != sm->mHDData->mAttachments.end();
9197	++ it)
9198	{
9199	ComObjPtr<HardDiskAttachment> hda = *it;
9200	ComObjPtr<HardDisk> hd = hda->hardDisk();
9201
9202	/* HardDisk::prepareDiscard() reqiuires a write lock */
9203	AutoWriteLock hdLock(hd);
9204
9205	if (hd->type() != HardDiskType_Normal)
9206	{
9207	/* skip writethrough hard disks */
9208
9209	Assert (hd->type() == HardDiskType_Writethrough);
9210
9211	rc = aTask.progress->setNextOperation(BstrFmt(tr("Skipping writethrough hard disk '%s'"),
9212	hd->root()->name().raw()),
9213	1); // weight
9214	CheckComRCThrowRC(rc);
9215
9216	continue;
9217	}
9218
9219	HardDisk::MergeChain *chain = NULL;
9220
9221	/* needs to be discarded (merged with the child if any), check
9222	* prerequisites */
9223	rc = hd->prepareDiscard (chain);
9224	CheckComRCThrowRC(rc);
9225
9226	if (hd->parent().isNull() && chain != NULL)
9227	{
9228	/* it's a base hard disk so it will be a backward merge of its
9229	* only child to it (prepareDiscard() does necessary checks). We
9230	* need then to update the attachment that refers to the child
9231	* to refer to the parent insead. Don't forget to detach the
9232	* child (otherwise mergeTo() called by discard() will assert
9233	* because it will be going to delete the child) */
9234
9235	/* The below assert would be nice but I don't want to move
9236	* HardDisk::MergeChain to the header just for that
9237	* Assert (!chain->isForward()); */
9238
9239	Assert(hd->children().size() == 1);
9240
9241	ComObjPtr<HardDisk> replaceHd = hd->children().front();
9242
9243	Assert (replaceHd->backRefs().front().machineId == mData->mUuid);
9244	Assert (replaceHd->backRefs().front().snapshotIds.size() <= 1);
9245
9246	Guid snapshotId;
9247	if (replaceHd->backRefs().front().snapshotIds.size() == 1)
9248	snapshotId = replaceHd->backRefs().front().snapshotIds.front();
9249
9250	HRESULT rc2 = S_OK;
9251
9252	/* adjust back references */
9253	rc2 = replaceHd->detachFrom (mData->mUuid, snapshotId);
9254	AssertComRC(rc2);
9255
9256	rc2 = hd->attachTo (mData->mUuid, snapshotId);
9257	AssertComRC(rc2);
9258
9259	/* replace the hard disk in the attachment object */
9260	HDData::AttachmentList::iterator it;
9261	if (snapshotId.isEmpty())
9262	{
9263	/* in current state */
9264	it = std::find_if (mHDData->mAttachments.begin(),
9265	mHDData->mAttachments.end(),
9266	HardDiskAttachment::RefersTo (replaceHd));
9267	AssertBreak (it != mHDData->mAttachments.end());
9268	}
9269	else
9270	{
9271	/* in snapshot */
9272	ComObjPtr<Snapshot> snapshot;
9273	rc2 = findSnapshot (snapshotId, snapshot);
9274	AssertComRC (rc2);
9275
9276	/* don't lock the snapshot; cannot be modified outside */
9277	HDData::AttachmentList &snapAtts = snapshot->getSnapshotMachine()->mHDData->mAttachments;
9278	it = std::find_if (snapAtts.begin(),
9279	snapAtts.end(),
9280	HardDiskAttachment::RefersTo (replaceHd));
9281	AssertBreak (it != snapAtts.end());
9282	}
9283
9284	AutoWriteLock attLock (*it);
9285	(it)->updateHardDisk (hd, false / aImplicit */);
9286
9287	toDiscard.push_back (HardDiskDiscardRec (hd, chain, replaceHd,
9288	*it, snapshotId));
9289	continue;
9290	}
9291
9292	toDiscard.push_back (HardDiskDiscardRec (hd, chain));
9293	}
9294
9295	/* Now we checked that we can successfully merge all normal hard disks
9296	* (unless a runtime error like end-of-disc happens). Prior to
9297	* performing the actual merge, we want to discard the snapshot itself
9298	* and remove it from the XML file to make sure that a possible merge
9299	* ruintime error will not make this snapshot inconsistent because of
9300	* the partially merged or corrupted hard disks */
9301
9302	/* second pass: */
9303	LogFlowThisFunc(("2: Discarding snapshot...\n"));
9304
9305	{
9306	ComObjPtr<Snapshot> parentSnapshot = aTask.snapshot->parent();
9307	Bstr stateFilePath = aTask.snapshot->stateFilePath();
9308
9309	/* Note that discarding the snapshot will deassociate it from the
9310	* hard disks which will allow the merge+delete operation for them*/
9311	aTask.snapshot->beginDiscard();
9312	aTask.snapshot->uninit();
9313
9314	rc = saveAllSnapshots();
9315	CheckComRCThrowRC(rc);
9316
9317	/// @todo (dmik)
9318	// if we implement some warning mechanism later, we'll have
9319	// to return a warning if the state file path cannot be deleted
9320	if (stateFilePath)
9321	{
9322	aTask.progress->setNextOperation(Bstr(tr("Discarding the execution state")),
9323	1); // weight
9324
9325	RTFileDelete(Utf8Str(stateFilePath).c_str());
9326	}
9327
9328	/// @todo NEWMEDIA to provide a good level of fauilt tolerance, we
9329	/// should restore the shapshot in the snapshot tree if
9330	/// saveSnapshotSettings fails. Actually, we may call
9331	/// #saveSnapshotSettings() with a special flag that will tell it to
9332	/// skip the given snapshot as if it would have been discarded and
9333	/// only actually discard it if the save operation succeeds.
9334	}
9335
9336	/* here we come when we've irrevesibly discarded the snapshot which
9337	* means that the VM settigns (our relevant changes to mData) need to be
9338	* saved too */
9339	/// @todo NEWMEDIA maybe save everything in one operation in place of
9340	/// saveSnapshotSettings() above
9341	settingsChanged = true;
9342
9343	/* third pass: */
9344	LogFlowThisFunc(("3: Performing actual hard disk merging...\n"));
9345
9346	/* leave the locks before the potentially lengthy operation */
9347	alock.leave();
9348
9349	/// @todo NEWMEDIA turn the following errors into warnings because the
9350	/// snapshot itself has been already deleted (and interpret these
9351	/// warnings properly on the GUI side)
9352
9353	for (HardDiskDiscardRecList::iterator it = toDiscard.begin();
9354	it != toDiscard.end();)
9355	{
9356	rc = it->hd->discard (aTask.progress, it->chain);
9357	CheckComRCBreakRC(rc);
9358
9359	/* prevent from calling cancelDiscard() */
9360	it = toDiscard.erase (it);
9361	}
9362
9363	alock.enter();
9364
9365	CheckComRCThrowRC(rc);
9366	}
9367	catch (HRESULT aRC) { rc = aRC; }
9368
9369	if FAILED(rc)
9370	{
9371	HRESULT rc2 = S_OK;
9372
9373	/* un-prepare the remaining hard disks */
9374	for (HardDiskDiscardRecList::const_iterator it = toDiscard.begin();
9375	it != toDiscard.end(); ++ it)
9376	{
9377	it->hd->cancelDiscard (it->chain);
9378
9379	if (!it->replaceHd.isNull())
9380	{
9381	/* undo hard disk replacement */
9382
9383	rc2 = it->replaceHd->attachTo (mData->mUuid, it->snapshotId);
9384	AssertComRC(rc2);
9385
9386	rc2 = it->hd->detachFrom (mData->mUuid, it->snapshotId);
9387	AssertComRC(rc2);
9388
9389	AutoWriteLock attLock (it->replaceHda);
9390	it->replaceHda->updateHardDisk (it->replaceHd, false /* aImplicit */);
9391	}
9392	}
9393	}
9394
9395	if (!aTask.subTask \|\| FAILED(rc))
9396	{
9397	if (!aTask.subTask)
9398	{
9399	/* saveSettings() below needs a VirtualBox write lock and we need to
9400	* leave this object's lock to do this to follow the {parent-child}
9401	* locking rule. This is the last chance to do that while we are
9402	* still in a protective state which allows us to temporarily leave
9403	* the lock */
9404	alock.unlock();
9405	AutoWriteLock vboxLock(mParent);
9406	alock.lock();
9407
9408	/* preserve existing error info */
9409	ErrorInfoKeeper eik;
9410
9411	/* restore the machine state */
9412	setMachineState(aTask.state);
9413	updateMachineStateOnClient();
9414
9415	if (settingsChanged)
9416	saveSettings(SaveS_InformCallbacksAnyway);
9417	}
9418
9419	/* set the result (this will try to fetch current error info on failure) */
9420	aTask.progress->notifyComplete (rc);
9421	}
9422
9423	if (SUCCEEDED(rc))
9424	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
9425
9426	LogFlowThisFunc(("Done discarding snapshot (rc=%08X)\n", rc));
9427	LogFlowThisFuncLeave();
9428	}
9429
9430	/**
9431	* Discard current state task handler. Must be called only by
9432	* DiscardCurrentStateTask::handler()!
9433	*
9434	* @note Locks mParent + this object for writing.
9435	*/
9436	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
9437	{
9438	LogFlowThisFuncEnter();
9439
9440	AutoCaller autoCaller(this);
9441
9442	LogFlowThisFunc(("state=%d\n", autoCaller.state()));
9443	if (!autoCaller.isOk())
9444	{
9445	/* we might have been uninitialized because the session was accidentally
9446	* closed by the client, so don't assert */
9447	aTask.progress->notifyComplete (
9448	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
9449	tr ("The session has been accidentally closed"));
9450
9451	LogFlowThisFuncLeave();
9452	return;
9453	}
9454
9455	/* saveSettings() needs mParent lock */
9456	AutoWriteLock vboxLock (mParent);
9457
9458	/* @todo We don't need mParent lock so far so unlock() it. Better is to
9459	* provide an AutoWriteLock argument that lets create a non-locking
9460	* instance */
9461	vboxLock.unlock();
9462
9463	AutoWriteLock alock(this);
9464
9465	/* discard all current changes to mUserData (name, OSType etc.) (note that
9466	* the machine is powered off, so there is no need to inform the direct
9467	* session) */
9468	if (isModified())
9469	rollback (false /* aNotify */);
9470
9471	HRESULT rc = S_OK;
9472
9473	bool errorInSubtask = false;
9474	bool stateRestored = false;
9475
9476	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
9477
9478	try
9479	{
9480	/* discard the saved state file if the machine was Saved prior to this
9481	* operation */
9482	if (aTask.state == MachineState_Saved)
9483	{
9484	Assert (!mSSData->mStateFilePath.isEmpty());
9485	RTFileDelete(Utf8Str(mSSData->mStateFilePath).c_str());
9486	mSSData->mStateFilePath.setNull();
9487	aTask.modifyLastState (MachineState_PoweredOff);
9488	rc = saveStateSettings (SaveSTS_StateFilePath);
9489	CheckComRCThrowRC(rc);
9490	}
9491
9492	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
9493	{
9494	/* the "discard current snapshot and state" task is in action, the
9495	* current snapshot is not the last one. Discard the current
9496	* snapshot first */
9497
9498	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
9499	subTask.subTask = true;
9500	discardSnapshotHandler (subTask);
9501
9502	AutoCaller progressCaller (aTask.progress);
9503	AutoReadLock progressLock (aTask.progress);
9504	if (aTask.progress->completed())
9505	{
9506	/* the progress can be completed by a subtask only if there was
9507	* a failure */
9508	rc = aTask.progress->resultCode();
9509	Assert (FAILED(rc));
9510	errorInSubtask = true;
9511	throw rc;
9512	}
9513	}
9514
9515	RTTIMESPEC snapshotTimeStamp;
9516	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
9517
9518	{
9519	ComObjPtr<Snapshot> curSnapshot = mData->mCurrentSnapshot;
9520	AutoReadLock snapshotLock (curSnapshot);
9521
9522	/* remember the timestamp of the snapshot we're restoring from */
9523	snapshotTimeStamp = curSnapshot->getTimeStamp();
9524
9525	ComPtr<SnapshotMachine> pSnapshotMachine(curSnapshot->getSnapshotMachine());
9526
9527	/* copy all hardware data from the current snapshot */
9528	copyFrom(pSnapshotMachine);
9529
9530	LogFlowThisFunc(("Restoring hard disks from the snapshot...\n"));
9531
9532	/* restore the attachmends from the snapshot */
9533	mHDData.backup();
9534	mHDData->mAttachments =
9535	pSnapshotMachine->mHDData->mAttachments;
9536
9537	/* leave the locks before the potentially lengthy operation */
9538	snapshotLock.unlock();
9539	alock.leave();
9540
9541	rc = createImplicitDiffs(mUserData->mSnapshotFolderFull,
9542	aTask.progress,
9543	false /* aOnline */);
9544
9545	alock.enter();
9546	snapshotLock.lock();
9547
9548	CheckComRCThrowRC(rc);
9549
9550	/* Note: on success, current (old) hard disks will be
9551	* deassociated/deleted on #commit() called from #saveSettings() at
9552	* the end. On failure, newly created implicit diffs will be
9553	* deleted by #rollback() at the end. */
9554
9555	/* should not have a saved state file associated at this point */
9556	Assert (mSSData->mStateFilePath.isNull());
9557
9558	if (curSnapshot->stateFilePath())
9559	{
9560	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
9561
9562	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
9563	mUserData->mSnapshotFolderFull.raw(),
9564	RTPATH_DELIMITER, mData->mUuid.raw());
9565
9566	LogFlowThisFunc(("Copying saved state file from '%s' to '%s'...\n",
9567	snapStateFilePath.raw(), stateFilePath.raw()));
9568
9569	aTask.progress->setNextOperation(Bstr(tr("Restoring the execution state")),
9570	1); // weight
9571
9572	/* leave the lock before the potentially lengthy operation */
9573	snapshotLock.unlock();
9574	alock.leave();
9575
9576	/* copy the state file */
9577	int vrc = RTFileCopyEx(snapStateFilePath.c_str(),
9578	stateFilePath.c_str(),
9579	0,
9580	progressCallback,
9581	aTask.progress);
9582
9583	alock.enter();
9584	snapshotLock.lock();
9585
9586	if (RT_SUCCESS(vrc))
9587	{
9588	mSSData->mStateFilePath = stateFilePath;
9589	}
9590	else
9591	{
9592	throw setError(E_FAIL,
9593	tr("Could not copy the state file '%s' to '%s' (%Rrc)"),
9594	snapStateFilePath.raw(),
9595	stateFilePath.raw(),
9596	vrc);
9597	}
9598	}
9599	}
9600
9601	/* grab differencing hard disks from the old attachments that will
9602	* become unused and need to be auto-deleted */
9603
9604	std::list< ComObjPtr<HardDisk> > diffs;
9605
9606	for (HDData::AttachmentList::const_iterator
9607	it = mHDData.backedUpData()->mAttachments.begin();
9608	it != mHDData.backedUpData()->mAttachments.end(); ++ it)
9609	{
9610	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
9611
9612	/* while the hard disk is attached, the number of children or the
9613	* parent cannot change, so no lock */
9614	if (!hd->parent().isNull() && hd->children().size() == 0)
9615	diffs.push_back (hd);
9616	}
9617
9618	int saveFlags = 0;
9619
9620	if (aTask.discardCurrentSnapshot && isLastSnapshot)
9621	{
9622	/* commit changes to have unused diffs deassociated from this
9623	* machine before deletion (see below) */
9624	commit();
9625
9626	/* delete the unused diffs now (and uninit them) because discard
9627	* may fail otherwise (too many children of the hard disk to be
9628	* discarded) */
9629	for (std::list< ComObjPtr<HardDisk> >::const_iterator
9630	it = diffs.begin(); it != diffs.end(); ++ it)
9631	{
9632	/// @todo for now, we ignore errors since we've already
9633	/// and therefore cannot fail. Later, we may want to report a
9634	/// warning through the Progress object
9635	HRESULT rc2 = (*it)->deleteStorageAndWait();
9636	if (SUCCEEDED(rc2))
9637	(*it)->uninit();
9638	}
9639
9640	/* prevent further deletion */
9641	diffs.clear();
9642
9643	/* discard the current snapshot and state task is in action, the
9644	* current snapshot is the last one. Discard the current snapshot
9645	* after discarding the current state. */
9646
9647	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
9648	subTask.subTask = true;
9649	discardSnapshotHandler (subTask);
9650
9651	AutoCaller progressCaller (aTask.progress);
9652	AutoReadLock progressLock (aTask.progress);
9653	if (aTask.progress->completed())
9654	{
9655	/* the progress can be completed by a subtask only if there
9656	* was a failure */
9657	rc = aTask.progress->resultCode();
9658	Assert (FAILED(rc));
9659	errorInSubtask = true;
9660	}
9661
9662	/* we've committed already, so inform callbacks anyway to ensure
9663	* they don't miss some change */
9664	/// @todo NEWMEDIA check if we need this informCallbacks at all
9665	/// after updating discardCurrentSnapshot functionality
9666	saveFlags \|= SaveS_InformCallbacksAnyway;
9667	}
9668
9669	/* @todo saveSettings() below needs a VirtualBox write lock and we need
9670	* to leave this object's lock to do this to follow the {parent-child}
9671	* locking rule. This is the last chance to do that while we are still
9672	* in a protective state which allows us to temporarily leave the lock*/
9673	alock.unlock();
9674	vboxLock.lock();
9675	alock.lock();
9676
9677	/* we have already discarded the current state, so set the execution
9678	* state accordingly no matter of the discard snapshot result */
9679	if (mSSData->mStateFilePath)
9680	setMachineState (MachineState_Saved);
9681	else
9682	setMachineState (MachineState_PoweredOff);
9683
9684	updateMachineStateOnClient();
9685	stateRestored = true;
9686
9687	/* assign the timestamp from the snapshot */
9688	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
9689	mData->mLastStateChange = snapshotTimeStamp;
9690
9691	/* save all settings, reset the modified flag and commit. Note that we
9692	* do so even if the subtask failed (errorInSubtask=true) because we've
9693	* already committed machine data and deleted old diffs before
9694	* discarding the current snapshot so there is no way to rollback */
9695	HRESULT rc2 = saveSettings(SaveS_ResetCurStateModified \| saveFlags);
9696
9697	/// @todo NEWMEDIA return multiple errors
9698	if (errorInSubtask)
9699	throw rc;
9700
9701	rc = rc2;
9702
9703	if (SUCCEEDED(rc))
9704	{
9705	/* now, delete the unused diffs (only on success!) and uninit them*/
9706	for (std::list< ComObjPtr<HardDisk> >::const_iterator
9707	it = diffs.begin(); it != diffs.end(); ++ it)
9708	{
9709	/// @todo for now, we ignore errors since we've already
9710	/// discarded and therefore cannot fail. Later, we may want to
9711	/// report a warning through the Progress object
9712	HRESULT rc2 = (*it)->deleteStorageAndWait();
9713	if (SUCCEEDED(rc2))
9714	(*it)->uninit();
9715	}
9716	}
9717	}
9718	catch (HRESULT aRC) { rc = aRC; }
9719
9720	if (FAILED (rc))
9721	{
9722	/* preserve existing error info */
9723	ErrorInfoKeeper eik;
9724
9725	if (!errorInSubtask)
9726	{
9727	/* undo all changes on failure unless the subtask has done so */
9728	rollback (false /* aNotify */);
9729	}
9730
9731	if (!stateRestored)
9732	{
9733	/* restore the machine state */
9734	setMachineState (aTask.state);
9735	updateMachineStateOnClient();
9736	}
9737	}
9738
9739	if (!errorInSubtask)
9740	{
9741	/* set the result (this will try to fetch current error info on failure) */
9742	aTask.progress->notifyComplete (rc);
9743	}
9744
9745	if (SUCCEEDED(rc))
9746	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
9747
9748	LogFlowThisFunc(("Done discarding current state (rc=%08X)\n", rc));
9749
9750	LogFlowThisFuncLeave();
9751	}
9752
9753	/**
9754	* Locks the attached media.
9755	*
9756	* All attached hard disks are locked for writing and DVD/floppy are locked for
9757	* reading. Parents of attached hard disks (if any) are locked for reading.
9758	*
9759	* This method also performs accessibility check of all media it locks: if some
9760	* media is inaccessible, the method will return a failure and a bunch of
9761	* extended error info objects per each inaccessible medium.
9762	*
9763	* Note that this method is atomic: if it returns a success, all media are
9764	* locked as described above; on failure no media is locked at all (all
9765	* succeeded individual locks will be undone).
9766	*
9767	* This method is intended to be called when the machine is in Starting or
9768	* Restoring state and asserts otherwise.
9769	*
9770	* The locks made by this method must be undone by calling #unlockMedia() when
9771	* no more needed.
9772	*/
9773	HRESULT SessionMachine::lockMedia()
9774	{
9775	AutoCaller autoCaller(this);
9776	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9777
9778	AutoWriteLock alock(this);
9779
9780	AssertReturn(mData->mMachineState == MachineState_Starting \|\|
9781	mData->mMachineState == MachineState_Restoring, E_FAIL);
9782
9783	typedef std::list <ComPtr<IMedium> > MediaList;
9784	MediaList mediaToCheck;
9785	MediaState_T mediaState;
9786
9787	try
9788	{
9789	HRESULT rc = S_OK;
9790
9791	/* lock hard disks */
9792	for (HDData::AttachmentList::const_iterator it =
9793	mHDData->mAttachments.begin();
9794	it != mHDData->mAttachments.end(); ++ it)
9795	{
9796	ComObjPtr<HardDisk> hd = (*it)->hardDisk();
9797
9798	bool first = true;
9799
9800	/** @todo split out the media locking, and put it into
9801	* HardDiskImpl.cpp, as it needs this functionality too. */
9802	while (!hd.isNull())
9803	{
9804	if (first)
9805	{
9806	rc = hd->LockWrite (&mediaState);
9807	CheckComRCThrowRC(rc);
9808
9809	mData->mSession.mLockedMedia.push_back (
9810	Data::Session::LockedMedia::value_type (
9811	ComPtr<IHardDisk> (hd), true));
9812
9813	first = false;
9814	}
9815	else
9816	{
9817	rc = hd->LockRead (&mediaState);
9818	CheckComRCThrowRC(rc);
9819
9820	mData->mSession.mLockedMedia.push_back (
9821	Data::Session::LockedMedia::value_type (
9822	ComPtr<IHardDisk> (hd), false));
9823	}
9824
9825	if (mediaState == MediaState_Inaccessible)
9826	mediaToCheck.push_back (ComPtr<IHardDisk> (hd));
9827
9828	/* no locks or callers here since there should be no way to
9829	* change the hard disk parent at this point (as it is still
9830	* attached to the machine) */
9831	hd = hd->parent();
9832	}
9833	}
9834
9835	/* lock the DVD image for reading if mounted */
9836	{
9837	AutoReadLock driveLock (mDVDDrive);
9838	if (mDVDDrive->data()->state == DriveState_ImageMounted)
9839	{
9840	ComObjPtr<DVDImage> image = mDVDDrive->data()->image;
9841
9842	rc = image->LockRead (&mediaState);
9843	CheckComRCThrowRC (rc);
9844
9845	mData->mSession.mLockedMedia.push_back (
9846	Data::Session::LockedMedia::value_type (
9847	ComPtr<IDVDImage> (image), false));
9848
9849	if (mediaState == MediaState_Inaccessible)
9850	mediaToCheck.push_back (ComPtr<IDVDImage> (image));
9851	}
9852	}
9853
9854	/* lock the floppy image for reading if mounted */
9855	{
9856	AutoReadLock driveLock (mFloppyDrive);
9857	if (mFloppyDrive->data()->state == DriveState_ImageMounted)
9858	{
9859	ComObjPtr<FloppyImage> image = mFloppyDrive->data()->image;
9860
9861	rc = image->LockRead (&mediaState);
9862	CheckComRCThrowRC (rc);
9863
9864	mData->mSession.mLockedMedia.push_back (
9865	Data::Session::LockedMedia::value_type (
9866	ComPtr<IFloppyImage> (image), false));
9867
9868	if (mediaState == MediaState_Inaccessible)
9869	mediaToCheck.push_back (ComPtr<IFloppyImage> (image));
9870	}
9871	}
9872
9873	/* SUCCEEDED locking all media, now check accessibility */
9874
9875	ErrorInfoKeeper eik (true /* aIsNull */);
9876	MultiResult mrc (S_OK);
9877
9878	/* perform a check of inaccessible media deferred above */
9879	for (MediaList::const_iterator
9880	it = mediaToCheck.begin();
9881	it != mediaToCheck.end(); ++ it)
9882	{
9883	MediaState_T mediaState;
9884	rc = (*it)->COMGETTER(State) (&mediaState);
9885	CheckComRCThrowRC(rc);
9886
9887	Assert (mediaState == MediaState_LockedRead \|\|
9888	mediaState == MediaState_LockedWrite);
9889
9890	/* Note that we locked the medium already, so use the error
9891	* value to see if there was an accessibility failure */
9892
9893	Bstr error;
9894	rc = (*it)->COMGETTER(LastAccessError) (error.asOutParam());
9895	CheckComRCThrowRC(rc);
9896
9897	if (!error.isEmpty())
9898	{
9899	Bstr loc;
9900	rc = (*it)->COMGETTER(Location) (loc.asOutParam());
9901	CheckComRCThrowRC(rc);
9902
9903	/* collect multiple errors */
9904	eik.restore();
9905
9906	/* be in sync with MediumBase::setStateError() */
9907	Assert (!error.isEmpty());
9908	mrc = setError(E_FAIL,
9909	tr("Medium '%ls' is not accessible. %ls"),
9910	loc.raw(),
9911	error.raw());
9912
9913	eik.fetch();
9914	}
9915	}
9916
9917	eik.restore();
9918	CheckComRCThrowRC((HRESULT) mrc);
9919	}
9920	catch (HRESULT aRC)
9921	{
9922	/* Unlock all locked media on failure */
9923	unlockMedia();
9924	return aRC;
9925	}
9926
9927	return S_OK;
9928	}
9929
9930	/**
9931	* Undoes the locks made by by #lockMedia().
9932	*/
9933	void SessionMachine::unlockMedia()
9934	{
9935	AutoCaller autoCaller(this);
9936	AssertComRCReturnVoid (autoCaller.rc());
9937
9938	AutoWriteLock alock(this);
9939
9940	/* we may be holding important error info on the current thread;
9941	* preserve it */
9942	ErrorInfoKeeper eik;
9943
9944	HRESULT rc = S_OK;
9945
9946	for (Data::Session::LockedMedia::const_iterator
9947	it = mData->mSession.mLockedMedia.begin();
9948	it != mData->mSession.mLockedMedia.end(); ++ it)
9949	{
9950	MediaState_T state;
9951	if (it->second)
9952	rc = it->first->UnlockWrite (&state);
9953	else
9954	rc = it->first->UnlockRead (&state);
9955
9956	/* The second can happen if an object was re-locked in
9957	* Machine::fixupHardDisks(). The last can happen when e.g a DVD/Floppy
9958	* image was unmounted at runtime. */
9959	Assert (SUCCEEDED(rc) \|\| state == MediaState_LockedRead \|\| state == MediaState_Created);
9960	}
9961
9962	mData->mSession.mLockedMedia.clear();
9963	}
9964
9965	/**
9966	* Helper to change the machine state (reimplementation).
9967	*
9968	* @note Locks this object for writing.
9969	*/
9970	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
9971	{
9972	LogFlowThisFuncEnter();
9973	LogFlowThisFunc(("aMachineState=%d\n", aMachineState));
9974
9975	AutoCaller autoCaller(this);
9976	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9977
9978	AutoWriteLock alock(this);
9979
9980	MachineState_T oldMachineState = mData->mMachineState;
9981
9982	AssertMsgReturn (oldMachineState != aMachineState,
9983	("oldMachineState=%d, aMachineState=%d\n",
9984	oldMachineState, aMachineState), E_FAIL);
9985
9986	HRESULT rc = S_OK;
9987
9988	int stsFlags = 0;
9989	bool deleteSavedState = false;
9990
9991	/* detect some state transitions */
9992
9993	if ((oldMachineState == MachineState_Saved &&
9994	aMachineState == MachineState_Restoring) \|\|
9995	(oldMachineState < MachineState_Running /* any other OFF state */ &&
9996	aMachineState == MachineState_Starting))
9997	{
9998	/* The EMT thread is about to start */
9999
10000	/* Nothing to do here for now... */
10001
10002	/// @todo NEWMEDIA don't let mDVDDrive and other children
10003	/// change anything when in the Starting/Restoring state
10004	}
10005	else
10006	if (oldMachineState >= MachineState_Running &&
10007	oldMachineState != MachineState_Discarding &&
10008	oldMachineState != MachineState_SettingUp &&
10009	aMachineState < MachineState_Running &&
10010	/* ignore PoweredOff->Saving->PoweredOff transition when taking a
10011	* snapshot */
10012	(mSnapshotData.mSnapshot.isNull() \|\|
10013	mSnapshotData.mLastState >= MachineState_Running))
10014	{
10015	/* The EMT thread has just stopped, unlock attached media. Note that as
10016	* opposed to locking that is done from Console, we do unlocking here
10017	* because the VM process may have aborted before having a chance to
10018	* properly unlock all media it locked. */
10019
10020	unlockMedia();
10021	}
10022
10023	if (oldMachineState == MachineState_Restoring)
10024	{
10025	if (aMachineState != MachineState_Saved)
10026	{
10027	/*
10028	* delete the saved state file once the machine has finished
10029	* restoring from it (note that Console sets the state from
10030	* Restoring to Saved if the VM couldn't restore successfully,
10031	* to give the user an ability to fix an error and retry --
10032	* we keep the saved state file in this case)
10033	*/
10034	deleteSavedState = true;
10035	}
10036	}
10037	else
10038	if (oldMachineState == MachineState_Saved &&
10039	(aMachineState == MachineState_PoweredOff \|\|
10040	aMachineState == MachineState_Aborted))
10041	{
10042	/*
10043	* delete the saved state after Console::DiscardSavedState() is called
10044	* or if the VM process (owning a direct VM session) crashed while the
10045	* VM was Saved
10046	*/
10047
10048	/// @todo (dmik)
10049	// Not sure that deleting the saved state file just because of the
10050	// client death before it attempted to restore the VM is a good
10051	// thing. But when it crashes we need to go to the Aborted state
10052	// which cannot have the saved state file associated... The only
10053	// way to fix this is to make the Aborted condition not a VM state
10054	// but a bool flag: i.e., when a crash occurs, set it to true and
10055	// change the state to PoweredOff or Saved depending on the
10056	// saved state presence.
10057
10058	deleteSavedState = true;
10059	mData->mCurrentStateModified = TRUE;
10060	stsFlags \|= SaveSTS_CurStateModified;
10061	}
10062
10063	if (aMachineState == MachineState_Starting \|\|
10064	aMachineState == MachineState_Restoring)
10065	{
10066	/* set the current state modified flag to indicate that the current
10067	* state is no more identical to the state in the
10068	* current snapshot */
10069	if (!mData->mCurrentSnapshot.isNull())
10070	{
10071	mData->mCurrentStateModified = TRUE;
10072	stsFlags \|= SaveSTS_CurStateModified;
10073	}
10074	}
10075
10076	if (deleteSavedState)
10077	{
10078	if (mRemoveSavedState)
10079	{
10080	Assert (!mSSData->mStateFilePath.isEmpty());
10081	RTFileDelete(Utf8Str(mSSData->mStateFilePath).c_str());
10082	}
10083	mSSData->mStateFilePath.setNull();
10084	stsFlags \|= SaveSTS_StateFilePath;
10085	}
10086
10087	/* redirect to the underlying peer machine */
10088	mPeer->setMachineState (aMachineState);
10089
10090	if (aMachineState == MachineState_PoweredOff \|\|
10091	aMachineState == MachineState_Aborted \|\|
10092	aMachineState == MachineState_Saved)
10093	{
10094	/* the machine has stopped execution
10095	* (or the saved state file was adopted) */
10096	stsFlags \|= SaveSTS_StateTimeStamp;
10097	}
10098
10099	if ((oldMachineState == MachineState_PoweredOff \|\|
10100	oldMachineState == MachineState_Aborted) &&
10101	aMachineState == MachineState_Saved)
10102	{
10103	/* the saved state file was adopted */
10104	Assert (!mSSData->mStateFilePath.isNull());
10105	stsFlags \|= SaveSTS_StateFilePath;
10106	}
10107
10108	rc = saveStateSettings (stsFlags);
10109
10110	if ((oldMachineState != MachineState_PoweredOff &&
10111	oldMachineState != MachineState_Aborted) &&
10112	(aMachineState == MachineState_PoweredOff \|\|
10113	aMachineState == MachineState_Aborted))
10114	{
10115	/* we've been shut down for any reason */
10116	/* no special action so far */
10117	}
10118
10119	LogFlowThisFunc(("rc=%08X\n", rc));
10120	LogFlowThisFuncLeave();
10121	return rc;
10122	}
10123
10124	/**
10125	* Sends the current machine state value to the VM process.
10126	*
10127	* @note Locks this object for reading, then calls a client process.
10128	*/
10129	HRESULT SessionMachine::updateMachineStateOnClient()
10130	{
10131	AutoCaller autoCaller(this);
10132	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10133
10134	ComPtr<IInternalSessionControl> directControl;
10135	{
10136	AutoReadLock alock(this);
10137	AssertReturn(!!mData, E_FAIL);
10138	directControl = mData->mSession.mDirectControl;
10139
10140	/* directControl may be already set to NULL here in #OnSessionEnd()
10141	* called too early by the direct session process while there is still
10142	* some operation (like discarding the snapshot) in progress. The client
10143	* process in this case is waiting inside Session::close() for the
10144	* "end session" process object to complete, while #uninit() called by
10145	* #checkForDeath() on the Watcher thread is waiting for the pending
10146	* operation to complete. For now, we accept this inconsitent behavior
10147	* and simply do nothing here. */
10148
10149	if (mData->mSession.mState == SessionState_Closing)
10150	return S_OK;
10151
10152	AssertReturn(!directControl.isNull(), E_FAIL);
10153	}
10154
10155	return directControl->UpdateMachineState (mData->mMachineState);
10156	}
10157
10158	/* static */
10159	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD /* thread /, void pvUser)
10160	{
10161	AssertReturn(pvUser, VERR_INVALID_POINTER);
10162
10163	Task task = static_cast <Task > (pvUser);
10164	task->handler();
10165
10166	// it's our responsibility to delete the task
10167	delete task;
10168
10169	return 0;
10170	}
10171
10172	/////////////////////////////////////////////////////////////////////////////
10173	// SnapshotMachine class
10174	/////////////////////////////////////////////////////////////////////////////
10175
10176	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
10177
10178	HRESULT SnapshotMachine::FinalConstruct()
10179	{
10180	LogFlowThisFunc(("\n"));
10181
10182	/* set the proper type to indicate we're the SnapshotMachine instance */
10183	unconst(mType) = IsSnapshotMachine;
10184
10185	return S_OK;
10186	}
10187
10188	void SnapshotMachine::FinalRelease()
10189	{
10190	LogFlowThisFunc(("\n"));
10191
10192	uninit();
10193	}
10194
10195	/**
10196	* Initializes the SnapshotMachine object when taking a snapshot.
10197	*
10198	* @param aSessionMachine machine to take a snapshot from
10199	* @param aSnapshotId snapshot ID of this snapshot machine
10200	* @param aStateFilePath file where the execution state will be later saved
10201	* (or NULL for the offline snapshot)
10202	*
10203	* @note The aSessionMachine must be locked for writing.
10204	*/
10205	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
10206	IN_GUID aSnapshotId,
10207	const Utf8Str &aStateFilePath)
10208	{
10209	LogFlowThisFuncEnter();
10210	LogFlowThisFunc(("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
10211
10212	AssertReturn(aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
10213
10214	/* Enclose the state transition NotReady->InInit->Ready */
10215	AutoInitSpan autoInitSpan(this);
10216	AssertReturn(autoInitSpan.isOk(), E_FAIL);
10217
10218	AssertReturn(aSessionMachine->isWriteLockOnCurrentThread(), E_FAIL);
10219
10220	mSnapshotId = aSnapshotId;
10221
10222	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
10223	unconst(mPeer) = aSessionMachine->mPeer;
10224	/* share the parent pointer */
10225	unconst(mParent) = mPeer->mParent;
10226
10227	/* take the pointer to Data to share */
10228	mData.share (mPeer->mData);
10229
10230	/* take the pointer to UserData to share (our UserData must always be the
10231	* same as Machine's data) */
10232	mUserData.share (mPeer->mUserData);
10233	/* make a private copy of all other data (recent changes from SessionMachine) */
10234	mHWData.attachCopy (aSessionMachine->mHWData);
10235	mHDData.attachCopy (aSessionMachine->mHDData);
10236
10237	/* SSData is always unique for SnapshotMachine */
10238	mSSData.allocate();
10239	mSSData->mStateFilePath = aStateFilePath;
10240
10241	HRESULT rc = S_OK;
10242
10243	/* create copies of all shared folders (mHWData after attiching a copy
10244	* contains just references to original objects) */
10245	for (HWData::SharedFolderList::iterator
10246	it = mHWData->mSharedFolders.begin();
10247	it != mHWData->mSharedFolders.end();
10248	++ it)
10249	{
10250	ComObjPtr<SharedFolder> folder;
10251	folder.createObject();
10252	rc = folder->initCopy (this, *it);
10253	CheckComRCReturnRC(rc);
10254	*it = folder;
10255	}
10256
10257	/* associate hard disks with the snapshot
10258	* (Machine::uninitDataAndChildObjects() will deassociate at destruction) */
10259	for (HDData::AttachmentList::const_iterator
10260	it = mHDData->mAttachments.begin();
10261	it != mHDData->mAttachments.end();
10262	++ it)
10263	{
10264	rc = (*it)->hardDisk()->attachTo (mData->mUuid, mSnapshotId);
10265	AssertComRC(rc);
10266	}
10267
10268	/* create copies of all storage controllers (mStorageControllerData
10269	* after attaching a copy contains just references to original objects) */
10270	mStorageControllers.allocate();
10271	for (StorageControllerList::const_iterator
10272	it = aSessionMachine->mStorageControllers->begin();
10273	it != aSessionMachine->mStorageControllers->end();
10274	++ it)
10275	{
10276	ComObjPtr<StorageController> ctrl;
10277	ctrl.createObject();
10278	ctrl->initCopy (this, *it);
10279	mStorageControllers->push_back(ctrl);
10280	}
10281
10282	/* create all other child objects that will be immutable private copies */
10283
10284	unconst(mBIOSSettings).createObject();
10285	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
10286
10287	#ifdef VBOX_WITH_VRDP
10288	unconst(mVRDPServer).createObject();
10289	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
10290	#endif
10291
10292	unconst(mDVDDrive).createObject();
10293	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
10294
10295	unconst(mFloppyDrive).createObject();
10296	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
10297
10298	unconst(mAudioAdapter).createObject();
10299	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
10300
10301	unconst(mUSBController).createObject();
10302	mUSBController->initCopy (this, mPeer->mUSBController);
10303
10304	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
10305	{
10306	unconst(mNetworkAdapters [slot]).createObject();
10307	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
10308	}
10309
10310	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
10311	{
10312	unconst(mSerialPorts [slot]).createObject();
10313	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
10314	}
10315
10316	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
10317	{
10318	unconst(mParallelPorts [slot]).createObject();
10319	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
10320	}
10321
10322	/* Confirm a successful initialization when it's the case */
10323	autoInitSpan.setSucceeded();
10324
10325	LogFlowThisFuncLeave();
10326	return S_OK;
10327	}
10328
10329	/**
10330	* Initializes the SnapshotMachine object when loading from the settings file.
10331	*
10332	* @param aMachine machine the snapshot belngs to
10333	* @param aHWNode <Hardware> node
10334	* @param aHDAsNode <HardDiskAttachments> node
10335	* @param aSnapshotId snapshot ID of this snapshot machine
10336	* @param aStateFilePath file where the execution state is saved
10337	* (or NULL for the offline snapshot)
10338	*
10339	* @note Doesn't lock anything.
10340	*/
10341	HRESULT SnapshotMachine::init(Machine *aMachine,
10342	const settings::Hardware &hardware,
10343	const settings::Storage &storage,
10344	IN_GUID aSnapshotId,
10345	const Utf8Str &aStateFilePath)
10346	{
10347	LogFlowThisFuncEnter();
10348	LogFlowThisFunc(("mName={%ls}\n", aMachine->mUserData->mName.raw()));
10349
10350	AssertReturn(aMachine && !Guid(aSnapshotId).isEmpty(), E_INVALIDARG);
10351
10352	/* Enclose the state transition NotReady->InInit->Ready */
10353	AutoInitSpan autoInitSpan(this);
10354	AssertReturn(autoInitSpan.isOk(), E_FAIL);
10355
10356	/* Don't need to lock aMachine when VirtualBox is starting up */
10357
10358	mSnapshotId = aSnapshotId;
10359
10360	/* memorize the primary Machine instance */
10361	unconst(mPeer) = aMachine;
10362	/* share the parent pointer */
10363	unconst(mParent) = mPeer->mParent;
10364
10365	/* take the pointer to Data to share */
10366	mData.share (mPeer->mData);
10367	/*
10368	* take the pointer to UserData to share
10369	* (our UserData must always be the same as Machine's data)
10370	*/
10371	mUserData.share (mPeer->mUserData);
10372	/* allocate private copies of all other data (will be loaded from settings) */
10373	mHWData.allocate();
10374	mHDData.allocate();
10375	mStorageControllers.allocate();
10376
10377	/* SSData is always unique for SnapshotMachine */
10378	mSSData.allocate();
10379	mSSData->mStateFilePath = aStateFilePath;
10380
10381	/* create all other child objects that will be immutable private copies */
10382
10383	unconst(mBIOSSettings).createObject();
10384	mBIOSSettings->init (this);
10385
10386	#ifdef VBOX_WITH_VRDP
10387	unconst(mVRDPServer).createObject();
10388	mVRDPServer->init (this);
10389	#endif
10390
10391	unconst(mDVDDrive).createObject();
10392	mDVDDrive->init (this);
10393
10394	unconst(mFloppyDrive).createObject();
10395	mFloppyDrive->init (this);
10396
10397	unconst(mAudioAdapter).createObject();
10398	mAudioAdapter->init (this);
10399
10400	unconst(mUSBController).createObject();
10401	mUSBController->init (this);
10402
10403	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
10404	{
10405	unconst(mNetworkAdapters [slot]).createObject();
10406	mNetworkAdapters [slot]->init (this, slot);
10407	}
10408
10409	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
10410	{
10411	unconst(mSerialPorts [slot]).createObject();
10412	mSerialPorts [slot]->init (this, slot);
10413	}
10414
10415	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
10416	{
10417	unconst(mParallelPorts [slot]).createObject();
10418	mParallelPorts [slot]->init (this, slot);
10419	}
10420
10421	/* load hardware and harddisk settings */
10422
10423	HRESULT rc = loadHardware(hardware);
10424	if (SUCCEEDED(rc))
10425	rc = loadStorageControllers(storage, true /* aRegistered */, &mSnapshotId);
10426
10427	if (SUCCEEDED(rc))
10428	/* commit all changes made during the initialization */
10429	commit();
10430
10431	/* Confirm a successful initialization when it's the case */
10432	if (SUCCEEDED(rc))
10433	autoInitSpan.setSucceeded();
10434
10435	LogFlowThisFuncLeave();
10436	return rc;
10437	}
10438
10439	/**
10440	* Uninitializes this SnapshotMachine object.
10441	*/
10442	void SnapshotMachine::uninit()
10443	{
10444	LogFlowThisFuncEnter();
10445
10446	/* Enclose the state transition Ready->InUninit->NotReady */
10447	AutoUninitSpan autoUninitSpan(this);
10448	if (autoUninitSpan.uninitDone())
10449	return;
10450
10451	uninitDataAndChildObjects();
10452
10453	/* free the essential data structure last */
10454	mData.free();
10455
10456	unconst(mParent).setNull();
10457	unconst(mPeer).setNull();
10458
10459	LogFlowThisFuncLeave();
10460	}
10461
10462	// util::Lockable interface
10463	////////////////////////////////////////////////////////////////////////////////
10464
10465	/**
10466	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
10467	* with the primary Machine instance (mPeer).
10468	*/
10469	RWLockHandle *SnapshotMachine::lockHandle() const
10470	{
10471	AssertReturn(!mPeer.isNull(), NULL);
10472	return mPeer->lockHandle();
10473	}
10474
10475	// public methods only for internal purposes
10476	////////////////////////////////////////////////////////////////////////////////
10477
10478	/**
10479	* Called by the snapshot object associated with this SnapshotMachine when
10480	* snapshot data such as name or description is changed.
10481	*
10482	* @note Locks this object for writing.
10483	*/
10484	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
10485	{
10486	AutoWriteLock alock(this);
10487
10488	// mPeer->saveAllSnapshots(); @todo
10489
10490	/* inform callbacks */
10491	mParent->onSnapshotChange(mData->mUuid, aSnapshot->getId());
10492
10493	return S_OK;
10494	}
10495	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 22443

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