MachineImpl.cpp@ 16774

Last change on this file since 16774 was 16560, checked in by vboxsync, 16 years ago
Main: do not include include/VBox/settings.h from other header files but only from implementations that need it (save compile time)
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File size: 346.6 KB

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1	/* $Id: MachineImpl.cpp 16560 2009-02-06 18:06:04Z vboxsync $ */
2
3	/** @file
4	* Implementation of IMachine in VBoxSVC.
5	*/
6
7	/*
8	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*
18	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
19	* Clara, CA 95054 USA or visit http://www.sun.com if you need
20	* additional information or have any questions.
21	*/
22
23	/* Make sure all the stdint.h macros are included - must come first! */
24	#ifndef __STDC_LIMIT_MACROS
25	# define __STDC_LIMIT_MACROS
26	#endif
27	#ifndef __STDC_CONSTANT_MACROS
28	# define __STDC_CONSTANT_MACROS
29	#endif
30
31	#ifdef VBOX_WITH_SYS_V_IPC_SESSION_WATCHER
32	# include <errno.h>
33	# include <sys/types.h>
34	# include <sys/stat.h>
35	# include <sys/ipc.h>
36	# include <sys/sem.h>
37	#endif
38
39	#include "VirtualBoxImpl.h"
40	#include "MachineImpl.h"
41	#include "ProgressImpl.h"
42	#include "HardDiskAttachmentImpl.h"
43	#include "USBControllerImpl.h"
44	#include "HostImpl.h"
45	#include "SystemPropertiesImpl.h"
46	#include "SharedFolderImpl.h"
47	#include "GuestOSTypeImpl.h"
48	#include "VirtualBoxErrorInfoImpl.h"
49	#include "GuestImpl.h"
50	#include "SATAControllerImpl.h"
51
52	#ifdef VBOX_WITH_USB
53	# include "USBProxyService.h"
54	#endif
55
56	#include "VirtualBoxXMLUtil.h"
57
58	#include "Logging.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	* @note The template is NOT completely valid according to VBOX_XML_SCHEMA
100	* (when loading a newly created settings file, validation will be turned off)
101	*/
102	static const char gDefaultMachineConfig[] =
103	{
104	"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" RTFILE_LINEFEED
105	"<!-- Sun xVM VirtualBox Machine Configuration -->" RTFILE_LINEFEED
106	"<VirtualBox xmlns=\"" VBOX_XML_NAMESPACE "\" "
107	"version=\"" VBOX_XML_VERSION_FULL "\">" RTFILE_LINEFEED
108	"</VirtualBox>" RTFILE_LINEFEED
109	};
110
111	/**
112	* Progress callback handler for lengthy operations
113	* (corresponds to the FNRTPROGRESS typedef).
114	*
115	* @param uPercentage Completetion precentage (0-100).
116	* @param pvUser Pointer to the Progress instance.
117	*/
118	static DECLCALLBACK(int) progressCallback (unsigned uPercentage, void *pvUser)
119	{
120	Progress progress = static_cast <Progress > (pvUser);
121
122	/* update the progress object */
123	if (progress)
124	progress->notifyProgress (uPercentage);
125
126	return VINF_SUCCESS;
127	}
128
129	/////////////////////////////////////////////////////////////////////////////
130	// Machine::Data structure
131	/////////////////////////////////////////////////////////////////////////////
132
133	Machine::Data::Data()
134	{
135	mRegistered = FALSE;
136	mAccessible = FALSE;
137	/* mUuid is initialized in Machine::init() */
138
139	mMachineState = MachineState_PoweredOff;
140	RTTimeNow (&mLastStateChange);
141
142	mMachineStateDeps = 0;
143	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
144	mMachineStateChangePending = 0;
145
146	mCurrentStateModified = TRUE;
147	mHandleCfgFile = NIL_RTFILE;
148
149	mSession.mPid = NIL_RTPROCESS;
150	mSession.mState = SessionState_Closed;
151	}
152
153	Machine::Data::~Data()
154	{
155	if (mMachineStateDepsSem != NIL_RTSEMEVENTMULTI)
156	{
157	RTSemEventMultiDestroy (mMachineStateDepsSem);
158	mMachineStateDepsSem = NIL_RTSEMEVENTMULTI;
159	}
160	}
161
162	/////////////////////////////////////////////////////////////////////////////
163	// Machine::UserData structure
164	/////////////////////////////////////////////////////////////////////////////
165
166	Machine::UserData::UserData()
167	{
168	/* default values for a newly created machine */
169
170	mNameSync = TRUE;
171
172	/* mName, mOSTypeId, mSnapshotFolder, mSnapshotFolderFull are initialized in
173	* Machine::init() */
174	}
175
176	Machine::UserData::~UserData()
177	{
178	}
179
180	/////////////////////////////////////////////////////////////////////////////
181	// Machine::HWData structure
182	/////////////////////////////////////////////////////////////////////////////
183
184	Machine::HWData::HWData()
185	{
186	/* default values for a newly created machine */
187	mHWVersion = "2"; /** @todo get the default from the schema if that is possible. */
188	mMemorySize = 128;
189	mCPUCount = 1;
190	mMemoryBalloonSize = 0;
191	mStatisticsUpdateInterval = 0;
192	mVRAMSize = 8;
193	mAccelerate3DEnabled = false;
194	mMonitorCount = 1;
195	mHWVirtExEnabled = TSBool_False;
196	mHWVirtExNestedPagingEnabled = false;
197	mHWVirtExVPIDEnabled = false;
198	mPAEEnabled = false;
199	mPropertyServiceActive = false;
200
201	/* default boot order: floppy - DVD - HDD */
202	mBootOrder [0] = DeviceType_Floppy;
203	mBootOrder [1] = DeviceType_DVD;
204	mBootOrder [2] = DeviceType_HardDisk;
205	for (size_t i = 3; i < RT_ELEMENTS (mBootOrder); i++)
206	mBootOrder [i] = DeviceType_Null;
207
208	mClipboardMode = ClipboardMode_Bidirectional;
209	mGuestPropertyNotificationPatterns = "";
210	}
211
212	Machine::HWData::~HWData()
213	{
214	}
215
216	bool Machine::HWData::operator== (const HWData &that) const
217	{
218	if (this == &that)
219	return true;
220
221	if (mHWVersion != that.mHWVersion \|\|
222	mMemorySize != that.mMemorySize \|\|
223	mMemoryBalloonSize != that.mMemoryBalloonSize \|\|
224	mStatisticsUpdateInterval != that.mStatisticsUpdateInterval \|\|
225	mVRAMSize != that.mVRAMSize \|\|
226	mAccelerate3DEnabled != that.mAccelerate3DEnabled \|\|
227	mMonitorCount != that.mMonitorCount \|\|
228	mHWVirtExEnabled != that.mHWVirtExEnabled \|\|
229	mHWVirtExNestedPagingEnabled != that.mHWVirtExNestedPagingEnabled \|\|
230	mHWVirtExVPIDEnabled != that.mHWVirtExVPIDEnabled \|\|
231	mPAEEnabled != that.mPAEEnabled \|\|
232	mCPUCount != that.mCPUCount \|\|
233	mClipboardMode != that.mClipboardMode)
234	return false;
235
236	for (size_t i = 0; i < RT_ELEMENTS (mBootOrder); ++ i)
237	if (mBootOrder [i] != that.mBootOrder [i])
238	return false;
239
240	if (mSharedFolders.size() != that.mSharedFolders.size())
241	return false;
242
243	if (mSharedFolders.size() == 0)
244	return true;
245
246	/* Make copies to speed up comparison */
247	SharedFolderList folders = mSharedFolders;
248	SharedFolderList thatFolders = that.mSharedFolders;
249
250	SharedFolderList::iterator it = folders.begin();
251	while (it != folders.end())
252	{
253	bool found = false;
254	SharedFolderList::iterator thatIt = thatFolders.begin();
255	while (thatIt != thatFolders.end())
256	{
257	if ((it)->name() == (thatIt)->name() &&
258	RTPathCompare (Utf8Str ((*it)->hostPath()),
259	Utf8Str ((*thatIt)->hostPath())) == 0)
260	{
261	thatFolders.erase (thatIt);
262	found = true;
263	break;
264	}
265	else
266	++ thatIt;
267	}
268	if (found)
269	it = folders.erase (it);
270	else
271	return false;
272	}
273
274	Assert (folders.size() == 0 && thatFolders.size() == 0);
275
276	return true;
277	}
278
279	/////////////////////////////////////////////////////////////////////////////
280	// Machine::HDData structure
281	/////////////////////////////////////////////////////////////////////////////
282
283	Machine::HDData::HDData()
284	{
285	}
286
287	Machine::HDData::~HDData()
288	{
289	}
290
291	bool Machine::HDData::operator== (const HDData &that) const
292	{
293	if (this == &that)
294	return true;
295
296	if (mAttachments.size() != that.mAttachments.size())
297	return false;
298
299	if (mAttachments.size() == 0)
300	return true;
301
302	/* Make copies to speed up comparison */
303	AttachmentList atts = mAttachments;
304	AttachmentList thatAtts = that.mAttachments;
305
306	AttachmentList::iterator it = atts.begin();
307	while (it != atts.end())
308	{
309	bool found = false;
310	AttachmentList::iterator thatIt = thatAtts.begin();
311	while (thatIt != thatAtts.end())
312	{
313	if ((it)->bus() == (thatIt)->bus() &&
314	(it)->channel() == (thatIt)->channel() &&
315	(it)->device() == (thatIt)->device() &&
316	(it)->hardDisk().equalsTo ((thatIt)->hardDisk()))
317	{
318	thatAtts.erase (thatIt);
319	found = true;
320	break;
321	}
322	else
323	++ thatIt;
324	}
325	if (found)
326	it = atts.erase (it);
327	else
328	return false;
329	}
330
331	Assert (atts.size() == 0 && thatAtts.size() == 0);
332
333	return true;
334	}
335
336	/////////////////////////////////////////////////////////////////////////////
337	// Machine class
338	/////////////////////////////////////////////////////////////////////////////
339
340	// constructor / destructor
341	/////////////////////////////////////////////////////////////////////////////
342
343	Machine::Machine() : mType (IsMachine) {}
344
345	Machine::~Machine() {}
346
347	HRESULT Machine::FinalConstruct()
348	{
349	LogFlowThisFunc (("\n"));
350	return S_OK;
351	}
352
353	void Machine::FinalRelease()
354	{
355	LogFlowThisFunc (("\n"));
356	uninit();
357	}
358
359	/**
360	* Initializes the instance.
361	*
362	* @param aParent Associated parent object
363	* @param aConfigFile Local file system path to the VM settings file (can
364	* be relative to the VirtualBox config directory).
365	* @param aMode Init_New, Init_Existing or Init_Registered
366	* @param aName name for the machine when aMode is Init_New
367	* (ignored otherwise)
368	* @param aOsType OS Type of this machine
369	* @param aNameSync \|TRUE\| to automatically sync settings dir and file
370	* name with the machine name. \|FALSE\| is used for legacy
371	* machines where the file name is specified by the
372	* user and should never change. Used only in Init_New
373	* mode (ignored otherwise).
374	* @param aId UUID of the machine. Required for aMode==Init_Registered
375	* and optional for aMode==Init_New. Used for consistency
376	* check when aMode is Init_Registered; must match UUID
377	* stored in the settings file. Used for predefining the
378	* UUID of a VM when aMode is Init_New.
379	*
380	* @return Success indicator. if not S_OK, the machine object is invalid
381	*/
382	HRESULT Machine::init (VirtualBox *aParent, CBSTR aConfigFile,
383	InitMode aMode, CBSTR aName /* = NULL */,
384	GuestOSType aOsType / = NULL */,
385	BOOL aNameSync /* = TRUE */,
386	const Guid aId / = NULL */)
387	{
388	LogFlowThisFuncEnter();
389	LogFlowThisFunc (("aConfigFile='%ls', aMode=%d\n", aConfigFile, aMode));
390
391	AssertReturn (aParent, E_INVALIDARG);
392	AssertReturn (aConfigFile, E_INVALIDARG);
393	AssertReturn (aMode != Init_New \|\| (aName != NULL && *aName != '\0'),
394	E_INVALIDARG);
395	AssertReturn (aMode != Init_Registered \|\| aId != NULL, E_FAIL);
396
397	/* Enclose the state transition NotReady->InInit->Ready */
398	AutoInitSpan autoInitSpan (this);
399	AssertReturn (autoInitSpan.isOk(), E_FAIL);
400
401	HRESULT rc = S_OK;
402
403	/* share the parent weakly */
404	unconst (mParent) = aParent;
405
406	/* register with parent early, since uninit() will unconditionally
407	* unregister on failure */
408	mParent->addDependentChild (this);
409
410	/* allocate the essential machine data structure (the rest will be
411	* allocated later by initDataAndChildObjects() */
412	mData.allocate();
413
414	/* memorize the config file name (as provided) */
415	mData->mConfigFile = aConfigFile;
416
417	/* get the full file name */
418	Utf8Str configFileFull;
419	int vrc = mParent->calculateFullPath (Utf8Str (aConfigFile), configFileFull);
420	if (RT_FAILURE (vrc))
421	return setError (VBOX_E_FILE_ERROR,
422	tr ("Invalid machine settings file name '%ls' (%Rrc)"),
423	aConfigFile, vrc);
424
425	mData->mConfigFileFull = configFileFull;
426
427	if (aMode == Init_Registered)
428	{
429	mData->mRegistered = TRUE;
430
431	/* store the supplied UUID (will be used to check for UUID consistency
432	* in loadSettings() */
433	unconst (mData->mUuid) = *aId;
434	rc = registeredInit();
435	}
436	else
437	{
438	if (aMode == Init_Existing)
439	{
440	/* lock the settings file */
441	rc = lockConfig();
442	}
443	else if (aMode == Init_New)
444	{
445	/* check for the file existence */
446	RTFILE f = NIL_RTFILE;
447	int vrc = RTFileOpen (&f, configFileFull, RTFILE_O_READ);
448	if (RT_SUCCESS (vrc) \|\| vrc == VERR_SHARING_VIOLATION)
449	{
450	rc = setError (VBOX_E_FILE_ERROR,
451	tr ("Machine settings file '%s' already exists"),
452	configFileFull.raw());
453	if (RT_SUCCESS (vrc))
454	RTFileClose (f);
455	}
456	else
457	{
458	if (vrc != VERR_FILE_NOT_FOUND && vrc != VERR_PATH_NOT_FOUND)
459	rc = setError (VBOX_E_FILE_ERROR,
460	tr ("Invalid machine settings file name '%ls' (%Rrc)"),
461	mData->mConfigFileFull.raw(), vrc);
462	}
463	}
464	else
465	AssertFailed();
466
467	if (SUCCEEDED (rc))
468	rc = initDataAndChildObjects();
469
470	if (SUCCEEDED (rc))
471	{
472	/* set to true now to cause uninit() to call
473	* uninitDataAndChildObjects() on failure */
474	mData->mAccessible = TRUE;
475
476	if (aMode != Init_New)
477	{
478	rc = loadSettings (false /* aRegistered */);
479	}
480	else
481	{
482	/* create the machine UUID */
483	if (aId)
484	unconst (mData->mUuid) = *aId;
485	else
486	unconst (mData->mUuid).create();
487
488	/* memorize the provided new machine's name */
489	mUserData->mName = aName;
490	mUserData->mNameSync = aNameSync;
491
492	/* initialize the default snapshots folder
493	* (note: depends on the name value set above!) */
494	rc = COMSETTER(SnapshotFolder) (NULL);
495	AssertComRC (rc);
496
497	if (aOsType)
498	{
499	/* Store OS type */
500	mUserData->mOSTypeId = aOsType->id();
501
502	/* Apply machine defaults */
503	if (aOsType->recommendedVirtEx())
504	mHWData->mHWVirtExEnabled = TSBool_True;
505	else
506	mHWData->mHWVirtExEnabled = TSBool_False;
507
508	/* Apply BIOS defaults */
509	mBIOSSettings->applyDefaults (aOsType);
510
511	/* Apply network adapters defaults */
512	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
513	mNetworkAdapters [slot]->applyDefaults (aOsType);
514	}
515	}
516
517	/* commit all changes made during the initialization */
518	if (SUCCEEDED (rc))
519	commit();
520	}
521	}
522
523	/* Confirm a successful initialization when it's the case */
524	if (SUCCEEDED (rc))
525	{
526	if (mData->mAccessible)
527	autoInitSpan.setSucceeded();
528	else
529	autoInitSpan.setLimited();
530	}
531
532	LogFlowThisFunc (("mName='%ls', mRegistered=%RTbool, mAccessible=%RTbool "
533	"rc=%08X\n",
534	!!mUserData ? mUserData->mName.raw() : NULL,
535	mData->mRegistered, mData->mAccessible, rc));
536
537	LogFlowThisFuncLeave();
538
539	return rc;
540	}
541
542	/**
543	* Initializes the registered machine by loading the settings file.
544	* This method is separated from #init() in order to make it possible to
545	* retry the operation after VirtualBox startup instead of refusing to
546	* startup the whole VirtualBox server in case if the settings file of some
547	* registered VM is invalid or inaccessible.
548	*
549	* @note Must be always called from this object's write lock
550	* (unless called from #init() that doesn't need any locking).
551	* @note Locks the mUSBController method for writing.
552	* @note Subclasses must not call this method.
553	*/
554	HRESULT Machine::registeredInit()
555	{
556	AssertReturn (mType == IsMachine, E_FAIL);
557	AssertReturn (!mData->mUuid.isEmpty(), E_FAIL);
558	AssertReturn (!mData->mAccessible, E_FAIL);
559
560	HRESULT rc = lockConfig();
561
562	if (SUCCEEDED (rc))
563	rc = initDataAndChildObjects();
564
565	if (SUCCEEDED (rc))
566	{
567	/* Temporarily reset the registered flag in order to let setters
568	* potentially called from loadSettings() succeed (isMutable() used in
569	* all setters will return FALSE for a Machine instance if mRegistered
570	* is TRUE). */
571	mData->mRegistered = FALSE;
572
573	rc = loadSettings (true /* aRegistered */);
574
575	/* Restore the registered flag (even on failure) */
576	mData->mRegistered = TRUE;
577
578	if (FAILED (rc))
579	unlockConfig();
580	}
581
582	if (SUCCEEDED (rc))
583	{
584	/* Set mAccessible to TRUE only if we successfully locked and loaded
585	* the settings file */
586	mData->mAccessible = TRUE;
587
588	/* commit all changes made during loading the settings file */
589	commit();
590	}
591	else
592	{
593	/* If the machine is registered, then, instead of returning a
594	* failure, we mark it as inaccessible and set the result to
595	* success to give it a try later */
596
597	/* fetch the current error info */
598	mData->mAccessError = com::ErrorInfo();
599	LogWarning (("Machine {%RTuuid} is inaccessible! [%ls]\n",
600	mData->mUuid.raw(),
601	mData->mAccessError.getText().raw()));
602
603	/* rollback all changes */
604	rollback (false /* aNotify */);
605
606	/* uninitialize the common part to make sure all data is reset to
607	* default (null) values */
608	uninitDataAndChildObjects();
609
610	rc = S_OK;
611	}
612
613	return rc;
614	}
615
616	/**
617	* Uninitializes the instance.
618	* Called either from FinalRelease() or by the parent when it gets destroyed.
619	*
620	* @note The caller of this method must make sure that this object
621	* a) doesn't have active callers on the current thread and b) is not locked
622	* by the current thread; otherwise uninit() will hang either a) due to
623	* AutoUninitSpan waiting for a number of calls to drop to zero or b) due to
624	* a dead-lock caused by this thread waiting for all callers on the other
625	* threads are done but preventing them from doing so by holding a lock.
626	*/
627	void Machine::uninit()
628	{
629	LogFlowThisFuncEnter();
630
631	Assert (!isWriteLockOnCurrentThread());
632
633	/* Enclose the state transition Ready->InUninit->NotReady */
634	AutoUninitSpan autoUninitSpan (this);
635	if (autoUninitSpan.uninitDone())
636	return;
637
638	Assert (mType == IsMachine);
639	Assert (!!mData);
640
641	LogFlowThisFunc (("initFailed()=%d\n", autoUninitSpan.initFailed()));
642	LogFlowThisFunc (("mRegistered=%d\n", mData->mRegistered));
643
644	/* Enter this object lock because there may be a SessionMachine instance
645	* somewhere around, that shares our data and lock but doesn't use our
646	* addCaller()/removeCaller(), and it may be also accessing the same data
647	* members. mParent lock is necessary as well because of
648	* SessionMachine::uninit(), etc.
649	*/
650	AutoMultiWriteLock2 alock (mParent, this);
651
652	if (!mData->mSession.mMachine.isNull())
653	{
654	/* Theoretically, this can only happen if the VirtualBox server has been
655	* terminated while there were clients running that owned open direct
656	* sessions. Since in this case we are definitely called by
657	* VirtualBox::uninit(), we may be sure that SessionMachine::uninit()
658	* won't happen on the client watcher thread (because it does
659	* VirtualBox::addCaller() for the duration of the
660	* SessionMachine::checkForDeath() call, so that VirtualBox::uninit()
661	* cannot happen until the VirtualBox caller is released). This is
662	* important, because SessionMachine::uninit() cannot correctly operate
663	* after we return from this method (it expects the Machine instance is
664	* still valid). We'll call it ourselves below.
665	*/
666	LogWarningThisFunc (("Session machine is not NULL (%p), "
667	"the direct session is still open!\n",
668	(SessionMachine *) mData->mSession.mMachine));
669
670	if (Global::IsOnlineOrTransient (mData->mMachineState))
671	{
672	LogWarningThisFunc (("Setting state to Aborted!\n"));
673	/* set machine state using SessionMachine reimplementation */
674	static_cast <Machine *> (mData->mSession.mMachine)
675	->setMachineState (MachineState_Aborted);
676	}
677
678	/*
679	* Uninitialize SessionMachine using public uninit() to indicate
680	* an unexpected uninitialization.
681	*/
682	mData->mSession.mMachine->uninit();
683	/* SessionMachine::uninit() must set mSession.mMachine to null */
684	Assert (mData->mSession.mMachine.isNull());
685	}
686
687	/* the lock is no more necessary (SessionMachine is uninitialized) */
688	alock.leave();
689
690	/* make sure the configuration is unlocked */
691	unlockConfig();
692
693	if (isModified())
694	{
695	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
696	rollback (false /* aNotify */);
697	}
698
699	if (mData->mAccessible)
700	uninitDataAndChildObjects();
701
702	/* free the essential data structure last */
703	mData.free();
704
705	mParent->removeDependentChild (this);
706
707	LogFlowThisFuncLeave();
708	}
709
710	// IMachine properties
711	/////////////////////////////////////////////////////////////////////////////
712
713	STDMETHODIMP Machine::COMGETTER(Parent) (IVirtualBox **aParent)
714	{
715	CheckComArgOutPointerValid (aParent);
716
717	AutoLimitedCaller autoCaller (this);
718	CheckComRCReturnRC (autoCaller.rc());
719
720	/* mParent is constant during life time, no need to lock */
721	mParent.queryInterfaceTo (aParent);
722
723	return S_OK;
724	}
725
726	STDMETHODIMP Machine::COMGETTER(Accessible) (BOOL *aAccessible)
727	{
728	CheckComArgOutPointerValid (aAccessible);
729
730	AutoLimitedCaller autoCaller (this);
731	CheckComRCReturnRC (autoCaller.rc());
732
733	AutoWriteLock alock (this);
734
735	HRESULT rc = S_OK;
736
737	if (!mData->mAccessible)
738	{
739	/* try to initialize the VM once more if not accessible */
740
741	AutoReinitSpan autoReinitSpan (this);
742	AssertReturn (autoReinitSpan.isOk(), E_FAIL);
743
744	rc = registeredInit();
745
746	if (SUCCEEDED (rc) && mData->mAccessible)
747	{
748	autoReinitSpan.setSucceeded();
749
750	/* make sure interesting parties will notice the accessibility
751	* state change */
752	mParent->onMachineStateChange (mData->mUuid, mData->mMachineState);
753	mParent->onMachineDataChange (mData->mUuid);
754	}
755	}
756
757	if (SUCCEEDED (rc))
758	*aAccessible = mData->mAccessible;
759
760	return rc;
761	}
762
763	STDMETHODIMP Machine::COMGETTER(AccessError) (IVirtualBoxErrorInfo **aAccessError)
764	{
765	CheckComArgOutPointerValid (aAccessError);
766
767	AutoLimitedCaller autoCaller (this);
768	CheckComRCReturnRC (autoCaller.rc());
769
770	AutoReadLock alock (this);
771
772	if (mData->mAccessible \|\| !mData->mAccessError.isBasicAvailable())
773	{
774	/* return shortly */
775	aAccessError = NULL;
776	return S_OK;
777	}
778
779	HRESULT rc = S_OK;
780
781	ComObjPtr <VirtualBoxErrorInfo> errorInfo;
782	rc = errorInfo.createObject();
783	if (SUCCEEDED (rc))
784	{
785	errorInfo->init (mData->mAccessError.getResultCode(),
786	mData->mAccessError.getInterfaceID(),
787	mData->mAccessError.getComponent(),
788	mData->mAccessError.getText());
789	rc = errorInfo.queryInterfaceTo (aAccessError);
790	}
791
792	return rc;
793	}
794
795	STDMETHODIMP Machine::COMGETTER(Name) (BSTR *aName)
796	{
797	CheckComArgOutPointerValid (aName);
798
799	AutoCaller autoCaller (this);
800	CheckComRCReturnRC (autoCaller.rc());
801
802	AutoReadLock alock (this);
803
804	mUserData->mName.cloneTo (aName);
805
806	return S_OK;
807	}
808
809	STDMETHODIMP Machine::COMSETTER(Name) (IN_BSTR aName)
810	{
811	CheckComArgNotNull (aName);
812
813	if (!*aName)
814	return setError (E_INVALIDARG,
815	tr ("Machine name cannot be empty"));
816
817	AutoCaller autoCaller (this);
818	CheckComRCReturnRC (autoCaller.rc());
819
820	AutoWriteLock alock (this);
821
822	HRESULT rc = checkStateDependency (MutableStateDep);
823	CheckComRCReturnRC (rc);
824
825	mUserData.backup();
826	mUserData->mName = aName;
827
828	return S_OK;
829	}
830
831	STDMETHODIMP Machine::COMGETTER(Description) (BSTR *aDescription)
832	{
833	CheckComArgOutPointerValid (aDescription);
834
835	AutoCaller autoCaller (this);
836	CheckComRCReturnRC (autoCaller.rc());
837
838	AutoReadLock alock (this);
839
840	mUserData->mDescription.cloneTo (aDescription);
841
842	return S_OK;
843	}
844
845	STDMETHODIMP Machine::COMSETTER(Description) (IN_BSTR aDescription)
846	{
847	AutoCaller autoCaller (this);
848	CheckComRCReturnRC (autoCaller.rc());
849
850	AutoWriteLock alock (this);
851
852	HRESULT rc = checkStateDependency (MutableStateDep);
853	CheckComRCReturnRC (rc);
854
855	mUserData.backup();
856	mUserData->mDescription = aDescription;
857
858	return S_OK;
859	}
860
861	STDMETHODIMP Machine::COMGETTER(Id) (OUT_GUID aId)
862	{
863	CheckComArgOutPointerValid (aId);
864
865	AutoLimitedCaller autoCaller (this);
866	CheckComRCReturnRC (autoCaller.rc());
867
868	AutoReadLock alock (this);
869
870	mData->mUuid.cloneTo (aId);
871
872	return S_OK;
873	}
874
875	STDMETHODIMP Machine::COMGETTER(OSTypeId) (BSTR *aOSTypeId)
876	{
877	CheckComArgOutPointerValid (aOSTypeId);
878
879	AutoCaller autoCaller (this);
880	CheckComRCReturnRC (autoCaller.rc());
881
882	AutoReadLock alock (this);
883
884	mUserData->mOSTypeId.cloneTo (aOSTypeId);
885
886	return S_OK;
887	}
888
889	STDMETHODIMP Machine::COMSETTER(OSTypeId) (IN_BSTR aOSTypeId)
890	{
891	CheckComArgNotNull (aOSTypeId);
892
893	AutoCaller autoCaller (this);
894	CheckComRCReturnRC (autoCaller.rc());
895
896	/* look up the object by Id to check it is valid */
897	ComPtr <IGuestOSType> guestOSType;
898	HRESULT rc = mParent->GetGuestOSType (aOSTypeId,
899	guestOSType.asOutParam());
900	CheckComRCReturnRC (rc);
901
902	/* when setting, always use the "etalon" value for consistency -- lookup
903	* by ID is case-insensitive and the input value may have different case */
904	Bstr osTypeId;
905	rc = guestOSType->COMGETTER(Id) (osTypeId.asOutParam());
906	CheckComRCReturnRC (rc);
907
908	AutoWriteLock alock (this);
909
910	rc = checkStateDependency (MutableStateDep);
911	CheckComRCReturnRC (rc);
912
913	mUserData.backup();
914	mUserData->mOSTypeId = osTypeId;
915
916	return S_OK;
917	}
918
919	STDMETHODIMP Machine::COMGETTER(HardwareVersion) (BSTR *aHWVersion)
920	{
921	if (!aHWVersion)
922	return E_POINTER;
923
924	AutoCaller autoCaller (this);
925	CheckComRCReturnRC (autoCaller.rc());
926
927	AutoReadLock alock (this);
928
929	mHWData->mHWVersion.cloneTo (aHWVersion);
930
931	return S_OK;
932	}
933
934	STDMETHODIMP Machine::COMSETTER(HardwareVersion) (IN_BSTR aHWVersion)
935	{
936	/* check known version */
937	Utf8Str hwVersion = aHWVersion;
938	if ( hwVersion.compare ("1") != 0
939	&& hwVersion.compare ("2") != 0)
940	return setError (E_INVALIDARG,
941	tr ("Invalid hardware version: %ls\n"), aHWVersion);
942
943	AutoCaller autoCaller (this);
944	CheckComRCReturnRC (autoCaller.rc());
945
946	AutoWriteLock alock (this);
947
948	HRESULT rc = checkStateDependency (MutableStateDep);
949	CheckComRCReturnRC (rc);
950
951	mHWData.backup();
952	mHWData->mHWVersion = hwVersion;
953
954	return S_OK;
955	}
956
957	STDMETHODIMP Machine::COMGETTER(MemorySize) (ULONG *memorySize)
958	{
959	if (!memorySize)
960	return E_POINTER;
961
962	AutoCaller autoCaller (this);
963	CheckComRCReturnRC (autoCaller.rc());
964
965	AutoReadLock alock (this);
966
967	*memorySize = mHWData->mMemorySize;
968
969	return S_OK;
970	}
971
972	STDMETHODIMP Machine::COMSETTER(MemorySize) (ULONG memorySize)
973	{
974	/* check RAM limits */
975	if (memorySize < SchemaDefs::MinGuestRAM \|\|
976	memorySize > SchemaDefs::MaxGuestRAM)
977	return setError (E_INVALIDARG,
978	tr ("Invalid RAM size: %lu MB (must be in range [%lu, %lu] MB)"),
979	memorySize, SchemaDefs::MinGuestRAM, SchemaDefs::MaxGuestRAM);
980
981	AutoCaller autoCaller (this);
982	CheckComRCReturnRC (autoCaller.rc());
983
984	AutoWriteLock alock (this);
985
986	HRESULT rc = checkStateDependency (MutableStateDep);
987	CheckComRCReturnRC (rc);
988
989	mHWData.backup();
990	mHWData->mMemorySize = memorySize;
991
992	return S_OK;
993	}
994
995	STDMETHODIMP Machine::COMGETTER(CPUCount) (ULONG *CPUCount)
996	{
997	if (!CPUCount)
998	return E_POINTER;
999
1000	AutoCaller autoCaller (this);
1001	CheckComRCReturnRC (autoCaller.rc());
1002
1003	AutoReadLock alock (this);
1004
1005	*CPUCount = mHWData->mCPUCount;
1006
1007	return S_OK;
1008	}
1009
1010	STDMETHODIMP Machine::COMSETTER(CPUCount) (ULONG CPUCount)
1011	{
1012	/* check RAM limits */
1013	if (CPUCount < SchemaDefs::MinCPUCount \|\|
1014	CPUCount > SchemaDefs::MaxCPUCount)
1015	return setError (E_INVALIDARG,
1016	tr ("Invalid virtual CPU count: %lu (must be in range [%lu, %lu])"),
1017	CPUCount, SchemaDefs::MinCPUCount, SchemaDefs::MaxCPUCount);
1018
1019	AutoCaller autoCaller (this);
1020	CheckComRCReturnRC (autoCaller.rc());
1021
1022	AutoWriteLock alock (this);
1023
1024	HRESULT rc = checkStateDependency (MutableStateDep);
1025	CheckComRCReturnRC (rc);
1026
1027	mHWData.backup();
1028	mHWData->mCPUCount = CPUCount;
1029
1030	return S_OK;
1031	}
1032
1033	STDMETHODIMP Machine::COMGETTER(VRAMSize) (ULONG *memorySize)
1034	{
1035	if (!memorySize)
1036	return E_POINTER;
1037
1038	AutoCaller autoCaller (this);
1039	CheckComRCReturnRC (autoCaller.rc());
1040
1041	AutoReadLock alock (this);
1042
1043	*memorySize = mHWData->mVRAMSize;
1044
1045	return S_OK;
1046	}
1047
1048	STDMETHODIMP Machine::COMSETTER(VRAMSize) (ULONG memorySize)
1049	{
1050	/* check VRAM limits */
1051	if (memorySize < SchemaDefs::MinGuestVRAM \|\|
1052	memorySize > SchemaDefs::MaxGuestVRAM)
1053	return setError (E_INVALIDARG,
1054	tr ("Invalid VRAM size: %lu MB (must be in range [%lu, %lu] MB)"),
1055	memorySize, SchemaDefs::MinGuestVRAM, SchemaDefs::MaxGuestVRAM);
1056
1057	AutoCaller autoCaller (this);
1058	CheckComRCReturnRC (autoCaller.rc());
1059
1060	AutoWriteLock alock (this);
1061
1062	HRESULT rc = checkStateDependency (MutableStateDep);
1063	CheckComRCReturnRC (rc);
1064
1065	mHWData.backup();
1066	mHWData->mVRAMSize = memorySize;
1067
1068	return S_OK;
1069	}
1070
1071	/** @todo this method should not be public */
1072	STDMETHODIMP Machine::COMGETTER(MemoryBalloonSize) (ULONG *memoryBalloonSize)
1073	{
1074	if (!memoryBalloonSize)
1075	return E_POINTER;
1076
1077	AutoCaller autoCaller (this);
1078	CheckComRCReturnRC (autoCaller.rc());
1079
1080	AutoReadLock alock (this);
1081
1082	*memoryBalloonSize = mHWData->mMemoryBalloonSize;
1083
1084	return S_OK;
1085	}
1086
1087	/** @todo this method should not be public */
1088	STDMETHODIMP Machine::COMSETTER(MemoryBalloonSize) (ULONG memoryBalloonSize)
1089	{
1090	/* check limits */
1091	if (memoryBalloonSize >= VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize))
1092	return setError (E_INVALIDARG,
1093	tr ("Invalid memory balloon size: %lu MB (must be in range [%lu, %lu] MB)"),
1094	memoryBalloonSize, 0, VMMDEV_MAX_MEMORY_BALLOON (mHWData->mMemorySize));
1095
1096	AutoCaller autoCaller (this);
1097	CheckComRCReturnRC (autoCaller.rc());
1098
1099	AutoWriteLock alock (this);
1100
1101	HRESULT rc = checkStateDependency (MutableStateDep);
1102	CheckComRCReturnRC (rc);
1103
1104	mHWData.backup();
1105	mHWData->mMemoryBalloonSize = memoryBalloonSize;
1106
1107	return S_OK;
1108	}
1109
1110	/** @todo this method should not be public */
1111	STDMETHODIMP Machine::COMGETTER(StatisticsUpdateInterval) (ULONG *statisticsUpdateInterval)
1112	{
1113	if (!statisticsUpdateInterval)
1114	return E_POINTER;
1115
1116	AutoCaller autoCaller (this);
1117	CheckComRCReturnRC (autoCaller.rc());
1118
1119	AutoReadLock alock (this);
1120
1121	*statisticsUpdateInterval = mHWData->mStatisticsUpdateInterval;
1122
1123	return S_OK;
1124	}
1125
1126	/** @todo this method should not be public */
1127	STDMETHODIMP Machine::COMSETTER(StatisticsUpdateInterval) (ULONG statisticsUpdateInterval)
1128	{
1129	AutoCaller autoCaller (this);
1130	CheckComRCReturnRC (autoCaller.rc());
1131
1132	AutoWriteLock alock (this);
1133
1134	HRESULT rc = checkStateDependency (MutableStateDep);
1135	CheckComRCReturnRC (rc);
1136
1137	mHWData.backup();
1138	mHWData->mStatisticsUpdateInterval = statisticsUpdateInterval;
1139
1140	return S_OK;
1141	}
1142
1143
1144	STDMETHODIMP Machine::COMGETTER(Accelerate3DEnabled)(BOOL *enabled)
1145	{
1146	if (!enabled)
1147	return E_POINTER;
1148
1149	AutoCaller autoCaller (this);
1150	CheckComRCReturnRC (autoCaller.rc());
1151
1152	AutoReadLock alock (this);
1153
1154	*enabled = mHWData->mAccelerate3DEnabled;
1155
1156	return S_OK;
1157	}
1158
1159	STDMETHODIMP Machine::COMSETTER(Accelerate3DEnabled)(BOOL enable)
1160	{
1161	AutoCaller autoCaller (this);
1162	CheckComRCReturnRC (autoCaller.rc());
1163
1164	AutoWriteLock alock (this);
1165
1166	HRESULT rc = checkStateDependency (MutableStateDep);
1167	CheckComRCReturnRC (rc);
1168
1169	/** @todo check validity! */
1170
1171	mHWData.backup();
1172	mHWData->mAccelerate3DEnabled = enable;
1173
1174	return S_OK;
1175	}
1176
1177
1178	STDMETHODIMP Machine::COMGETTER(MonitorCount) (ULONG *monitorCount)
1179	{
1180	if (!monitorCount)
1181	return E_POINTER;
1182
1183	AutoCaller autoCaller (this);
1184	CheckComRCReturnRC (autoCaller.rc());
1185
1186	AutoReadLock alock (this);
1187
1188	*monitorCount = mHWData->mMonitorCount;
1189
1190	return S_OK;
1191	}
1192
1193	STDMETHODIMP Machine::COMSETTER(MonitorCount) (ULONG monitorCount)
1194	{
1195	/* make sure monitor count is a sensible number */
1196	if (monitorCount < 1 \|\| monitorCount > SchemaDefs::MaxGuestMonitors)
1197	return setError (E_INVALIDARG,
1198	tr ("Invalid monitor count: %lu (must be in range [%lu, %lu])"),
1199	monitorCount, 1, SchemaDefs::MaxGuestMonitors);
1200
1201	AutoCaller autoCaller (this);
1202	CheckComRCReturnRC (autoCaller.rc());
1203
1204	AutoWriteLock alock (this);
1205
1206	HRESULT rc = checkStateDependency (MutableStateDep);
1207	CheckComRCReturnRC (rc);
1208
1209	mHWData.backup();
1210	mHWData->mMonitorCount = monitorCount;
1211
1212	return S_OK;
1213	}
1214
1215	STDMETHODIMP Machine::COMGETTER(BIOSSettings)(IBIOSSettings **biosSettings)
1216	{
1217	if (!biosSettings)
1218	return E_POINTER;
1219
1220	AutoCaller autoCaller (this);
1221	CheckComRCReturnRC (autoCaller.rc());
1222
1223	/* mBIOSSettings is constant during life time, no need to lock */
1224	mBIOSSettings.queryInterfaceTo (biosSettings);
1225
1226	return S_OK;
1227	}
1228
1229	STDMETHODIMP Machine::COMGETTER(HWVirtExEnabled)(TSBool_T *enabled)
1230	{
1231	if (!enabled)
1232	return E_POINTER;
1233
1234	AutoCaller autoCaller (this);
1235	CheckComRCReturnRC (autoCaller.rc());
1236
1237	AutoReadLock alock (this);
1238
1239	*enabled = mHWData->mHWVirtExEnabled;
1240
1241	return S_OK;
1242	}
1243
1244	STDMETHODIMP Machine::COMSETTER(HWVirtExEnabled)(TSBool_T enable)
1245	{
1246	AutoCaller autoCaller (this);
1247	CheckComRCReturnRC (autoCaller.rc());
1248
1249	AutoWriteLock alock (this);
1250
1251	HRESULT rc = checkStateDependency (MutableStateDep);
1252	CheckComRCReturnRC (rc);
1253
1254	/** @todo check validity! */
1255
1256	mHWData.backup();
1257	mHWData->mHWVirtExEnabled = enable;
1258
1259	return S_OK;
1260	}
1261
1262	STDMETHODIMP Machine::COMGETTER(HWVirtExNestedPagingEnabled)(BOOL *enabled)
1263	{
1264	if (!enabled)
1265	return E_POINTER;
1266
1267	AutoCaller autoCaller (this);
1268	CheckComRCReturnRC (autoCaller.rc());
1269
1270	AutoReadLock alock (this);
1271
1272	*enabled = mHWData->mHWVirtExNestedPagingEnabled;
1273
1274	return S_OK;
1275	}
1276
1277	STDMETHODIMP Machine::COMSETTER(HWVirtExNestedPagingEnabled)(BOOL enable)
1278	{
1279	AutoCaller autoCaller (this);
1280	CheckComRCReturnRC (autoCaller.rc());
1281
1282	AutoWriteLock alock (this);
1283
1284	HRESULT rc = checkStateDependency (MutableStateDep);
1285	CheckComRCReturnRC (rc);
1286
1287	/** @todo check validity! */
1288
1289	mHWData.backup();
1290	mHWData->mHWVirtExNestedPagingEnabled = enable;
1291
1292	return S_OK;
1293	}
1294
1295	STDMETHODIMP Machine::COMGETTER(HWVirtExVPIDEnabled)(BOOL *enabled)
1296	{
1297	if (!enabled)
1298	return E_POINTER;
1299
1300	AutoCaller autoCaller (this);
1301	CheckComRCReturnRC (autoCaller.rc());
1302
1303	AutoReadLock alock (this);
1304
1305	*enabled = mHWData->mHWVirtExVPIDEnabled;
1306
1307	return S_OK;
1308	}
1309
1310	STDMETHODIMP Machine::COMSETTER(HWVirtExVPIDEnabled)(BOOL enable)
1311	{
1312	AutoCaller autoCaller (this);
1313	CheckComRCReturnRC (autoCaller.rc());
1314
1315	AutoWriteLock alock (this);
1316
1317	HRESULT rc = checkStateDependency (MutableStateDep);
1318	CheckComRCReturnRC (rc);
1319
1320	/** @todo check validity! */
1321
1322	mHWData.backup();
1323	mHWData->mHWVirtExVPIDEnabled = enable;
1324
1325	return S_OK;
1326	}
1327
1328	STDMETHODIMP Machine::COMGETTER(PAEEnabled)(BOOL *enabled)
1329	{
1330	if (!enabled)
1331	return E_POINTER;
1332
1333	AutoCaller autoCaller (this);
1334	CheckComRCReturnRC (autoCaller.rc());
1335
1336	AutoReadLock alock (this);
1337
1338	*enabled = mHWData->mPAEEnabled;
1339
1340	return S_OK;
1341	}
1342
1343	STDMETHODIMP Machine::COMSETTER(PAEEnabled)(BOOL enable)
1344	{
1345	AutoCaller autoCaller (this);
1346	CheckComRCReturnRC (autoCaller.rc());
1347
1348	AutoWriteLock alock (this);
1349
1350	HRESULT rc = checkStateDependency (MutableStateDep);
1351	CheckComRCReturnRC (rc);
1352
1353	/** @todo check validity! */
1354
1355	mHWData.backup();
1356	mHWData->mPAEEnabled = enable;
1357
1358	return S_OK;
1359	}
1360
1361	STDMETHODIMP Machine::COMGETTER(SnapshotFolder) (BSTR *aSnapshotFolder)
1362	{
1363	CheckComArgOutPointerValid (aSnapshotFolder);
1364
1365	AutoCaller autoCaller (this);
1366	CheckComRCReturnRC (autoCaller.rc());
1367
1368	AutoReadLock alock (this);
1369
1370	mUserData->mSnapshotFolderFull.cloneTo (aSnapshotFolder);
1371
1372	return S_OK;
1373	}
1374
1375	STDMETHODIMP Machine::COMSETTER(SnapshotFolder) (IN_BSTR aSnapshotFolder)
1376	{
1377	/* @todo (r=dmik):
1378	* 1. Allow to change the name of the snapshot folder containing snapshots
1379	* 2. Rename the folder on disk instead of just changing the property
1380	* value (to be smart and not to leave garbage). Note that it cannot be
1381	* done here because the change may be rolled back. Thus, the right
1382	* place is #saveSettings().
1383	*/
1384
1385	AutoCaller autoCaller (this);
1386	CheckComRCReturnRC (autoCaller.rc());
1387
1388	AutoWriteLock alock (this);
1389
1390	HRESULT rc = checkStateDependency (MutableStateDep);
1391	CheckComRCReturnRC (rc);
1392
1393	if (!mData->mCurrentSnapshot.isNull())
1394	return setError (E_FAIL,
1395	tr ("The snapshot folder of a machine with snapshots cannot "
1396	"be changed (please discard all snapshots first)"));
1397
1398	Utf8Str snapshotFolder = aSnapshotFolder;
1399
1400	if (snapshotFolder.isEmpty())
1401	{
1402	if (isInOwnDir())
1403	{
1404	/* the default snapshots folder is 'Snapshots' in the machine dir */
1405	snapshotFolder = Utf8Str ("Snapshots");
1406	}
1407	else
1408	{
1409	/* the default snapshots folder is {UUID}, for backwards
1410	* compatibility and to resolve conflicts */
1411	snapshotFolder = Utf8StrFmt ("{%RTuuid}", mData->mUuid.raw());
1412	}
1413	}
1414
1415	int vrc = calculateFullPath (snapshotFolder, snapshotFolder);
1416	if (RT_FAILURE (vrc))
1417	return setError (E_FAIL,
1418	tr ("Invalid snapshot folder '%ls' (%Rrc)"),
1419	aSnapshotFolder, vrc);
1420
1421	mUserData.backup();
1422	mUserData->mSnapshotFolder = aSnapshotFolder;
1423	mUserData->mSnapshotFolderFull = snapshotFolder;
1424
1425	return S_OK;
1426	}
1427
1428	STDMETHODIMP Machine::
1429	COMGETTER(HardDisk2Attachments) (ComSafeArrayOut (IHardDisk2Attachment *, aAttachments))
1430	{
1431	if (ComSafeArrayOutIsNull (aAttachments))
1432	return E_POINTER;
1433
1434	AutoCaller autoCaller (this);
1435	CheckComRCReturnRC (autoCaller.rc());
1436
1437	AutoReadLock alock (this);
1438
1439	SafeIfaceArray <IHardDisk2Attachment> attachments (mHDData->mAttachments);
1440	attachments.detachTo (ComSafeArrayOutArg (aAttachments));
1441
1442	return S_OK;
1443	}
1444
1445	STDMETHODIMP Machine::COMGETTER(VRDPServer)(IVRDPServer **vrdpServer)
1446	{
1447	#ifdef VBOX_WITH_VRDP
1448	if (!vrdpServer)
1449	return E_POINTER;
1450
1451	AutoCaller autoCaller (this);
1452	CheckComRCReturnRC (autoCaller.rc());
1453
1454	AutoReadLock alock (this);
1455
1456	Assert (!!mVRDPServer);
1457	mVRDPServer.queryInterfaceTo (vrdpServer);
1458
1459	return S_OK;
1460	#else
1461	ReturnComNotImplemented();
1462	#endif
1463	}
1464
1465	STDMETHODIMP Machine::COMGETTER(DVDDrive) (IDVDDrive **dvdDrive)
1466	{
1467	if (!dvdDrive)
1468	return E_POINTER;
1469
1470	AutoCaller autoCaller (this);
1471	CheckComRCReturnRC (autoCaller.rc());
1472
1473	AutoReadLock alock (this);
1474
1475	Assert (!!mDVDDrive);
1476	mDVDDrive.queryInterfaceTo (dvdDrive);
1477	return S_OK;
1478	}
1479
1480	STDMETHODIMP Machine::COMGETTER(FloppyDrive) (IFloppyDrive **floppyDrive)
1481	{
1482	if (!floppyDrive)
1483	return E_POINTER;
1484
1485	AutoCaller autoCaller (this);
1486	CheckComRCReturnRC (autoCaller.rc());
1487
1488	AutoReadLock alock (this);
1489
1490	Assert (!!mFloppyDrive);
1491	mFloppyDrive.queryInterfaceTo (floppyDrive);
1492	return S_OK;
1493	}
1494
1495	STDMETHODIMP Machine::COMGETTER(AudioAdapter)(IAudioAdapter **audioAdapter)
1496	{
1497	if (!audioAdapter)
1498	return E_POINTER;
1499
1500	AutoCaller autoCaller (this);
1501	CheckComRCReturnRC (autoCaller.rc());
1502
1503	AutoReadLock alock (this);
1504
1505	mAudioAdapter.queryInterfaceTo (audioAdapter);
1506	return S_OK;
1507	}
1508
1509	STDMETHODIMP Machine::COMGETTER(USBController) (IUSBController **aUSBController)
1510	{
1511	#ifdef VBOX_WITH_USB
1512	CheckComArgOutPointerValid (aUSBController);
1513
1514	AutoCaller autoCaller (this);
1515	CheckComRCReturnRC (autoCaller.rc());
1516
1517	MultiResult rc = mParent->host()->checkUSBProxyService();
1518	CheckComRCReturnRC (rc);
1519
1520	AutoReadLock alock (this);
1521
1522	return rc = mUSBController.queryInterfaceTo (aUSBController);
1523	#else
1524	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1525	* extended error info to indicate that USB is simply not available
1526	* (w/o treting it as a failure), for example, as in OSE */
1527	ReturnComNotImplemented();
1528	#endif
1529	}
1530
1531	STDMETHODIMP Machine::COMGETTER(SATAController) (ISATAController **aSATAController)
1532	{
1533	#ifdef VBOX_WITH_AHCI
1534	CheckComArgOutPointerValid (aSATAController);
1535
1536	AutoCaller autoCaller (this);
1537	CheckComRCReturnRC (autoCaller.rc());
1538
1539	AutoReadLock alock (this);
1540
1541	return mSATAController.queryInterfaceTo (aSATAController);
1542	#else
1543	/* Note: The GUI depends on this method returning E_NOTIMPL with no
1544	* extended error info to indicate that SATA is simply not available
1545	* (w/o treting it as a failure), for example, as in OSE */
1546	ReturnComNotImplemented();
1547	#endif
1548	}
1549
1550	STDMETHODIMP Machine::COMGETTER(SettingsFilePath) (BSTR *aFilePath)
1551	{
1552	CheckComArgOutPointerValid (aFilePath);
1553
1554	AutoLimitedCaller autoCaller (this);
1555	CheckComRCReturnRC (autoCaller.rc());
1556
1557	AutoReadLock alock (this);
1558
1559	mData->mConfigFileFull.cloneTo (aFilePath);
1560	return S_OK;
1561	}
1562
1563	STDMETHODIMP Machine::
1564	COMGETTER(SettingsFileVersion) (BSTR *aSettingsFileVersion)
1565	{
1566	CheckComArgOutPointerValid (aSettingsFileVersion);
1567
1568	AutoCaller autoCaller (this);
1569	CheckComRCReturnRC (autoCaller.rc());
1570
1571	AutoReadLock alock (this);
1572
1573	mData->mSettingsFileVersion.cloneTo (aSettingsFileVersion);
1574	return S_OK;
1575	}
1576
1577	STDMETHODIMP Machine::COMGETTER(SettingsModified) (BOOL *aModified)
1578	{
1579	CheckComArgOutPointerValid (aModified);
1580
1581	AutoCaller autoCaller (this);
1582	CheckComRCReturnRC (autoCaller.rc());
1583
1584	AutoWriteLock alock (this);
1585
1586	HRESULT rc = checkStateDependency (MutableStateDep);
1587	CheckComRCReturnRC (rc);
1588
1589	if (!isConfigLocked())
1590	{
1591	/*
1592	* if we're ready and isConfigLocked() is FALSE then it means
1593	* that no config file exists yet, so always return TRUE
1594	*/
1595	*aModified = TRUE;
1596	}
1597	else
1598	{
1599	*aModified = isModified();
1600	}
1601
1602	return S_OK;
1603	}
1604
1605	STDMETHODIMP Machine::COMGETTER(SessionState) (SessionState_T *aSessionState)
1606	{
1607	CheckComArgOutPointerValid (aSessionState);
1608
1609	AutoCaller autoCaller (this);
1610	CheckComRCReturnRC (autoCaller.rc());
1611
1612	AutoReadLock alock (this);
1613
1614	*aSessionState = mData->mSession.mState;
1615
1616	return S_OK;
1617	}
1618
1619	STDMETHODIMP Machine::COMGETTER(SessionType) (BSTR *aSessionType)
1620	{
1621	CheckComArgOutPointerValid (aSessionType);
1622
1623	AutoCaller autoCaller (this);
1624	CheckComRCReturnRC (autoCaller.rc());
1625
1626	AutoReadLock alock (this);
1627
1628	mData->mSession.mType.cloneTo (aSessionType);
1629
1630	return S_OK;
1631	}
1632
1633	STDMETHODIMP Machine::COMGETTER(SessionPid) (ULONG *aSessionPid)
1634	{
1635	CheckComArgOutPointerValid (aSessionPid);
1636
1637	AutoCaller autoCaller (this);
1638	CheckComRCReturnRC (autoCaller.rc());
1639
1640	AutoReadLock alock (this);
1641
1642	*aSessionPid = mData->mSession.mPid;
1643
1644	return S_OK;
1645	}
1646
1647	STDMETHODIMP Machine::COMGETTER(State) (MachineState_T *machineState)
1648	{
1649	if (!machineState)
1650	return E_POINTER;
1651
1652	AutoCaller autoCaller (this);
1653	CheckComRCReturnRC (autoCaller.rc());
1654
1655	AutoReadLock alock (this);
1656
1657	*machineState = mData->mMachineState;
1658
1659	return S_OK;
1660	}
1661
1662	STDMETHODIMP Machine::COMGETTER(LastStateChange) (LONG64 *aLastStateChange)
1663	{
1664	CheckComArgOutPointerValid (aLastStateChange);
1665
1666	AutoCaller autoCaller (this);
1667	CheckComRCReturnRC (autoCaller.rc());
1668
1669	AutoReadLock alock (this);
1670
1671	*aLastStateChange = RTTimeSpecGetMilli (&mData->mLastStateChange);
1672
1673	return S_OK;
1674	}
1675
1676	STDMETHODIMP Machine::COMGETTER(StateFilePath) (BSTR *aStateFilePath)
1677	{
1678	CheckComArgOutPointerValid (aStateFilePath);
1679
1680	AutoCaller autoCaller (this);
1681	CheckComRCReturnRC (autoCaller.rc());
1682
1683	AutoReadLock alock (this);
1684
1685	mSSData->mStateFilePath.cloneTo (aStateFilePath);
1686
1687	return S_OK;
1688	}
1689
1690	STDMETHODIMP Machine::COMGETTER(LogFolder) (BSTR *aLogFolder)
1691	{
1692	CheckComArgOutPointerValid (aLogFolder);
1693
1694	AutoCaller autoCaller (this);
1695	AssertComRCReturnRC (autoCaller.rc());
1696
1697	AutoReadLock alock (this);
1698
1699	Utf8Str logFolder;
1700	getLogFolder (logFolder);
1701
1702	Bstr (logFolder).cloneTo (aLogFolder);
1703
1704	return S_OK;
1705	}
1706
1707	STDMETHODIMP Machine::COMGETTER(CurrentSnapshot) (ISnapshot **aCurrentSnapshot)
1708	{
1709	CheckComArgOutPointerValid (aCurrentSnapshot);
1710
1711	AutoCaller autoCaller (this);
1712	CheckComRCReturnRC (autoCaller.rc());
1713
1714	AutoReadLock alock (this);
1715
1716	mData->mCurrentSnapshot.queryInterfaceTo (aCurrentSnapshot);
1717
1718	return S_OK;
1719	}
1720
1721	STDMETHODIMP Machine::COMGETTER(SnapshotCount) (ULONG *aSnapshotCount)
1722	{
1723	CheckComArgOutPointerValid (aSnapshotCount);
1724
1725	AutoCaller autoCaller (this);
1726	CheckComRCReturnRC (autoCaller.rc());
1727
1728	AutoReadLock alock (this);
1729
1730	*aSnapshotCount = !mData->mFirstSnapshot ? 0 :
1731	mData->mFirstSnapshot->descendantCount() + 1 /* self */;
1732
1733	return S_OK;
1734	}
1735
1736	STDMETHODIMP Machine::COMGETTER(CurrentStateModified) (BOOL *aCurrentStateModified)
1737	{
1738	CheckComArgOutPointerValid (aCurrentStateModified);
1739
1740	AutoCaller autoCaller (this);
1741	CheckComRCReturnRC (autoCaller.rc());
1742
1743	AutoReadLock alock (this);
1744
1745	/* Note: for machines with no snapshots, we always return FALSE
1746	* (mData->mCurrentStateModified will be TRUE in this case, for historical
1747	* reasons :) */
1748
1749	*aCurrentStateModified = !mData->mFirstSnapshot ? FALSE :
1750	mData->mCurrentStateModified;
1751
1752	return S_OK;
1753	}
1754
1755	STDMETHODIMP
1756	Machine::COMGETTER(SharedFolders) (ISharedFolderCollection **aSharedFolders)
1757	{
1758	CheckComArgOutPointerValid (aSharedFolders);
1759
1760	AutoCaller autoCaller (this);
1761	CheckComRCReturnRC (autoCaller.rc());
1762
1763	AutoReadLock alock (this);
1764
1765	ComObjPtr <SharedFolderCollection> coll;
1766	coll.createObject();
1767	coll->init (mHWData->mSharedFolders);
1768	coll.queryInterfaceTo (aSharedFolders);
1769
1770	return S_OK;
1771	}
1772
1773	STDMETHODIMP
1774	Machine::COMGETTER(ClipboardMode) (ClipboardMode_T *aClipboardMode)
1775	{
1776	CheckComArgOutPointerValid (aClipboardMode);
1777
1778	AutoCaller autoCaller (this);
1779	CheckComRCReturnRC (autoCaller.rc());
1780
1781	AutoReadLock alock (this);
1782
1783	*aClipboardMode = mHWData->mClipboardMode;
1784
1785	return S_OK;
1786	}
1787
1788	STDMETHODIMP
1789	Machine::COMSETTER(ClipboardMode) (ClipboardMode_T aClipboardMode)
1790	{
1791	AutoCaller autoCaller (this);
1792	CheckComRCReturnRC (autoCaller.rc());
1793
1794	AutoWriteLock alock (this);
1795
1796	HRESULT rc = checkStateDependency (MutableStateDep);
1797	CheckComRCReturnRC (rc);
1798
1799	mHWData.backup();
1800	mHWData->mClipboardMode = aClipboardMode;
1801
1802	return S_OK;
1803	}
1804
1805	STDMETHODIMP
1806	Machine::COMGETTER(GuestPropertyNotificationPatterns) (BSTR *aPatterns)
1807	{
1808	CheckComArgOutPointerValid (aPatterns);
1809
1810	AutoCaller autoCaller (this);
1811	CheckComRCReturnRC (autoCaller.rc());
1812
1813	AutoReadLock alock (this);
1814
1815	mHWData->mGuestPropertyNotificationPatterns.cloneTo (aPatterns);
1816
1817	return RT_LIKELY (aPatterns != NULL) ? S_OK : E_OUTOFMEMORY;
1818	}
1819
1820	STDMETHODIMP
1821	Machine::COMSETTER(GuestPropertyNotificationPatterns) (IN_BSTR aPatterns)
1822	{
1823	AssertLogRelReturn (VALID_PTR (aPatterns), E_POINTER);
1824	AutoCaller autoCaller (this);
1825	CheckComRCReturnRC (autoCaller.rc());
1826
1827	AutoWriteLock alock (this);
1828
1829	HRESULT rc = checkStateDependency (MutableStateDep);
1830	CheckComRCReturnRC (rc);
1831
1832	mHWData.backup();
1833	mHWData->mGuestPropertyNotificationPatterns = aPatterns;
1834
1835	return RT_LIKELY (!mHWData->mGuestPropertyNotificationPatterns.isNull())
1836	? S_OK : E_OUTOFMEMORY;
1837	}
1838
1839	// IMachine methods
1840	/////////////////////////////////////////////////////////////////////////////
1841
1842	STDMETHODIMP Machine::SetBootOrder (ULONG aPosition, DeviceType_T aDevice)
1843	{
1844	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1845	return setError (E_INVALIDARG,
1846	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1847	aPosition, SchemaDefs::MaxBootPosition);
1848
1849	if (aDevice == DeviceType_USB)
1850	return setError (E_NOTIMPL,
1851	tr ("Booting from USB device is currently not supported"));
1852
1853	AutoCaller autoCaller (this);
1854	CheckComRCReturnRC (autoCaller.rc());
1855
1856	AutoWriteLock alock (this);
1857
1858	HRESULT rc = checkStateDependency (MutableStateDep);
1859	CheckComRCReturnRC (rc);
1860
1861	mHWData.backup();
1862	mHWData->mBootOrder [aPosition - 1] = aDevice;
1863
1864	return S_OK;
1865	}
1866
1867	STDMETHODIMP Machine::GetBootOrder (ULONG aPosition, DeviceType_T *aDevice)
1868	{
1869	if (aPosition < 1 \|\| aPosition > SchemaDefs::MaxBootPosition)
1870	return setError (E_INVALIDARG,
1871	tr ("Invalid boot position: %lu (must be in range [1, %lu])"),
1872	aPosition, SchemaDefs::MaxBootPosition);
1873
1874	AutoCaller autoCaller (this);
1875	CheckComRCReturnRC (autoCaller.rc());
1876
1877	AutoReadLock alock (this);
1878
1879	*aDevice = mHWData->mBootOrder [aPosition - 1];
1880
1881	return S_OK;
1882	}
1883
1884	STDMETHODIMP Machine::AttachHardDisk2 (IN_GUID aId,
1885	StorageBus_T aBus, LONG aChannel,
1886	LONG aDevice)
1887	{
1888	if (aBus == StorageBus_SATA)
1889	{
1890	/* The device property is not used for SATA yet. Thus it is always zero. */
1891	if (aDevice != 0)
1892	return setError (E_INVALIDARG,
1893	tr ("Invalid SATA device slot: %l (must be always 0)"),
1894	aDevice);
1895
1896	/* We suport 30 ports, starting from 0 */
1897	/// @todo: r=aeichner make max port count a system property
1898	if (aChannel < 0 \|\| aChannel > 29)
1899	return setError (E_INVALIDARG,
1900	tr ("Invalid SATA channel number: %l (must be in range "
1901	"[0, 29])"),
1902	aChannel);
1903	}
1904	else if (aBus == StorageBus_IDE)
1905	{
1906	if (aChannel < 0 \|\| aChannel > 1)
1907	return setError (E_INVALIDARG,
1908	tr ("Invalid IDE channel: %l (must be in range [0, 1])"),
1909	aChannel);
1910
1911	if (aChannel == 0)
1912	{
1913	if (aDevice < 0 \|\| aDevice > 1)
1914	return setError (E_INVALIDARG,
1915	tr ("Invalid IDE device slot: %l (must be in range "
1916	"[0, 1] for channel 0)"),
1917	aDevice);
1918	}
1919	else
1920	if (aChannel == 1)
1921	{
1922	/* Device slot 0 is reserved for the CD/DVD drive. */
1923	if (aDevice != 1)
1924	return setError (E_INVALIDARG,
1925	tr ("Invalid IDE device slot: %l (must be "
1926	"1 for channel 1)"),
1927	aDevice);
1928	}
1929	}
1930	else
1931	return E_INVALIDARG;
1932
1933	AutoCaller autoCaller (this);
1934	CheckComRCReturnRC (autoCaller.rc());
1935
1936	/* VirtualBox::findHardDisk2() need read lock; also we want to make sure the
1937	* hard disk object we pick up doesn't get unregistered before we finish. */
1938	AutoReadLock vboxLock (mParent);
1939	AutoWriteLock alock (this);
1940
1941	HRESULT rc = checkStateDependency (MutableStateDep);
1942	CheckComRCReturnRC (rc);
1943
1944	/// @todo NEWMEDIA implicit machine registration
1945	if (!mData->mRegistered)
1946	return setError (VBOX_E_INVALID_OBJECT_STATE,
1947	tr ("Cannot attach hard disks to an unregistered machine"));
1948
1949	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
1950
1951	if (Global::IsOnlineOrTransient (mData->mMachineState))
1952	return setError (VBOX_E_INVALID_VM_STATE,
1953	tr ("Invalid machine state: %d"), mData->mMachineState);
1954
1955	/* check if the device slot is already busy */
1956	HDData::AttachmentList::const_iterator it =
1957	std::find_if (mHDData->mAttachments.begin(),
1958	mHDData->mAttachments.end(),
1959	HardDisk2Attachment::EqualsTo (aBus, aChannel, aDevice));
1960
1961	if (it != mHDData->mAttachments.end())
1962	{
1963	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
1964	AutoReadLock hdLock (hd);
1965	return setError (VBOX_E_OBJECT_IN_USE,
1966	tr ("Hard disk '%ls' is already attached to device slot %d on "
1967	"channel %d of bus %d of this virtual machine"),
1968	hd->locationFull().raw(), aDevice, aChannel, aBus);
1969	}
1970
1971	Guid id = aId;
1972
1973	/* find a hard disk by UUID */
1974	ComObjPtr <HardDisk2> hd;
1975	rc = mParent->findHardDisk2 (&id, NULL, true /* aSetError */, &hd);
1976	CheckComRCReturnRC (rc);
1977
1978	AutoCaller hdCaller (hd);
1979	CheckComRCReturnRC (hdCaller.rc());
1980
1981	AutoWriteLock hdLock (hd);
1982
1983	if (std::find_if (mHDData->mAttachments.begin(),
1984	mHDData->mAttachments.end(),
1985	HardDisk2Attachment::RefersTo (hd)) !=
1986	mHDData->mAttachments.end())
1987	{
1988	return setError (VBOX_E_OBJECT_IN_USE,
1989	tr ("Hard disk '%ls' is already attached to this virtual machine"),
1990	hd->locationFull().raw());
1991	}
1992
1993	bool indirect = hd->isReadOnly();
1994	bool associate = true;
1995
1996	do
1997	{
1998	if (mHDData.isBackedUp())
1999	{
2000	const HDData::AttachmentList &oldAtts =
2001	mHDData.backedUpData()->mAttachments;
2002
2003	/* check if the hard disk was attached to the VM before we started
2004	* changing attachemnts in which case the attachment just needs to
2005	* be restored */
2006	HDData::AttachmentList::const_iterator it =
2007	std::find_if (oldAtts.begin(), oldAtts.end(),
2008	HardDisk2Attachment::RefersTo (hd));
2009	if (it != oldAtts.end())
2010	{
2011	AssertReturn (!indirect, E_FAIL);
2012
2013	/* see if it's the same bus/channel/device */
2014	if ((*it)->device() == aDevice &&
2015	(*it)->channel() == aChannel &&
2016	(*it)->bus() == aBus)
2017	{
2018	/* the simplest case: restore the whole attachment
2019	* and return, nothing else to do */
2020	mHDData->mAttachments.push_back (*it);
2021	return S_OK;
2022	}
2023
2024	/* bus/channel/device differ; we need a new attachment object,
2025	* but don't try to associate it again */
2026	associate = false;
2027	break;
2028	}
2029	}
2030
2031	/* go further only if the attachment is to be indirect */
2032	if (!indirect)
2033	break;
2034
2035	/* perform the so called smart attachment logic for indirect
2036	* attachments. Note that smart attachment is only applicable to base
2037	* hard disks. */
2038
2039	if (hd->parent().isNull())
2040	{
2041	/* first, investigate the backup copy of the current hard disk
2042	* attachments to make it possible to re-attach existing diffs to
2043	* another device slot w/o losing their contents */
2044	if (mHDData.isBackedUp())
2045	{
2046	const HDData::AttachmentList &oldAtts =
2047	mHDData.backedUpData()->mAttachments;
2048
2049	HDData::AttachmentList::const_iterator foundIt = oldAtts.end();
2050	uint32_t foundLevel = 0;
2051
2052	for (HDData::AttachmentList::const_iterator
2053	it = oldAtts.begin(); it != oldAtts.end(); ++ it)
2054	{
2055	uint32_t level = 0;
2056	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2057	{
2058	/* skip the hard disk if its currently attached (we
2059	* cannot attach the same hard disk twice) */
2060	if (std::find_if (mHDData->mAttachments.begin(),
2061	mHDData->mAttachments.end(),
2062	HardDisk2Attachment::RefersTo (
2063	(*it)->hardDisk())) !=
2064	mHDData->mAttachments.end())
2065	continue;
2066
2067	/* matched device, channel and bus (i.e. attached to the
2068	* same place) will win and immediately stop the search;
2069	* otherwise the attachment that has the youngest
2070	* descendant of hd will be used
2071	*/
2072	if ((*it)->device() == aDevice &&
2073	(*it)->channel() == aChannel &&
2074	(*it)->bus() == aBus)
2075	{
2076	/* the simplest case: restore the whole attachment
2077	* and return, nothing else to do */
2078	mHDData->mAttachments.push_back (*it);
2079	return S_OK;
2080	}
2081	else
2082	if (foundIt == oldAtts.end() \|\|
2083	level > foundLevel /* prefer younger */)
2084	{
2085	foundIt = it;
2086	foundLevel = level;
2087	}
2088	}
2089	}
2090
2091	if (foundIt != oldAtts.end())
2092	{
2093	/* use the previously attached hard disk */
2094	hd = (*foundIt)->hardDisk();
2095	hdCaller.attach (hd);
2096	CheckComRCReturnRC (hdCaller.rc());
2097	hdLock.attach (hd);
2098	/* not implicit, doesn't require association with this VM */
2099	indirect = false;
2100	associate = false;
2101	/* go right to the HardDisk2Attachment creation */
2102	break;
2103	}
2104	}
2105
2106	/* then, search through snapshots for the best diff in the given
2107	* hard disk's chain to base the new diff on */
2108
2109	ComObjPtr <HardDisk2> base;
2110	ComObjPtr <Snapshot> snap = mData->mCurrentSnapshot;
2111	while (snap)
2112	{
2113	AutoReadLock snapLock (snap);
2114
2115	const HDData::AttachmentList &snapAtts =
2116	snap->data().mMachine->mHDData->mAttachments;
2117
2118	HDData::AttachmentList::const_iterator foundIt = snapAtts.end();
2119	uint32_t foundLevel = 0;
2120
2121	for (HDData::AttachmentList::const_iterator
2122	it = snapAtts.begin(); it != snapAtts.end(); ++ it)
2123	{
2124	uint32_t level = 0;
2125	if ((*it)->hardDisk()->root (&level).equalsTo (hd))
2126	{
2127	/* matched device, channel and bus (i.e. attached to the
2128	* same place) will win and immediately stop the search;
2129	* otherwise the attachment that has the youngest
2130	* descendant of hd will be used
2131	*/
2132	if ((*it)->device() == aDevice &&
2133	(*it)->channel() == aChannel &&
2134	(*it)->bus() == aBus)
2135	{
2136	foundIt = it;
2137	break;
2138	}
2139	else
2140	if (foundIt == snapAtts.end() \|\|
2141	level > foundLevel /* prefer younger */)
2142	{
2143	foundIt = it;
2144	foundLevel = level;
2145	}
2146	}
2147	}
2148
2149	if (foundIt != snapAtts.end())
2150	{
2151	base = (*foundIt)->hardDisk();
2152	break;
2153	}
2154
2155	snap = snap->parent();
2156	}
2157
2158	/* found a suitable diff, use it as a base */
2159	if (!base.isNull())
2160	{
2161	hd = base;
2162	hdCaller.attach (hd);
2163	CheckComRCReturnRC (hdCaller.rc());
2164	hdLock.attach (hd);
2165	}
2166	}
2167
2168	ComObjPtr <HardDisk2> diff;
2169	diff.createObject();
2170	rc = diff->init (mParent, hd->preferredDiffFormat(),
2171	BstrFmt ("%ls"RTPATH_SLASH_STR,
2172	mUserData->mSnapshotFolderFull.raw()));
2173	CheckComRCReturnRC (rc);
2174
2175	/* make sure the hard disk is not modified before createDiffStorage() */
2176	rc = hd->LockRead (NULL);
2177	CheckComRCReturnRC (rc);
2178
2179	/* will leave the lock before the potentially lengthy operation, so
2180	* protect with the special state */
2181	MachineState_T oldState = mData->mMachineState;
2182	setMachineState (MachineState_SettingUp);
2183
2184	hdLock.leave();
2185	alock.leave();
2186	vboxLock.unlock();
2187
2188	rc = hd->createDiffStorageAndWait (diff);
2189
2190	alock.enter();
2191	hdLock.enter();
2192
2193	setMachineState (oldState);
2194
2195	hd->UnlockRead (NULL);
2196
2197	CheckComRCReturnRC (rc);
2198
2199	/* use the created diff for the actual attachment */
2200	hd = diff;
2201	hdCaller.attach (hd);
2202	CheckComRCReturnRC (hdCaller.rc());
2203	hdLock.attach (hd);
2204	}
2205	while (0);
2206
2207	ComObjPtr <HardDisk2Attachment> attachment;
2208	attachment.createObject();
2209	rc = attachment->init (hd, aBus, aChannel, aDevice, indirect);
2210	CheckComRCReturnRC (rc);
2211
2212	if (associate)
2213	{
2214	/* as the last step, associate the hard disk to the VM */
2215	rc = hd->attachTo (mData->mUuid);
2216	/* here we can fail because of Deleting, or being in process of
2217	* creating a Diff */
2218	CheckComRCReturnRC (rc);
2219	}
2220
2221	/* sucsess: finally remember the attachment */
2222	mHDData.backup();
2223	mHDData->mAttachments.push_back (attachment);
2224
2225	return rc;
2226	}
2227
2228	STDMETHODIMP Machine::GetHardDisk2 (StorageBus_T aBus, LONG aChannel,
2229	LONG aDevice, IHardDisk2 **aHardDisk)
2230	{
2231	CheckComArgExpr (aBus, aBus != StorageBus_Null);
2232	CheckComArgOutPointerValid (aHardDisk);
2233
2234	AutoCaller autoCaller (this);
2235	CheckComRCReturnRC (autoCaller.rc());
2236
2237	AutoReadLock alock (this);
2238
2239	*aHardDisk = NULL;
2240
2241	HDData::AttachmentList::const_iterator it =
2242	std::find_if (mHDData->mAttachments.begin(),
2243	mHDData->mAttachments.end(),
2244	HardDisk2Attachment::EqualsTo (aBus, aChannel, aDevice));
2245
2246	if (it == mHDData->mAttachments.end())
2247	return setError (VBOX_E_OBJECT_NOT_FOUND,
2248	tr ("No hard disk attached to device slot %d on channel %d of bus %d"),
2249	aDevice, aChannel, aBus);
2250
2251	(*it)->hardDisk().queryInterfaceTo (aHardDisk);
2252
2253	return S_OK;
2254	}
2255
2256	STDMETHODIMP Machine::DetachHardDisk2 (StorageBus_T aBus, LONG aChannel,
2257	LONG aDevice)
2258	{
2259	CheckComArgExpr (aBus, aBus != StorageBus_Null);
2260
2261	AutoCaller autoCaller (this);
2262	CheckComRCReturnRC (autoCaller.rc());
2263
2264	AutoWriteLock alock (this);
2265
2266	HRESULT rc = checkStateDependency (MutableStateDep);
2267	CheckComRCReturnRC (rc);
2268
2269	AssertReturn (mData->mMachineState != MachineState_Saved, E_FAIL);
2270
2271	if (Global::IsOnlineOrTransient (mData->mMachineState))
2272	return setError (VBOX_E_INVALID_VM_STATE,
2273	tr ("Invalid machine state: %d"), mData->mMachineState);
2274
2275	HDData::AttachmentList::const_iterator it =
2276	std::find_if (mHDData->mAttachments.begin(),
2277	mHDData->mAttachments.end(),
2278	HardDisk2Attachment::EqualsTo (aBus, aChannel, aDevice));
2279
2280	if (it == mHDData->mAttachments.end())
2281	return setError (VBOX_E_OBJECT_NOT_FOUND,
2282	tr ("No hard disk attached to device slot %d on channel %d of bus %d"),
2283	aDevice, aChannel, aBus);
2284
2285	ComObjPtr <HardDisk2Attachment> hda = *it;
2286	ComObjPtr <HardDisk2> hd = hda->hardDisk();
2287
2288	if (hda->isImplicit())
2289	{
2290	/* attempt to implicitly delete the implicitly created diff */
2291
2292	/// @todo move the implicit flag from HardDisk2Attachment to HardDisk2
2293	/// and forbid any hard disk operation when it is implicit. Or maybe
2294	/// a special media state for it to make it even more simple.
2295
2296	Assert (mHDData.isBackedUp());
2297
2298	/* will leave the lock before the potentially lengthy operation, so
2299	* protect with the special state */
2300	MachineState_T oldState = mData->mMachineState;
2301	setMachineState (MachineState_SettingUp);
2302
2303	alock.leave();
2304
2305	rc = hd->deleteStorageAndWait();
2306
2307	alock.enter();
2308
2309	setMachineState (oldState);
2310
2311	CheckComRCReturnRC (rc);
2312	}
2313
2314	mHDData.backup();
2315
2316	/* we cannot use erase (it) below because backup() above will create
2317	* a copy of the list and make this copy active, but the iterator
2318	* still refers to the original and is not valid for the copy */
2319	mHDData->mAttachments.remove (hda);
2320
2321	return S_OK;
2322	}
2323
2324	STDMETHODIMP Machine::GetSerialPort (ULONG slot, ISerialPort **port)
2325	{
2326	CheckComArgOutPointerValid (port);
2327	CheckComArgExpr (slot, slot < RT_ELEMENTS (mSerialPorts));
2328
2329	AutoCaller autoCaller (this);
2330	CheckComRCReturnRC (autoCaller.rc());
2331
2332	AutoReadLock alock (this);
2333
2334	mSerialPorts [slot].queryInterfaceTo (port);
2335
2336	return S_OK;
2337	}
2338
2339	STDMETHODIMP Machine::GetParallelPort (ULONG slot, IParallelPort **port)
2340	{
2341	CheckComArgOutPointerValid (port);
2342	CheckComArgExpr (slot, slot < RT_ELEMENTS (mParallelPorts));
2343
2344	AutoCaller autoCaller (this);
2345	CheckComRCReturnRC (autoCaller.rc());
2346
2347	AutoReadLock alock (this);
2348
2349	mParallelPorts [slot].queryInterfaceTo (port);
2350
2351	return S_OK;
2352	}
2353
2354	STDMETHODIMP Machine::GetNetworkAdapter (ULONG slot, INetworkAdapter **adapter)
2355	{
2356	CheckComArgOutPointerValid (adapter);
2357	CheckComArgExpr (slot, slot < RT_ELEMENTS (mNetworkAdapters));
2358
2359	AutoCaller autoCaller (this);
2360	CheckComRCReturnRC (autoCaller.rc());
2361
2362	AutoReadLock alock (this);
2363
2364	mNetworkAdapters [slot].queryInterfaceTo (adapter);
2365
2366	return S_OK;
2367	}
2368
2369	/**
2370	* @note Locks this object for reading.
2371	*/
2372	STDMETHODIMP Machine::GetNextExtraDataKey (IN_BSTR aKey, BSTR aNextKey, BSTR aNextValue)
2373	{
2374	CheckComArgOutPointerValid (aNextKey);
2375
2376	AutoCaller autoCaller (this);
2377	CheckComRCReturnRC (autoCaller.rc());
2378
2379	/* serialize file access (prevent writes) */
2380	AutoReadLock alock (this);
2381
2382	/* start with nothing found */
2383	*aNextKey = NULL;
2384	if (aNextValue)
2385	*aNextValue = NULL;
2386
2387	/* if we're ready and isConfigLocked() is FALSE then it means
2388	* that no config file exists yet, so return shortly */
2389	if (!isConfigLocked())
2390	return S_OK;
2391
2392	HRESULT rc = S_OK;
2393
2394	try
2395	{
2396	using namespace settings;
2397	using namespace xml;
2398
2399	/* load the settings file (we don't reuse the existing handle but
2400	* request a new one to allow for concurrent multithreaded reads) */
2401	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2402	XmlTreeBackend tree;
2403
2404	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2405	CheckComRCReturnRC (rc);
2406
2407	Key machineNode = tree.rootKey().key ("Machine");
2408	Key extraDataNode = machineNode.findKey ("ExtraData");
2409
2410	if (!extraDataNode.isNull())
2411	{
2412	Key::List items = extraDataNode.keys ("ExtraDataItem");
2413	if (items.size())
2414	{
2415	for (Key::List::const_iterator it = items.begin();
2416	it != items.end(); ++ it)
2417	{
2418	Bstr key = (*it).stringValue ("name");
2419
2420	/* if we're supposed to return the first one */
2421	if (aKey == NULL)
2422	{
2423	key.cloneTo (aNextKey);
2424	if (aNextValue)
2425	{
2426	Bstr val = (*it).stringValue ("value");
2427	val.cloneTo (aNextValue);
2428	}
2429	return S_OK;
2430	}
2431
2432	/* did we find the key we're looking for? */
2433	if (key == aKey)
2434	{
2435	++ it;
2436	/* is there another item? */
2437	if (it != items.end())
2438	{
2439	Bstr key = (*it).stringValue ("name");
2440	key.cloneTo (aNextKey);
2441	if (aNextValue)
2442	{
2443	Bstr val = (*it).stringValue ("value");
2444	val.cloneTo (aNextValue);
2445	}
2446	}
2447	/* else it's the last one, arguments are already NULL */
2448	return S_OK;
2449	}
2450	}
2451	}
2452	}
2453
2454	/* Here we are when a) there are no items at all or b) there are items
2455	* but none of them equals the requested non-NULL key. b) is an
2456	* error as well as a) if the key is non-NULL. When the key is NULL
2457	* (which is the case only when there are no items), we just fall
2458	* through to return NULLs and S_OK. */
2459
2460	if (aKey != NULL)
2461	return setError (VBOX_E_OBJECT_NOT_FOUND,
2462	tr ("Could not find the extra data key '%ls'"), aKey);
2463	}
2464	catch (...)
2465	{
2466	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2467	}
2468
2469	return rc;
2470	}
2471
2472	/**
2473	* @note Locks this object for reading.
2474	*/
2475	STDMETHODIMP Machine::GetExtraData (IN_BSTR aKey, BSTR *aValue)
2476	{
2477	CheckComArgNotNull (aKey);
2478	CheckComArgOutPointerValid (aValue);
2479
2480	AutoCaller autoCaller (this);
2481	CheckComRCReturnRC (autoCaller.rc());
2482
2483	/* serialize file access (prevent writes) */
2484	AutoReadLock alock (this);
2485
2486	/* start with nothing found */
2487	*aValue = NULL;
2488
2489	/* if we're ready and isConfigLocked() is FALSE then it means
2490	* that no config file exists yet, so return shortly */
2491	if (!isConfigLocked())
2492	return S_OK;
2493
2494	HRESULT rc = S_OK;
2495
2496	try
2497	{
2498	using namespace settings;
2499	using namespace xml;
2500
2501	/* load the settings file (we don't reuse the existing handle but
2502	* request a new one to allow for concurrent multithreaded reads) */
2503	File file (File::Mode_Read, Utf8Str (mData->mConfigFileFull));
2504	XmlTreeBackend tree;
2505
2506	rc = VirtualBox::loadSettingsTree_Again (tree, file);
2507	CheckComRCReturnRC (rc);
2508
2509	const Utf8Str key = aKey;
2510
2511	Key machineNode = tree.rootKey().key ("Machine");
2512	Key extraDataNode = machineNode.findKey ("ExtraData");
2513
2514	if (!extraDataNode.isNull())
2515	{
2516	/* check if the key exists */
2517	Key::List items = extraDataNode.keys ("ExtraDataItem");
2518	for (Key::List::const_iterator it = items.begin();
2519	it != items.end(); ++ it)
2520	{
2521	if (key == (*it).stringValue ("name"))
2522	{
2523	Bstr val = (*it).stringValue ("value");
2524	val.cloneTo (aValue);
2525	break;
2526	}
2527	}
2528	}
2529	}
2530	catch (...)
2531	{
2532	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2533	}
2534
2535	return rc;
2536	}
2537
2538	/**
2539	* @note Locks mParent for writing + this object for writing.
2540	*/
2541	STDMETHODIMP Machine::SetExtraData (IN_BSTR aKey, IN_BSTR aValue)
2542	{
2543	CheckComArgNotNull (aKey);
2544
2545	AutoCaller autoCaller (this);
2546	CheckComRCReturnRC (autoCaller.rc());
2547
2548	/* VirtualBox::onExtraDataCanChange() and saveSettings() need mParent
2549	* lock (saveSettings() needs a write one). This object's write lock is
2550	* also necessary to serialize file access (prevent concurrent reads and
2551	* writes). */
2552	AutoMultiWriteLock2 alock (mParent, this);
2553
2554	if (mType == IsSnapshotMachine)
2555	{
2556	HRESULT rc = checkStateDependency (MutableStateDep);
2557	CheckComRCReturnRC (rc);
2558	}
2559
2560	bool changed = false;
2561	HRESULT rc = S_OK;
2562
2563	/* If we're ready and isConfigLocked() is FALSE then it means that no
2564	* config file exists yet, so call saveSettings() to create one. */
2565	if (!isConfigLocked())
2566	{
2567	rc = saveSettings();
2568	CheckComRCReturnRC (rc);
2569	}
2570
2571	try
2572	{
2573	using namespace settings;
2574	using namespace xml;
2575
2576	/* load the settings file */
2577	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
2578	XmlTreeBackend tree;
2579
2580	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
2581	CheckComRCReturnRC (rc);
2582
2583	const Utf8Str key = aKey;
2584	Bstr oldVal;
2585
2586	Key machineNode = tree.rootKey().key ("Machine");
2587	Key extraDataNode = machineNode.createKey ("ExtraData");
2588	Key extraDataItemNode;
2589
2590	Key::List items = extraDataNode.keys ("ExtraDataItem");
2591	for (Key::List::const_iterator it = items.begin();
2592	it != items.end(); ++ it)
2593	{
2594	if (key == (*it).stringValue ("name"))
2595	{
2596	extraDataItemNode = *it;
2597	oldVal = (*it).stringValue ("value");
2598	break;
2599	}
2600	}
2601
2602	/* When no key is found, oldVal is null */
2603	changed = oldVal != aValue;
2604
2605	if (changed)
2606	{
2607	/* ask for permission from all listeners */
2608	Bstr error;
2609	if (!mParent->onExtraDataCanChange (mData->mUuid, aKey, aValue, error))
2610	{
2611	const char *sep = error.isEmpty() ? "" : ": ";
2612	CBSTR err = error.isNull() ? (CBSTR) L"" : error.raw();
2613	LogWarningFunc (("Someone vetoed! Change refused%s%ls\n",
2614	sep, err));
2615	return setError (E_ACCESSDENIED,
2616	tr ("Could not set extra data because someone refused "
2617	"the requested change of '%ls' to '%ls'%s%ls"),
2618	aKey, aValue, sep, err);
2619	}
2620
2621	if (aValue != NULL)
2622	{
2623	if (extraDataItemNode.isNull())
2624	{
2625	extraDataItemNode = extraDataNode.appendKey ("ExtraDataItem");
2626	extraDataItemNode.setStringValue ("name", key);
2627	}
2628	extraDataItemNode.setStringValue ("value", Utf8Str (aValue));
2629	}
2630	else
2631	{
2632	/* an old value does for sure exist here (XML schema
2633	* guarantees that "value" may not absent in the
2634	* <ExtraDataItem> element) */
2635	Assert (!extraDataItemNode.isNull());
2636	extraDataItemNode.zap();
2637	}
2638
2639	/* save settings on success */
2640	rc = VirtualBox::saveSettingsTree (tree, file,
2641	mData->mSettingsFileVersion);
2642	CheckComRCReturnRC (rc);
2643	}
2644	}
2645	catch (...)
2646	{
2647	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
2648	}
2649
2650	/* fire a notification */
2651	if (SUCCEEDED (rc) && changed)
2652	mParent->onExtraDataChange (mData->mUuid, aKey, aValue);
2653
2654	return rc;
2655	}
2656
2657	STDMETHODIMP Machine::SaveSettings()
2658	{
2659	AutoCaller autoCaller (this);
2660	CheckComRCReturnRC (autoCaller.rc());
2661
2662	/* saveSettings() needs mParent lock */
2663	AutoMultiWriteLock2 alock (mParent, this);
2664
2665	/* when there was auto-conversion, we want to save the file even if
2666	* the VM is saved */
2667	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2668	MutableOrSavedStateDep : MutableStateDep;
2669
2670	HRESULT rc = checkStateDependency (dep);
2671	CheckComRCReturnRC (rc);
2672
2673	/* the settings file path may never be null */
2674	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2675
2676	/* save all VM data excluding snapshots */
2677	return saveSettings();
2678	}
2679
2680	STDMETHODIMP Machine::SaveSettingsWithBackup (BSTR *aBakFileName)
2681	{
2682	CheckComArgOutPointerValid (aBakFileName);
2683
2684	AutoCaller autoCaller (this);
2685	CheckComRCReturnRC (autoCaller.rc());
2686
2687	/* saveSettings() needs mParent lock */
2688	AutoMultiWriteLock2 alock (mParent, this);
2689
2690	/* when there was auto-conversion, we want to save the file even if
2691	* the VM is saved */
2692	StateDependency dep = mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL ?
2693	MutableOrSavedStateDep : MutableStateDep;
2694
2695	HRESULT rc = checkStateDependency (dep);
2696	CheckComRCReturnRC (rc);
2697
2698	/* the settings file path may never be null */
2699	ComAssertRet (mData->mConfigFileFull, E_FAIL);
2700
2701	/* perform backup only when there was auto-conversion */
2702	if (mData->mSettingsFileVersion != VBOX_XML_VERSION_FULL)
2703	{
2704	Bstr bakFileName;
2705
2706	HRESULT rc = VirtualBox::backupSettingsFile (mData->mConfigFileFull,
2707	mData->mSettingsFileVersion,
2708	bakFileName);
2709	CheckComRCReturnRC (rc);
2710
2711	bakFileName.cloneTo (aBakFileName);
2712	}
2713
2714	/* save all VM data excluding snapshots */
2715	return saveSettings();
2716	}
2717
2718	STDMETHODIMP Machine::DiscardSettings()
2719	{
2720	AutoCaller autoCaller (this);
2721	CheckComRCReturnRC (autoCaller.rc());
2722
2723	AutoWriteLock alock (this);
2724
2725	HRESULT rc = checkStateDependency (MutableStateDep);
2726	CheckComRCReturnRC (rc);
2727
2728	/*
2729	* during this rollback, the session will be notified if data has
2730	* been actually changed
2731	*/
2732	rollback (true /* aNotify */);
2733
2734	return S_OK;
2735	}
2736
2737	STDMETHODIMP Machine::DeleteSettings()
2738	{
2739	AutoCaller autoCaller (this);
2740	CheckComRCReturnRC (autoCaller.rc());
2741
2742	AutoWriteLock alock (this);
2743
2744	HRESULT rc = checkStateDependency (MutableStateDep);
2745	CheckComRCReturnRC (rc);
2746
2747	if (mData->mRegistered)
2748	return setError (VBOX_E_INVALID_VM_STATE,
2749	tr ("Cannot delete settings of a registered machine"));
2750
2751	/* delete the settings only when the file actually exists */
2752	if (isConfigLocked())
2753	{
2754	unlockConfig();
2755	int vrc = RTFileDelete (Utf8Str (mData->mConfigFileFull));
2756	if (RT_FAILURE (vrc))
2757	return setError (VBOX_E_IPRT_ERROR,
2758	tr ("Could not delete the settings file '%ls' (%Rrc)"),
2759	mData->mConfigFileFull.raw(), vrc);
2760
2761	/* delete the Logs folder, nothing important should be left
2762	* there (we don't check for errors because the user might have
2763	* some private files there that we don't want to delete) */
2764	Utf8Str logFolder;
2765	getLogFolder (logFolder);
2766	Assert (!logFolder.isEmpty());
2767	if (RTDirExists (logFolder))
2768	{
2769	/* Delete all VBox.log[.N] files from the Logs folder
2770	* (this must be in sync with the rotation logic in
2771	* Console::powerUpThread()). Also, delete the VBox.png[.N]
2772	* files that may have been created by the GUI. */
2773	Utf8Str log = Utf8StrFmt ("%s/VBox.log", logFolder.raw());
2774	RTFileDelete (log);
2775	log = Utf8StrFmt ("%s/VBox.png", logFolder.raw());
2776	RTFileDelete (log);
2777	for (int i = 3; i >= 0; i--)
2778	{
2779	log = Utf8StrFmt ("%s/VBox.log.%d", logFolder.raw(), i);
2780	RTFileDelete (log);
2781	log = Utf8StrFmt ("%s/VBox.png.%d", logFolder.raw(), i);
2782	RTFileDelete (log);
2783	}
2784
2785	RTDirRemove (logFolder);
2786	}
2787
2788	/* delete the Snapshots folder, nothing important should be left
2789	* there (we don't check for errors because the user might have
2790	* some private files there that we don't want to delete) */
2791	Utf8Str snapshotFolder = mUserData->mSnapshotFolderFull;
2792	Assert (!snapshotFolder.isEmpty());
2793	if (RTDirExists (snapshotFolder))
2794	RTDirRemove (snapshotFolder);
2795
2796	/* delete the directory that contains the settings file, but only
2797	* if it matches the VM name (i.e. a structure created by default in
2798	* prepareSaveSettings()) */
2799	{
2800	Utf8Str settingsDir;
2801	if (isInOwnDir (&settingsDir))
2802	RTDirRemove (settingsDir);
2803	}
2804	}
2805
2806	return S_OK;
2807	}
2808
2809	STDMETHODIMP Machine::GetSnapshot (IN_GUID aId, ISnapshot **aSnapshot)
2810	{
2811	CheckComArgOutPointerValid (aSnapshot);
2812
2813	AutoCaller autoCaller (this);
2814	CheckComRCReturnRC (autoCaller.rc());
2815
2816	AutoReadLock alock (this);
2817
2818	Guid id = aId;
2819	ComObjPtr <Snapshot> snapshot;
2820
2821	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
2822	snapshot.queryInterfaceTo (aSnapshot);
2823
2824	return rc;
2825	}
2826
2827	STDMETHODIMP Machine::FindSnapshot (IN_BSTR aName, ISnapshot **aSnapshot)
2828	{
2829	CheckComArgNotNull (aName);
2830	CheckComArgOutPointerValid (aSnapshot);
2831
2832	AutoCaller autoCaller (this);
2833	CheckComRCReturnRC (autoCaller.rc());
2834
2835	AutoReadLock alock (this);
2836
2837	ComObjPtr <Snapshot> snapshot;
2838
2839	HRESULT rc = findSnapshot (aName, snapshot, true /* aSetError */);
2840	snapshot.queryInterfaceTo (aSnapshot);
2841
2842	return rc;
2843	}
2844
2845	STDMETHODIMP Machine::SetCurrentSnapshot (IN_GUID aId)
2846	{
2847	/// @todo (dmik) don't forget to set
2848	// mData->mCurrentStateModified to FALSE
2849
2850	return setError (E_NOTIMPL, "Not implemented");
2851	}
2852
2853	STDMETHODIMP
2854	Machine::CreateSharedFolder (IN_BSTR aName, IN_BSTR aHostPath, BOOL aWritable)
2855	{
2856	CheckComArgNotNull (aName);
2857	CheckComArgNotNull (aHostPath);
2858
2859	AutoCaller autoCaller (this);
2860	CheckComRCReturnRC (autoCaller.rc());
2861
2862	AutoWriteLock alock (this);
2863
2864	HRESULT rc = checkStateDependency (MutableStateDep);
2865	CheckComRCReturnRC (rc);
2866
2867	ComObjPtr <SharedFolder> sharedFolder;
2868	rc = findSharedFolder (aName, sharedFolder, false /* aSetError */);
2869	if (SUCCEEDED (rc))
2870	return setError (VBOX_E_OBJECT_IN_USE,
2871	tr ("Shared folder named '%ls' already exists"), aName);
2872
2873	sharedFolder.createObject();
2874	rc = sharedFolder->init (machine(), aName, aHostPath, aWritable);
2875	CheckComRCReturnRC (rc);
2876
2877	mHWData.backup();
2878	mHWData->mSharedFolders.push_back (sharedFolder);
2879
2880	/* inform the direct session if any */
2881	alock.leave();
2882	onSharedFolderChange();
2883
2884	return S_OK;
2885	}
2886
2887	STDMETHODIMP Machine::RemoveSharedFolder (IN_BSTR aName)
2888	{
2889	CheckComArgNotNull (aName);
2890
2891	AutoCaller autoCaller (this);
2892	CheckComRCReturnRC (autoCaller.rc());
2893
2894	AutoWriteLock alock (this);
2895
2896	HRESULT rc = checkStateDependency (MutableStateDep);
2897	CheckComRCReturnRC (rc);
2898
2899	ComObjPtr <SharedFolder> sharedFolder;
2900	rc = findSharedFolder (aName, sharedFolder, true /* aSetError */);
2901	CheckComRCReturnRC (rc);
2902
2903	mHWData.backup();
2904	mHWData->mSharedFolders.remove (sharedFolder);
2905
2906	/* inform the direct session if any */
2907	alock.leave();
2908	onSharedFolderChange();
2909
2910	return S_OK;
2911	}
2912
2913	STDMETHODIMP Machine::CanShowConsoleWindow (BOOL *aCanShow)
2914	{
2915	CheckComArgOutPointerValid (aCanShow);
2916
2917	/* start with No */
2918	*aCanShow = FALSE;
2919
2920	AutoCaller autoCaller (this);
2921	AssertComRCReturnRC (autoCaller.rc());
2922
2923	ComPtr <IInternalSessionControl> directControl;
2924	{
2925	AutoReadLock alock (this);
2926
2927	if (mData->mSession.mState != SessionState_Open)
2928	return setError (VBOX_E_INVALID_VM_STATE,
2929	tr ("Machine session is not open (session state: %d)"),
2930	mData->mSession.mState);
2931
2932	directControl = mData->mSession.mDirectControl;
2933	}
2934
2935	/* ignore calls made after #OnSessionEnd() is called */
2936	if (!directControl)
2937	return S_OK;
2938
2939	ULONG64 dummy;
2940	return directControl->OnShowWindow (TRUE /* aCheck */, aCanShow, &dummy);
2941	}
2942
2943	STDMETHODIMP Machine::ShowConsoleWindow (ULONG64 *aWinId)
2944	{
2945	CheckComArgOutPointerValid (aWinId);
2946
2947	AutoCaller autoCaller (this);
2948	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
2949
2950	ComPtr <IInternalSessionControl> directControl;
2951	{
2952	AutoReadLock alock (this);
2953
2954	if (mData->mSession.mState != SessionState_Open)
2955	return setError (E_FAIL,
2956	tr ("Machine session is not open (session state: %d)"),
2957	mData->mSession.mState);
2958
2959	directControl = mData->mSession.mDirectControl;
2960	}
2961
2962	/* ignore calls made after #OnSessionEnd() is called */
2963	if (!directControl)
2964	return S_OK;
2965
2966	BOOL dummy;
2967	return directControl->OnShowWindow (FALSE /* aCheck */, &dummy, aWinId);
2968	}
2969
2970	STDMETHODIMP Machine::GetGuestProperty (IN_BSTR aName, BSTR aValue, ULONG64 aTimestamp, BSTR *aFlags)
2971	{
2972	#if !defined (VBOX_WITH_GUEST_PROPS)
2973	ReturnComNotImplemented();
2974	#else
2975	CheckComArgNotNull (aName);
2976	CheckComArgOutPointerValid (aValue);
2977	CheckComArgOutPointerValid (aTimestamp);
2978	CheckComArgOutPointerValid (aFlags);
2979
2980	AutoCaller autoCaller (this);
2981	CheckComRCReturnRC (autoCaller.rc());
2982
2983	AutoReadLock alock (this);
2984
2985	using namespace guestProp;
2986	HRESULT rc = E_FAIL;
2987
2988	if (!mHWData->mPropertyServiceActive)
2989	{
2990	bool found = false;
2991	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
2992	(it != mHWData->mGuestProperties.end()) && !found; ++it)
2993	{
2994	if (it->mName == aName)
2995	{
2996	char szFlags[MAX_FLAGS_LEN + 1];
2997	it->mValue.cloneTo (aValue);
2998	*aTimestamp = it->mTimestamp;
2999	writeFlags (it->mFlags, szFlags);
3000	Bstr (szFlags).cloneTo (aFlags);
3001	found = true;
3002	}
3003	}
3004	rc = S_OK;
3005	}
3006	else
3007	{
3008	ComPtr <IInternalSessionControl> directControl =
3009	mData->mSession.mDirectControl;
3010
3011	/* just be on the safe side when calling another process */
3012	alock.unlock();
3013
3014	rc = directControl->AccessGuestProperty (aName, NULL, NULL,
3015	false /* isSetter */,
3016	aValue, aTimestamp, aFlags);
3017	}
3018	return rc;
3019	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3020	}
3021
3022	STDMETHODIMP Machine::GetGuestPropertyValue (IN_BSTR aName, BSTR *aValue)
3023	{
3024	ULONG64 dummyTimestamp;
3025	BSTR dummyFlags;
3026	return GetGuestProperty (aName, aValue, &dummyTimestamp, &dummyFlags);
3027	}
3028
3029	STDMETHODIMP Machine::GetGuestPropertyTimestamp (IN_BSTR aName, ULONG64 *aTimestamp)
3030	{
3031	BSTR dummyValue;
3032	BSTR dummyFlags;
3033	return GetGuestProperty (aName, &dummyValue, aTimestamp, &dummyFlags);
3034	}
3035
3036	STDMETHODIMP Machine::SetGuestProperty (IN_BSTR aName, IN_BSTR aValue, IN_BSTR aFlags)
3037	{
3038	#if !defined (VBOX_WITH_GUEST_PROPS)
3039	ReturnComNotImplemented();
3040	#else
3041	using namespace guestProp;
3042
3043	CheckComArgNotNull (aName);
3044	if ((aValue != NULL) && !VALID_PTR (aValue))
3045	return E_INVALIDARG;
3046	if ((aFlags != NULL) && !VALID_PTR (aFlags))
3047	return E_INVALIDARG;
3048
3049	Utf8Str utf8Name (aName);
3050	Utf8Str utf8Flags (aFlags);
3051	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
3052	if ( utf8Name.isNull()
3053	\|\| ((aFlags != NULL) && utf8Flags.isNull())
3054	\|\| utf8Patterns.isNull()
3055	)
3056	return E_OUTOFMEMORY;
3057	bool matchAll = false;
3058	if (0 == utf8Patterns.length())
3059	matchAll = true;
3060
3061	uint32_t fFlags = NILFLAG;
3062	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags))
3063	)
3064	return setError (E_INVALIDARG, tr ("Invalid flag values: '%ls'"),
3065	aFlags);
3066
3067	AutoCaller autoCaller (this);
3068	CheckComRCReturnRC (autoCaller.rc());
3069
3070	AutoWriteLock alock (this);
3071
3072	HRESULT rc = checkStateDependency (MutableStateDep);
3073	CheckComRCReturnRC (rc);
3074
3075	rc = S_OK;
3076
3077	if (!mHWData->mPropertyServiceActive)
3078	{
3079	bool found = false;
3080	HWData::GuestProperty property;
3081	property.mFlags = NILFLAG;
3082	if (fFlags & TRANSIENT)
3083	rc = setError (VBOX_E_INVALID_OBJECT_STATE,
3084	tr ("Cannot set a transient property when the "
3085	"machine is not running"));
3086	if (SUCCEEDED (rc))
3087	{
3088	for (HWData::GuestPropertyList::iterator it =
3089	mHWData->mGuestProperties.begin();
3090	it != mHWData->mGuestProperties.end(); ++ it)
3091	if (it->mName == aName)
3092	{
3093	property = *it;
3094	if (it->mFlags & (RDONLYHOST))
3095	rc = setError (E_ACCESSDENIED,
3096	tr ("The property '%ls' cannot be changed by the host"),
3097	aName);
3098	else
3099	{
3100	mHWData.backup();
3101	/* The backup() operation invalidates our iterator, so
3102	* get a new one. */
3103	for (it = mHWData->mGuestProperties.begin();
3104	it->mName != aName; ++ it)
3105	;
3106	mHWData->mGuestProperties.erase (it);
3107	}
3108	found = true;
3109	break;
3110	}
3111	}
3112	if (found && SUCCEEDED (rc))
3113	{
3114	if (aValue != NULL)
3115	{
3116	RTTIMESPEC time;
3117	property.mValue = aValue;
3118	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3119	if (aFlags != NULL)
3120	property.mFlags = fFlags;
3121	mHWData->mGuestProperties.push_back (property);
3122	}
3123	}
3124	else if (SUCCEEDED (rc) && (aValue != NULL))
3125	{
3126	RTTIMESPEC time;
3127	mHWData.backup();
3128	property.mName = aName;
3129	property.mValue = aValue;
3130	property.mTimestamp = RTTimeSpecGetNano (RTTimeNow (&time));
3131	property.mFlags = fFlags;
3132	mHWData->mGuestProperties.push_back (property);
3133	}
3134	if ( SUCCEEDED (rc)
3135	&& ( matchAll
3136	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
3137	utf8Name.raw(), RTSTR_MAX, NULL)
3138	)
3139	)
3140	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
3141	}
3142	else
3143	{
3144	ComPtr <IInternalSessionControl> directControl =
3145	mData->mSession.mDirectControl;
3146
3147	/* just be on the safe side when calling another process */
3148	alock.leave();
3149
3150	BSTR dummy = NULL;
3151	ULONG64 dummy64;
3152	rc = directControl->AccessGuestProperty (aName, aValue, aFlags,
3153	true /* isSetter */,
3154	&dummy, &dummy64, &dummy);
3155	}
3156	return rc;
3157	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3158	}
3159
3160	STDMETHODIMP Machine::SetGuestPropertyValue (IN_BSTR aName, IN_BSTR aValue)
3161	{
3162	return SetGuestProperty (aName, aValue, NULL);
3163	}
3164
3165	STDMETHODIMP Machine::
3166	EnumerateGuestProperties (IN_BSTR aPatterns, ComSafeArrayOut (BSTR, aNames),
3167	ComSafeArrayOut (BSTR, aValues),
3168	ComSafeArrayOut (ULONG64, aTimestamps),
3169	ComSafeArrayOut (BSTR, aFlags))
3170	{
3171	#if !defined (VBOX_WITH_GUEST_PROPS)
3172	ReturnComNotImplemented();
3173	#else
3174	if (!VALID_PTR (aPatterns) && (aPatterns != NULL))
3175	return E_POINTER;
3176
3177	CheckComArgOutSafeArrayPointerValid (aNames);
3178	CheckComArgOutSafeArrayPointerValid (aValues);
3179	CheckComArgOutSafeArrayPointerValid (aTimestamps);
3180	CheckComArgOutSafeArrayPointerValid (aFlags);
3181
3182	AutoCaller autoCaller (this);
3183	CheckComRCReturnRC (autoCaller.rc());
3184
3185	AutoReadLock alock (this);
3186
3187	using namespace guestProp;
3188	HRESULT rc = E_FAIL;
3189
3190	bool matchAll = false;
3191	if ((NULL == aPatterns) \|\| (0 == aPatterns[0]))
3192	matchAll = true;
3193	if (!mHWData->mPropertyServiceActive)
3194	{
3195
3196	/*
3197	* Look for matching patterns and build up a list.
3198	*/
3199	HWData::GuestPropertyList propList;
3200	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
3201	it != mHWData->mGuestProperties.end(); ++it)
3202	if ( matchAll
3203	\|\| RTStrSimplePatternMultiMatch (Utf8Str (aPatterns).raw(),
3204	RTSTR_MAX,
3205	Utf8Str (it->mName).raw(),
3206	RTSTR_MAX, NULL)
3207	)
3208	propList.push_back (*it);
3209
3210	/*
3211	* And build up the arrays for returning the property information.
3212	*/
3213	size_t cEntries = propList.size();
3214	SafeArray <BSTR> names (cEntries);
3215	SafeArray <BSTR> values (cEntries);
3216	SafeArray <ULONG64> timestamps (cEntries);
3217	SafeArray <BSTR> flags (cEntries);
3218	size_t iProp = 0;
3219	for (HWData::GuestPropertyList::iterator it = propList.begin();
3220	it != propList.end(); ++it)
3221	{
3222	char szFlags[MAX_FLAGS_LEN + 1];
3223	it->mName.cloneTo (&names[iProp]);
3224	it->mValue.cloneTo (&values[iProp]);
3225	timestamps[iProp] = it->mTimestamp;
3226	writeFlags (it->mFlags, szFlags);
3227	Bstr (szFlags).cloneTo (&flags[iProp]);
3228	++iProp;
3229	}
3230	names.detachTo (ComSafeArrayOutArg (aNames));
3231	values.detachTo (ComSafeArrayOutArg (aValues));
3232	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
3233	flags.detachTo (ComSafeArrayOutArg (aFlags));
3234	rc = S_OK;
3235	}
3236	else
3237	{
3238	ComPtr <IInternalSessionControl> directControl =
3239	mData->mSession.mDirectControl;
3240
3241	/* just be on the safe side when calling another process */
3242	alock.unlock();
3243
3244	rc = directControl->EnumerateGuestProperties (aPatterns,
3245	ComSafeArrayOutArg (aNames),
3246	ComSafeArrayOutArg (aValues),
3247	ComSafeArrayOutArg (aTimestamps),
3248	ComSafeArrayOutArg (aFlags));
3249	}
3250	return rc;
3251	#endif /* else !defined (VBOX_WITH_GUEST_PROPS) */
3252	}
3253
3254
3255	// public methods for internal purposes
3256	/////////////////////////////////////////////////////////////////////////////
3257
3258	/**
3259	* Saves the registry entry of this machine to the given configuration node.
3260	*
3261	* @param aEntryNode Node to save the registry entry to.
3262	*
3263	* @note locks this object for reading.
3264	*/
3265	HRESULT Machine::saveRegistryEntry (settings::Key &aEntryNode)
3266	{
3267	AssertReturn (!aEntryNode.isNull(), E_FAIL);
3268
3269	AutoLimitedCaller autoCaller (this);
3270	AssertComRCReturnRC (autoCaller.rc());
3271
3272	AutoReadLock alock (this);
3273
3274	/* UUID */
3275	aEntryNode.setValue <Guid> ("uuid", mData->mUuid);
3276	/* settings file name (possibly, relative) */
3277	aEntryNode.setValue <Bstr> ("src", mData->mConfigFile);
3278
3279	return S_OK;
3280	}
3281
3282	/**
3283	* Calculates the absolute path of the given path taking the directory of the
3284	* machine settings file as the current directory.
3285	*
3286	* @param aPath Path to calculate the absolute path for.
3287	* @param aResult Where to put the result (used only on success, can be the
3288	* same Utf8Str instance as passed in @a aPath).
3289	* @return IPRT result.
3290	*
3291	* @note Locks this object for reading.
3292	*/
3293	int Machine::calculateFullPath (const char *aPath, Utf8Str &aResult)
3294	{
3295	AutoCaller autoCaller (this);
3296	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
3297
3298	AutoReadLock alock (this);
3299
3300	AssertReturn (!mData->mConfigFileFull.isNull(), VERR_GENERAL_FAILURE);
3301
3302	Utf8Str settingsDir = mData->mConfigFileFull;
3303
3304	RTPathStripFilename (settingsDir.mutableRaw());
3305	char folder [RTPATH_MAX];
3306	int vrc = RTPathAbsEx (settingsDir, aPath, folder, sizeof (folder));
3307	if (RT_SUCCESS (vrc))
3308	aResult = folder;
3309
3310	return vrc;
3311	}
3312
3313	/**
3314	* Tries to calculate the relative path of the given absolute path using the
3315	* directory of the machine settings file as the base directory.
3316	*
3317	* @param aPath Absolute path to calculate the relative path for.
3318	* @param aResult Where to put the result (used only when it's possible to
3319	* make a relative path from the given absolute path; otherwise
3320	* left untouched).
3321	*
3322	* @note Locks this object for reading.
3323	*/
3324	void Machine::calculateRelativePath (const char *aPath, Utf8Str &aResult)
3325	{
3326	AutoCaller autoCaller (this);
3327	AssertComRCReturn (autoCaller.rc(), (void) 0);
3328
3329	AutoReadLock alock (this);
3330
3331	AssertReturnVoid (!mData->mConfigFileFull.isNull());
3332
3333	Utf8Str settingsDir = mData->mConfigFileFull;
3334
3335	RTPathStripFilename (settingsDir.mutableRaw());
3336	if (RTPathStartsWith (aPath, settingsDir))
3337	{
3338	/* when assigning, we create a separate Utf8Str instance because both
3339	* aPath and aResult can point to the same memory location when this
3340	* func is called (if we just do aResult = aPath, aResult will be freed
3341	* first, and since its the same as aPath, an attempt to copy garbage
3342	* will be made. */
3343	aResult = Utf8Str (aPath + settingsDir.length() + 1);
3344	}
3345	}
3346
3347	/**
3348	* Returns the full path to the machine's log folder in the
3349	* \a aLogFolder argument.
3350	*/
3351	void Machine::getLogFolder (Utf8Str &aLogFolder)
3352	{
3353	AutoCaller autoCaller (this);
3354	AssertComRCReturnVoid (autoCaller.rc());
3355
3356	AutoReadLock alock (this);
3357
3358	Utf8Str settingsDir;
3359	if (isInOwnDir (&settingsDir))
3360	{
3361	/* Log folder is <Machines>/<VM_Name>/Logs */
3362	aLogFolder = Utf8StrFmt ("%s%cLogs", settingsDir.raw(), RTPATH_DELIMITER);
3363	}
3364	else
3365	{
3366	/* Log folder is <Machines>/<VM_SnapshotFolder>/Logs */
3367	Assert (!mUserData->mSnapshotFolderFull.isEmpty());
3368	aLogFolder = Utf8StrFmt ("%ls%cLogs", mUserData->mSnapshotFolderFull.raw(),
3369	RTPATH_DELIMITER);
3370	}
3371	}
3372
3373	/**
3374	* @note Locks this object for writing, calls the client process (outside the
3375	* lock).
3376	*/
3377	HRESULT Machine::openSession (IInternalSessionControl *aControl)
3378	{
3379	LogFlowThisFuncEnter();
3380
3381	AssertReturn (aControl, E_FAIL);
3382
3383	AutoCaller autoCaller (this);
3384	CheckComRCReturnRC (autoCaller.rc());
3385
3386	AutoWriteLock alock (this);
3387
3388	if (!mData->mRegistered)
3389	return setError (E_UNEXPECTED,
3390	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3391
3392	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3393
3394	if (mData->mSession.mState == SessionState_Open \|\|
3395	mData->mSession.mState == SessionState_Closing)
3396	return setError (VBOX_E_INVALID_OBJECT_STATE,
3397	tr ("A session for the machine '%ls' is currently open "
3398	"(or being closed)"),
3399	mUserData->mName.raw());
3400
3401	/* may not be busy */
3402	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3403
3404	/* get the session PID */
3405	RTPROCESS pid = NIL_RTPROCESS;
3406	AssertCompile (sizeof (ULONG) == sizeof (RTPROCESS));
3407	aControl->GetPID ((ULONG *) &pid);
3408	Assert (pid != NIL_RTPROCESS);
3409
3410	if (mData->mSession.mState == SessionState_Spawning)
3411	{
3412	/* This machine is awaiting for a spawning session to be opened, so
3413	* reject any other open attempts from processes other than one
3414	* started by #openRemoteSession(). */
3415
3416	LogFlowThisFunc (("mSession.mPid=%d(0x%x)\n",
3417	mData->mSession.mPid, mData->mSession.mPid));
3418	LogFlowThisFunc (("session.pid=%d(0x%x)\n", pid, pid));
3419
3420	if (mData->mSession.mPid != pid)
3421	return setError (E_ACCESSDENIED,
3422	tr ("An unexpected process (PID=0x%08X) has tried to open a direct "
3423	"session with the machine named '%ls', while only a process "
3424	"started by OpenRemoteSession (PID=0x%08X) is allowed"),
3425	pid, mUserData->mName.raw(), mData->mSession.mPid);
3426	}
3427
3428	/* create a SessionMachine object */
3429	ComObjPtr <SessionMachine> sessionMachine;
3430	sessionMachine.createObject();
3431	HRESULT rc = sessionMachine->init (this);
3432	AssertComRC (rc);
3433
3434	if (SUCCEEDED (rc))
3435	{
3436	#ifdef VBOX_WITH_RESOURCE_USAGE_API
3437	registerMetrics (mParent->performanceCollector(), this, pid);
3438	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
3439
3440	/*
3441	* Set the session state to Spawning to protect against subsequent
3442	* attempts to open a session and to unregister the machine after
3443	* we leave the lock.
3444	*/
3445	SessionState_T origState = mData->mSession.mState;
3446	mData->mSession.mState = SessionState_Spawning;
3447
3448	/*
3449	* Leave the lock before calling the client process -- it will call
3450	* Machine/SessionMachine methods. Leaving the lock here is quite safe
3451	* because the state is Spawning, so that openRemotesession() and
3452	* openExistingSession() calls will fail. This method, called before we
3453	* enter the lock again, will fail because of the wrong PID.
3454	*
3455	* Note that mData->mSession.mRemoteControls accessed outside
3456	* the lock may not be modified when state is Spawning, so it's safe.
3457	*/
3458	alock.leave();
3459
3460	LogFlowThisFunc (("Calling AssignMachine()...\n"));
3461	rc = aControl->AssignMachine (sessionMachine);
3462	LogFlowThisFunc (("AssignMachine() returned %08X\n", rc));
3463
3464	/* The failure may occur w/o any error info (from RPC), so provide one */
3465	if (FAILED (rc))
3466	setError (VBOX_E_VM_ERROR,
3467	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3468
3469	if (SUCCEEDED (rc) && origState == SessionState_Spawning)
3470	{
3471	/* complete the remote session initialization */
3472
3473	/* get the console from the direct session */
3474	ComPtr <IConsole> console;
3475	rc = aControl->GetRemoteConsole (console.asOutParam());
3476	ComAssertComRC (rc);
3477
3478	if (SUCCEEDED (rc) && !console)
3479	{
3480	ComAssert (!!console);
3481	rc = E_FAIL;
3482	}
3483
3484	/* assign machine & console to the remote session */
3485	if (SUCCEEDED (rc))
3486	{
3487	/*
3488	* after openRemoteSession(), the first and the only
3489	* entry in remoteControls is that remote session
3490	*/
3491	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3492	rc = mData->mSession.mRemoteControls.front()->
3493	AssignRemoteMachine (sessionMachine, console);
3494	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3495
3496	/* The failure may occur w/o any error info (from RPC), so provide one */
3497	if (FAILED (rc))
3498	setError (VBOX_E_VM_ERROR,
3499	tr ("Failed to assign the machine to the remote session (%Rrc)"), rc);
3500	}
3501
3502	if (FAILED (rc))
3503	aControl->Uninitialize();
3504	}
3505
3506	/* enter the lock again */
3507	alock.enter();
3508
3509	/* Restore the session state */
3510	mData->mSession.mState = origState;
3511	}
3512
3513	/* finalize spawning anyway (this is why we don't return on errors above) */
3514	if (mData->mSession.mState == SessionState_Spawning)
3515	{
3516	/* Note that the progress object is finalized later */
3517
3518	/* We don't reset mSession.mPid here because it is necessary for
3519	* SessionMachine::uninit() to reap the child process later. */
3520
3521	if (FAILED (rc))
3522	{
3523	/* Close the remote session, remove the remote control from the list
3524	* and reset session state to Closed (@note keep the code in sync
3525	* with the relevant part in openSession()). */
3526
3527	Assert (mData->mSession.mRemoteControls.size() == 1);
3528	if (mData->mSession.mRemoteControls.size() == 1)
3529	{
3530	ErrorInfoKeeper eik;
3531	mData->mSession.mRemoteControls.front()->Uninitialize();
3532	}
3533
3534	mData->mSession.mRemoteControls.clear();
3535	mData->mSession.mState = SessionState_Closed;
3536	}
3537	}
3538	else
3539	{
3540	/* memorize PID of the directly opened session */
3541	if (SUCCEEDED (rc))
3542	mData->mSession.mPid = pid;
3543	}
3544
3545	if (SUCCEEDED (rc))
3546	{
3547	/* memorize the direct session control and cache IUnknown for it */
3548	mData->mSession.mDirectControl = aControl;
3549	mData->mSession.mState = SessionState_Open;
3550	/* associate the SessionMachine with this Machine */
3551	mData->mSession.mMachine = sessionMachine;
3552
3553	/* request an IUnknown pointer early from the remote party for later
3554	* identity checks (it will be internally cached within mDirectControl
3555	* at least on XPCOM) */
3556	ComPtr <IUnknown> unk = mData->mSession.mDirectControl;
3557	NOREF (unk);
3558	}
3559
3560	if (mData->mSession.mProgress)
3561	{
3562	/* finalize the progress after setting the state, for consistency */
3563	mData->mSession.mProgress->notifyComplete (rc);
3564	mData->mSession.mProgress.setNull();
3565	}
3566
3567	/* uninitialize the created session machine on failure */
3568	if (FAILED (rc))
3569	sessionMachine->uninit();
3570
3571	LogFlowThisFunc (("rc=%08X\n", rc));
3572	LogFlowThisFuncLeave();
3573	return rc;
3574	}
3575
3576	/**
3577	* @note Locks this object for writing, calls the client process
3578	* (inside the lock).
3579	*/
3580	HRESULT Machine::openRemoteSession (IInternalSessionControl *aControl,
3581	IN_BSTR aType, IN_BSTR aEnvironment,
3582	Progress *aProgress)
3583	{
3584	LogFlowThisFuncEnter();
3585
3586	AssertReturn (aControl, E_FAIL);
3587	AssertReturn (aProgress, E_FAIL);
3588
3589	AutoCaller autoCaller (this);
3590	CheckComRCReturnRC (autoCaller.rc());
3591
3592	AutoWriteLock alock (this);
3593
3594	if (!mData->mRegistered)
3595	return setError (E_UNEXPECTED,
3596	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3597
3598	LogFlowThisFunc (("mSession.mState=%d\n", mData->mSession.mState));
3599
3600	if (mData->mSession.mState == SessionState_Open \|\|
3601	mData->mSession.mState == SessionState_Spawning \|\|
3602	mData->mSession.mState == SessionState_Closing)
3603	return setError (VBOX_E_INVALID_OBJECT_STATE,
3604	tr ("A session for the machine '%ls' is currently open "
3605	"(or being opened or closed)"),
3606	mUserData->mName.raw());
3607
3608	/* may not be busy */
3609	AssertReturn (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
3610
3611	/* get the path to the executable */
3612	char path [RTPATH_MAX];
3613	RTPathAppPrivateArch (path, RTPATH_MAX);
3614	size_t sz = strlen (path);
3615	path [sz++] = RTPATH_DELIMITER;
3616	path [sz] = 0;
3617	char *cmd = path + sz;
3618	sz = RTPATH_MAX - sz;
3619
3620	int vrc = VINF_SUCCESS;
3621	RTPROCESS pid = NIL_RTPROCESS;
3622
3623	RTENV env = RTENV_DEFAULT;
3624
3625	if (aEnvironment)
3626	{
3627	char *newEnvStr = NULL;
3628
3629	do
3630	{
3631	/* clone the current environment */
3632	int vrc2 = RTEnvClone (&env, RTENV_DEFAULT);
3633	AssertRCBreakStmt (vrc2, vrc = vrc2);
3634
3635	newEnvStr = RTStrDup (Utf8Str (aEnvironment));
3636	AssertPtrBreakStmt (newEnvStr, vrc = vrc2);
3637
3638	/* put new variables to the environment
3639	* (ignore empty variable names here since RTEnv API
3640	* intentionally doesn't do that) */
3641	char *var = newEnvStr;
3642	for (char p = newEnvStr; p; ++ p)
3643	{
3644	if (p == '\n' && (p == newEnvStr \|\| (p - 1) != '\\'))
3645	{
3646	*p = '\0';
3647	if (*var)
3648	{
3649	char *val = strchr (var, '=');
3650	if (val)
3651	{
3652	*val++ = '\0';
3653	vrc2 = RTEnvSetEx (env, var, val);
3654	}
3655	else
3656	vrc2 = RTEnvUnsetEx (env, var);
3657	if (RT_FAILURE (vrc2))
3658	break;
3659	}
3660	var = p + 1;
3661	}
3662	}
3663	if (RT_SUCCESS (vrc2) && *var)
3664	vrc2 = RTEnvPutEx (env, var);
3665
3666	AssertRCBreakStmt (vrc2, vrc = vrc2);
3667	}
3668	while (0);
3669
3670	if (newEnvStr != NULL)
3671	RTStrFree (newEnvStr);
3672	}
3673
3674	Bstr type (aType);
3675
3676	/* Qt is default */
3677	#ifdef VBOX_WITH_QTGUI
3678	if (type == "gui" \|\| type == "GUI/Qt")
3679	{
3680	# ifdef RT_OS_DARWIN /* Avoid Launch Services confusing this with the selector by using a helper app. */
3681	const char VirtualBox_exe[] = "../Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM";
3682	# else
3683	const char VirtualBox_exe[] = "VirtualBox" HOSTSUFF_EXE;
3684	# endif
3685	Assert (sz >= sizeof (VirtualBox_exe));
3686	strcpy (cmd, VirtualBox_exe);
3687
3688	Utf8Str idStr = mData->mUuid.toString();
3689	# ifdef RT_OS_WINDOWS /** @todo drop this once the RTProcCreate bug has been fixed */
3690	const char * args[] = {path, "-startvm", idStr, 0 };
3691	# else
3692	Utf8Str name = mUserData->mName;
3693	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3694	# endif
3695	vrc = RTProcCreate (path, args, env, 0, &pid);
3696	}
3697	#else /* !VBOX_WITH_QTGUI */
3698	if (0)
3699	;
3700	#endif /* VBOX_WITH_QTGUI */
3701
3702	else
3703
3704	#ifdef VBOX_WITH_VRDP
3705	if (type == "vrdp")
3706	{
3707	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3708	Assert (sz >= sizeof (VBoxVRDP_exe));
3709	strcpy (cmd, VBoxVRDP_exe);
3710
3711	Utf8Str idStr = mData->mUuid.toString();
3712	# ifdef RT_OS_WINDOWS
3713	const char * args[] = {path, "-startvm", idStr, 0 };
3714	# else
3715	Utf8Str name = mUserData->mName;
3716	const char * args[] = {path, "-comment", name, "-startvm", idStr, 0 };
3717	# endif
3718	vrc = RTProcCreate (path, args, env, 0, &pid);
3719	}
3720	#else /* !VBOX_WITH_VRDP */
3721	if (0)
3722	;
3723	#endif /* !VBOX_WITH_VRDP */
3724
3725	else
3726
3727	#ifdef VBOX_WITH_HEADLESS
3728	if (type == "capture")
3729	{
3730	const char VBoxVRDP_exe[] = "VBoxHeadless" HOSTSUFF_EXE;
3731	Assert (sz >= sizeof (VBoxVRDP_exe));
3732	strcpy (cmd, VBoxVRDP_exe);
3733
3734	Utf8Str idStr = mData->mUuid.toString();
3735	# ifdef RT_OS_WINDOWS
3736	const char * args[] = {path, "-startvm", idStr, "-capture", 0 };
3737	# else
3738	Utf8Str name = mUserData->mName;
3739	const char * args[] = {path, "-comment", name, "-startvm", idStr, "-capture", 0 };
3740	# endif
3741	vrc = RTProcCreate (path, args, env, 0, &pid);
3742	}
3743	#else /* !VBOX_WITH_HEADLESS */
3744	if (0)
3745	;
3746	#endif /* !VBOX_WITH_HEADLESS */
3747	else
3748	{
3749	RTEnvDestroy (env);
3750	return setError (E_INVALIDARG,
3751	tr ("Invalid session type: '%ls'"), aType);
3752	}
3753
3754	RTEnvDestroy (env);
3755
3756	if (RT_FAILURE (vrc))
3757	return setError (VBOX_E_IPRT_ERROR,
3758	tr ("Could not launch a process for the machine '%ls' (%Rrc)"),
3759	mUserData->mName.raw(), vrc);
3760
3761	LogFlowThisFunc (("launched.pid=%d(0x%x)\n", pid, pid));
3762
3763	/*
3764	* Note that we don't leave the lock here before calling the client,
3765	* because it doesn't need to call us back if called with a NULL argument.
3766	* Leaving the lock herer is dangerous because we didn't prepare the
3767	* launch data yet, but the client we've just started may happen to be
3768	* too fast and call openSession() that will fail (because of PID, etc.),
3769	* so that the Machine will never get out of the Spawning session state.
3770	*/
3771
3772	/* inform the session that it will be a remote one */
3773	LogFlowThisFunc (("Calling AssignMachine (NULL)...\n"));
3774	HRESULT rc = aControl->AssignMachine (NULL);
3775	LogFlowThisFunc (("AssignMachine (NULL) returned %08X\n", rc));
3776
3777	if (FAILED (rc))
3778	{
3779	/* restore the session state */
3780	mData->mSession.mState = SessionState_Closed;
3781	/* The failure may occur w/o any error info (from RPC), so provide one */
3782	return setError (VBOX_E_VM_ERROR,
3783	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3784	}
3785
3786	/* attach launch data to the machine */
3787	Assert (mData->mSession.mPid == NIL_RTPROCESS);
3788	mData->mSession.mRemoteControls.push_back (aControl);
3789	mData->mSession.mProgress = aProgress;
3790	mData->mSession.mPid = pid;
3791	mData->mSession.mState = SessionState_Spawning;
3792	mData->mSession.mType = type;
3793
3794	LogFlowThisFuncLeave();
3795	return S_OK;
3796	}
3797
3798	/**
3799	* @note Locks this object for writing, calls the client process
3800	* (outside the lock).
3801	*/
3802	HRESULT Machine::openExistingSession (IInternalSessionControl *aControl)
3803	{
3804	LogFlowThisFuncEnter();
3805
3806	AssertReturn (aControl, E_FAIL);
3807
3808	AutoCaller autoCaller (this);
3809	CheckComRCReturnRC (autoCaller.rc());
3810
3811	AutoWriteLock alock (this);
3812
3813	if (!mData->mRegistered)
3814	return setError (E_UNEXPECTED,
3815	tr ("The machine '%ls' is not registered"), mUserData->mName.raw());
3816
3817	LogFlowThisFunc (("mSession.state=%d\n", mData->mSession.mState));
3818
3819	if (mData->mSession.mState != SessionState_Open)
3820	return setError (VBOX_E_INVALID_SESSION_STATE,
3821	tr ("The machine '%ls' does not have an open session"),
3822	mUserData->mName.raw());
3823
3824	ComAssertRet (!mData->mSession.mDirectControl.isNull(), E_FAIL);
3825
3826	/*
3827	* Get the console from the direct session (note that we don't leave the
3828	* lock here because GetRemoteConsole must not call us back).
3829	*/
3830	ComPtr <IConsole> console;
3831	HRESULT rc = mData->mSession.mDirectControl->
3832	GetRemoteConsole (console.asOutParam());
3833	if (FAILED (rc))
3834	{
3835	/* The failure may occur w/o any error info (from RPC), so provide one */
3836	return setError (VBOX_E_VM_ERROR,
3837	tr ("Failed to get a console object from the direct session (%Rrc)"), rc);
3838	}
3839
3840	ComAssertRet (!console.isNull(), E_FAIL);
3841
3842	ComObjPtr <SessionMachine> sessionMachine = mData->mSession.mMachine;
3843	AssertReturn (!sessionMachine.isNull(), E_FAIL);
3844
3845	/*
3846	* Leave the lock before calling the client process. It's safe here
3847	* since the only thing to do after we get the lock again is to add
3848	* the remote control to the list (which doesn't directly influence
3849	* anything).
3850	*/
3851	alock.leave();
3852
3853	/* attach the remote session to the machine */
3854	LogFlowThisFunc (("Calling AssignRemoteMachine()...\n"));
3855	rc = aControl->AssignRemoteMachine (sessionMachine, console);
3856	LogFlowThisFunc (("AssignRemoteMachine() returned %08X\n", rc));
3857
3858	/* The failure may occur w/o any error info (from RPC), so provide one */
3859	if (FAILED (rc))
3860	return setError (VBOX_E_VM_ERROR,
3861	tr ("Failed to assign the machine to the session (%Rrc)"), rc);
3862
3863	alock.enter();
3864
3865	/* need to revalidate the state after entering the lock again */
3866	if (mData->mSession.mState != SessionState_Open)
3867	{
3868	aControl->Uninitialize();
3869
3870	return setError (VBOX_E_INVALID_SESSION_STATE,
3871	tr ("The machine '%ls' does not have an open session"),
3872	mUserData->mName.raw());
3873	}
3874
3875	/* store the control in the list */
3876	mData->mSession.mRemoteControls.push_back (aControl);
3877
3878	LogFlowThisFuncLeave();
3879	return S_OK;
3880	}
3881
3882	/**
3883	* Returns @c true if the given machine has an open direct session and returns
3884	* the session machine instance and additional session data (on some platforms)
3885	* if so.
3886	*
3887	* Note that when the method returns @c false, the arguments remain unchanged.
3888	*
3889	* @param aMachine Session machine object.
3890	* @param aControl Direct session control object (optional).
3891	* @param aIPCSem Mutex IPC semaphore handle for this machine (optional).
3892	*
3893	* @note locks this object for reading.
3894	*/
3895	#if defined (RT_OS_WINDOWS)
3896	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
3897	ComPtr <IInternalSessionControl> aControl /= NULL*/,
3898	HANDLE aIPCSem /= NULL*/,
3899	bool aAllowClosing /= false/)
3900	#elif defined (RT_OS_OS2)
3901	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
3902	ComPtr <IInternalSessionControl> aControl /= NULL*/,
3903	HMTX aIPCSem /= NULL*/,
3904	bool aAllowClosing /= false/)
3905	#else
3906	bool Machine::isSessionOpen (ComObjPtr <SessionMachine> &aMachine,
3907	ComPtr <IInternalSessionControl> aControl /= NULL*/,
3908	bool aAllowClosing /= false/)
3909	#endif
3910	{
3911	AutoLimitedCaller autoCaller (this);
3912	AssertComRCReturn (autoCaller.rc(), false);
3913
3914	/* just return false for inaccessible machines */
3915	if (autoCaller.state() != Ready)
3916	return false;
3917
3918	AutoReadLock alock (this);
3919
3920	if (mData->mSession.mState == SessionState_Open \|\|
3921	(aAllowClosing && mData->mSession.mState == SessionState_Closing))
3922	{
3923	AssertReturn (!mData->mSession.mMachine.isNull(), false);
3924
3925	aMachine = mData->mSession.mMachine;
3926
3927	if (aControl != NULL)
3928	*aControl = mData->mSession.mDirectControl;
3929
3930	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
3931	/* Additional session data */
3932	if (aIPCSem != NULL)
3933	*aIPCSem = aMachine->mIPCSem;
3934	#endif
3935	return true;
3936	}
3937
3938	return false;
3939	}
3940
3941	/**
3942	* Returns @c true if the given machine has an spawning direct session and
3943	* returns and additional session data (on some platforms) if so.
3944	*
3945	* Note that when the method returns @c false, the arguments remain unchanged.
3946	*
3947	* @param aPID PID of the spawned direct session process.
3948	*
3949	* @note locks this object for reading.
3950	*/
3951	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
3952	bool Machine::isSessionSpawning (RTPROCESS aPID /= NULL*/)
3953	#else
3954	bool Machine::isSessionSpawning()
3955	#endif
3956	{
3957	AutoLimitedCaller autoCaller (this);
3958	AssertComRCReturn (autoCaller.rc(), false);
3959
3960	/* just return false for inaccessible machines */
3961	if (autoCaller.state() != Ready)
3962	return false;
3963
3964	AutoReadLock alock (this);
3965
3966	if (mData->mSession.mState == SessionState_Spawning)
3967	{
3968	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
3969	/* Additional session data */
3970	if (aPID != NULL)
3971	{
3972	AssertReturn (mData->mSession.mPid != NIL_RTPROCESS, false);
3973	*aPID = mData->mSession.mPid;
3974	}
3975	#endif
3976	return true;
3977	}
3978
3979	return false;
3980	}
3981
3982	/**
3983	* Called from the client watcher thread to check for unexpected client process
3984	* death during Session_Spawning state (e.g. before it successfully opened a
3985	* direct session).
3986	*
3987	* On Win32 and on OS/2, this method is called only when we've got the
3988	* direct client's process termination notification, so it always returns @c
3989	* true.
3990	*
3991	* On other platforms, this method returns @c true if the client process is
3992	* terminated and @c false if it's still alive.
3993	*
3994	* @note Locks this object for writing.
3995	*/
3996	bool Machine::checkForSpawnFailure()
3997	{
3998	AutoCaller autoCaller (this);
3999	if (!autoCaller.isOk())
4000	{
4001	/* nothing to do */
4002	LogFlowThisFunc (("Already uninitialized!"));
4003	return true;
4004	}
4005
4006	/* VirtualBox::addProcessToReap() needs a write lock */
4007	AutoMultiWriteLock2 alock (mParent, this);
4008
4009	if (mData->mSession.mState != SessionState_Spawning)
4010	{
4011	/* nothing to do */
4012	LogFlowThisFunc (("Not spawning any more!"));
4013	return true;
4014	}
4015
4016	HRESULT rc = S_OK;
4017
4018	#if defined (RT_OS_WINDOWS) \|\| defined (RT_OS_OS2)
4019
4020	/* the process was already unexpectedly terminated, we just need to set an
4021	* error and finalize session spawning */
4022	rc = setError (E_FAIL,
4023	tr ("Virtual machine '%ls' has terminated unexpectedly "
4024	"during startup"),
4025	name().raw());
4026	#else
4027
4028	RTPROCSTATUS status;
4029	int vrc = ::RTProcWait (mData->mSession.mPid, RTPROCWAIT_FLAGS_NOBLOCK,
4030	&status);
4031
4032	if (vrc != VERR_PROCESS_RUNNING)
4033	rc = setError (E_FAIL,
4034	tr ("Virtual machine '%ls' has terminated unexpectedly "
4035	"during startup"),
4036	name().raw());
4037	#endif
4038
4039	if (FAILED (rc))
4040	{
4041	/* Close the remote session, remove the remote control from the list
4042	* and reset session state to Closed (@note keep the code in sync with
4043	* the relevant part in checkForSpawnFailure()). */
4044
4045	Assert (mData->mSession.mRemoteControls.size() == 1);
4046	if (mData->mSession.mRemoteControls.size() == 1)
4047	{
4048	ErrorInfoKeeper eik;
4049	mData->mSession.mRemoteControls.front()->Uninitialize();
4050	}
4051
4052	mData->mSession.mRemoteControls.clear();
4053	mData->mSession.mState = SessionState_Closed;
4054
4055	/* finalize the progress after setting the state, for consistency */
4056	mData->mSession.mProgress->notifyComplete (rc);
4057	mData->mSession.mProgress.setNull();
4058
4059	mParent->addProcessToReap (mData->mSession.mPid);
4060	mData->mSession.mPid = NIL_RTPROCESS;
4061
4062	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
4063	return true;
4064	}
4065
4066	return false;
4067	}
4068
4069	/**
4070	* Checks that the registered flag of the machine can be set according to
4071	* the argument and sets it. On success, commits and saves all settings.
4072	*
4073	* @note When this machine is inaccessible, the only valid value for \a
4074	* aRegistered is FALSE (i.e. unregister the machine) because unregistered
4075	* inaccessible machines are not currently supported. Note that unregistering
4076	* an inaccessible machine will \b uninitialize this machine object. Therefore,
4077	* the caller must make sure there are no active Machine::addCaller() calls
4078	* on the current thread because this will block Machine::uninit().
4079	*
4080	* @note Must be called from mParent's write lock. Locks this object and
4081	* children for writing.
4082	*/
4083	HRESULT Machine::trySetRegistered (BOOL aRegistered)
4084	{
4085	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
4086
4087	AutoLimitedCaller autoCaller (this);
4088	AssertComRCReturnRC (autoCaller.rc());
4089
4090	AutoWriteLock alock (this);
4091
4092	/* wait for state dependants to drop to zero */
4093	ensureNoStateDependencies();
4094
4095	ComAssertRet (mData->mRegistered != aRegistered, E_FAIL);
4096
4097	if (!mData->mAccessible)
4098	{
4099	/* A special case: the machine is not accessible. */
4100
4101	/* inaccessible machines can only be unregistered */
4102	AssertReturn (!aRegistered, E_FAIL);
4103
4104	/* Uninitialize ourselves here because currently there may be no
4105	* unregistered that are inaccessible (this state combination is not
4106	* supported). Note releasing the caller and leaving the lock before
4107	* calling uninit() */
4108
4109	alock.leave();
4110	autoCaller.release();
4111
4112	uninit();
4113
4114	return S_OK;
4115	}
4116
4117	AssertReturn (autoCaller.state() == Ready, E_FAIL);
4118
4119	/* we will probably modify these and want to prevent concurrent
4120	* modifications until we finish */
4121	AutoWriteLock dvdLock (mDVDDrive);
4122	AutoWriteLock floppyLock (mFloppyDrive);
4123
4124	if (aRegistered)
4125	{
4126	if (mData->mRegistered)
4127	return setError (VBOX_E_INVALID_OBJECT_STATE,
4128	tr ("The machine '%ls' with UUID {%s} is already registered"),
4129	mUserData->mName.raw(),
4130	mData->mUuid.toString().raw());
4131	}
4132	else
4133	{
4134	if (mData->mMachineState == MachineState_Saved)
4135	return setError (VBOX_E_INVALID_VM_STATE,
4136	tr ("Cannot unregister the machine '%ls' because it "
4137	"is in the Saved state"),
4138	mUserData->mName.raw());
4139
4140	size_t snapshotCount = 0;
4141	if (mData->mFirstSnapshot)
4142	snapshotCount = mData->mFirstSnapshot->descendantCount() + 1;
4143	if (snapshotCount)
4144	return setError (VBOX_E_INVALID_OBJECT_STATE,
4145	tr ("Cannot unregister the machine '%ls' because it "
4146	"has %d snapshots"),
4147	mUserData->mName.raw(), snapshotCount);
4148
4149	if (mData->mSession.mState != SessionState_Closed)
4150	return setError (VBOX_E_INVALID_OBJECT_STATE,
4151	tr ("Cannot unregister the machine '%ls' because it has an "
4152	"open session"),
4153	mUserData->mName.raw());
4154
4155	if (mHDData->mAttachments.size() != 0)
4156	return setError (VBOX_E_INVALID_OBJECT_STATE,
4157	tr ("Cannot unregister the machine '%ls' because it "
4158	"has %d hard disks attached"),
4159	mUserData->mName.raw(), mHDData->mAttachments.size());
4160
4161	/* Note that we do not prevent unregistration of a DVD or Floppy image
4162	* is attached: as opposed to hard disks detaching such an image
4163	* implicitly in this method (which we will do below) won't have any
4164	* side effects (like detached orphan base and diff hard disks etc).*/
4165	}
4166
4167	HRESULT rc = S_OK;
4168
4169	/* Ensure the settings are saved. If we are going to be registered and
4170	* isConfigLocked() is FALSE then it means that no config file exists yet,
4171	* so create it by calling saveSettings() too. */
4172	if (isModified() \|\| (aRegistered && !isConfigLocked()))
4173	{
4174	rc = saveSettings();
4175	CheckComRCReturnRC (rc);
4176	}
4177
4178	/* Implicitly detach DVD/Floppy */
4179	rc = mDVDDrive->unmount();
4180	if (SUCCEEDED (rc))
4181	rc = mFloppyDrive->unmount();
4182
4183	if (SUCCEEDED (rc))
4184	{
4185	/* we may have had implicit modifications we want to fix on success */
4186	commit();
4187
4188	mData->mRegistered = aRegistered;
4189	}
4190	else
4191	{
4192	/* we may have had implicit modifications we want to cancel on failure*/
4193	rollback (false /* aNotify */);
4194	}
4195
4196	return rc;
4197	}
4198
4199	/**
4200	* Increases the number of objects dependent on the machine state or on the
4201	* registered state. Guarantees that these two states will not change at least
4202	* until #releaseStateDependency() is called.
4203	*
4204	* Depending on the @a aDepType value, additional state checks may be made.
4205	* These checks will set extended error info on failure. See
4206	* #checkStateDependency() for more info.
4207	*
4208	* If this method returns a failure, the dependency is not added and the caller
4209	* is not allowed to rely on any particular machine state or registration state
4210	* value and may return the failed result code to the upper level.
4211	*
4212	* @param aDepType Dependency type to add.
4213	* @param aState Current machine state (NULL if not interested).
4214	* @param aRegistered Current registered state (NULL if not interested).
4215	*
4216	* @note Locks this object for writing.
4217	*/
4218	HRESULT Machine::addStateDependency (StateDependency aDepType /* = AnyStateDep */,
4219	MachineState_T aState / = NULL */,
4220	BOOL aRegistered / = NULL */)
4221	{
4222	AutoCaller autoCaller (this);
4223	AssertComRCReturnRC (autoCaller.rc());
4224
4225	AutoWriteLock alock (this);
4226
4227	HRESULT rc = checkStateDependency (aDepType);
4228	CheckComRCReturnRC (rc);
4229
4230	{
4231	if (mData->mMachineStateChangePending != 0)
4232	{
4233	/* ensureNoStateDependencies() is waiting for state dependencies to
4234	* drop to zero so don't add more. It may make sense to wait a bit
4235	* and retry before reporting an error (since the pending state
4236	* transition should be really quick) but let's just assert for
4237	* now to see if it ever happens on practice. */
4238
4239	AssertFailed();
4240
4241	return setError (E_ACCESSDENIED,
4242	tr ("Machine state change is in progress. "
4243	"Please retry the operation later."));
4244	}
4245
4246	++ mData->mMachineStateDeps;
4247	Assert (mData->mMachineStateDeps != 0 /* overflow */);
4248	}
4249
4250	if (aState)
4251	*aState = mData->mMachineState;
4252	if (aRegistered)
4253	*aRegistered = mData->mRegistered;
4254
4255	return S_OK;
4256	}
4257
4258	/**
4259	* Decreases the number of objects dependent on the machine state.
4260	* Must always complete the #addStateDependency() call after the state
4261	* dependency is no more necessary.
4262	*/
4263	void Machine::releaseStateDependency()
4264	{
4265	AutoCaller autoCaller (this);
4266	AssertComRCReturnVoid (autoCaller.rc());
4267
4268	AutoWriteLock alock (this);
4269
4270	AssertReturnVoid (mData->mMachineStateDeps != 0
4271	/* releaseStateDependency() w/o addStateDependency()? */);
4272	-- mData->mMachineStateDeps;
4273
4274	if (mData->mMachineStateDeps == 0)
4275	{
4276	/* inform ensureNoStateDependencies() that there are no more deps */
4277	if (mData->mMachineStateChangePending != 0)
4278	{
4279	Assert (mData->mMachineStateDepsSem != NIL_RTSEMEVENTMULTI);
4280	RTSemEventMultiSignal (mData->mMachineStateDepsSem);
4281	}
4282	}
4283	}
4284
4285	// protected methods
4286	/////////////////////////////////////////////////////////////////////////////
4287
4288	/**
4289	* Performs machine state checks based on the @a aDepType value. If a check
4290	* fails, this method will set extended error info, otherwise it will return
4291	* S_OK. It is supposed, that on failure, the caller will immedieately return
4292	* the return value of this method to the upper level.
4293	*
4294	* When @a aDepType is AnyStateDep, this method always returns S_OK.
4295	*
4296	* When @a aDepType is MutableStateDep, this method returns S_OK only if the
4297	* current state of this machine object allows to change settings of the
4298	* machine (i.e. the machine is not registered, or registered but not running
4299	* and not saved). It is useful to call this method from Machine setters
4300	* before performing any change.
4301	*
4302	* When @a aDepType is MutableOrSavedStateDep, this method behaves the same
4303	* as for MutableStateDep except that if the machine is saved, S_OK is also
4304	* returned. This is useful in setters which allow changing machine
4305	* properties when it is in the saved state.
4306	*
4307	* @param aDepType Dependency type to check.
4308	*
4309	* @note Non Machine based classes should use #addStateDependency() and
4310	* #releaseStateDependency() methods or the smart AutoStateDependency
4311	* template.
4312	*
4313	* @note This method must be called from under this object's read or write
4314	* lock.
4315	*/
4316	HRESULT Machine::checkStateDependency (StateDependency aDepType)
4317	{
4318	switch (aDepType)
4319	{
4320	case AnyStateDep:
4321	{
4322	break;
4323	}
4324	case MutableStateDep:
4325	{
4326	if (mData->mRegistered &&
4327	(mType != IsSessionMachine \|\|
4328	mData->mMachineState > MachineState_Paused \|\|
4329	mData->mMachineState == MachineState_Saved))
4330	return setError (VBOX_E_INVALID_VM_STATE,
4331	tr ("The machine is not mutable (state is %d)"),
4332	mData->mMachineState);
4333	break;
4334	}
4335	case MutableOrSavedStateDep:
4336	{
4337	if (mData->mRegistered &&
4338	(mType != IsSessionMachine \|\|
4339	mData->mMachineState > MachineState_Paused))
4340	return setError (VBOX_E_INVALID_VM_STATE,
4341	tr ("The machine is not mutable (state is %d)"),
4342	mData->mMachineState);
4343	break;
4344	}
4345	}
4346
4347	return S_OK;
4348	}
4349
4350	/**
4351	* Helper to initialize all associated child objects and allocate data
4352	* structures.
4353	*
4354	* This method must be called as a part of the object's initialization procedure
4355	* (usually done in the #init() method).
4356	*
4357	* @note Must be called only from #init() or from #registeredInit().
4358	*/
4359	HRESULT Machine::initDataAndChildObjects()
4360	{
4361	AutoCaller autoCaller (this);
4362	AssertComRCReturnRC (autoCaller.rc());
4363	AssertComRCReturn (autoCaller.state() == InInit \|\|
4364	autoCaller.state() == Limited, E_FAIL);
4365
4366	AssertReturn (!mData->mAccessible, E_FAIL);
4367
4368	/* allocate data structures */
4369	mSSData.allocate();
4370	mUserData.allocate();
4371	mHWData.allocate();
4372	mHDData.allocate();
4373
4374	/* initialize mOSTypeId */
4375	mUserData->mOSTypeId = mParent->getUnknownOSType()->id();
4376
4377	/* create associated BIOS settings object */
4378	unconst (mBIOSSettings).createObject();
4379	mBIOSSettings->init (this);
4380
4381	#ifdef VBOX_WITH_VRDP
4382	/* create an associated VRDPServer object (default is disabled) */
4383	unconst (mVRDPServer).createObject();
4384	mVRDPServer->init (this);
4385	#endif
4386
4387	/* create an associated DVD drive object */
4388	unconst (mDVDDrive).createObject();
4389	mDVDDrive->init (this);
4390
4391	/* create an associated floppy drive object */
4392	unconst (mFloppyDrive).createObject();
4393	mFloppyDrive->init (this);
4394
4395	/* create associated serial port objects */
4396	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4397	{
4398	unconst (mSerialPorts [slot]).createObject();
4399	mSerialPorts [slot]->init (this, slot);
4400	}
4401
4402	/* create associated parallel port objects */
4403	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4404	{
4405	unconst (mParallelPorts [slot]).createObject();
4406	mParallelPorts [slot]->init (this, slot);
4407	}
4408
4409	/* create the audio adapter object (always present, default is disabled) */
4410	unconst (mAudioAdapter).createObject();
4411	mAudioAdapter->init (this);
4412
4413	/* create the USB controller object (always present, default is disabled) */
4414	unconst (mUSBController).createObject();
4415	mUSBController->init (this);
4416
4417	/* create the SATA controller object (always present, default is disabled) */
4418	unconst (mSATAController).createObject();
4419	mSATAController->init (this);
4420
4421	/* create associated network adapter objects */
4422	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4423	{
4424	unconst (mNetworkAdapters [slot]).createObject();
4425	mNetworkAdapters [slot]->init (this, slot);
4426	}
4427
4428	return S_OK;
4429	}
4430
4431	/**
4432	* Helper to uninitialize all associated child objects and to free all data
4433	* structures.
4434	*
4435	* This method must be called as a part of the object's uninitialization
4436	* procedure (usually done in the #uninit() method).
4437	*
4438	* @note Must be called only from #uninit() or from #registeredInit().
4439	*/
4440	void Machine::uninitDataAndChildObjects()
4441	{
4442	AutoCaller autoCaller (this);
4443	AssertComRCReturnVoid (autoCaller.rc());
4444	AssertComRCReturnVoid (autoCaller.state() == InUninit \|\|
4445	autoCaller.state() == Limited);
4446
4447	/* uninit all children using addDependentChild()/removeDependentChild()
4448	* in their init()/uninit() methods */
4449	uninitDependentChildren();
4450
4451	/* tell all our other child objects we've been uninitialized */
4452
4453	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
4454	{
4455	if (mNetworkAdapters [slot])
4456	{
4457	mNetworkAdapters [slot]->uninit();
4458	unconst (mNetworkAdapters [slot]).setNull();
4459	}
4460	}
4461
4462	if (mUSBController)
4463	{
4464	mUSBController->uninit();
4465	unconst (mUSBController).setNull();
4466	}
4467
4468	if (mSATAController)
4469	{
4470	mSATAController->uninit();
4471	unconst (mSATAController).setNull();
4472	}
4473
4474	if (mAudioAdapter)
4475	{
4476	mAudioAdapter->uninit();
4477	unconst (mAudioAdapter).setNull();
4478	}
4479
4480	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
4481	{
4482	if (mParallelPorts [slot])
4483	{
4484	mParallelPorts [slot]->uninit();
4485	unconst (mParallelPorts [slot]).setNull();
4486	}
4487	}
4488
4489	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
4490	{
4491	if (mSerialPorts [slot])
4492	{
4493	mSerialPorts [slot]->uninit();
4494	unconst (mSerialPorts [slot]).setNull();
4495	}
4496	}
4497
4498	if (mFloppyDrive)
4499	{
4500	mFloppyDrive->uninit();
4501	unconst (mFloppyDrive).setNull();
4502	}
4503
4504	if (mDVDDrive)
4505	{
4506	mDVDDrive->uninit();
4507	unconst (mDVDDrive).setNull();
4508	}
4509
4510	#ifdef VBOX_WITH_VRDP
4511	if (mVRDPServer)
4512	{
4513	mVRDPServer->uninit();
4514	unconst (mVRDPServer).setNull();
4515	}
4516	#endif
4517
4518	if (mBIOSSettings)
4519	{
4520	mBIOSSettings->uninit();
4521	unconst (mBIOSSettings).setNull();
4522	}
4523
4524	/* Deassociate hard disks (only when a real Machine or a SnapshotMachine
4525	* instance is uninitialized; SessionMachine instances refer to real
4526	* Machine hard disks). This is necessary for a clean re-initialization of
4527	* the VM after successfully re-checking the accessibility state. Note
4528	* that in case of normal Machine or SnapshotMachine uninitialization (as
4529	* a result of unregistering or discarding the snapshot), outdated hard
4530	* disk attachments will already be uninitialized and deleted, so this
4531	* code will not affect them. */
4532	if (!!mHDData && (mType == IsMachine \|\| mType == IsSnapshotMachine))
4533	{
4534	for (HDData::AttachmentList::const_iterator it =
4535	mHDData->mAttachments.begin();
4536	it != mHDData->mAttachments.end();
4537	++ it)
4538	{
4539	HRESULT rc = (*it)->hardDisk()->detachFrom (mData->mUuid,
4540	snapshotId());
4541	AssertComRC (rc);
4542	}
4543	}
4544
4545	if (mType == IsMachine)
4546	{
4547	/* reset some important fields of mData */
4548	mData->mCurrentSnapshot.setNull();
4549	mData->mFirstSnapshot.setNull();
4550	}
4551
4552	/* free data structures (the essential mData structure is not freed here
4553	* since it may be still in use) */
4554	mHDData.free();
4555	mHWData.free();
4556	mUserData.free();
4557	mSSData.free();
4558	}
4559
4560	/**
4561	* Makes sure that there are no machine state dependants. If necessary, waits
4562	* for the number of dependants to drop to zero.
4563	*
4564	* Make sure this method is called from under this object's write lock to
4565	* guarantee that no new dependants may be added when this method returns
4566	* control to the caller.
4567	*
4568	* @note Locks this object for writing. The lock will be released while waiting
4569	* (if necessary).
4570	*
4571	* @warning To be used only in methods that change the machine state!
4572	*/
4573	void Machine::ensureNoStateDependencies()
4574	{
4575	AssertReturnVoid (isWriteLockOnCurrentThread());
4576
4577	AutoWriteLock alock (this);
4578
4579	/* Wait for all state dependants if necessary */
4580	if (mData->mMachineStateDeps != 0)
4581	{
4582	/* lazy semaphore creation */
4583	if (mData->mMachineStateDepsSem == NIL_RTSEMEVENTMULTI)
4584	RTSemEventMultiCreate (&mData->mMachineStateDepsSem);
4585
4586	LogFlowThisFunc (("Waiting for state deps (%d) to drop to zero...\n",
4587	mData->mMachineStateDeps));
4588
4589	++ mData->mMachineStateChangePending;
4590
4591	/* reset the semaphore before waiting, the last dependant will signal
4592	* it */
4593	RTSemEventMultiReset (mData->mMachineStateDepsSem);
4594
4595	alock.leave();
4596
4597	RTSemEventMultiWait (mData->mMachineStateDepsSem, RT_INDEFINITE_WAIT);
4598
4599	alock.enter();
4600
4601	-- mData->mMachineStateChangePending;
4602	}
4603	}
4604
4605	/**
4606	* Changes the machine state and informs callbacks.
4607	*
4608	* This method is not intended to fail so it either returns S_OK or asserts (and
4609	* returns a failure).
4610	*
4611	* @note Locks this object for writing.
4612	*/
4613	HRESULT Machine::setMachineState (MachineState_T aMachineState)
4614	{
4615	LogFlowThisFuncEnter();
4616	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
4617
4618	AutoCaller autoCaller (this);
4619	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
4620
4621	AutoWriteLock alock (this);
4622
4623	/* wait for state dependants to drop to zero */
4624	ensureNoStateDependencies();
4625
4626	if (mData->mMachineState != aMachineState)
4627	{
4628	mData->mMachineState = aMachineState;
4629
4630	RTTimeNow (&mData->mLastStateChange);
4631
4632	mParent->onMachineStateChange (mData->mUuid, aMachineState);
4633	}
4634
4635	LogFlowThisFuncLeave();
4636	return S_OK;
4637	}
4638
4639	/**
4640	* Searches for a shared folder with the given logical name
4641	* in the collection of shared folders.
4642	*
4643	* @param aName logical name of the shared folder
4644	* @param aSharedFolder where to return the found object
4645	* @param aSetError whether to set the error info if the folder is
4646	* not found
4647	* @return
4648	* S_OK when found or VBOX_E_OBJECT_NOT_FOUND when not found
4649	*
4650	* @note
4651	* must be called from under the object's lock!
4652	*/
4653	HRESULT Machine::findSharedFolder (CBSTR aName,
4654	ComObjPtr <SharedFolder> &aSharedFolder,
4655	bool aSetError /* = false */)
4656	{
4657	bool found = false;
4658	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
4659	!found && it != mHWData->mSharedFolders.end();
4660	++ it)
4661	{
4662	AutoWriteLock alock (*it);
4663	found = (*it)->name() == aName;
4664	if (found)
4665	aSharedFolder = *it;
4666	}
4667
4668	HRESULT rc = found ? S_OK : VBOX_E_OBJECT_NOT_FOUND;
4669
4670	if (aSetError && !found)
4671	setError (rc, tr ("Could not find a shared folder named '%ls'"), aName);
4672
4673	return rc;
4674	}
4675
4676	/**
4677	* Loads all the VM settings by walking down the <Machine> node.
4678	*
4679	* @param aRegistered true when the machine is being loaded on VirtualBox
4680	* startup
4681	*
4682	* @note This method is intended to be called only from init(), so it assumes
4683	* all machine data fields have appropriate default values when it is called.
4684	*
4685	* @note Doesn't lock any objects.
4686	*/
4687	HRESULT Machine::loadSettings (bool aRegistered)
4688	{
4689	LogFlowThisFuncEnter();
4690	AssertReturn (mType == IsMachine, E_FAIL);
4691
4692	AutoCaller autoCaller (this);
4693	AssertReturn (autoCaller.state() == InInit, E_FAIL);
4694
4695	HRESULT rc = S_OK;
4696
4697	try
4698	{
4699	using namespace settings;
4700	using namespace xml;
4701
4702	/* no concurrent file access is possible in init() so open by handle */
4703	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
4704	XmlTreeBackend tree;
4705
4706	rc = VirtualBox::loadSettingsTree_FirstTime (tree, file,
4707	mData->mSettingsFileVersion);
4708	CheckComRCThrowRC (rc);
4709
4710	Key machineNode = tree.rootKey().key ("Machine");
4711
4712	/* uuid (required) */
4713	Guid id = machineNode.value <Guid> ("uuid");
4714
4715	/* If the stored UUID is not empty, it means the registered machine
4716	* is being loaded. Compare the loaded UUID with the stored one taken
4717	* from the global registry. */
4718	if (!mData->mUuid.isEmpty())
4719	{
4720	if (mData->mUuid != id)
4721	{
4722	throw setError (E_FAIL,
4723	tr ("Machine UUID {%RTuuid} in '%ls' doesn't match its "
4724	"UUID {%s} in the registry file '%ls'"),
4725	id.raw(), mData->mConfigFileFull.raw(),
4726	mData->mUuid.toString().raw(),
4727	mParent->settingsFileName().raw());
4728	}
4729	}
4730	else
4731	unconst (mData->mUuid) = id;
4732
4733	/* name (required) */
4734	mUserData->mName = machineNode.stringValue ("name");
4735
4736	/* nameSync (optional, default is true) */
4737	mUserData->mNameSync = machineNode.value <bool> ("nameSync");
4738
4739	/* Description (optional, default is null) */
4740	{
4741	Key descNode = machineNode.findKey ("Description");
4742	if (!descNode.isNull())
4743	mUserData->mDescription = descNode.keyStringValue();
4744	else
4745	mUserData->mDescription.setNull();
4746	}
4747
4748	/* OSType (required) */
4749	{
4750	mUserData->mOSTypeId = machineNode.stringValue ("OSType");
4751
4752	/* look up the object by Id to check it is valid */
4753	ComPtr <IGuestOSType> guestOSType;
4754	rc = mParent->GetGuestOSType (mUserData->mOSTypeId,
4755	guestOSType.asOutParam());
4756	CheckComRCThrowRC (rc);
4757	}
4758
4759	/* stateFile (optional) */
4760	{
4761	Bstr stateFilePath = machineNode.stringValue ("stateFile");
4762	if (stateFilePath)
4763	{
4764	Utf8Str stateFilePathFull = stateFilePath;
4765	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4766	if (RT_FAILURE (vrc))
4767	{
4768	throw setError (E_FAIL,
4769	tr ("Invalid saved state file path '%ls' (%Rrc)"),
4770	stateFilePath.raw(), vrc);
4771	}
4772	mSSData->mStateFilePath = stateFilePathFull;
4773	}
4774	else
4775	mSSData->mStateFilePath.setNull();
4776	}
4777
4778	/*
4779	* currentSnapshot ID (optional)
4780	*
4781	* Note that due to XML Schema constaraints, this attribute, when
4782	* present, will guaranteedly refer to an existing snapshot
4783	* definition in XML
4784	*/
4785	Guid currentSnapshotId = machineNode.valueOr <Guid> ("currentSnapshot",
4786	Guid());
4787
4788	/* snapshotFolder (optional) */
4789	{
4790	Bstr folder = machineNode.stringValue ("snapshotFolder");
4791	rc = COMSETTER (SnapshotFolder) (folder);
4792	CheckComRCThrowRC (rc);
4793	}
4794
4795	/* currentStateModified (optional, default is true) */
4796	mData->mCurrentStateModified = machineNode.value <bool> ("currentStateModified");
4797
4798	/* lastStateChange (optional, defaults to now) */
4799	{
4800	RTTIMESPEC now;
4801	RTTimeNow (&now);
4802	mData->mLastStateChange =
4803	machineNode.valueOr <RTTIMESPEC> ("lastStateChange", now);
4804	}
4805
4806	/* aborted (optional, default is false) */
4807	bool aborted = machineNode.value <bool> ("aborted");
4808
4809	/*
4810	* note: all mUserData members must be assigned prior this point because
4811	* we need to commit changes in order to let mUserData be shared by all
4812	* snapshot machine instances.
4813	*/
4814	mUserData.commitCopy();
4815
4816	/* Snapshot node (optional) */
4817	{
4818	Key snapshotNode = machineNode.findKey ("Snapshot");
4819	if (!snapshotNode.isNull())
4820	{
4821	/* read all snapshots recursively */
4822	rc = loadSnapshot (snapshotNode, currentSnapshotId, NULL);
4823	CheckComRCThrowRC (rc);
4824	}
4825	}
4826
4827	/* Hardware node (required) */
4828	rc = loadHardware (machineNode.key ("Hardware"));
4829	CheckComRCThrowRC (rc);
4830
4831	/* HardDiskAttachments node (required) */
4832	rc = loadHardDisks (machineNode.key ("HardDiskAttachments"), aRegistered);
4833	CheckComRCThrowRC (rc);
4834
4835	/*
4836	* NOTE: the assignment below must be the last thing to do,
4837	* otherwise it will be not possible to change the settings
4838	* somewehere in the code above because all setters will be
4839	* blocked by checkStateDependency (MutableStateDep).
4840	*/
4841
4842	/* set the machine state to Aborted or Saved when appropriate */
4843	if (aborted)
4844	{
4845	Assert (!mSSData->mStateFilePath);
4846	mSSData->mStateFilePath.setNull();
4847
4848	/* no need to use setMachineState() during init() */
4849	mData->mMachineState = MachineState_Aborted;
4850	}
4851	else if (mSSData->mStateFilePath)
4852	{
4853	/* no need to use setMachineState() during init() */
4854	mData->mMachineState = MachineState_Saved;
4855	}
4856	}
4857	catch (HRESULT err)
4858	{
4859	/* we assume that error info is set by the thrower */
4860	rc = err;
4861	}
4862	catch (...)
4863	{
4864	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
4865	}
4866
4867	LogFlowThisFuncLeave();
4868	return rc;
4869	}
4870
4871	/**
4872	* Recursively loads all snapshots starting from the given.
4873	*
4874	* @param aNode <Snapshot> node.
4875	* @param aCurSnapshotId Current snapshot ID from the settings file.
4876	* @param aParentSnapshot Parent snapshot.
4877	*/
4878	HRESULT Machine::loadSnapshot (const settings::Key &aNode,
4879	const Guid &aCurSnapshotId,
4880	Snapshot *aParentSnapshot)
4881	{
4882	using namespace settings;
4883
4884	AssertReturn (!aNode.isNull(), E_INVALIDARG);
4885	AssertReturn (mType == IsMachine, E_FAIL);
4886
4887	/* create a snapshot machine object */
4888	ComObjPtr <SnapshotMachine> snapshotMachine;
4889	snapshotMachine.createObject();
4890
4891	HRESULT rc = S_OK;
4892
4893	/* required */
4894	Guid uuid = aNode.value <Guid> ("uuid");
4895
4896	{
4897	/* optional */
4898	Bstr stateFilePath = aNode.stringValue ("stateFile");
4899	if (stateFilePath)
4900	{
4901	Utf8Str stateFilePathFull = stateFilePath;
4902	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
4903	if (RT_FAILURE (vrc))
4904	return setError (E_FAIL,
4905	tr ("Invalid saved state file path '%ls' (%Rrc)"),
4906	stateFilePath.raw(), vrc);
4907
4908	stateFilePath = stateFilePathFull;
4909	}
4910
4911	/* Hardware node (required) */
4912	Key hardwareNode = aNode.key ("Hardware");
4913
4914	/* HardDiskAttachments node (required) */
4915	Key hdasNode = aNode.key ("HardDiskAttachments");
4916
4917	/* initialize the snapshot machine */
4918	rc = snapshotMachine->init (this, hardwareNode, hdasNode,
4919	uuid, stateFilePath);
4920	CheckComRCReturnRC (rc);
4921	}
4922
4923	/* create a snapshot object */
4924	ComObjPtr <Snapshot> snapshot;
4925	snapshot.createObject();
4926
4927	{
4928	/* required */
4929	Bstr name = aNode.stringValue ("name");
4930
4931	/* required */
4932	RTTIMESPEC timeStamp = aNode.value <RTTIMESPEC> ("timeStamp");
4933
4934	/* optional */
4935	Bstr description;
4936	{
4937	Key descNode = aNode.findKey ("Description");
4938	if (!descNode.isNull())
4939	description = descNode.keyStringValue();
4940	}
4941
4942	/* initialize the snapshot */
4943	rc = snapshot->init (uuid, name, description, timeStamp,
4944	snapshotMachine, aParentSnapshot);
4945	CheckComRCReturnRC (rc);
4946	}
4947
4948	/* memorize the first snapshot if necessary */
4949	if (!mData->mFirstSnapshot)
4950	mData->mFirstSnapshot = snapshot;
4951
4952	/* memorize the current snapshot when appropriate */
4953	if (!mData->mCurrentSnapshot && snapshot->data().mId == aCurSnapshotId)
4954	mData->mCurrentSnapshot = snapshot;
4955
4956	/* Snapshots node (optional) */
4957	{
4958	Key snapshotsNode = aNode.findKey ("Snapshots");
4959	if (!snapshotsNode.isNull())
4960	{
4961	Key::List children = snapshotsNode.keys ("Snapshot");
4962	for (Key::List::const_iterator it = children.begin();
4963	it != children.end(); ++ it)
4964	{
4965	rc = loadSnapshot ((*it), aCurSnapshotId, snapshot);
4966	CheckComRCBreakRC (rc);
4967	}
4968	}
4969	}
4970
4971	return rc;
4972	}
4973
4974	/**
4975	* @param aNode <Hardware> node.
4976	*/
4977	HRESULT Machine::loadHardware (const settings::Key &aNode)
4978	{
4979	using namespace settings;
4980
4981	AssertReturn (!aNode.isNull(), E_INVALIDARG);
4982	AssertReturn (mType == IsMachine \|\| mType == IsSnapshotMachine, E_FAIL);
4983
4984	HRESULT rc = S_OK;
4985
4986	/* The hardware version attribute (optional). */
4987	mHWData->mHWVersion = aNode.stringValue ("version");
4988
4989	/* CPU node (currently not required) */
4990	{
4991	/* default value in case the node is not there */
4992	mHWData->mHWVirtExEnabled = TSBool_Default;
4993	mHWData->mHWVirtExNestedPagingEnabled = false;
4994	mHWData->mHWVirtExVPIDEnabled = false;
4995	mHWData->mPAEEnabled = false;
4996
4997	Key cpuNode = aNode.findKey ("CPU");
4998	if (!cpuNode.isNull())
4999	{
5000	Key hwVirtExNode = cpuNode.key ("HardwareVirtEx");
5001	if (!hwVirtExNode.isNull())
5002	{
5003	const char *enabled = hwVirtExNode.stringValue ("enabled");
5004	if (strcmp (enabled, "false") == 0)
5005	mHWData->mHWVirtExEnabled = TSBool_False;
5006	else if (strcmp (enabled, "true") == 0)
5007	mHWData->mHWVirtExEnabled = TSBool_True;
5008	else
5009	mHWData->mHWVirtExEnabled = TSBool_Default;
5010	}
5011	/* HardwareVirtExNestedPaging (optional, default is false) */
5012	Key HWVirtExNestedPagingNode = cpuNode.findKey ("HardwareVirtExNestedPaging");
5013	if (!HWVirtExNestedPagingNode.isNull())
5014	{
5015	mHWData->mHWVirtExNestedPagingEnabled = HWVirtExNestedPagingNode.value <bool> ("enabled");
5016	}
5017
5018	/* HardwareVirtExVPID (optional, default is false) */
5019	Key HWVirtExVPIDNode = cpuNode.findKey ("HardwareVirtExVPID");
5020	if (!HWVirtExVPIDNode.isNull())
5021	{
5022	mHWData->mHWVirtExVPIDEnabled = HWVirtExVPIDNode.value <bool> ("enabled");
5023	}
5024
5025	/* PAE (optional, default is false) */
5026	Key PAENode = cpuNode.findKey ("PAE");
5027	if (!PAENode.isNull())
5028	{
5029	mHWData->mPAEEnabled = PAENode.value <bool> ("enabled");
5030	}
5031
5032	/* CPUCount (optional, default is 1) */
5033	mHWData->mCPUCount = cpuNode.value <ULONG> ("count");
5034	}
5035	}
5036
5037	/* Memory node (required) */
5038	{
5039	Key memoryNode = aNode.key ("Memory");
5040
5041	mHWData->mMemorySize = memoryNode.value <ULONG> ("RAMSize");
5042	}
5043
5044	/* Boot node (required) */
5045	{
5046	/* reset all boot order positions to NoDevice */
5047	for (size_t i = 0; i < RT_ELEMENTS (mHWData->mBootOrder); i++)
5048	mHWData->mBootOrder [i] = DeviceType_Null;
5049
5050	Key bootNode = aNode.key ("Boot");
5051
5052	Key::List orderNodes = bootNode.keys ("Order");
5053	for (Key::List::const_iterator it = orderNodes.begin();
5054	it != orderNodes.end(); ++ it)
5055	{
5056	/* position (required) */
5057	/* position unicity is guaranteed by XML Schema */
5058	uint32_t position = (*it).value <uint32_t> ("position");
5059	-- position;
5060	Assert (position < RT_ELEMENTS (mHWData->mBootOrder));
5061
5062	/* device (required) */
5063	const char device = (it).stringValue ("device");
5064	if (strcmp (device, "None") == 0)
5065	mHWData->mBootOrder [position] = DeviceType_Null;
5066	else if (strcmp (device, "Floppy") == 0)
5067	mHWData->mBootOrder [position] = DeviceType_Floppy;
5068	else if (strcmp (device, "DVD") == 0)
5069	mHWData->mBootOrder [position] = DeviceType_DVD;
5070	else if (strcmp (device, "HardDisk") == 0)
5071	mHWData->mBootOrder [position] = DeviceType_HardDisk;
5072	else if (strcmp (device, "Network") == 0)
5073	mHWData->mBootOrder [position] = DeviceType_Network;
5074	else
5075	ComAssertMsgFailed (("Invalid device: %s", device));
5076	}
5077	}
5078
5079	/* Display node (required) */
5080	{
5081	Key displayNode = aNode.key ("Display");
5082
5083	mHWData->mVRAMSize = displayNode.value <ULONG> ("VRAMSize");
5084	mHWData->mMonitorCount = displayNode.value <ULONG> ("monitorCount");
5085	mHWData->mAccelerate3DEnabled = displayNode.value <bool> ("accelerate3D");
5086	}
5087
5088	#ifdef VBOX_WITH_VRDP
5089	/* RemoteDisplay */
5090	rc = mVRDPServer->loadSettings (aNode);
5091	CheckComRCReturnRC (rc);
5092	#endif
5093
5094	/* BIOS */
5095	rc = mBIOSSettings->loadSettings (aNode);
5096	CheckComRCReturnRC (rc);
5097
5098	/* DVD drive */
5099	rc = mDVDDrive->loadSettings (aNode);
5100	CheckComRCReturnRC (rc);
5101
5102	/* Floppy drive */
5103	rc = mFloppyDrive->loadSettings (aNode);
5104	CheckComRCReturnRC (rc);
5105
5106	/* USB Controller */
5107	rc = mUSBController->loadSettings (aNode);
5108	CheckComRCReturnRC (rc);
5109
5110	/* SATA Controller */
5111	rc = mSATAController->loadSettings (aNode);
5112	CheckComRCReturnRC (rc);
5113
5114	/* Network node (required) */
5115	{
5116	/* we assume that all network adapters are initially disabled
5117	* and detached */
5118
5119	Key networkNode = aNode.key ("Network");
5120
5121	rc = S_OK;
5122
5123	Key::List adapters = networkNode.keys ("Adapter");
5124	for (Key::List::const_iterator it = adapters.begin();
5125	it != adapters.end(); ++ it)
5126	{
5127	/* slot number (required) */
5128	/* slot unicity is guaranteed by XML Schema */
5129	uint32_t slot = (*it).value <uint32_t> ("slot");
5130	AssertBreak (slot < RT_ELEMENTS (mNetworkAdapters));
5131
5132	rc = mNetworkAdapters [slot]->loadSettings (*it);
5133	CheckComRCReturnRC (rc);
5134	}
5135	}
5136
5137	/* Serial node (required) */
5138	{
5139	Key serialNode = aNode.key ("UART");
5140
5141	rc = S_OK;
5142
5143	Key::List ports = serialNode.keys ("Port");
5144	for (Key::List::const_iterator it = ports.begin();
5145	it != ports.end(); ++ it)
5146	{
5147	/* slot number (required) */
5148	/* slot unicity is guaranteed by XML Schema */
5149	uint32_t slot = (*it).value <uint32_t> ("slot");
5150	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5151
5152	rc = mSerialPorts [slot]->loadSettings (*it);
5153	CheckComRCReturnRC (rc);
5154	}
5155	}
5156
5157	/* Parallel node (optional) */
5158	{
5159	Key parallelNode = aNode.key ("LPT");
5160
5161	rc = S_OK;
5162
5163	Key::List ports = parallelNode.keys ("Port");
5164	for (Key::List::const_iterator it = ports.begin();
5165	it != ports.end(); ++ it)
5166	{
5167	/* slot number (required) */
5168	/* slot unicity is guaranteed by XML Schema */
5169	uint32_t slot = (*it).value <uint32_t> ("slot");
5170	AssertBreak (slot < RT_ELEMENTS (mSerialPorts));
5171
5172	rc = mParallelPorts [slot]->loadSettings (*it);
5173	CheckComRCReturnRC (rc);
5174	}
5175	}
5176
5177	/* AudioAdapter */
5178	rc = mAudioAdapter->loadSettings (aNode);
5179	CheckComRCReturnRC (rc);
5180
5181	/* Shared folders (required) */
5182	{
5183	Key sharedFoldersNode = aNode.key ("SharedFolders");
5184
5185	rc = S_OK;
5186
5187	Key::List folders = sharedFoldersNode.keys ("SharedFolder");
5188	for (Key::List::const_iterator it = folders.begin();
5189	it != folders.end(); ++ it)
5190	{
5191	/* folder logical name (required) */
5192	Bstr name = (*it).stringValue ("name");
5193	/* folder host path (required) */
5194	Bstr hostPath = (*it).stringValue ("hostPath");
5195
5196	bool writable = (*it).value <bool> ("writable");
5197
5198	rc = CreateSharedFolder (name, hostPath, writable);
5199	CheckComRCReturnRC (rc);
5200	}
5201	}
5202
5203	/* Clipboard node (required) */
5204	{
5205	Key clipNode = aNode.key ("Clipboard");
5206
5207	const char *mode = clipNode.stringValue ("mode");
5208	if (strcmp (mode, "Disabled") == 0)
5209	mHWData->mClipboardMode = ClipboardMode_Disabled;
5210	else if (strcmp (mode, "HostToGuest") == 0)
5211	mHWData->mClipboardMode = ClipboardMode_HostToGuest;
5212	else if (strcmp (mode, "GuestToHost") == 0)
5213	mHWData->mClipboardMode = ClipboardMode_GuestToHost;
5214	else if (strcmp (mode, "Bidirectional") == 0)
5215	mHWData->mClipboardMode = ClipboardMode_Bidirectional;
5216	else
5217	AssertMsgFailed (("Invalid clipboard mode '%s'\n", mode));
5218	}
5219
5220	/* Guest node (required) */
5221	{
5222	Key guestNode = aNode.key ("Guest");
5223
5224	/* optional, defaults to 0 */
5225	mHWData->mMemoryBalloonSize =
5226	guestNode.value <ULONG> ("memoryBalloonSize");
5227	/* optional, defaults to 0 */
5228	mHWData->mStatisticsUpdateInterval =
5229	guestNode.value <ULONG> ("statisticsUpdateInterval");
5230	}
5231
5232	#ifdef VBOX_WITH_GUEST_PROPS
5233	/* Guest properties (optional) */
5234	{
5235	using namespace guestProp;
5236
5237	Key guestPropertiesNode = aNode.findKey ("GuestProperties");
5238	Bstr notificationPatterns (""); /* We catch allocation failure below. */
5239	if (!guestPropertiesNode.isNull())
5240	{
5241	Key::List properties = guestPropertiesNode.keys ("GuestProperty");
5242	for (Key::List::const_iterator it = properties.begin();
5243	it != properties.end(); ++ it)
5244	{
5245	uint32_t fFlags = NILFLAG;
5246
5247	/* property name (required) */
5248	Bstr name = (*it).stringValue ("name");
5249	/* property value (required) */
5250	Bstr value = (*it).stringValue ("value");
5251	/* property timestamp (optional, defaults to 0) */
5252	ULONG64 timestamp = (*it).value<ULONG64> ("timestamp");
5253	/* property flags (optional, defaults to empty) */
5254	Bstr flags = (*it).stringValue ("flags");
5255	Utf8Str utf8Flags (flags);
5256	if (utf8Flags.isNull ())
5257	return E_OUTOFMEMORY;
5258	validateFlags (utf8Flags.raw(), &fFlags);
5259	HWData::GuestProperty property = { name, value, timestamp, fFlags };
5260	mHWData->mGuestProperties.push_back (property);
5261	/* This is just sanity, as the push_back() will probably have thrown
5262	* an exception if we are out of memory. Note that if we run out
5263	* allocating the Bstrs above, this will be caught here as well. */
5264	if ( mHWData->mGuestProperties.back().mName.isNull ()
5265	\|\| mHWData->mGuestProperties.back().mValue.isNull ()
5266	)
5267	return E_OUTOFMEMORY;
5268	}
5269	notificationPatterns = guestPropertiesNode.stringValue ("notificationPatterns");
5270	}
5271	mHWData->mPropertyServiceActive = false;
5272	mHWData->mGuestPropertyNotificationPatterns = notificationPatterns;
5273	if (mHWData->mGuestPropertyNotificationPatterns.isNull ())
5274	return E_OUTOFMEMORY;
5275	}
5276	#endif /* VBOX_WITH_GUEST_PROPS defined */
5277
5278	AssertComRC (rc);
5279	return rc;
5280	}
5281
5282	/**
5283	* @param aNode <HardDiskAttachments> node.
5284	* @param aRegistered true when the machine is being loaded on VirtualBox
5285	* startup, or when a snapshot is being loaded (wchich
5286	* currently can happen on startup only)
5287	* @param aSnapshotId pointer to the snapshot ID if this is a snapshot machine
5288	*
5289	* @note May lock mParent for reading and hard disks for writing.
5290	*/
5291	HRESULT Machine::loadHardDisks (const settings::Key &aNode, bool aRegistered,
5292	const Guid aSnapshotId / = NULL */)
5293	{
5294	using namespace settings;
5295
5296	AssertReturn (!aNode.isNull(), E_INVALIDARG);
5297	AssertReturn ((mType == IsMachine && aSnapshotId == NULL) \|\|
5298	(mType == IsSnapshotMachine && aSnapshotId != NULL), E_FAIL);
5299
5300	HRESULT rc = S_OK;
5301
5302	Key::List children = aNode.keys ("HardDiskAttachment");
5303
5304	if (!aRegistered && children.size() > 0)
5305	{
5306	/* when the machine is being loaded (opened) from a file, it cannot
5307	* have hard disks attached (this should not happen normally,
5308	* because we don't allow to attach hard disks to an unregistered
5309	* VM at all */
5310	return setError (E_FAIL,
5311	tr ("Unregistered machine '%ls' cannot have hard disks attached "
5312	"(found %d hard disk attachments)"),
5313	mUserData->mName.raw(), children.size());
5314	}
5315
5316	/* Make sure the attached hard disks don't get unregistered until we
5317	* associate them with tis machine (important for VMs loaded (opened) after
5318	* VirtualBox startup) */
5319	AutoReadLock vboxLock (mParent);
5320
5321	for (Key::List::const_iterator it = children.begin();
5322	it != children.end(); ++ it)
5323	{
5324	/* hard disk uuid (required) */
5325	Guid uuid = (*it).value <Guid> ("hardDisk");
5326	/* bus (controller) type (required) */
5327	const char busStr = (it).stringValue ("bus");
5328	/* channel (required) */
5329	LONG channel = (*it).value <LONG> ("channel");
5330	/* device (required) */
5331	LONG device = (*it).value <LONG> ("device");
5332
5333	/* find a hard disk by UUID */
5334	ComObjPtr <HardDisk2> hd;
5335	rc = mParent->findHardDisk2 (&uuid, NULL, true /* aDoSetError */, &hd);
5336	CheckComRCReturnRC (rc);
5337
5338	AutoWriteLock hdLock (hd);
5339
5340	if (hd->type() == HardDiskType_Immutable)
5341	{
5342	if (mType == IsSnapshotMachine)
5343	return setError (E_FAIL,
5344	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5345	"directly attached to snapshot with UUID {%RTuuid} "
5346	"of the virtual machine '%ls' ('%ls')"),
5347	hd->locationFull().raw(), uuid.raw(),
5348	aSnapshotId->raw(),
5349	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5350
5351	return setError (E_FAIL,
5352	tr ("Immutable hard disk '%ls' with UUID {%RTuuid} cannot be "
5353	"directly attached to the virtual machine '%ls' ('%ls')"),
5354	hd->locationFull().raw(), uuid.raw(),
5355	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5356	}
5357
5358	if (mType != IsSnapshotMachine && hd->children().size() != 0)
5359	return setError (E_FAIL,
5360	tr ("Hard disk '%ls' with UUID {%RTuuid} cannot be directly "
5361	"attached to the virtual machine '%ls' ('%ls') "
5362	"because it has %d differencing child hard disks"),
5363	hd->locationFull().raw(), uuid.raw(),
5364	mUserData->mName.raw(), mData->mConfigFileFull.raw(),
5365	hd->children().size());
5366
5367	if (std::find_if (mHDData->mAttachments.begin(),
5368	mHDData->mAttachments.end(),
5369	HardDisk2Attachment::RefersTo (hd)) !=
5370	mHDData->mAttachments.end())
5371	{
5372	return setError (E_FAIL,
5373	tr ("Hard disk '%ls' with UUID {%RTuuid} is already attached "
5374	"to the virtual machine '%ls' ('%ls')"),
5375	hd->locationFull().raw(), uuid.raw(),
5376	mUserData->mName.raw(), mData->mConfigFileFull.raw());
5377	}
5378
5379	StorageBus_T bus = StorageBus_Null;
5380
5381	if (strcmp (busStr, "IDE") == 0)
5382	bus = StorageBus_IDE;
5383	else if (strcmp (busStr, "SATA") == 0)
5384	bus = StorageBus_SATA;
5385	else
5386	AssertFailedReturn (E_FAIL);
5387
5388	ComObjPtr <HardDisk2Attachment> attachment;
5389	attachment.createObject();
5390	rc = attachment->init (hd, bus, channel, device);
5391	CheckComRCBreakRC (rc);
5392
5393	/* associate the hard disk with this machine and snapshot */
5394	if (mType == IsSnapshotMachine)
5395	rc = hd->attachTo (mData->mUuid, *aSnapshotId);
5396	else
5397	rc = hd->attachTo (mData->mUuid);
5398
5399	AssertComRCBreakRC (rc);
5400
5401	/* backup mHDData to let registeredInit() properly rollback on failure
5402	* (= limited accessibility) */
5403
5404	mHDData.backup();
5405	mHDData->mAttachments.push_back (attachment);
5406	}
5407
5408	return rc;
5409	}
5410
5411	/**
5412	* Searches for a <Snapshot> node for the given snapshot.
5413	* If the search is successful, \a aSnapshotNode will contain the found node.
5414	* In this case, \a aSnapshotsNode can be NULL meaning the found node is a
5415	* direct child of \a aMachineNode.
5416	*
5417	* If the search fails, a failure is returned and both \a aSnapshotsNode and
5418	* \a aSnapshotNode are set to 0.
5419	*
5420	* @param aSnapshot Snapshot to search for.
5421	* @param aMachineNode <Machine> node to start from.
5422	* @param aSnapshotsNode <Snapshots> node containing the found <Snapshot> node
5423	* (may be NULL if the caller is not interested).
5424	* @param aSnapshotNode Found <Snapshot> node.
5425	*/
5426	HRESULT Machine::findSnapshotNode (Snapshot *aSnapshot, settings::Key &aMachineNode,
5427	settings::Key *aSnapshotsNode,
5428	settings::Key *aSnapshotNode)
5429	{
5430	using namespace settings;
5431
5432	AssertReturn (aSnapshot && !aMachineNode.isNull()
5433	&& aSnapshotNode != NULL, E_FAIL);
5434
5435	if (aSnapshotsNode)
5436	aSnapshotsNode->setNull();
5437	aSnapshotNode->setNull();
5438
5439	// build the full uuid path (from the top parent to the given snapshot)
5440	std::list <Guid> path;
5441	{
5442	ComObjPtr <Snapshot> parent = aSnapshot;
5443	while (parent)
5444	{
5445	path.push_front (parent->data().mId);
5446	parent = parent->parent();
5447	}
5448	}
5449
5450	Key snapshotsNode = aMachineNode;
5451	Key snapshotNode;
5452
5453	for (std::list <Guid>::const_iterator it = path.begin();
5454	it != path.end();
5455	++ it)
5456	{
5457	if (!snapshotNode.isNull())
5458	{
5459	/* proceed to the nested <Snapshots> node */
5460	snapshotsNode = snapshotNode.key ("Snapshots");
5461	snapshotNode.setNull();
5462	}
5463
5464	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5465
5466	Key::List children = snapshotsNode.keys ("Snapshot");
5467	for (Key::List::const_iterator ch = children.begin();
5468	ch != children.end();
5469	++ ch)
5470	{
5471	Guid id = (*ch).value <Guid> ("uuid");
5472	if (id == (*it))
5473	{
5474	/* pass over to the outer loop */
5475	snapshotNode = *ch;
5476	break;
5477	}
5478	}
5479
5480	if (!snapshotNode.isNull())
5481	continue;
5482
5483	/* the next uuid is not found, no need to continue... */
5484	AssertFailedBreak();
5485	}
5486
5487	// we must always succesfully find the node
5488	AssertReturn (!snapshotNode.isNull(), E_FAIL);
5489	AssertReturn (!snapshotsNode.isNull(), E_FAIL);
5490
5491	if (aSnapshotsNode && (snapshotsNode != aMachineNode))
5492	*aSnapshotsNode = snapshotsNode;
5493	*aSnapshotNode = snapshotNode;
5494
5495	return S_OK;
5496	}
5497
5498	/**
5499	* Returns the snapshot with the given UUID or fails of no such snapshot.
5500	*
5501	* @param aId snapshot UUID to find (empty UUID refers the first snapshot)
5502	* @param aSnapshot where to return the found snapshot
5503	* @param aSetError true to set extended error info on failure
5504	*/
5505	HRESULT Machine::findSnapshot (const Guid &aId, ComObjPtr <Snapshot> &aSnapshot,
5506	bool aSetError /* = false */)
5507	{
5508	if (!mData->mFirstSnapshot)
5509	{
5510	if (aSetError)
5511	return setError (E_FAIL,
5512	tr ("This machine does not have any snapshots"));
5513	return E_FAIL;
5514	}
5515
5516	if (aId.isEmpty())
5517	aSnapshot = mData->mFirstSnapshot;
5518	else
5519	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aId);
5520
5521	if (!aSnapshot)
5522	{
5523	if (aSetError)
5524	return setError (E_FAIL,
5525	tr ("Could not find a snapshot with UUID {%s}"),
5526	aId.toString().raw());
5527	return E_FAIL;
5528	}
5529
5530	return S_OK;
5531	}
5532
5533	/**
5534	* Returns the snapshot with the given name or fails of no such snapshot.
5535	*
5536	* @param aName snapshot name to find
5537	* @param aSnapshot where to return the found snapshot
5538	* @param aSetError true to set extended error info on failure
5539	*/
5540	HRESULT Machine::findSnapshot (IN_BSTR aName, ComObjPtr <Snapshot> &aSnapshot,
5541	bool aSetError /* = false */)
5542	{
5543	AssertReturn (aName, E_INVALIDARG);
5544
5545	if (!mData->mFirstSnapshot)
5546	{
5547	if (aSetError)
5548	return setError (VBOX_E_OBJECT_NOT_FOUND,
5549	tr ("This machine does not have any snapshots"));
5550	return VBOX_E_OBJECT_NOT_FOUND;
5551	}
5552
5553	aSnapshot = mData->mFirstSnapshot->findChildOrSelf (aName);
5554
5555	if (!aSnapshot)
5556	{
5557	if (aSetError)
5558	return setError (VBOX_E_OBJECT_NOT_FOUND,
5559	tr ("Could not find a snapshot named '%ls'"), aName);
5560	return VBOX_E_OBJECT_NOT_FOUND;
5561	}
5562
5563	return S_OK;
5564	}
5565
5566	/**
5567	* Helper for #saveSettings. Cares about renaming the settings directory and
5568	* file if the machine name was changed and about creating a new settings file
5569	* if this is a new machine.
5570	*
5571	* @note Must be never called directly but only from #saveSettings().
5572	*
5573	* @param aRenamed receives \|true\| if the name was changed and the settings
5574	* file was renamed as a result, or \|false\| otherwise. The
5575	* value makes sense only on success.
5576	* @param aNew receives \|true\| if a virgin settings file was created.
5577	*/
5578	HRESULT Machine::prepareSaveSettings (bool &aRenamed, bool &aNew)
5579	{
5580	/* Note: tecnhically, mParent needs to be locked only when the machine is
5581	* registered (see prepareSaveSettings() for details) but we don't
5582	* currently differentiate it in callers of saveSettings() so we don't
5583	* make difference here too. */
5584	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
5585	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
5586
5587	HRESULT rc = S_OK;
5588
5589	aRenamed = false;
5590
5591	/* if we're ready and isConfigLocked() is FALSE then it means
5592	* that no config file exists yet (we will create a virgin one) */
5593	aNew = !isConfigLocked();
5594
5595	/* attempt to rename the settings file if machine name is changed */
5596	if (mUserData->mNameSync &&
5597	mUserData.isBackedUp() &&
5598	mUserData.backedUpData()->mName != mUserData->mName)
5599	{
5600	aRenamed = true;
5601
5602	if (!aNew)
5603	{
5604	/* unlock the old config file */
5605	rc = unlockConfig();
5606	CheckComRCReturnRC (rc);
5607	}
5608
5609	bool dirRenamed = false;
5610	bool fileRenamed = false;
5611
5612	Utf8Str configFile, newConfigFile;
5613	Utf8Str configDir, newConfigDir;
5614
5615	do
5616	{
5617	int vrc = VINF_SUCCESS;
5618
5619	Utf8Str name = mUserData.backedUpData()->mName;
5620	Utf8Str newName = mUserData->mName;
5621
5622	configFile = mData->mConfigFileFull;
5623
5624	/* first, rename the directory if it matches the machine name */
5625	configDir = configFile;
5626	RTPathStripFilename (configDir.mutableRaw());
5627	newConfigDir = configDir;
5628	if (RTPathFilename (configDir) == name)
5629	{
5630	RTPathStripFilename (newConfigDir.mutableRaw());
5631	newConfigDir = Utf8StrFmt ("%s%c%s",
5632	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5633	/* new dir and old dir cannot be equal here because of 'if'
5634	* above and because name != newName */
5635	Assert (configDir != newConfigDir);
5636	if (!aNew)
5637	{
5638	/* perform real rename only if the machine is not new */
5639	vrc = RTPathRename (configDir.raw(), newConfigDir.raw(), 0);
5640	if (RT_FAILURE (vrc))
5641	{
5642	rc = setError (E_FAIL,
5643	tr ("Could not rename the directory '%s' to '%s' "
5644	"to save the settings file (%Rrc)"),
5645	configDir.raw(), newConfigDir.raw(), vrc);
5646	break;
5647	}
5648	dirRenamed = true;
5649	}
5650	}
5651
5652	newConfigFile = Utf8StrFmt ("%s%c%s.xml",
5653	newConfigDir.raw(), RTPATH_DELIMITER, newName.raw());
5654
5655	/* then try to rename the settings file itself */
5656	if (newConfigFile != configFile)
5657	{
5658	/* get the path to old settings file in renamed directory */
5659	configFile = Utf8StrFmt ("%s%c%s",
5660	newConfigDir.raw(), RTPATH_DELIMITER,
5661	RTPathFilename (configFile));
5662	if (!aNew)
5663	{
5664	/* perform real rename only if the machine is not new */
5665	vrc = RTFileRename (configFile.raw(), newConfigFile.raw(), 0);
5666	if (RT_FAILURE (vrc))
5667	{
5668	rc = setError (E_FAIL,
5669	tr ("Could not rename the settings file '%s' to '%s' "
5670	"(%Rrc)"),
5671	configFile.raw(), newConfigFile.raw(), vrc);
5672	break;
5673	}
5674	fileRenamed = true;
5675	}
5676	}
5677
5678	/* update mConfigFileFull amd mConfigFile */
5679	Bstr oldConfigFileFull = mData->mConfigFileFull;
5680	Bstr oldConfigFile = mData->mConfigFile;
5681	mData->mConfigFileFull = newConfigFile;
5682	/* try to get the relative path for mConfigFile */
5683	Utf8Str path = newConfigFile;
5684	mParent->calculateRelativePath (path, path);
5685	mData->mConfigFile = path;
5686
5687	/* last, try to update the global settings with the new path */
5688	if (mData->mRegistered)
5689	{
5690	rc = mParent->updateSettings (configDir, newConfigDir);
5691	if (FAILED (rc))
5692	{
5693	/* revert to old values */
5694	mData->mConfigFileFull = oldConfigFileFull;
5695	mData->mConfigFile = oldConfigFile;
5696	break;
5697	}
5698	}
5699
5700	/* update the snapshot folder */
5701	path = mUserData->mSnapshotFolderFull;
5702	if (RTPathStartsWith (path, configDir))
5703	{
5704	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
5705	path.raw() + configDir.length());
5706	mUserData->mSnapshotFolderFull = path;
5707	calculateRelativePath (path, path);
5708	mUserData->mSnapshotFolder = path;
5709	}
5710
5711	/* update the saved state file path */
5712	path = mSSData->mStateFilePath;
5713	if (RTPathStartsWith (path, configDir))
5714	{
5715	path = Utf8StrFmt ("%s%s", newConfigDir.raw(),
5716	path.raw() + configDir.length());
5717	mSSData->mStateFilePath = path;
5718	}
5719
5720	/* Update saved state file paths of all online snapshots.
5721	* Note that saveSettings() will recognize name change
5722	* and will save all snapshots in this case. */
5723	if (mData->mFirstSnapshot)
5724	mData->mFirstSnapshot->updateSavedStatePaths (configDir,
5725	newConfigDir);
5726	}
5727	while (0);
5728
5729	if (FAILED (rc))
5730	{
5731	/* silently try to rename everything back */
5732	if (fileRenamed)
5733	RTFileRename (newConfigFile.raw(), configFile.raw(), 0);
5734	if (dirRenamed)
5735	RTPathRename (newConfigDir.raw(), configDir.raw(), 0);
5736	}
5737
5738	if (!aNew)
5739	{
5740	/* lock the config again */
5741	HRESULT rc2 = lockConfig();
5742	if (SUCCEEDED (rc))
5743	rc = rc2;
5744	}
5745
5746	CheckComRCReturnRC (rc);
5747	}
5748
5749	if (aNew)
5750	{
5751	/* create a virgin config file */
5752	int vrc = VINF_SUCCESS;
5753
5754	/* ensure the settings directory exists */
5755	Utf8Str path = mData->mConfigFileFull;
5756	RTPathStripFilename (path.mutableRaw());
5757	if (!RTDirExists (path))
5758	{
5759	vrc = RTDirCreateFullPath (path, 0777);
5760	if (RT_FAILURE (vrc))
5761	{
5762	return setError (E_FAIL,
5763	tr ("Could not create a directory '%s' "
5764	"to save the settings file (%Rrc)"),
5765	path.raw(), vrc);
5766	}
5767	}
5768
5769	/* Note: open flags must correlate with RTFileOpen() in lockConfig() */
5770	path = Utf8Str (mData->mConfigFileFull);
5771	vrc = RTFileOpen (&mData->mHandleCfgFile, path,
5772	RTFILE_O_READWRITE \| RTFILE_O_CREATE \|
5773	RTFILE_O_DENY_WRITE);
5774	if (RT_SUCCESS (vrc))
5775	{
5776	vrc = RTFileWrite (mData->mHandleCfgFile,
5777	(void *) gDefaultMachineConfig,
5778	strlen (gDefaultMachineConfig), NULL);
5779	}
5780	if (RT_FAILURE (vrc))
5781	{
5782	mData->mHandleCfgFile = NIL_RTFILE;
5783	return setError (E_FAIL,
5784	tr ("Could not create the settings file '%s' (%Rrc)"),
5785	path.raw(), vrc);
5786	}
5787	/* we do not close the file to simulate lockConfig() */
5788	}
5789
5790	return rc;
5791	}
5792
5793	/**
5794	* Saves and commits machine data, user data and hardware data.
5795	*
5796	* Note that on failure, the data remains uncommitted.
5797	*
5798	* @a aFlags may combine the following flags:
5799	*
5800	* - SaveS_ResetCurStateModified: Resets mData->mCurrentStateModified to FALSE.
5801	* Used when saving settings after an operation that makes them 100%
5802	* correspond to the settings from the current snapshot.
5803	* - SaveS_InformCallbacksAnyway: Callbacks will be informed even if
5804	* #isReallyModified() returns false. This is necessary for cases when we
5805	* change machine data diectly, not through the backup()/commit() mechanism.
5806	*
5807	* @note Must be called from under mParent write lock (sometimes needed by
5808	* #prepareSaveSettings()) and this object's write lock. Locks children for
5809	* writing. There is one exception when mParent is unused and therefore may be
5810	* left unlocked: if this machine is an unregistered one.
5811	*/
5812	HRESULT Machine::saveSettings (int aFlags /= 0/)
5813	{
5814	LogFlowThisFuncEnter();
5815
5816	/* Note: tecnhically, mParent needs to be locked only when the machine is
5817	* registered (see prepareSaveSettings() for details) but we don't
5818	* currently differentiate it in callers of saveSettings() so we don't
5819	* make difference here too. */
5820	AssertReturn (mParent->isWriteLockOnCurrentThread(), E_FAIL);
5821	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
5822
5823	/* make sure child objects are unable to modify the settings while we are
5824	* saving them */
5825	ensureNoStateDependencies();
5826
5827	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
5828
5829	BOOL currentStateModified = mData->mCurrentStateModified;
5830	bool settingsModified;
5831
5832	if (!(aFlags & SaveS_ResetCurStateModified) && !currentStateModified)
5833	{
5834	/* We ignore changes to user data when setting mCurrentStateModified
5835	* because the current state will not differ from the current snapshot
5836	* if only user data has been changed (user data is shared by all
5837	* snapshots). */
5838	currentStateModified = isReallyModified (true /* aIgnoreUserData */);
5839	settingsModified = mUserData.hasActualChanges() \|\| currentStateModified;
5840	}
5841	else
5842	{
5843	if (aFlags & SaveS_ResetCurStateModified)
5844	currentStateModified = FALSE;
5845	settingsModified = isReallyModified();
5846	}
5847
5848	HRESULT rc = S_OK;
5849
5850	/* First, prepare to save settings. It will care about renaming the
5851	* settings directory and file if the machine name was changed and about
5852	* creating a new settings file if this is a new machine. */
5853	bool isRenamed = false;
5854	bool isNew = false;
5855	rc = prepareSaveSettings (isRenamed, isNew);
5856	CheckComRCReturnRC (rc);
5857
5858	try
5859	{
5860	using namespace settings;
5861	using namespace xml;
5862
5863	/* this object is locked for writing to prevent concurrent reads and writes */
5864	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
5865	XmlTreeBackend tree;
5866
5867	/* The newly created settings file is incomplete therefore we turn off
5868	* validation. The rest is like in loadSettingsTree_ForUpdate().*/
5869	rc = VirtualBox::loadSettingsTree (tree, file,
5870	!isNew /* aValidate */,
5871	false /* aCatchLoadErrors */,
5872	false /* aAddDefaults */);
5873	CheckComRCThrowRC (rc);
5874
5875	Key machineNode = tree.rootKey().createKey ("Machine");
5876
5877	/* uuid (required) */
5878	Assert (!mData->mUuid.isEmpty());
5879	machineNode.setValue <Guid> ("uuid", mData->mUuid);
5880
5881	/* name (required) */
5882	Assert (!mUserData->mName.isEmpty());
5883	machineNode.setValue <Bstr> ("name", mUserData->mName);
5884
5885	/* nameSync (optional, default is true) */
5886	machineNode.setValueOr <bool> ("nameSync", !!mUserData->mNameSync, true);
5887
5888	/* Description node (optional) */
5889	if (!mUserData->mDescription.isNull())
5890	{
5891	Key descNode = machineNode.createKey ("Description");
5892	descNode.setKeyValue <Bstr> (mUserData->mDescription);
5893	}
5894	else
5895	{
5896	Key descNode = machineNode.findKey ("Description");
5897	if (!descNode.isNull())
5898	descNode.zap();
5899	}
5900
5901	/* OSType (required) */
5902	machineNode.setValue <Bstr> ("OSType", mUserData->mOSTypeId);
5903
5904	/* stateFile (optional) */
5905	/// @todo The reason for MachineState_Restoring below:
5906	/// PushGuestProperties() is always called from Console::powerDown()
5907	/// (including the case when restoring from the saved state fails) and
5908	/// calls SaveSettings() to save guest properties. Since the saved state
5909	/// file is still present there (and should be kept), we must save it
5910	/// while in Restoring state too. However, calling SaveSettings() from
5911	/// PushGuestProperties() is wrong in the first place. A proper way is
5912	/// to only save guest properties node and not involve the whole save
5913	/// process.
5914	if (mData->mMachineState == MachineState_Saved \|\|
5915	mData->mMachineState == MachineState_Restoring)
5916	{
5917	Assert (!mSSData->mStateFilePath.isEmpty());
5918	/* try to make the file name relative to the settings file dir */
5919	Utf8Str stateFilePath = mSSData->mStateFilePath;
5920	calculateRelativePath (stateFilePath, stateFilePath);
5921	machineNode.setStringValue ("stateFile", stateFilePath);
5922	}
5923	else
5924	{
5925	Assert (mSSData->mStateFilePath.isNull());
5926	machineNode.zapValue ("stateFile");
5927	}
5928
5929	/* currentSnapshot ID (optional) */
5930	if (!mData->mCurrentSnapshot.isNull())
5931	{
5932	Assert (!mData->mFirstSnapshot.isNull());
5933	machineNode.setValue <Guid> ("currentSnapshot",
5934	mData->mCurrentSnapshot->data().mId);
5935	}
5936	else
5937	{
5938	Assert (mData->mFirstSnapshot.isNull());
5939	machineNode.zapValue ("currentSnapshot");
5940	}
5941
5942	/* snapshotFolder (optional) */
5943	/// @todo use the Bstr::NullOrEmpty constant and setValueOr
5944	if (!mUserData->mSnapshotFolder.isEmpty())
5945	machineNode.setValue <Bstr> ("snapshotFolder", mUserData->mSnapshotFolder);
5946	else
5947	machineNode.zapValue ("snapshotFolder");
5948
5949	/* currentStateModified (optional, default is true) */
5950	machineNode.setValueOr <bool> ("currentStateModified",
5951	!!currentStateModified, true);
5952
5953	/* lastStateChange */
5954	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
5955	mData->mLastStateChange);
5956
5957	/* set the aborted attribute when appropriate, defaults to false */
5958	machineNode.setValueOr <bool> ("aborted",
5959	mData->mMachineState == MachineState_Aborted,
5960	false);
5961
5962	/* Hardware node (required) */
5963	{
5964	/* first, delete the entire node if exists */
5965	Key hwNode = machineNode.findKey ("Hardware");
5966	if (!hwNode.isNull())
5967	hwNode.zap();
5968	/* then recreate it */
5969	hwNode = machineNode.createKey ("Hardware");
5970
5971	rc = saveHardware (hwNode);
5972	CheckComRCThrowRC (rc);
5973	}
5974
5975	/* HardDiskAttachments node (required) */
5976	{
5977	/* first, delete the entire node if exists */
5978	Key hdaNode = machineNode.findKey ("HardDiskAttachments");
5979	if (!hdaNode.isNull())
5980	hdaNode.zap();
5981	/* then recreate it */
5982	hdaNode = machineNode.createKey ("HardDiskAttachments");
5983
5984	rc = saveHardDisks (hdaNode);
5985	CheckComRCThrowRC (rc);
5986	}
5987
5988	/* ask to save all snapshots when the machine name was changed since
5989	* it may affect saved state file paths for online snapshots (see
5990	* #openConfigLoader() for details) */
5991	if (isRenamed)
5992	{
5993	rc = saveSnapshotSettingsWorker (machineNode, NULL,
5994	SaveSS_UpdateAllOp);
5995	CheckComRCThrowRC (rc);
5996	}
5997
5998	/* save the settings on success */
5999	rc = VirtualBox::saveSettingsTree (tree, file,
6000	mData->mSettingsFileVersion);
6001	CheckComRCThrowRC (rc);
6002	}
6003	catch (HRESULT err)
6004	{
6005	/* we assume that error info is set by the thrower */
6006	rc = err;
6007	}
6008	catch (...)
6009	{
6010	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6011	}
6012
6013	if (SUCCEEDED (rc))
6014	{
6015	commit();
6016
6017	/* memorize the new modified state */
6018	mData->mCurrentStateModified = currentStateModified;
6019	}
6020
6021	if (settingsModified \|\| (aFlags & SaveS_InformCallbacksAnyway))
6022	{
6023	/* Fire the data change event, even on failure (since we've already
6024	* committed all data). This is done only for SessionMachines because
6025	* mutable Machine instances are always not registered (i.e. private
6026	* to the client process that creates them) and thus don't need to
6027	* inform callbacks. */
6028	if (mType == IsSessionMachine)
6029	mParent->onMachineDataChange (mData->mUuid);
6030	}
6031
6032	LogFlowThisFunc (("rc=%08X\n", rc));
6033	LogFlowThisFuncLeave();
6034	return rc;
6035	}
6036
6037	/**
6038	* Wrapper for #saveSnapshotSettingsWorker() that opens the settings file
6039	* and locates the <Machine> node in there. See #saveSnapshotSettingsWorker()
6040	* for more details.
6041	*
6042	* @param aSnapshot Snapshot to operate on
6043	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6044	* or SaveSS_UpdateAttrsOp possibly combined with
6045	* SaveSS_UpdateCurrentId.
6046	*
6047	* @note Locks this object for writing + other child objects.
6048	*/
6049	HRESULT Machine::saveSnapshotSettings (Snapshot *aSnapshot, int aOpFlags)
6050	{
6051	AutoCaller autoCaller (this);
6052	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6053
6054	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6055
6056	/* This object's write lock is also necessary to serialize file access
6057	* (prevent concurrent reads and writes) */
6058	AutoWriteLock alock (this);
6059
6060	AssertReturn (isConfigLocked(), E_FAIL);
6061
6062	HRESULT rc = S_OK;
6063
6064	try
6065	{
6066	using namespace settings;
6067	using namespace xml;
6068
6069	/* load the settings file */
6070	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6071	XmlTreeBackend tree;
6072
6073	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
6074	CheckComRCReturnRC (rc);
6075
6076	Key machineNode = tree.rootKey().key ("Machine");
6077
6078	rc = saveSnapshotSettingsWorker (machineNode, aSnapshot, aOpFlags);
6079	CheckComRCReturnRC (rc);
6080
6081	/* save settings on success */
6082	rc = VirtualBox::saveSettingsTree (tree, file,
6083	mData->mSettingsFileVersion);
6084	CheckComRCReturnRC (rc);
6085	}
6086	catch (...)
6087	{
6088	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6089	}
6090
6091	return rc;
6092	}
6093
6094	/**
6095	* Performs the specified operation on the given snapshot
6096	* in the settings file represented by \a aMachineNode.
6097	*
6098	* If \a aOpFlags = SaveSS_UpdateAllOp, \a aSnapshot can be NULL to indicate
6099	* that the whole tree of the snapshots should be updated in <Machine>.
6100	* One particular case is when the last (and the only) snapshot should be
6101	* removed (it is so when both mCurrentSnapshot and mFirstSnapshot are NULL).
6102	*
6103	* \a aOp may be just SaveSS_UpdateCurrentId if only the currentSnapshot
6104	* attribute of <Machine> needs to be updated.
6105	*
6106	* @param aMachineNode <Machine> node in the opened settings file.
6107	* @param aSnapshot Snapshot to operate on.
6108	* @param aOpFlags Operation to perform, one of SaveSS_NoOp, SaveSS_AddOp
6109	* or SaveSS_UpdateAttrsOp possibly combined with
6110	* SaveSS_UpdateCurrentId.
6111	*
6112	* @note Must be called with this object locked for writing.
6113	* Locks child objects.
6114	*/
6115	HRESULT Machine::saveSnapshotSettingsWorker (settings::Key &aMachineNode,
6116	Snapshot *aSnapshot, int aOpFlags)
6117	{
6118	using namespace settings;
6119
6120	AssertReturn (!aMachineNode.isNull(), E_FAIL);
6121
6122	AssertReturn (isWriteLockOnCurrentThread(), E_FAIL);
6123
6124	int op = aOpFlags & SaveSS_OpMask;
6125	AssertReturn (
6126	(aSnapshot && (op == SaveSS_AddOp \|\| op == SaveSS_UpdateAttrsOp \|\|
6127	op == SaveSS_UpdateAllOp)) \|\|
6128	(!aSnapshot && ((op == SaveSS_NoOp && (aOpFlags & SaveSS_CurrentId)) \|\|
6129	op == SaveSS_UpdateAllOp)),
6130	E_FAIL);
6131
6132	HRESULT rc = S_OK;
6133
6134	bool recreateWholeTree = false;
6135
6136	do
6137	{
6138	if (op == SaveSS_NoOp)
6139	break;
6140
6141	/* quick path: recreate the whole tree of the snapshots */
6142	if (op == SaveSS_UpdateAllOp && aSnapshot == NULL)
6143	{
6144	/* first, delete the entire root snapshot node if it exists */
6145	Key snapshotNode = aMachineNode.findKey ("Snapshot");
6146	if (!snapshotNode.isNull())
6147	snapshotNode.zap();
6148
6149	/* second, if we have any snapshots left, substitute aSnapshot
6150	* with the first snapshot to recreate the whole tree, otherwise
6151	* break */
6152	if (mData->mFirstSnapshot)
6153	{
6154	aSnapshot = mData->mFirstSnapshot;
6155	recreateWholeTree = true;
6156	}
6157	else
6158	break;
6159	}
6160
6161	Assert (!!aSnapshot);
6162	ComObjPtr <Snapshot> parent = aSnapshot->parent();
6163
6164	if (op == SaveSS_AddOp)
6165	{
6166	Key parentNode;
6167
6168	if (parent)
6169	{
6170	rc = findSnapshotNode (parent, aMachineNode, NULL, &parentNode);
6171	CheckComRCBreakRC (rc);
6172
6173	ComAssertBreak (!parentNode.isNull(), rc = E_FAIL);
6174	}
6175
6176	do
6177	{
6178	Key snapshotsNode;
6179
6180	if (!parentNode.isNull())
6181	snapshotsNode = parentNode.createKey ("Snapshots");
6182	else
6183	snapshotsNode = aMachineNode;
6184	do
6185	{
6186	Key snapshotNode = snapshotsNode.appendKey ("Snapshot");
6187	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6188	CheckComRCBreakRC (rc);
6189
6190	/* when a new snapshot is added, this means diffs were created
6191	* for every normal/immutable hard disk of the VM, so we need to
6192	* save the current hard disk attachments */
6193
6194	Key hdaNode = aMachineNode.findKey ("HardDiskAttachments");
6195	if (!hdaNode.isNull())
6196	hdaNode.zap();
6197	hdaNode = aMachineNode.createKey ("HardDiskAttachments");
6198
6199	rc = saveHardDisks (hdaNode);
6200	CheckComRCBreakRC (rc);
6201
6202	if (mHDData->mAttachments.size() != 0)
6203	{
6204	/* If we have one or more attachments then we definitely
6205	* created diffs for them and associated new diffs with
6206	* current settngs. So, since we don't use saveSettings(),
6207	* we need to inform callbacks manually. */
6208	if (mType == IsSessionMachine)
6209	mParent->onMachineDataChange (mData->mUuid);
6210	}
6211	}
6212	while (0);
6213	}
6214	while (0);
6215
6216	break;
6217	}
6218
6219	Assert ((op == SaveSS_UpdateAttrsOp && !recreateWholeTree) \|\|
6220	op == SaveSS_UpdateAllOp);
6221
6222	Key snapshotsNode;
6223	Key snapshotNode;
6224
6225	if (!recreateWholeTree)
6226	{
6227	rc = findSnapshotNode (aSnapshot, aMachineNode,
6228	&snapshotsNode, &snapshotNode);
6229	CheckComRCBreakRC (rc);
6230	}
6231
6232	if (snapshotsNode.isNull())
6233	snapshotsNode = aMachineNode;
6234
6235	if (op == SaveSS_UpdateAttrsOp)
6236	rc = saveSnapshot (snapshotNode, aSnapshot, true /* aAttrsOnly */);
6237	else
6238	{
6239	if (!snapshotNode.isNull())
6240	snapshotNode.zap();
6241
6242	snapshotNode = snapshotsNode.appendKey ("Snapshot");
6243	rc = saveSnapshot (snapshotNode, aSnapshot, false /* aAttrsOnly */);
6244	CheckComRCBreakRC (rc);
6245	}
6246	}
6247	while (0);
6248
6249	if (SUCCEEDED (rc))
6250	{
6251	/* update currentSnapshot when appropriate */
6252	if (aOpFlags & SaveSS_CurrentId)
6253	{
6254	if (!mData->mCurrentSnapshot.isNull())
6255	aMachineNode.setValue <Guid> ("currentSnapshot",
6256	mData->mCurrentSnapshot->data().mId);
6257	else
6258	aMachineNode.zapValue ("currentSnapshot");
6259	}
6260	if (aOpFlags & SaveSS_CurStateModified)
6261	{
6262	/* defaults to true */
6263	aMachineNode.setValueOr <bool> ("currentStateModified",
6264	!!mData->mCurrentStateModified, true);
6265	}
6266	}
6267
6268	return rc;
6269	}
6270
6271	/**
6272	* Saves the given snapshot and all its children (unless \a aAttrsOnly is true).
6273	* It is assumed that the given node is empty (unless \a aAttrsOnly is true).
6274	*
6275	* @param aNode <Snapshot> node to save the snapshot to.
6276	* @param aSnapshot Snapshot to save.
6277	* @param aAttrsOnly If true, only updatge user-changeable attrs.
6278	*/
6279	HRESULT Machine::saveSnapshot (settings::Key &aNode, Snapshot *aSnapshot, bool aAttrsOnly)
6280	{
6281	using namespace settings;
6282
6283	AssertReturn (!aNode.isNull() && aSnapshot, E_INVALIDARG);
6284	AssertReturn (mType == IsMachine \|\| mType == IsSessionMachine, E_FAIL);
6285
6286	/* uuid (required) */
6287	if (!aAttrsOnly)
6288	aNode.setValue <Guid> ("uuid", aSnapshot->data().mId);
6289
6290	/* name (required) */
6291	aNode.setValue <Bstr> ("name", aSnapshot->data().mName);
6292
6293	/* timeStamp (required) */
6294	aNode.setValue <RTTIMESPEC> ("timeStamp", aSnapshot->data().mTimeStamp);
6295
6296	/* Description node (optional) */
6297	if (!aSnapshot->data().mDescription.isNull())
6298	{
6299	Key descNode = aNode.createKey ("Description");
6300	descNode.setKeyValue <Bstr> (aSnapshot->data().mDescription);
6301	}
6302	else
6303	{
6304	Key descNode = aNode.findKey ("Description");
6305	if (!descNode.isNull())
6306	descNode.zap();
6307	}
6308
6309	if (aAttrsOnly)
6310	return S_OK;
6311
6312	/* stateFile (optional) */
6313	if (aSnapshot->stateFilePath())
6314	{
6315	/* try to make the file name relative to the settings file dir */
6316	Utf8Str stateFilePath = aSnapshot->stateFilePath();
6317	calculateRelativePath (stateFilePath, stateFilePath);
6318	aNode.setStringValue ("stateFile", stateFilePath);
6319	}
6320
6321	{
6322	ComObjPtr <SnapshotMachine> snapshotMachine = aSnapshot->data().mMachine;
6323	ComAssertRet (!snapshotMachine.isNull(), E_FAIL);
6324
6325	/* save hardware */
6326	{
6327	Key hwNode = aNode.createKey ("Hardware");
6328	HRESULT rc = snapshotMachine->saveHardware (hwNode);
6329	CheckComRCReturnRC (rc);
6330	}
6331
6332	/* save hard disks */
6333	{
6334	Key hdasNode = aNode.createKey ("HardDiskAttachments");
6335	HRESULT rc = snapshotMachine->saveHardDisks (hdasNode);
6336	CheckComRCReturnRC (rc);
6337	}
6338	}
6339
6340	/* save children */
6341	{
6342	AutoWriteLock listLock (aSnapshot->childrenLock ());
6343
6344	if (aSnapshot->children().size())
6345	{
6346	Key snapshotsNode = aNode.createKey ("Snapshots");
6347
6348	HRESULT rc = S_OK;
6349
6350	for (Snapshot::SnapshotList::const_iterator it = aSnapshot->children().begin();
6351	it != aSnapshot->children().end();
6352	++ it)
6353	{
6354	Key snapshotNode = snapshotsNode.createKey ("Snapshot");
6355	rc = saveSnapshot (snapshotNode, (*it), aAttrsOnly);
6356	CheckComRCReturnRC (rc);
6357	}
6358	}
6359	}
6360
6361	return S_OK;
6362	}
6363
6364	/**
6365	* Saves the VM hardware configuration. It is assumed that the
6366	* given node is empty.
6367	*
6368	* @param aNode <Hardware> node to save the VM hardware confguration to.
6369	*/
6370	HRESULT Machine::saveHardware (settings::Key &aNode)
6371	{
6372	using namespace settings;
6373
6374	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6375
6376	HRESULT rc = S_OK;
6377
6378	/* The hardware version attribute (optional).
6379	Automatically upgrade from 1 to 2 when there is no saved state. (ugly!) */
6380	{
6381	Utf8Str hwVersion = mHWData->mHWVersion;
6382	if ( hwVersion.compare ("1") == 0
6383	&& mSSData->mStateFilePath.isEmpty())
6384	mHWData->mHWVersion = hwVersion = "2"; /** @todo Is this safe, to update mHWVersion here? If not some other point needs to be found where this can be done. */
6385	if (hwVersion.compare ("2") == 0) /** @todo get the default from the schema if possible. */
6386	aNode.zapValue ("version");
6387	else
6388	aNode.setStringValue ("version", hwVersion.raw());
6389	}
6390
6391	/* CPU (optional, but always created atm) */
6392	{
6393	Key cpuNode = aNode.createKey ("CPU");
6394	Key hwVirtExNode = cpuNode.createKey ("HardwareVirtEx");
6395	const char *value = NULL;
6396	switch (mHWData->mHWVirtExEnabled)
6397	{
6398	case TSBool_False:
6399	value = "false";
6400	break;
6401	case TSBool_True:
6402	value = "true";
6403	break;
6404	case TSBool_Default:
6405	value = "default";
6406	break;
6407	}
6408	hwVirtExNode.setStringValue ("enabled", value);
6409
6410	/* Nested paging (optional, default is false) */
6411	if (mHWData->mHWVirtExNestedPagingEnabled)
6412	{
6413	Key HWVirtExNestedPagingNode = cpuNode.createKey ("HardwareVirtExNestedPaging");
6414	HWVirtExNestedPagingNode.setValue <bool> ("enabled", true);
6415	}
6416
6417	/* VPID (optional, default is false) */
6418	if (mHWData->mHWVirtExVPIDEnabled)
6419	{
6420	Key HWVirtExVPIDNode = cpuNode.createKey ("HardwareVirtExVPID");
6421	HWVirtExVPIDNode.setValue <bool> ("enabled", true);
6422	}
6423
6424	/* PAE (optional, default is false) */
6425	if (mHWData->mPAEEnabled)
6426	{
6427	Key PAENode = cpuNode.createKey ("PAE");
6428	PAENode.setValue <bool> ("enabled", true);
6429	}
6430
6431	/* CPU count */
6432	cpuNode.setValue <ULONG> ("count", mHWData->mCPUCount);
6433	}
6434
6435	/* memory (required) */
6436	{
6437	Key memoryNode = aNode.createKey ("Memory");
6438	memoryNode.setValue <ULONG> ("RAMSize", mHWData->mMemorySize);
6439	}
6440
6441	/* boot (required) */
6442	{
6443	Key bootNode = aNode.createKey ("Boot");
6444
6445	for (ULONG pos = 0; pos < RT_ELEMENTS (mHWData->mBootOrder); ++ pos)
6446	{
6447	const char *device = NULL;
6448	switch (mHWData->mBootOrder [pos])
6449	{
6450	case DeviceType_Null:
6451	/* skip, this is allowed for <Order> nodes
6452	* when loading, the default value NoDevice will remain */
6453	continue;
6454	case DeviceType_Floppy: device = "Floppy"; break;
6455	case DeviceType_DVD: device = "DVD"; break;
6456	case DeviceType_HardDisk: device = "HardDisk"; break;
6457	case DeviceType_Network: device = "Network"; break;
6458	default:
6459	{
6460	ComAssertMsgFailedRet (("Invalid boot device: %d",
6461	mHWData->mBootOrder [pos]),
6462	E_FAIL);
6463	}
6464	}
6465
6466	Key orderNode = bootNode.appendKey ("Order");
6467	orderNode.setValue <ULONG> ("position", pos + 1);
6468	orderNode.setStringValue ("device", device);
6469	}
6470	}
6471
6472	/* display (required) */
6473	{
6474	Key displayNode = aNode.createKey ("Display");
6475	displayNode.setValue <ULONG> ("VRAMSize", mHWData->mVRAMSize);
6476	displayNode.setValue <ULONG> ("monitorCount", mHWData->mMonitorCount);
6477	displayNode.setValue <bool> ("accelerate3D", !!mHWData->mAccelerate3DEnabled);
6478	}
6479
6480	#ifdef VBOX_WITH_VRDP
6481	/* VRDP settings (optional) */
6482	rc = mVRDPServer->saveSettings (aNode);
6483	CheckComRCReturnRC (rc);
6484	#endif
6485
6486	/* BIOS (required) */
6487	rc = mBIOSSettings->saveSettings (aNode);
6488	CheckComRCReturnRC (rc);
6489
6490	/* DVD drive (required) */
6491	rc = mDVDDrive->saveSettings (aNode);
6492	CheckComRCReturnRC (rc);
6493
6494	/* Flooppy drive (required) */
6495	rc = mFloppyDrive->saveSettings (aNode);
6496	CheckComRCReturnRC (rc);
6497
6498	/* USB Controller (required) */
6499	rc = mUSBController->saveSettings (aNode);
6500	CheckComRCReturnRC (rc);
6501
6502	/* SATA Controller (required) */
6503	rc = mSATAController->saveSettings (aNode);
6504	CheckComRCReturnRC (rc);
6505
6506	/* Network adapters (required) */
6507	{
6508	Key nwNode = aNode.createKey ("Network");
6509
6510	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); ++ slot)
6511	{
6512	Key adapterNode = nwNode.appendKey ("Adapter");
6513
6514	adapterNode.setValue <ULONG> ("slot", slot);
6515
6516	rc = mNetworkAdapters [slot]->saveSettings (adapterNode);
6517	CheckComRCReturnRC (rc);
6518	}
6519	}
6520
6521	/* Serial ports */
6522	{
6523	Key serialNode = aNode.createKey ("UART");
6524
6525	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); ++ slot)
6526	{
6527	Key portNode = serialNode.appendKey ("Port");
6528
6529	portNode.setValue <ULONG> ("slot", slot);
6530
6531	rc = mSerialPorts [slot]->saveSettings (portNode);
6532	CheckComRCReturnRC (rc);
6533	}
6534	}
6535
6536	/* Parallel ports */
6537	{
6538	Key parallelNode = aNode.createKey ("LPT");
6539
6540	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); ++ slot)
6541	{
6542	Key portNode = parallelNode.appendKey ("Port");
6543
6544	portNode.setValue <ULONG> ("slot", slot);
6545
6546	rc = mParallelPorts [slot]->saveSettings (portNode);
6547	CheckComRCReturnRC (rc);
6548	}
6549	}
6550
6551	/* Audio adapter */
6552	rc = mAudioAdapter->saveSettings (aNode);
6553	CheckComRCReturnRC (rc);
6554
6555	/* Shared folders */
6556	{
6557	Key sharedFoldersNode = aNode.createKey ("SharedFolders");
6558
6559	for (HWData::SharedFolderList::const_iterator it = mHWData->mSharedFolders.begin();
6560	it != mHWData->mSharedFolders.end();
6561	++ it)
6562	{
6563	ComObjPtr <SharedFolder> folder = *it;
6564
6565	Key folderNode = sharedFoldersNode.appendKey ("SharedFolder");
6566
6567	/* all are mandatory */
6568	folderNode.setValue <Bstr> ("name", folder->name());
6569	folderNode.setValue <Bstr> ("hostPath", folder->hostPath());
6570	folderNode.setValue <bool> ("writable", !!folder->writable());
6571	}
6572	}
6573
6574	/* Clipboard */
6575	{
6576	Key clipNode = aNode.createKey ("Clipboard");
6577
6578	const char *modeStr = "Disabled";
6579	switch (mHWData->mClipboardMode)
6580	{
6581	case ClipboardMode_Disabled:
6582	/* already assigned */
6583	break;
6584	case ClipboardMode_HostToGuest:
6585	modeStr = "HostToGuest";
6586	break;
6587	case ClipboardMode_GuestToHost:
6588	modeStr = "GuestToHost";
6589	break;
6590	case ClipboardMode_Bidirectional:
6591	modeStr = "Bidirectional";
6592	break;
6593	default:
6594	ComAssertMsgFailedRet (("Clipboard mode %d is invalid",
6595	mHWData->mClipboardMode),
6596	E_FAIL);
6597	}
6598	clipNode.setStringValue ("mode", modeStr);
6599	}
6600
6601	/* Guest */
6602	{
6603	Key guestNode = aNode.createKey ("Guest");
6604
6605	guestNode.setValue <ULONG> ("memoryBalloonSize",
6606	mHWData->mMemoryBalloonSize);
6607	guestNode.setValue <ULONG> ("statisticsUpdateInterval",
6608	mHWData->mStatisticsUpdateInterval);
6609	}
6610
6611	#ifdef VBOX_WITH_GUEST_PROPS
6612	/* Guest properties */
6613	try
6614	{
6615	using namespace guestProp;
6616
6617	Key guestPropertiesNode = aNode.createKey ("GuestProperties");
6618
6619	for (HWData::GuestPropertyList::const_iterator it = mHWData->mGuestProperties.begin();
6620	it != mHWData->mGuestProperties.end(); ++it)
6621	{
6622	HWData::GuestProperty property = *it;
6623
6624	Key propertyNode = guestPropertiesNode.appendKey ("GuestProperty");
6625	char szFlags[MAX_FLAGS_LEN + 1];
6626
6627	propertyNode.setValue <Bstr> ("name", property.mName);
6628	propertyNode.setValue <Bstr> ("value", property.mValue);
6629	propertyNode.setValue <ULONG64> ("timestamp", property.mTimestamp);
6630	writeFlags (property.mFlags, szFlags);
6631	Bstr flags (szFlags);
6632	if (flags.isNull())
6633	return E_OUTOFMEMORY;
6634	propertyNode.setValue <Bstr> ("flags", flags);
6635	}
6636	Bstr emptyStr ("");
6637	if (emptyStr.isNull())
6638	return E_OUTOFMEMORY;
6639	guestPropertiesNode.setValueOr <Bstr> ("notificationPatterns",
6640	mHWData->mGuestPropertyNotificationPatterns,
6641	emptyStr);
6642	}
6643	catch (xml::ENoMemory e)
6644	{
6645	return E_OUTOFMEMORY;
6646	}
6647	#endif /* VBOX_WITH_GUEST_PROPS defined */
6648
6649	AssertComRC (rc);
6650	return rc;
6651	}
6652
6653	/**
6654	* Saves the hard disk confguration.
6655	* It is assumed that the given node is empty.
6656	*
6657	* @param aNode <HardDiskAttachments> node to save the hard disk confguration to.
6658	*/
6659	HRESULT Machine::saveHardDisks (settings::Key &aNode)
6660	{
6661	using namespace settings;
6662
6663	AssertReturn (!aNode.isNull(), E_INVALIDARG);
6664
6665	for (HDData::AttachmentList::const_iterator
6666	it = mHDData->mAttachments.begin();
6667	it != mHDData->mAttachments.end();
6668	++ it)
6669	{
6670	ComObjPtr <HardDisk2Attachment> att = *it;
6671
6672	Key hdNode = aNode.appendKey ("HardDiskAttachment");
6673
6674	{
6675	const char *bus = NULL;
6676	switch (att->bus())
6677	{
6678	case StorageBus_IDE: bus = "IDE"; break;
6679	case StorageBus_SATA: bus = "SATA"; break;
6680	default:
6681	ComAssertFailedRet (E_FAIL);
6682	}
6683
6684	/* hard disk uuid (required) */
6685	hdNode.setValue <Guid> ("hardDisk", att->hardDisk()->id());
6686	/* bus (controller) type (required) */
6687	hdNode.setStringValue ("bus", bus);
6688	/* channel (required) */
6689	hdNode.setValue <LONG> ("channel", att->channel());
6690	/* device (required) */
6691	hdNode.setValue <LONG> ("device", att->device());
6692	}
6693	}
6694
6695	return S_OK;
6696	}
6697
6698	/**
6699	* Saves machine state settings as defined by aFlags
6700	* (SaveSTS_* values).
6701	*
6702	* @param aFlags Combination of SaveSTS_* flags.
6703	*
6704	* @note Locks objects for writing.
6705	*/
6706	HRESULT Machine::saveStateSettings (int aFlags)
6707	{
6708	if (aFlags == 0)
6709	return S_OK;
6710
6711	AutoCaller autoCaller (this);
6712	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6713
6714	/* This object's write lock is also necessary to serialize file access
6715	* (prevent concurrent reads and writes) */
6716	AutoWriteLock alock (this);
6717
6718	AssertReturn (isConfigLocked(), E_FAIL);
6719
6720	HRESULT rc = S_OK;
6721
6722	try
6723	{
6724	using namespace settings;
6725	using namespace xml;
6726
6727	/* load the settings file */
6728	File file (mData->mHandleCfgFile, Utf8Str (mData->mConfigFileFull));
6729	XmlTreeBackend tree;
6730
6731	rc = VirtualBox::loadSettingsTree_ForUpdate (tree, file);
6732	CheckComRCReturnRC (rc);
6733
6734	Key machineNode = tree.rootKey().key ("Machine");
6735
6736	if (aFlags & SaveSTS_CurStateModified)
6737	{
6738	/* defaults to true */
6739	machineNode.setValueOr <bool> ("currentStateModified",
6740	!!mData->mCurrentStateModified, true);
6741	}
6742
6743	if (aFlags & SaveSTS_StateFilePath)
6744	{
6745	if (mSSData->mStateFilePath)
6746	{
6747	/* try to make the file name relative to the settings file dir */
6748	Utf8Str stateFilePath = mSSData->mStateFilePath;
6749	calculateRelativePath (stateFilePath, stateFilePath);
6750	machineNode.setStringValue ("stateFile", stateFilePath);
6751	}
6752	else
6753	machineNode.zapValue ("stateFile");
6754	}
6755
6756	if (aFlags & SaveSTS_StateTimeStamp)
6757	{
6758	Assert (mData->mMachineState != MachineState_Aborted \|\|
6759	mSSData->mStateFilePath.isNull());
6760
6761	machineNode.setValue <RTTIMESPEC> ("lastStateChange",
6762	mData->mLastStateChange);
6763
6764	/* set the aborted attribute when appropriate, defaults to false */
6765	machineNode.setValueOr <bool> ("aborted",
6766	mData->mMachineState == MachineState_Aborted,
6767	false);
6768	}
6769
6770	/* save settings on success */
6771	rc = VirtualBox::saveSettingsTree (tree, file,
6772	mData->mSettingsFileVersion);
6773	CheckComRCReturnRC (rc);
6774	}
6775	catch (...)
6776	{
6777	rc = VirtualBox::handleUnexpectedExceptions (RT_SRC_POS);
6778	}
6779
6780	return rc;
6781	}
6782
6783	/**
6784	* Creates differencing hard disks for all normal hard disks attached to this
6785	* machine and a new set of attachments to refer to created disks.
6786	*
6787	* Used when taking a snapshot or when discarding the current state.
6788	*
6789	* This method assumes that mHDData contains the original hard disk attachments
6790	* it needs to create diffs for. On success, these attachments will be replaced
6791	* with the created diffs. On failure, #deleteImplicitDiffs() is implicitly
6792	* called to delete created diffs which will also rollback mHDData and restore
6793	* whatever was backed up before calling this method.
6794	*
6795	* Attachments with non-normal hard disks are left as is.
6796	*
6797	* If @a aOnline is @c false then the original hard disks that require implicit
6798	* diffs will be locked for reading. Otherwise it is assumed that they are
6799	* already locked for writing (when the VM was started). Note that in the latter
6800	* case it is responsibility of the caller to lock the newly created diffs for
6801	* writing if this method succeeds.
6802	*
6803	* @param aFolder Folder where to create diff hard disks.
6804	* @param aProgress Progress object to run (must contain at least as
6805	* many operations left as the number of hard disks
6806	* attached).
6807	* @param aOnline Whether the VM was online prior to this operation.
6808	*
6809	* @note The progress object is not marked as completed, neither on success nor
6810	* on failure. This is a responsibility of the caller.
6811	*
6812	* @note Locks this object for writing.
6813	*/
6814	HRESULT Machine::createImplicitDiffs (const Bstr &aFolder,
6815	ComObjPtr <Progress> &aProgress,
6816	bool aOnline)
6817	{
6818	AssertReturn (!aFolder.isEmpty(), E_FAIL);
6819
6820	AutoCaller autoCaller (this);
6821	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6822
6823	AutoWriteLock alock (this);
6824
6825	/* must be in a protective state because we leave the lock below */
6826	AssertReturn (mData->mMachineState == MachineState_Saving \|\|
6827	mData->mMachineState == MachineState_Discarding, E_FAIL);
6828
6829	HRESULT rc = S_OK;
6830
6831	typedef std::list <ComObjPtr <HardDisk2> > LockedMedia;
6832	LockedMedia lockedMedia;
6833
6834	try
6835	{
6836	if (!aOnline)
6837	{
6838	/* lock all attached hard disks early to detect "in use"
6839	* situations before creating actual diffs */
6840	for (HDData::AttachmentList::const_iterator
6841	it = mHDData->mAttachments.begin();
6842	it != mHDData->mAttachments.end();
6843	++ it)
6844	{
6845	ComObjPtr <HardDisk2Attachment> hda = *it;
6846	ComObjPtr <HardDisk2> hd = hda->hardDisk();
6847
6848	rc = hd->LockRead (NULL);
6849	CheckComRCThrowRC (rc);
6850
6851	lockedMedia.push_back (hd);
6852	}
6853	}
6854
6855	/* remember the current list (note that we don't use backup() since
6856	* mHDData may be already backed up) */
6857	HDData::AttachmentList atts = mHDData->mAttachments;
6858
6859	/* start from scratch */
6860	mHDData->mAttachments.clear();
6861
6862	/* go through remembered attachments and create diffs for normal hard
6863	* disks and attach them */
6864
6865	for (HDData::AttachmentList::const_iterator
6866	it = atts.begin(); it != atts.end(); ++ it)
6867	{
6868	ComObjPtr <HardDisk2Attachment> hda = *it;
6869	ComObjPtr <HardDisk2> hd = hda->hardDisk();
6870
6871	/* type cannot be changed while attached => no need to lock */
6872	if (hd->type() != HardDiskType_Normal)
6873	{
6874	/* copy the attachment as is */
6875
6876	Assert (hd->type() == HardDiskType_Writethrough);
6877
6878	rc = aProgress->advanceOperation (
6879	BstrFmt (tr ("Skipping writethrough hard disk '%s'"),
6880	hd->root()->name().raw()));
6881	CheckComRCThrowRC (rc);
6882
6883	mHDData->mAttachments.push_back (hda);
6884	continue;
6885	}
6886
6887	/* need a diff */
6888
6889	rc = aProgress->advanceOperation (
6890	BstrFmt (tr ("Creating differencing hard disk for '%s'"),
6891	hd->root()->name().raw()));
6892	CheckComRCThrowRC (rc);
6893
6894	ComObjPtr <HardDisk2> diff;
6895	diff.createObject();
6896	rc = diff->init (mParent, hd->preferredDiffFormat(),
6897	BstrFmt ("%ls"RTPATH_SLASH_STR,
6898	mUserData->mSnapshotFolderFull.raw()));
6899	CheckComRCThrowRC (rc);
6900
6901	/* leave the lock before the potentially lengthy operation */
6902	alock.leave();
6903
6904	rc = hd->createDiffStorageAndWait (diff, &aProgress);
6905
6906	alock.enter();
6907
6908	CheckComRCThrowRC (rc);
6909
6910	rc = diff->attachTo (mData->mUuid);
6911	AssertComRCThrowRC (rc);
6912
6913	/* add a new attachment */
6914	ComObjPtr <HardDisk2Attachment> attachment;
6915	attachment.createObject();
6916	rc = attachment->init (diff, hda->bus(), hda->channel(),
6917	hda->device(), true /* aImplicit */);
6918	CheckComRCThrowRC (rc);
6919
6920	mHDData->mAttachments.push_back (attachment);
6921	}
6922	}
6923	catch (HRESULT aRC) { rc = aRC; }
6924
6925	/* unlock all hard disks we locked */
6926	if (!aOnline)
6927	{
6928	ErrorInfoKeeper eik;
6929
6930	for (LockedMedia::const_iterator it = lockedMedia.begin();
6931	it != lockedMedia.end(); ++ it)
6932	{
6933	HRESULT rc2 = (*it)->UnlockRead (NULL);
6934	AssertComRC (rc2);
6935	}
6936	}
6937
6938	if (FAILED (rc))
6939	{
6940	MultiResultRef mrc (rc);
6941
6942	mrc = deleteImplicitDiffs();
6943	}
6944
6945	return rc;
6946	}
6947
6948	/**
6949	* Deletes implicit differencing hard disks created either by
6950	* #createImplicitDiffs() or by #AttachHardDisk2() and rolls back mHDData.
6951	*
6952	* Note that to delete hard disks created by #AttachHardDisk2() this method is
6953	* called from #fixupHardDisks2() when the changes are rolled back.
6954	*
6955	* @note Locks this object for writing.
6956	*/
6957	HRESULT Machine::deleteImplicitDiffs()
6958	{
6959	AutoCaller autoCaller (this);
6960	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
6961
6962	AutoWriteLock alock (this);
6963
6964	AssertReturn (mHDData.isBackedUp(), E_FAIL);
6965
6966	HRESULT rc = S_OK;
6967
6968	HDData::AttachmentList implicitAtts;
6969
6970	const HDData::AttachmentList &oldAtts =
6971	mHDData.backedUpData()->mAttachments;
6972
6973	/* enumerate new attachments */
6974	for (HDData::AttachmentList::const_iterator
6975	it = mHDData->mAttachments.begin();
6976	it != mHDData->mAttachments.end(); ++ it)
6977	{
6978	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
6979
6980	if ((*it)->isImplicit())
6981	{
6982	/* deassociate and mark for deletion */
6983	rc = hd->detachFrom (mData->mUuid);
6984	AssertComRC (rc);
6985	implicitAtts.push_back (*it);
6986	continue;
6987	}
6988
6989	/* was this hard disk attached before? */
6990	HDData::AttachmentList::const_iterator oldIt =
6991	std::find_if (oldAtts.begin(), oldAtts.end(),
6992	HardDisk2Attachment::RefersTo (hd));
6993	if (oldIt == oldAtts.end())
6994	{
6995	/* no: de-associate */
6996	rc = hd->detachFrom (mData->mUuid);
6997	AssertComRC (rc);
6998	continue;
6999	}
7000	}
7001
7002	/* rollback hard disk changes */
7003	mHDData.rollback();
7004
7005	MultiResult mrc (S_OK);
7006
7007	/* delete unused implicit diffs */
7008	if (implicitAtts.size() != 0)
7009	{
7010	/* will leave the lock before the potentially lengthy
7011	* operation, so protect with the special state (unless already
7012	* protected) */
7013	MachineState_T oldState = mData->mMachineState;
7014	if (oldState != MachineState_Saving &&
7015	oldState != MachineState_Discarding)
7016	{
7017	setMachineState (MachineState_SettingUp);
7018	}
7019
7020	alock.leave();
7021
7022	for (HDData::AttachmentList::const_iterator
7023	it = implicitAtts.begin();
7024	it != implicitAtts.end(); ++ it)
7025	{
7026	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
7027
7028	mrc = hd->deleteStorageAndWait();
7029	}
7030
7031	alock.enter();
7032
7033	if (mData->mMachineState == MachineState_SettingUp)
7034	{
7035	setMachineState (oldState);
7036	}
7037	}
7038
7039	return mrc;
7040	}
7041
7042	/**
7043	* Perform deferred hard disk detachments on success and deletion of implicitly
7044	* created diffs on failure.
7045	*
7046	* Does nothing if the hard disk attachment data (mHDData) is not changed (not
7047	* backed up).
7048	*
7049	* When the data is backed up, this method will commit mHDData if @a aCommit is
7050	* @c true and rollback it otherwise before returning.
7051	*
7052	* If @a aOnline is @c true then this method called with @a aCommit = @c true
7053	* will also unlock the old hard disks for which the new implicit diffs were
7054	* created and will lock these new diffs for writing. When @a aCommit is @c
7055	* false, this argument is ignored.
7056	*
7057	* @param aCommit @c true if called on success.
7058	* @param aOnline Whether the VM was online prior to this operation.
7059	*
7060	* @note Locks this object for writing!
7061	*/
7062	void Machine::fixupHardDisks2 (bool aCommit, bool aOnline /= false/)
7063	{
7064	AutoCaller autoCaller (this);
7065	AssertComRCReturnVoid (autoCaller.rc());
7066
7067	AutoWriteLock alock (this);
7068
7069	/* no attach/detach operations -- nothing to do */
7070	if (!mHDData.isBackedUp())
7071	return;
7072
7073	HRESULT rc = S_OK;
7074
7075	if (aCommit)
7076	{
7077	HDData::AttachmentList &oldAtts =
7078	mHDData.backedUpData()->mAttachments;
7079
7080	/* enumerate new attachments */
7081	for (HDData::AttachmentList::const_iterator
7082	it = mHDData->mAttachments.begin();
7083	it != mHDData->mAttachments.end(); ++ it)
7084	{
7085	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
7086
7087	if ((*it)->isImplicit())
7088	{
7089	/* convert implicit attachment to normal */
7090	(*it)->setImplicit (false);
7091
7092	if (aOnline)
7093	{
7094	rc = hd->LockWrite (NULL);
7095	AssertComRC (rc);
7096
7097	/* also, relock the old hard disk which is a base for the
7098	* new diff for reading if the VM is online */
7099
7100	ComObjPtr <HardDisk2> parent = hd->parent();
7101	/* make the relock atomic */
7102	AutoWriteLock parentLock (parent);
7103	rc = parent->UnlockWrite (NULL);
7104	AssertComRC (rc);
7105	rc = parent->LockRead (NULL);
7106	AssertComRC (rc);
7107	}
7108
7109	continue;
7110	}
7111
7112	/* was this hard disk attached before? */
7113	HDData::AttachmentList::iterator oldIt =
7114	std::find_if (oldAtts.begin(), oldAtts.end(),
7115	HardDisk2Attachment::RefersTo (hd));
7116	if (oldIt != oldAtts.end())
7117	{
7118	/* yes: remove from old to avoid de-association */
7119	oldAtts.erase (oldIt);
7120	}
7121	}
7122
7123	/* enumerate remaining old attachments and de-associate from the
7124	* current machine state */
7125	for (HDData::AttachmentList::const_iterator it = oldAtts.begin();
7126	it != oldAtts.end(); ++ it)
7127	{
7128	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
7129
7130	/* now de-associate from the current machine state */
7131	rc = hd->detachFrom (mData->mUuid);
7132	AssertComRC (rc);
7133
7134	if (aOnline)
7135	{
7136	/* unlock since not used anymore */
7137	MediaState_T state;
7138	rc = hd->UnlockWrite (&state);
7139	/* the disk may be alredy relocked for reading above */
7140	Assert (SUCCEEDED (rc) \|\| state == MediaState_LockedRead);
7141	}
7142	}
7143
7144	/* commit the hard disk changes */
7145	mHDData.commit();
7146
7147	if (mType == IsSessionMachine)
7148	{
7149	/* attach new data to the primary machine and reshare it */
7150	mPeer->mHDData.attach (mHDData);
7151	}
7152	}
7153	else
7154	{
7155	deleteImplicitDiffs();
7156	}
7157
7158	return;
7159	}
7160
7161	/**
7162	* Helper to lock the machine configuration for write access.
7163	*
7164	* @return S_OK or E_FAIL and sets error info on failure
7165	*
7166	* @note Doesn't lock anything (must be called from this object's lock)
7167	*/
7168	HRESULT Machine::lockConfig()
7169	{
7170	HRESULT rc = S_OK;
7171
7172	if (!isConfigLocked())
7173	{
7174	/* open the associated config file */
7175	int vrc = RTFileOpen (&mData->mHandleCfgFile,
7176	Utf8Str (mData->mConfigFileFull),
7177	RTFILE_O_READWRITE \| RTFILE_O_OPEN \|
7178	RTFILE_O_DENY_WRITE);
7179	if (RT_FAILURE (vrc))
7180	{
7181	mData->mHandleCfgFile = NIL_RTFILE;
7182
7183	rc = setError (E_FAIL,
7184	tr ("Could not lock the settings file '%ls' (%Rrc)"),
7185	mData->mConfigFileFull.raw(), vrc);
7186	}
7187	}
7188
7189	LogFlowThisFunc (("mConfigFile={%ls}, mHandleCfgFile=%d, rc=%08X\n",
7190	mData->mConfigFileFull.raw(), mData->mHandleCfgFile, rc));
7191	return rc;
7192	}
7193
7194	/**
7195	* Helper to unlock the machine configuration from write access
7196	*
7197	* @return S_OK
7198	*
7199	* @note Doesn't lock anything.
7200	* @note Not thread safe (must be called from this object's lock).
7201	*/
7202	HRESULT Machine::unlockConfig()
7203	{
7204	HRESULT rc = S_OK;
7205
7206	if (isConfigLocked())
7207	{
7208	RTFileFlush (mData->mHandleCfgFile);
7209	RTFileClose (mData->mHandleCfgFile);
7210	/** @todo flush the directory. */
7211	mData->mHandleCfgFile = NIL_RTFILE;
7212	}
7213
7214	LogFlowThisFunc (("\n"));
7215
7216	return rc;
7217	}
7218
7219	/**
7220	* Returns true if the settings file is located in the directory named exactly
7221	* as the machine. This will be true if the machine settings structure was
7222	* created by default in #openConfigLoader().
7223	*
7224	* @param aSettingsDir if not NULL, the full machine settings file directory
7225	* name will be assigned there.
7226	*
7227	* @note Doesn't lock anything.
7228	* @note Not thread safe (must be called from this object's lock).
7229	*/
7230	bool Machine::isInOwnDir (Utf8Str aSettingsDir / = NULL */)
7231	{
7232	Utf8Str settingsDir = mData->mConfigFileFull;
7233	RTPathStripFilename (settingsDir.mutableRaw());
7234	char *dirName = RTPathFilename (settingsDir);
7235
7236	AssertReturn (dirName, false);
7237
7238	/* if we don't rename anything on name change, return false shorlty */
7239	if (!mUserData->mNameSync)
7240	return false;
7241
7242	if (aSettingsDir)
7243	*aSettingsDir = settingsDir;
7244
7245	return Bstr (dirName) == mUserData->mName;
7246	}
7247
7248	/**
7249	* @note Locks objects for reading!
7250	*/
7251	bool Machine::isModified()
7252	{
7253	AutoCaller autoCaller (this);
7254	AssertComRCReturn (autoCaller.rc(), false);
7255
7256	AutoReadLock alock (this);
7257
7258	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7259	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isModified())
7260	return true;
7261
7262	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7263	if (mSerialPorts [slot] && mSerialPorts [slot]->isModified())
7264	return true;
7265
7266	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7267	if (mParallelPorts [slot] && mParallelPorts [slot]->isModified())
7268	return true;
7269
7270	return
7271	mUserData.isBackedUp() \|\|
7272	mHWData.isBackedUp() \|\|
7273	mHDData.isBackedUp() \|\|
7274	#ifdef VBOX_WITH_VRDP
7275	(mVRDPServer && mVRDPServer->isModified()) \|\|
7276	#endif
7277	(mDVDDrive && mDVDDrive->isModified()) \|\|
7278	(mFloppyDrive && mFloppyDrive->isModified()) \|\|
7279	(mAudioAdapter && mAudioAdapter->isModified()) \|\|
7280	(mUSBController && mUSBController->isModified()) \|\|
7281	(mSATAController && mSATAController->isModified()) \|\|
7282	(mBIOSSettings && mBIOSSettings->isModified());
7283	}
7284
7285	/**
7286	* Returns the logical OR of data.hasActualChanges() of this and all child
7287	* objects.
7288	*
7289	* @param aIgnoreUserData @c true to ignore changes to mUserData
7290	*
7291	* @note Locks objects for reading!
7292	*/
7293	bool Machine::isReallyModified (bool aIgnoreUserData /* = false */)
7294	{
7295	AutoCaller autoCaller (this);
7296	AssertComRCReturn (autoCaller.rc(), false);
7297
7298	AutoReadLock alock (this);
7299
7300	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7301	if (mNetworkAdapters [slot] && mNetworkAdapters [slot]->isReallyModified())
7302	return true;
7303
7304	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7305	if (mSerialPorts [slot] && mSerialPorts [slot]->isReallyModified())
7306	return true;
7307
7308	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7309	if (mParallelPorts [slot] && mParallelPorts [slot]->isReallyModified())
7310	return true;
7311
7312	return
7313	(!aIgnoreUserData && mUserData.hasActualChanges()) \|\|
7314	mHWData.hasActualChanges() \|\|
7315	mHDData.hasActualChanges() \|\|
7316	#ifdef VBOX_WITH_VRDP
7317	(mVRDPServer && mVRDPServer->isReallyModified()) \|\|
7318	#endif
7319	(mDVDDrive && mDVDDrive->isReallyModified()) \|\|
7320	(mFloppyDrive && mFloppyDrive->isReallyModified()) \|\|
7321	(mAudioAdapter && mAudioAdapter->isReallyModified()) \|\|
7322	(mUSBController && mUSBController->isReallyModified()) \|\|
7323	(mSATAController && mSATAController->isReallyModified()) \|\|
7324	(mBIOSSettings && mBIOSSettings->isReallyModified());
7325	}
7326
7327	/**
7328	* Discards all changes to machine settings.
7329	*
7330	* @param aNotify Whether to notify the direct session about changes or not.
7331	*
7332	* @note Locks objects for writing!
7333	*/
7334	void Machine::rollback (bool aNotify)
7335	{
7336	AutoCaller autoCaller (this);
7337	AssertComRCReturn (autoCaller.rc(), (void) 0);
7338
7339	AutoWriteLock alock (this);
7340
7341	/* check for changes in own data */
7342
7343	bool sharedFoldersChanged = false;
7344
7345	if (aNotify && mHWData.isBackedUp())
7346	{
7347	if (mHWData->mSharedFolders.size() !=
7348	mHWData.backedUpData()->mSharedFolders.size())
7349	sharedFoldersChanged = true;
7350	else
7351	{
7352	for (HWData::SharedFolderList::iterator rit =
7353	mHWData->mSharedFolders.begin();
7354	rit != mHWData->mSharedFolders.end() && !sharedFoldersChanged;
7355	++ rit)
7356	{
7357	for (HWData::SharedFolderList::iterator cit =
7358	mHWData.backedUpData()->mSharedFolders.begin();
7359	cit != mHWData.backedUpData()->mSharedFolders.end();
7360	++ cit)
7361	{
7362	if ((cit)->name() != (rit)->name() \|\|
7363	(cit)->hostPath() != (rit)->hostPath())
7364	{
7365	sharedFoldersChanged = true;
7366	break;
7367	}
7368	}
7369	}
7370	}
7371	}
7372
7373	mUserData.rollback();
7374
7375	mHWData.rollback();
7376
7377	if (mHDData.isBackedUp())
7378	fixupHardDisks2 (false /* aCommit */);
7379
7380	/* check for changes in child objects */
7381
7382	bool vrdpChanged = false, dvdChanged = false, floppyChanged = false,
7383	usbChanged = false, sataChanged = false;
7384
7385	ComPtr <INetworkAdapter> networkAdapters [RT_ELEMENTS (mNetworkAdapters)];
7386	ComPtr <ISerialPort> serialPorts [RT_ELEMENTS (mSerialPorts)];
7387	ComPtr <IParallelPort> parallelPorts [RT_ELEMENTS (mParallelPorts)];
7388
7389	if (mBIOSSettings)
7390	mBIOSSettings->rollback();
7391
7392	#ifdef VBOX_WITH_VRDP
7393	if (mVRDPServer)
7394	vrdpChanged = mVRDPServer->rollback();
7395	#endif
7396
7397	if (mDVDDrive)
7398	dvdChanged = mDVDDrive->rollback();
7399
7400	if (mFloppyDrive)
7401	floppyChanged = mFloppyDrive->rollback();
7402
7403	if (mAudioAdapter)
7404	mAudioAdapter->rollback();
7405
7406	if (mUSBController)
7407	usbChanged = mUSBController->rollback();
7408
7409	if (mSATAController)
7410	sataChanged = mSATAController->rollback();
7411
7412	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7413	if (mNetworkAdapters [slot])
7414	if (mNetworkAdapters [slot]->rollback())
7415	networkAdapters [slot] = mNetworkAdapters [slot];
7416
7417	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7418	if (mSerialPorts [slot])
7419	if (mSerialPorts [slot]->rollback())
7420	serialPorts [slot] = mSerialPorts [slot];
7421
7422	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7423	if (mParallelPorts [slot])
7424	if (mParallelPorts [slot]->rollback())
7425	parallelPorts [slot] = mParallelPorts [slot];
7426
7427	if (aNotify)
7428	{
7429	/* inform the direct session about changes */
7430
7431	ComObjPtr <Machine> that = this;
7432	alock.leave();
7433
7434	if (sharedFoldersChanged)
7435	that->onSharedFolderChange();
7436
7437	if (vrdpChanged)
7438	that->onVRDPServerChange();
7439	if (dvdChanged)
7440	that->onDVDDriveChange();
7441	if (floppyChanged)
7442	that->onFloppyDriveChange();
7443	if (usbChanged)
7444	that->onUSBControllerChange();
7445	if (sataChanged)
7446	that->onSATAControllerChange();
7447
7448	for (ULONG slot = 0; slot < RT_ELEMENTS (networkAdapters); slot ++)
7449	if (networkAdapters [slot])
7450	that->onNetworkAdapterChange (networkAdapters [slot]);
7451	for (ULONG slot = 0; slot < RT_ELEMENTS (serialPorts); slot ++)
7452	if (serialPorts [slot])
7453	that->onSerialPortChange (serialPorts [slot]);
7454	for (ULONG slot = 0; slot < RT_ELEMENTS (parallelPorts); slot ++)
7455	if (parallelPorts [slot])
7456	that->onParallelPortChange (parallelPorts [slot]);
7457	}
7458	}
7459
7460	/**
7461	* Commits all the changes to machine settings.
7462	*
7463	* Note that this operation is supposed to never fail.
7464	*
7465	* @note Locks this object and children for writing.
7466	*/
7467	void Machine::commit()
7468	{
7469	AutoCaller autoCaller (this);
7470	AssertComRCReturnVoid (autoCaller.rc());
7471
7472	AutoWriteLock alock (this);
7473
7474	/*
7475	* use safe commit to ensure Snapshot machines (that share mUserData)
7476	* will still refer to a valid memory location
7477	*/
7478	mUserData.commitCopy();
7479
7480	mHWData.commit();
7481
7482	if (mHDData.isBackedUp())
7483	fixupHardDisks2 (true /* aCommit */);
7484
7485	mBIOSSettings->commit();
7486	#ifdef VBOX_WITH_VRDP
7487	mVRDPServer->commit();
7488	#endif
7489	mDVDDrive->commit();
7490	mFloppyDrive->commit();
7491	mAudioAdapter->commit();
7492	mUSBController->commit();
7493	mSATAController->commit();
7494
7495	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7496	mNetworkAdapters [slot]->commit();
7497	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7498	mSerialPorts [slot]->commit();
7499	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7500	mParallelPorts [slot]->commit();
7501
7502	if (mType == IsSessionMachine)
7503	{
7504	/* attach new data to the primary machine and reshare it */
7505	mPeer->mUserData.attach (mUserData);
7506	mPeer->mHWData.attach (mHWData);
7507	/* mHDData is reshared by fixupHardDisks2 */
7508	// mPeer->mHDData.attach (mHDData);
7509	Assert (mPeer->mHDData.data() == mHDData.data());
7510	}
7511	}
7512
7513	/**
7514	* Copies all the hardware data from the given machine.
7515	*
7516	* Currently, only called when the VM is being restored from a snapshot. In
7517	* particular, this implies that the VM is not running during this method's
7518	* call.
7519	*
7520	* @note This method must be called from under this object's lock.
7521	*
7522	* @note This method doesn't call #commit(), so all data remains backed up and
7523	* unsaved.
7524	*/
7525	void Machine::copyFrom (Machine *aThat)
7526	{
7527	AssertReturnVoid (mType == IsMachine \|\| mType == IsSessionMachine);
7528	AssertReturnVoid (aThat->mType == IsSnapshotMachine);
7529
7530	AssertReturnVoid (!Global::IsOnline (mData->mMachineState));
7531
7532	mHWData.assignCopy (aThat->mHWData);
7533
7534	// create copies of all shared folders (mHWData after attiching a copy
7535	// contains just references to original objects)
7536	for (HWData::SharedFolderList::iterator it = mHWData->mSharedFolders.begin();
7537	it != mHWData->mSharedFolders.end();
7538	++ it)
7539	{
7540	ComObjPtr <SharedFolder> folder;
7541	folder.createObject();
7542	HRESULT rc = folder->initCopy (machine(), *it);
7543	AssertComRC (rc);
7544	*it = folder;
7545	}
7546
7547	mBIOSSettings->copyFrom (aThat->mBIOSSettings);
7548	#ifdef VBOX_WITH_VRDP
7549	mVRDPServer->copyFrom (aThat->mVRDPServer);
7550	#endif
7551	mDVDDrive->copyFrom (aThat->mDVDDrive);
7552	mFloppyDrive->copyFrom (aThat->mFloppyDrive);
7553	mAudioAdapter->copyFrom (aThat->mAudioAdapter);
7554	mUSBController->copyFrom (aThat->mUSBController);
7555	mSATAController->copyFrom (aThat->mSATAController);
7556
7557	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7558	mNetworkAdapters [slot]->copyFrom (aThat->mNetworkAdapters [slot]);
7559	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7560	mSerialPorts [slot]->copyFrom (aThat->mSerialPorts [slot]);
7561	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7562	mParallelPorts [slot]->copyFrom (aThat->mParallelPorts [slot]);
7563	}
7564
7565	#ifdef VBOX_WITH_RESOURCE_USAGE_API
7566	void Machine::registerMetrics (PerformanceCollector aCollector, Machine aMachine, RTPROCESS pid)
7567	{
7568	pm::CollectorHAL *hal = aCollector->getHAL();
7569	/* Create sub metrics */
7570	pm::SubMetric *cpuLoadUser = new pm::SubMetric ("CPU/Load/User",
7571	"Percentage of processor time spent in user mode by VM process.");
7572	pm::SubMetric *cpuLoadKernel = new pm::SubMetric ("CPU/Load/Kernel",
7573	"Percentage of processor time spent in kernel mode by VM process.");
7574	pm::SubMetric *ramUsageUsed = new pm::SubMetric ("RAM/Usage/Used",
7575	"Size of resident portion of VM process in memory.");
7576	/* Create and register base metrics */
7577	IUnknown *objptr;
7578
7579	ComObjPtr<Machine> tmp = aMachine;
7580	tmp.queryInterfaceTo (&objptr);
7581	pm::BaseMetric *cpuLoad = new pm::MachineCpuLoadRaw (hal, objptr, pid,
7582	cpuLoadUser, cpuLoadKernel);
7583	aCollector->registerBaseMetric (cpuLoad);
7584	pm::BaseMetric *ramUsage = new pm::MachineRamUsage (hal, objptr, pid,
7585	ramUsageUsed);
7586	aCollector->registerBaseMetric (ramUsage);
7587
7588	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser, 0));
7589	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
7590	new pm::AggregateAvg()));
7591	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
7592	new pm::AggregateMin()));
7593	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadUser,
7594	new pm::AggregateMax()));
7595	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel, 0));
7596	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
7597	new pm::AggregateAvg()));
7598	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
7599	new pm::AggregateMin()));
7600	aCollector->registerMetric (new pm::Metric (cpuLoad, cpuLoadKernel,
7601	new pm::AggregateMax()));
7602
7603	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed, 0));
7604	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
7605	new pm::AggregateAvg()));
7606	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
7607	new pm::AggregateMin()));
7608	aCollector->registerMetric (new pm::Metric (ramUsage, ramUsageUsed,
7609	new pm::AggregateMax()));
7610	};
7611
7612	void Machine::unregisterMetrics (PerformanceCollector aCollector, Machine aMachine)
7613	{
7614	aCollector->unregisterMetricsFor (aMachine);
7615	aCollector->unregisterBaseMetricsFor (aMachine);
7616	};
7617	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
7618
7619
7620	/////////////////////////////////////////////////////////////////////////////
7621	// SessionMachine class
7622	/////////////////////////////////////////////////////////////////////////////
7623
7624	/** Task structure for asynchronous VM operations */
7625	struct SessionMachine::Task
7626	{
7627	Task (SessionMachine m, Progress p)
7628	: machine (m), progress (p)
7629	, state (m->mData->mMachineState) // save the current machine state
7630	, subTask (false)
7631	{}
7632
7633	void modifyLastState (MachineState_T s)
7634	{
7635	const_cast <MachineState_T > (&state) = s;
7636	}
7637
7638	virtual void handler() = 0;
7639
7640	ComObjPtr <SessionMachine> machine;
7641	ComObjPtr <Progress> progress;
7642	const MachineState_T state;
7643
7644	bool subTask : 1;
7645	};
7646
7647	/** Take snapshot task */
7648	struct SessionMachine::TakeSnapshotTask : public SessionMachine::Task
7649	{
7650	TakeSnapshotTask (SessionMachine *m)
7651	: Task (m, NULL) {}
7652
7653	void handler() { machine->takeSnapshotHandler (*this); }
7654	};
7655
7656	/** Discard snapshot task */
7657	struct SessionMachine::DiscardSnapshotTask : public SessionMachine::Task
7658	{
7659	DiscardSnapshotTask (SessionMachine m, Progress p, Snapshot *s)
7660	: Task (m, p)
7661	, snapshot (s) {}
7662
7663	DiscardSnapshotTask (const Task &task, Snapshot *s)
7664	: Task (task)
7665	, snapshot (s) {}
7666
7667	void handler() { machine->discardSnapshotHandler (*this); }
7668
7669	ComObjPtr <Snapshot> snapshot;
7670	};
7671
7672	/** Discard current state task */
7673	struct SessionMachine::DiscardCurrentStateTask : public SessionMachine::Task
7674	{
7675	DiscardCurrentStateTask (SessionMachine m, Progress p,
7676	bool discardCurSnapshot)
7677	: Task (m, p), discardCurrentSnapshot (discardCurSnapshot) {}
7678
7679	void handler() { machine->discardCurrentStateHandler (*this); }
7680
7681	const bool discardCurrentSnapshot;
7682	};
7683
7684	////////////////////////////////////////////////////////////////////////////////
7685
7686	DEFINE_EMPTY_CTOR_DTOR (SessionMachine)
7687
7688	HRESULT SessionMachine::FinalConstruct()
7689	{
7690	LogFlowThisFunc (("\n"));
7691
7692	/* set the proper type to indicate we're the SessionMachine instance */
7693	unconst (mType) = IsSessionMachine;
7694
7695	#if defined(RT_OS_WINDOWS)
7696	mIPCSem = NULL;
7697	#elif defined(RT_OS_OS2)
7698	mIPCSem = NULLHANDLE;
7699	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7700	mIPCSem = -1;
7701	#else
7702	# error "Port me!"
7703	#endif
7704
7705	return S_OK;
7706	}
7707
7708	void SessionMachine::FinalRelease()
7709	{
7710	LogFlowThisFunc (("\n"));
7711
7712	uninit (Uninit::Unexpected);
7713	}
7714
7715	/**
7716	* @note Must be called only by Machine::openSession() from its own write lock.
7717	*/
7718	HRESULT SessionMachine::init (Machine *aMachine)
7719	{
7720	LogFlowThisFuncEnter();
7721	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
7722
7723	AssertReturn (aMachine, E_INVALIDARG);
7724
7725	AssertReturn (aMachine->lockHandle()->isWriteLockOnCurrentThread(), E_FAIL);
7726
7727	/* Enclose the state transition NotReady->InInit->Ready */
7728	AutoInitSpan autoInitSpan (this);
7729	AssertReturn (autoInitSpan.isOk(), E_FAIL);
7730
7731	/* create the interprocess semaphore */
7732	#if defined(RT_OS_WINDOWS)
7733	mIPCSemName = aMachine->mData->mConfigFileFull;
7734	for (size_t i = 0; i < mIPCSemName.length(); i++)
7735	if (mIPCSemName[i] == '\\')
7736	mIPCSemName[i] = '/';
7737	mIPCSem = ::CreateMutex (NULL, FALSE, mIPCSemName);
7738	ComAssertMsgRet (mIPCSem,
7739	("Cannot create IPC mutex '%ls', err=%d",
7740	mIPCSemName.raw(), ::GetLastError()),
7741	E_FAIL);
7742	#elif defined(RT_OS_OS2)
7743	Utf8Str ipcSem = Utf8StrFmt ("\\SEM32\\VBOX\\VM\\{%RTuuid}",
7744	aMachine->mData->mUuid.raw());
7745	mIPCSemName = ipcSem;
7746	APIRET arc = ::DosCreateMutexSem ((PSZ) ipcSem.raw(), &mIPCSem, 0, FALSE);
7747	ComAssertMsgRet (arc == NO_ERROR,
7748	("Cannot create IPC mutex '%s', arc=%ld",
7749	ipcSem.raw(), arc),
7750	E_FAIL);
7751	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7752	Utf8Str configFile = aMachine->mData->mConfigFileFull;
7753	char *configFileCP = NULL;
7754	int error;
7755	RTStrUtf8ToCurrentCP (&configFileCP, configFile);
7756	key_t key = ::ftok (configFileCP, 'V');
7757	RTStrFree (configFileCP);
7758	mIPCSem = ::semget (key, 1, S_IRWXU \| S_IRWXG \| S_IRWXO \| IPC_CREAT);
7759	error = errno;
7760	if (mIPCSem < 0 && error == ENOSYS)
7761	{
7762	setError (E_FAIL,
7763	tr ("Cannot create IPC semaphore. Most likely your host kernel lacks "
7764	"support for SysV IPC. Check the host kernel configuration for "
7765	"CONFIG_SYSVIPC=y"));
7766	return E_FAIL;
7767	}
7768	ComAssertMsgRet (mIPCSem >= 0, ("Cannot create IPC semaphore, errno=%d", error),
7769	E_FAIL);
7770	/* set the initial value to 1 */
7771	int rv = ::semctl (mIPCSem, 0, SETVAL, 1);
7772	ComAssertMsgRet (rv == 0, ("Cannot init IPC semaphore, errno=%d", errno),
7773	E_FAIL);
7774	#else
7775	# error "Port me!"
7776	#endif
7777
7778	/* memorize the peer Machine */
7779	unconst (mPeer) = aMachine;
7780	/* share the parent pointer */
7781	unconst (mParent) = aMachine->mParent;
7782
7783	/* take the pointers to data to share */
7784	mData.share (aMachine->mData);
7785	mSSData.share (aMachine->mSSData);
7786
7787	mUserData.share (aMachine->mUserData);
7788	mHWData.share (aMachine->mHWData);
7789	mHDData.share (aMachine->mHDData);
7790
7791	unconst (mBIOSSettings).createObject();
7792	mBIOSSettings->init (this, aMachine->mBIOSSettings);
7793	#ifdef VBOX_WITH_VRDP
7794	/* create another VRDPServer object that will be mutable */
7795	unconst (mVRDPServer).createObject();
7796	mVRDPServer->init (this, aMachine->mVRDPServer);
7797	#endif
7798	/* create another DVD drive object that will be mutable */
7799	unconst (mDVDDrive).createObject();
7800	mDVDDrive->init (this, aMachine->mDVDDrive);
7801	/* create another floppy drive object that will be mutable */
7802	unconst (mFloppyDrive).createObject();
7803	mFloppyDrive->init (this, aMachine->mFloppyDrive);
7804	/* create another audio adapter object that will be mutable */
7805	unconst (mAudioAdapter).createObject();
7806	mAudioAdapter->init (this, aMachine->mAudioAdapter);
7807	/* create a list of serial ports that will be mutable */
7808	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
7809	{
7810	unconst (mSerialPorts [slot]).createObject();
7811	mSerialPorts [slot]->init (this, aMachine->mSerialPorts [slot]);
7812	}
7813	/* create a list of parallel ports that will be mutable */
7814	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
7815	{
7816	unconst (mParallelPorts [slot]).createObject();
7817	mParallelPorts [slot]->init (this, aMachine->mParallelPorts [slot]);
7818	}
7819	/* create another USB controller object that will be mutable */
7820	unconst (mUSBController).createObject();
7821	mUSBController->init (this, aMachine->mUSBController);
7822	/* create another SATA controller object that will be mutable */
7823	unconst (mSATAController).createObject();
7824	mSATAController->init (this, aMachine->mSATAController);
7825	/* create a list of network adapters that will be mutable */
7826	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
7827	{
7828	unconst (mNetworkAdapters [slot]).createObject();
7829	mNetworkAdapters [slot]->init (this, aMachine->mNetworkAdapters [slot]);
7830	}
7831
7832	/* Confirm a successful initialization when it's the case */
7833	autoInitSpan.setSucceeded();
7834
7835	LogFlowThisFuncLeave();
7836	return S_OK;
7837	}
7838
7839	/**
7840	* Uninitializes this session object. If the reason is other than
7841	* Uninit::Unexpected, then this method MUST be called from #checkForDeath().
7842	*
7843	* @param aReason uninitialization reason
7844	*
7845	* @note Locks mParent + this object for writing.
7846	*/
7847	void SessionMachine::uninit (Uninit::Reason aReason)
7848	{
7849	LogFlowThisFuncEnter();
7850	LogFlowThisFunc (("reason=%d\n", aReason));
7851
7852	/*
7853	* Strongly reference ourselves to prevent this object deletion after
7854	* mData->mSession.mMachine.setNull() below (which can release the last
7855	* reference and call the destructor). Important: this must be done before
7856	* accessing any members (and before AutoUninitSpan that does it as well).
7857	* This self reference will be released as the very last step on return.
7858	*/
7859	ComObjPtr <SessionMachine> selfRef = this;
7860
7861	/* Enclose the state transition Ready->InUninit->NotReady */
7862	AutoUninitSpan autoUninitSpan (this);
7863	if (autoUninitSpan.uninitDone())
7864	{
7865	LogFlowThisFunc (("Already uninitialized\n"));
7866	LogFlowThisFuncLeave();
7867	return;
7868	}
7869
7870	if (autoUninitSpan.initFailed())
7871	{
7872	/* We've been called by init() because it's failed. It's not really
7873	* necessary (nor it's safe) to perform the regular uninit sequense
7874	* below, the following is enough.
7875	*/
7876	LogFlowThisFunc (("Initialization failed.\n"));
7877	#if defined(RT_OS_WINDOWS)
7878	if (mIPCSem)
7879	::CloseHandle (mIPCSem);
7880	mIPCSem = NULL;
7881	#elif defined(RT_OS_OS2)
7882	if (mIPCSem != NULLHANDLE)
7883	::DosCloseMutexSem (mIPCSem);
7884	mIPCSem = NULLHANDLE;
7885	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
7886	if (mIPCSem >= 0)
7887	::semctl (mIPCSem, 0, IPC_RMID);
7888	mIPCSem = -1;
7889	#else
7890	# error "Port me!"
7891	#endif
7892	uninitDataAndChildObjects();
7893	mData.free();
7894	unconst (mParent).setNull();
7895	unconst (mPeer).setNull();
7896	LogFlowThisFuncLeave();
7897	return;
7898	}
7899
7900	/* We need to lock this object in uninit() because the lock is shared
7901	* with mPeer (as well as data we modify below). mParent->addProcessToReap()
7902	* and others need mParent lock. */
7903	AutoMultiWriteLock2 alock (mParent, this);
7904
7905	#ifdef VBOX_WITH_RESOURCE_USAGE_API
7906	unregisterMetrics (mParent->performanceCollector(), mPeer);
7907	#endif /* VBOX_WITH_RESOURCE_USAGE_API */
7908
7909	MachineState_T lastState = mData->mMachineState;
7910
7911	if (aReason == Uninit::Abnormal)
7912	{
7913	LogWarningThisFunc (("ABNORMAL client termination! (wasBusy=%d)\n",
7914	Global::IsOnlineOrTransient (lastState)));
7915
7916	/* reset the state to Aborted */
7917	if (mData->mMachineState != MachineState_Aborted)
7918	setMachineState (MachineState_Aborted);
7919	}
7920
7921	if (isModified())
7922	{
7923	LogWarningThisFunc (("Discarding unsaved settings changes!\n"));
7924	rollback (false /* aNotify */);
7925	}
7926
7927	Assert (!mSnapshotData.mStateFilePath \|\| !mSnapshotData.mSnapshot);
7928	if (mSnapshotData.mStateFilePath)
7929	{
7930	LogWarningThisFunc (("canceling failed save state request!\n"));
7931	endSavingState (FALSE /* aSuccess */);
7932	}
7933	else if (!mSnapshotData.mSnapshot.isNull())
7934	{
7935	LogWarningThisFunc (("canceling untaken snapshot!\n"));
7936	endTakingSnapshot (FALSE /* aSuccess */);
7937	}
7938
7939	#ifdef VBOX_WITH_USB
7940	/* release all captured USB devices */
7941	if (aReason == Uninit::Abnormal && Global::IsOnline (lastState))
7942	{
7943	/* Console::captureUSBDevices() is called in the VM process only after
7944	* setting the machine state to Starting or Restoring.
7945	* Console::detachAllUSBDevices() will be called upon successful
7946	* termination. So, we need to release USB devices only if there was
7947	* an abnormal termination of a running VM.
7948	*
7949	* This is identical to SessionMachine::DetachAllUSBDevices except
7950	* for the aAbnormal argument. */
7951	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
7952	AssertComRC (rc);
7953	NOREF (rc);
7954
7955	USBProxyService *service = mParent->host()->usbProxyService();
7956	if (service)
7957	service->detachAllDevicesFromVM (this, true /* aDone /, true / aAbnormal */);
7958	}
7959	#endif /* VBOX_WITH_USB */
7960
7961	if (!mData->mSession.mType.isNull())
7962	{
7963	/* mType is not null when this machine's process has been started by
7964	* VirtualBox::OpenRemoteSession(), therefore it is our child. We
7965	* need to queue the PID to reap the process (and avoid zombies on
7966	* Linux). */
7967	Assert (mData->mSession.mPid != NIL_RTPROCESS);
7968	mParent->addProcessToReap (mData->mSession.mPid);
7969	}
7970
7971	mData->mSession.mPid = NIL_RTPROCESS;
7972
7973	if (aReason == Uninit::Unexpected)
7974	{
7975	/* Uninitialization didn't come from #checkForDeath(), so tell the
7976	* client watcher thread to update the set of machines that have open
7977	* sessions. */
7978	mParent->updateClientWatcher();
7979	}
7980
7981	/* uninitialize all remote controls */
7982	if (mData->mSession.mRemoteControls.size())
7983	{
7984	LogFlowThisFunc (("Closing remote sessions (%d):\n",
7985	mData->mSession.mRemoteControls.size()));
7986
7987	Data::Session::RemoteControlList::iterator it =
7988	mData->mSession.mRemoteControls.begin();
7989	while (it != mData->mSession.mRemoteControls.end())
7990	{
7991	LogFlowThisFunc ((" Calling remoteControl->Uninitialize()...\n"));
7992	HRESULT rc = (*it)->Uninitialize();
7993	LogFlowThisFunc ((" remoteControl->Uninitialize() returned %08X\n", rc));
7994	if (FAILED (rc))
7995	LogWarningThisFunc (("Forgot to close the remote session?\n"));
7996	++ it;
7997	}
7998	mData->mSession.mRemoteControls.clear();
7999	}
8000
8001	/*
8002	* An expected uninitialization can come only from #checkForDeath().
8003	* Otherwise it means that something's got really wrong (for examlple,
8004	* the Session implementation has released the VirtualBox reference
8005	* before it triggered #OnSessionEnd(), or before releasing IPC semaphore,
8006	* etc). However, it's also possible, that the client releases the IPC
8007	* semaphore correctly (i.e. before it releases the VirtualBox reference),
8008	* but the VirtualBox release event comes first to the server process.
8009	* This case is practically possible, so we should not assert on an
8010	* unexpected uninit, just log a warning.
8011	*/
8012
8013	if ((aReason == Uninit::Unexpected))
8014	LogWarningThisFunc (("Unexpected SessionMachine uninitialization!\n"));
8015
8016	if (aReason != Uninit::Normal)
8017	{
8018	mData->mSession.mDirectControl.setNull();
8019	}
8020	else
8021	{
8022	/* this must be null here (see #OnSessionEnd()) */
8023	Assert (mData->mSession.mDirectControl.isNull());
8024	Assert (mData->mSession.mState == SessionState_Closing);
8025	Assert (!mData->mSession.mProgress.isNull());
8026
8027	mData->mSession.mProgress->notifyComplete (S_OK);
8028	mData->mSession.mProgress.setNull();
8029	}
8030
8031	/* remove the association between the peer machine and this session machine */
8032	Assert (mData->mSession.mMachine == this \|\|
8033	aReason == Uninit::Unexpected);
8034
8035	/* reset the rest of session data */
8036	mData->mSession.mMachine.setNull();
8037	mData->mSession.mState = SessionState_Closed;
8038	mData->mSession.mType.setNull();
8039
8040	/* close the interprocess semaphore before leaving the shared lock */
8041	#if defined(RT_OS_WINDOWS)
8042	if (mIPCSem)
8043	::CloseHandle (mIPCSem);
8044	mIPCSem = NULL;
8045	#elif defined(RT_OS_OS2)
8046	if (mIPCSem != NULLHANDLE)
8047	::DosCloseMutexSem (mIPCSem);
8048	mIPCSem = NULLHANDLE;
8049	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8050	if (mIPCSem >= 0)
8051	::semctl (mIPCSem, 0, IPC_RMID);
8052	mIPCSem = -1;
8053	#else
8054	# error "Port me!"
8055	#endif
8056
8057	/* fire an event */
8058	mParent->onSessionStateChange (mData->mUuid, SessionState_Closed);
8059
8060	uninitDataAndChildObjects();
8061
8062	/* free the essential data structure last */
8063	mData.free();
8064
8065	/* leave the shared lock before setting the below two to NULL */
8066	alock.leave();
8067
8068	unconst (mParent).setNull();
8069	unconst (mPeer).setNull();
8070
8071	LogFlowThisFuncLeave();
8072	}
8073
8074	// util::Lockable interface
8075	////////////////////////////////////////////////////////////////////////////////
8076
8077	/**
8078	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
8079	* with the primary Machine instance (mPeer).
8080	*/
8081	RWLockHandle *SessionMachine::lockHandle() const
8082	{
8083	AssertReturn (!mPeer.isNull(), NULL);
8084	return mPeer->lockHandle();
8085	}
8086
8087	// IInternalMachineControl methods
8088	////////////////////////////////////////////////////////////////////////////////
8089
8090	/**
8091	* @note Locks the same as #setMachineState() does.
8092	*/
8093	STDMETHODIMP SessionMachine::UpdateState (MachineState_T aMachineState)
8094	{
8095	return setMachineState (aMachineState);
8096	}
8097
8098	/**
8099	* @note Locks this object for reading.
8100	*/
8101	STDMETHODIMP SessionMachine::GetIPCId (BSTR *aId)
8102	{
8103	AutoCaller autoCaller (this);
8104	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8105
8106	AutoReadLock alock (this);
8107
8108	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
8109	mIPCSemName.cloneTo (aId);
8110	return S_OK;
8111	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
8112	mData->mConfigFileFull.cloneTo (aId);
8113	return S_OK;
8114	#else
8115	# error "Port me!"
8116	#endif
8117	}
8118
8119	/**
8120	* Goes through the USB filters of the given machine to see if the given
8121	* device matches any filter or not.
8122	*
8123	* @note Locks the same as USBController::hasMatchingFilter() does.
8124	*/
8125	STDMETHODIMP SessionMachine::RunUSBDeviceFilters (IUSBDevice *aUSBDevice,
8126	BOOL *aMatched,
8127	ULONG *aMaskedIfs)
8128	{
8129	LogFlowThisFunc (("\n"));
8130
8131	CheckComArgNotNull (aUSBDevice);
8132	CheckComArgOutPointerValid (aMatched);
8133
8134	AutoCaller autoCaller (this);
8135	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8136
8137	#ifdef VBOX_WITH_USB
8138	*aMatched = mUSBController->hasMatchingFilter (aUSBDevice, aMaskedIfs);
8139	#else
8140	*aMatched = FALSE;
8141	#endif
8142
8143	return S_OK;
8144	}
8145
8146	/**
8147	* @note Locks the same as Host::captureUSBDevice() does.
8148	*/
8149	STDMETHODIMP SessionMachine::CaptureUSBDevice (IN_GUID aId)
8150	{
8151	LogFlowThisFunc (("\n"));
8152
8153	AutoCaller autoCaller (this);
8154	AssertComRCReturnRC (autoCaller.rc());
8155
8156	#ifdef VBOX_WITH_USB
8157	/* if captureDeviceForVM() fails, it must have set extended error info */
8158	MultiResult rc = mParent->host()->checkUSBProxyService();
8159	CheckComRCReturnRC (rc);
8160
8161	USBProxyService *service = mParent->host()->usbProxyService();
8162	AssertReturn (service, E_FAIL);
8163	return service->captureDeviceForVM (this, aId);
8164	#else
8165	return E_NOTIMPL;
8166	#endif
8167	}
8168
8169	/**
8170	* @note Locks the same as Host::detachUSBDevice() does.
8171	*/
8172	STDMETHODIMP SessionMachine::DetachUSBDevice (IN_GUID aId, BOOL aDone)
8173	{
8174	LogFlowThisFunc (("\n"));
8175
8176	AutoCaller autoCaller (this);
8177	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8178
8179	#ifdef VBOX_WITH_USB
8180	USBProxyService *service = mParent->host()->usbProxyService();
8181	AssertReturn (service, E_FAIL);
8182	return service->detachDeviceFromVM (this, aId, !!aDone);
8183	#else
8184	return E_NOTIMPL;
8185	#endif
8186	}
8187
8188	/**
8189	* Inserts all machine filters to the USB proxy service and then calls
8190	* Host::autoCaptureUSBDevices().
8191	*
8192	* Called by Console from the VM process upon VM startup.
8193	*
8194	* @note Locks what called methods lock.
8195	*/
8196	STDMETHODIMP SessionMachine::AutoCaptureUSBDevices()
8197	{
8198	LogFlowThisFunc (("\n"));
8199
8200	AutoCaller autoCaller (this);
8201	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8202
8203	#ifdef VBOX_WITH_USB
8204	HRESULT rc = mUSBController->notifyProxy (true /* aInsertFilters */);
8205	AssertComRC (rc);
8206	NOREF (rc);
8207
8208	USBProxyService *service = mParent->host()->usbProxyService();
8209	AssertReturn (service, E_FAIL);
8210	return service->autoCaptureDevicesForVM (this);
8211	#else
8212	return S_OK;
8213	#endif
8214	}
8215
8216	/**
8217	* Removes all machine filters from the USB proxy service and then calls
8218	* Host::detachAllUSBDevices().
8219	*
8220	* Called by Console from the VM process upon normal VM termination or by
8221	* SessionMachine::uninit() upon abnormal VM termination (from under the
8222	* Machine/SessionMachine lock).
8223	*
8224	* @note Locks what called methods lock.
8225	*/
8226	STDMETHODIMP SessionMachine::DetachAllUSBDevices (BOOL aDone)
8227	{
8228	LogFlowThisFunc (("\n"));
8229
8230	AutoCaller autoCaller (this);
8231	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8232
8233	#ifdef VBOX_WITH_USB
8234	HRESULT rc = mUSBController->notifyProxy (false /* aInsertFilters */);
8235	AssertComRC (rc);
8236	NOREF (rc);
8237
8238	USBProxyService *service = mParent->host()->usbProxyService();
8239	AssertReturn (service, E_FAIL);
8240	return service->detachAllDevicesFromVM (this, !!aDone, false /* aAbnormal */);
8241	#else
8242	return S_OK;
8243	#endif
8244	}
8245
8246	/**
8247	* @note Locks this object for writing.
8248	*/
8249	STDMETHODIMP SessionMachine::OnSessionEnd (ISession *aSession,
8250	IProgress **aProgress)
8251	{
8252	LogFlowThisFuncEnter();
8253
8254	AssertReturn (aSession, E_INVALIDARG);
8255	AssertReturn (aProgress, E_INVALIDARG);
8256
8257	AutoCaller autoCaller (this);
8258
8259	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
8260	/*
8261	* We don't assert below because it might happen that a non-direct session
8262	* informs us it is closed right after we've been uninitialized -- it's ok.
8263	*/
8264	CheckComRCReturnRC (autoCaller.rc());
8265
8266	/* get IInternalSessionControl interface */
8267	ComPtr <IInternalSessionControl> control (aSession);
8268
8269	ComAssertRet (!control.isNull(), E_INVALIDARG);
8270
8271	AutoWriteLock alock (this);
8272
8273	if (control.equalsTo (mData->mSession.mDirectControl))
8274	{
8275	ComAssertRet (aProgress, E_POINTER);
8276
8277	/* The direct session is being normally closed by the client process
8278	* ----------------------------------------------------------------- */
8279
8280	/* go to the closing state (essential for all open*Session() calls and
8281	* for #checkForDeath()) */
8282	Assert (mData->mSession.mState == SessionState_Open);
8283	mData->mSession.mState = SessionState_Closing;
8284
8285	/* set direct control to NULL to release the remote instance */
8286	mData->mSession.mDirectControl.setNull();
8287	LogFlowThisFunc (("Direct control is set to NULL\n"));
8288
8289	/* Create the progress object the client will use to wait until
8290	* #checkForDeath() is called to uninitialize this session object after
8291	* it releases the IPC semaphore. */
8292	ComObjPtr <Progress> progress;
8293	progress.createObject();
8294	progress->init (mParent, static_cast <IMachine *> (mPeer),
8295	Bstr (tr ("Closing session")), FALSE /* aCancelable */);
8296	progress.queryInterfaceTo (aProgress);
8297	mData->mSession.mProgress = progress;
8298	}
8299	else
8300	{
8301	/* the remote session is being normally closed */
8302	Data::Session::RemoteControlList::iterator it =
8303	mData->mSession.mRemoteControls.begin();
8304	while (it != mData->mSession.mRemoteControls.end())
8305	{
8306	if (control.equalsTo (*it))
8307	break;
8308	++it;
8309	}
8310	BOOL found = it != mData->mSession.mRemoteControls.end();
8311	ComAssertMsgRet (found, ("The session is not found in the session list!"),
8312	E_INVALIDARG);
8313	mData->mSession.mRemoteControls.remove (*it);
8314	}
8315
8316	LogFlowThisFuncLeave();
8317	return S_OK;
8318	}
8319
8320	/**
8321	* @note Locks this object for writing.
8322	*/
8323	STDMETHODIMP SessionMachine::BeginSavingState (IProgress aProgress, BSTR aStateFilePath)
8324	{
8325	LogFlowThisFuncEnter();
8326
8327	AssertReturn (aProgress, E_INVALIDARG);
8328	AssertReturn (aStateFilePath, E_POINTER);
8329
8330	AutoCaller autoCaller (this);
8331	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8332
8333	AutoWriteLock alock (this);
8334
8335	AssertReturn (mData->mMachineState == MachineState_Paused &&
8336	mSnapshotData.mLastState == MachineState_Null &&
8337	mSnapshotData.mProgressId.isEmpty() &&
8338	mSnapshotData.mStateFilePath.isNull(),
8339	E_FAIL);
8340
8341	/* memorize the progress ID and add it to the global collection */
8342	Guid progressId;
8343	HRESULT rc = aProgress->COMGETTER(Id) (progressId.asOutParam());
8344	AssertComRCReturn (rc, rc);
8345	rc = mParent->addProgress (aProgress);
8346	AssertComRCReturn (rc, rc);
8347
8348	Bstr stateFilePath;
8349	/* stateFilePath is null when the machine is not running */
8350	if (mData->mMachineState == MachineState_Paused)
8351	{
8352	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
8353	mUserData->mSnapshotFolderFull.raw(),
8354	RTPATH_DELIMITER, mData->mUuid.raw());
8355	}
8356
8357	/* fill in the snapshot data */
8358	mSnapshotData.mLastState = mData->mMachineState;
8359	mSnapshotData.mProgressId = progressId;
8360	mSnapshotData.mStateFilePath = stateFilePath;
8361
8362	/* set the state to Saving (this is expected by Console::SaveState()) */
8363	setMachineState (MachineState_Saving);
8364
8365	stateFilePath.cloneTo (aStateFilePath);
8366
8367	return S_OK;
8368	}
8369
8370	/**
8371	* @note Locks mParent + this object for writing.
8372	*/
8373	STDMETHODIMP SessionMachine::EndSavingState (BOOL aSuccess)
8374	{
8375	LogFlowThisFunc (("\n"));
8376
8377	AutoCaller autoCaller (this);
8378	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8379
8380	/* endSavingState() need mParent lock */
8381	AutoMultiWriteLock2 alock (mParent, this);
8382
8383	AssertReturn (mData->mMachineState == MachineState_Saving &&
8384	mSnapshotData.mLastState != MachineState_Null &&
8385	!mSnapshotData.mProgressId.isEmpty() &&
8386	!mSnapshotData.mStateFilePath.isNull(),
8387	E_FAIL);
8388
8389	/*
8390	* on success, set the state to Saved;
8391	* on failure, set the state to the state we had when BeginSavingState() was
8392	* called (this is expected by Console::SaveState() and
8393	* Console::saveStateThread())
8394	*/
8395	if (aSuccess)
8396	setMachineState (MachineState_Saved);
8397	else
8398	setMachineState (mSnapshotData.mLastState);
8399
8400	return endSavingState (aSuccess);
8401	}
8402
8403	/**
8404	* @note Locks this object for writing.
8405	*/
8406	STDMETHODIMP SessionMachine::AdoptSavedState (IN_BSTR aSavedStateFile)
8407	{
8408	LogFlowThisFunc (("\n"));
8409
8410	AssertReturn (aSavedStateFile, E_INVALIDARG);
8411
8412	AutoCaller autoCaller (this);
8413	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8414
8415	AutoWriteLock alock (this);
8416
8417	AssertReturn (mData->mMachineState == MachineState_PoweredOff \|\|
8418	mData->mMachineState == MachineState_Aborted,
8419	E_FAIL);
8420
8421	Utf8Str stateFilePathFull = aSavedStateFile;
8422	int vrc = calculateFullPath (stateFilePathFull, stateFilePathFull);
8423	if (RT_FAILURE (vrc))
8424	return setError (VBOX_E_FILE_ERROR,
8425	tr ("Invalid saved state file path '%ls' (%Rrc)"),
8426	aSavedStateFile, vrc);
8427
8428	mSSData->mStateFilePath = stateFilePathFull;
8429
8430	/* The below setMachineState() will detect the state transition and will
8431	* update the settings file */
8432
8433	return setMachineState (MachineState_Saved);
8434	}
8435
8436	/**
8437	* @note Locks mParent + this object for writing.
8438	*/
8439	STDMETHODIMP SessionMachine::BeginTakingSnapshot (
8440	IConsole *aInitiator, IN_BSTR aName, IN_BSTR aDescription,
8441	IProgress aProgress, BSTR aStateFilePath,
8442	IProgress **aServerProgress)
8443	{
8444	LogFlowThisFuncEnter();
8445
8446	AssertReturn (aInitiator && aName, E_INVALIDARG);
8447	AssertReturn (aStateFilePath && aServerProgress, E_POINTER);
8448
8449	LogFlowThisFunc (("aName='%ls'\n", aName));
8450
8451	AutoCaller autoCaller (this);
8452	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8453
8454	/* saveSettings() needs mParent lock */
8455	AutoMultiWriteLock2 alock (mParent, this);
8456
8457	AssertReturn ((!Global::IsOnlineOrTransient (mData->mMachineState) \|\|
8458	mData->mMachineState == MachineState_Paused) &&
8459	mSnapshotData.mLastState == MachineState_Null &&
8460	mSnapshotData.mSnapshot.isNull() &&
8461	mSnapshotData.mServerProgress.isNull() &&
8462	mSnapshotData.mCombinedProgress.isNull(),
8463	E_FAIL);
8464
8465	bool takingSnapshotOnline = mData->mMachineState == MachineState_Paused;
8466
8467	if (!takingSnapshotOnline && mData->mMachineState != MachineState_Saved)
8468	{
8469	/* save all current settings to ensure current changes are committed and
8470	* hard disks are fixed up */
8471	HRESULT rc = saveSettings();
8472	CheckComRCReturnRC (rc);
8473	}
8474
8475	/// @todo NEWMEDIA so far, we decided to allow for Writhethrough hard disks
8476	/// when taking snapshots putting all the responsibility to the user...
8477	#if 0
8478	/* check that there are no Writethrough hard disks attached */
8479	for (HDData::AttachmentList::const_iterator
8480	it = mHDData->mAttachments.begin();
8481	it != mHDData->mAttachments.end();
8482	++ it)
8483	{
8484	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
8485	AutoReadLock hdLock (hd);
8486	if (hd->type() == HardDiskType_Writethrough)
8487	return setError (E_FAIL,
8488	tr ("Cannot take a snapshot because the Writethrough hard disk "
8489	"'%ls' is attached to this virtual machine"),
8490	hd->locationFull().raw());
8491	}
8492	#endif
8493
8494	AssertReturn (aProgress \|\| !takingSnapshotOnline, E_FAIL);
8495
8496	/* create an ID for the snapshot */
8497	Guid snapshotId;
8498	snapshotId.create();
8499
8500	Bstr stateFilePath;
8501	/* stateFilePath is null when the machine is not online nor saved */
8502	if (takingSnapshotOnline \|\| mData->mMachineState == MachineState_Saved)
8503	stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
8504	mUserData->mSnapshotFolderFull.raw(),
8505	RTPATH_DELIMITER,
8506	snapshotId.ptr());
8507
8508	/* ensure the directory for the saved state file exists */
8509	if (stateFilePath)
8510	{
8511	HRESULT rc = VirtualBox::ensureFilePathExists (Utf8Str (stateFilePath));
8512	CheckComRCReturnRC (rc);
8513	}
8514
8515	/* create a snapshot machine object */
8516	ComObjPtr <SnapshotMachine> snapshotMachine;
8517	snapshotMachine.createObject();
8518	HRESULT rc = snapshotMachine->init (this, snapshotId, stateFilePath);
8519	AssertComRCReturn (rc, rc);
8520
8521	Bstr progressDesc = BstrFmt (tr ("Taking snapshot of virtual machine '%ls'"),
8522	mUserData->mName.raw());
8523	Bstr firstOpDesc = Bstr (tr ("Preparing to take snapshot"));
8524
8525	/* create a server-side progress object (it will be descriptionless when we
8526	* need to combine it with the VM-side progress, i.e. when we're taking a
8527	* snapshot online). The number of operations is: 1 (preparing) + # of
8528	* hard disks + 1 (if the state is saved so we need to copy it)
8529	*/
8530	ComObjPtr <Progress> serverProgress;
8531	serverProgress.createObject();
8532	{
8533	ULONG opCount = 1 + mHDData->mAttachments.size();
8534	if (mData->mMachineState == MachineState_Saved)
8535	opCount ++;
8536	if (takingSnapshotOnline)
8537	rc = serverProgress->init (FALSE, opCount, firstOpDesc);
8538	else
8539	rc = serverProgress->init (mParent, aInitiator, progressDesc, FALSE,
8540	opCount, firstOpDesc);
8541	AssertComRCReturn (rc, rc);
8542	}
8543
8544	/* create a combined server-side progress object when necessary */
8545	ComObjPtr <CombinedProgress> combinedProgress;
8546	if (takingSnapshotOnline)
8547	{
8548	combinedProgress.createObject();
8549	rc = combinedProgress->init (mParent, aInitiator, progressDesc,
8550	serverProgress, aProgress);
8551	AssertComRCReturn (rc, rc);
8552	}
8553
8554	/* create a snapshot object */
8555	RTTIMESPEC time;
8556	ComObjPtr <Snapshot> snapshot;
8557	snapshot.createObject();
8558	rc = snapshot->init (snapshotId, aName, aDescription,
8559	*RTTimeNow (&time), snapshotMachine,
8560	mData->mCurrentSnapshot);
8561	AssertComRCReturnRC (rc);
8562
8563	/* create and start the task on a separate thread (note that it will not
8564	* start working until we release alock) */
8565	TakeSnapshotTask *task = new TakeSnapshotTask (this);
8566	int vrc = RTThreadCreate (NULL, taskHandler,
8567	(void *) task,
8568	0, RTTHREADTYPE_MAIN_WORKER, 0, "TakeSnapshot");
8569	if (RT_FAILURE (vrc))
8570	{
8571	snapshot->uninit();
8572	delete task;
8573	ComAssertRCRet (vrc, E_FAIL);
8574	}
8575
8576	/* fill in the snapshot data */
8577	mSnapshotData.mLastState = mData->mMachineState;
8578	mSnapshotData.mSnapshot = snapshot;
8579	mSnapshotData.mServerProgress = serverProgress;
8580	mSnapshotData.mCombinedProgress = combinedProgress;
8581
8582	/* set the state to Saving (this is expected by Console::TakeSnapshot()) */
8583	setMachineState (MachineState_Saving);
8584
8585	if (takingSnapshotOnline)
8586	stateFilePath.cloneTo (aStateFilePath);
8587	else
8588	*aStateFilePath = NULL;
8589
8590	serverProgress.queryInterfaceTo (aServerProgress);
8591
8592	LogFlowThisFuncLeave();
8593	return S_OK;
8594	}
8595
8596	/**
8597	* @note Locks this object for writing.
8598	*/
8599	STDMETHODIMP SessionMachine::EndTakingSnapshot (BOOL aSuccess)
8600	{
8601	LogFlowThisFunc (("\n"));
8602
8603	AutoCaller autoCaller (this);
8604	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8605
8606	AutoWriteLock alock (this);
8607
8608	AssertReturn (!aSuccess \|\|
8609	(mData->mMachineState == MachineState_Saving &&
8610	mSnapshotData.mLastState != MachineState_Null &&
8611	!mSnapshotData.mSnapshot.isNull() &&
8612	!mSnapshotData.mServerProgress.isNull() &&
8613	!mSnapshotData.mCombinedProgress.isNull()),
8614	E_FAIL);
8615
8616	/* set the state to the state we had when BeginTakingSnapshot() was called
8617	* (this is expected by Console::TakeSnapshot() and
8618	* Console::saveStateThread()) */
8619	setMachineState (mSnapshotData.mLastState);
8620
8621	return endTakingSnapshot (aSuccess);
8622	}
8623
8624	/**
8625	* @note Locks mParent + this + children objects for writing!
8626	*/
8627	STDMETHODIMP SessionMachine::DiscardSnapshot (
8628	IConsole *aInitiator, IN_GUID aId,
8629	MachineState_T aMachineState, IProgress *aProgress)
8630	{
8631	LogFlowThisFunc (("\n"));
8632
8633	Guid id = aId;
8634	AssertReturn (aInitiator && !id.isEmpty(), E_INVALIDARG);
8635	AssertReturn (aMachineState && aProgress, E_POINTER);
8636
8637	AutoCaller autoCaller (this);
8638	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8639
8640	/* saveSettings() needs mParent lock */
8641	AutoMultiWriteLock2 alock (mParent, this);
8642
8643	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8644
8645	ComObjPtr <Snapshot> snapshot;
8646	HRESULT rc = findSnapshot (id, snapshot, true /* aSetError */);
8647	CheckComRCReturnRC (rc);
8648
8649	AutoWriteLock snapshotLock (snapshot);
8650
8651	{
8652	AutoWriteLock chLock (snapshot->childrenLock());
8653	size_t childrenCount = snapshot->children().size();
8654	if (childrenCount > 1)
8655	return setError (VBOX_E_INVALID_OBJECT_STATE,
8656	tr ("Snapshot '%ls' of the machine '%ls' has more than one "
8657	"child snapshot (%d)"),
8658	snapshot->data().mName.raw(), mUserData->mName.raw(),
8659	childrenCount);
8660	}
8661
8662	/* If the snapshot being discarded is the current one, ensure current
8663	* settings are committed and saved.
8664	*/
8665	if (snapshot == mData->mCurrentSnapshot)
8666	{
8667	if (isModified())
8668	{
8669	rc = saveSettings();
8670	CheckComRCReturnRC (rc);
8671	}
8672	}
8673
8674	/* create a progress object. The number of operations is:
8675	* 1 (preparing) + # of hard disks + 1 if the snapshot is online
8676	*/
8677	ComObjPtr <Progress> progress;
8678	progress.createObject();
8679	rc = progress->init (mParent, aInitiator,
8680	Bstr (Utf8StrFmt (tr ("Discarding snapshot '%ls'"),
8681	snapshot->data().mName.raw())),
8682	FALSE /* aCancelable */,
8683	1 + snapshot->data().mMachine->mHDData->mAttachments.size() +
8684	(snapshot->stateFilePath().isNull() ? 0 : 1),
8685	Bstr (tr ("Preparing to discard snapshot")));
8686	AssertComRCReturn (rc, rc);
8687
8688	/* create and start the task on a separate thread */
8689	DiscardSnapshotTask *task = new DiscardSnapshotTask (this, progress, snapshot);
8690	int vrc = RTThreadCreate (NULL, taskHandler,
8691	(void *) task,
8692	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardSnapshot");
8693	if (RT_FAILURE (vrc))
8694	delete task;
8695	ComAssertRCRet (vrc, E_FAIL);
8696
8697	/* set the proper machine state (note: after creating a Task instance) */
8698	setMachineState (MachineState_Discarding);
8699
8700	/* return the progress to the caller */
8701	progress.queryInterfaceTo (aProgress);
8702
8703	/* return the new state to the caller */
8704	*aMachineState = mData->mMachineState;
8705
8706	return S_OK;
8707	}
8708
8709	/**
8710	* @note Locks this + children objects for writing!
8711	*/
8712	STDMETHODIMP SessionMachine::DiscardCurrentState (
8713	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
8714	{
8715	LogFlowThisFunc (("\n"));
8716
8717	AssertReturn (aInitiator, E_INVALIDARG);
8718	AssertReturn (aMachineState && aProgress, E_POINTER);
8719
8720	AutoCaller autoCaller (this);
8721	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8722
8723	AutoWriteLock alock (this);
8724
8725	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8726
8727	if (mData->mCurrentSnapshot.isNull())
8728	return setError (VBOX_E_INVALID_OBJECT_STATE,
8729	tr ("Could not discard the current state of the machine '%ls' "
8730	"because it doesn't have any snapshots"),
8731	mUserData->mName.raw());
8732
8733	/* create a progress object. The number of operations is: 1 (preparing) + #
8734	* of hard disks + 1 (if we need to copy the saved state file) */
8735	ComObjPtr <Progress> progress;
8736	progress.createObject();
8737	{
8738	ULONG opCount = 1 + mData->mCurrentSnapshot->data()
8739	.mMachine->mHDData->mAttachments.size();
8740	if (mData->mCurrentSnapshot->stateFilePath())
8741	++ opCount;
8742	progress->init (mParent, aInitiator,
8743	Bstr (tr ("Discarding current machine state")),
8744	FALSE /* aCancelable */, opCount,
8745	Bstr (tr ("Preparing to discard current state")));
8746	}
8747
8748	/* create and start the task on a separate thread (note that it will not
8749	* start working until we release alock) */
8750	DiscardCurrentStateTask *task =
8751	new DiscardCurrentStateTask (this, progress, false /* discardCurSnapshot */);
8752	int vrc = RTThreadCreate (NULL, taskHandler,
8753	(void *) task,
8754	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurState");
8755	if (RT_FAILURE (vrc))
8756	{
8757	delete task;
8758	ComAssertRCRet (vrc, E_FAIL);
8759	}
8760
8761	/* set the proper machine state (note: after creating a Task instance) */
8762	setMachineState (MachineState_Discarding);
8763
8764	/* return the progress to the caller */
8765	progress.queryInterfaceTo (aProgress);
8766
8767	/* return the new state to the caller */
8768	*aMachineState = mData->mMachineState;
8769
8770	return S_OK;
8771	}
8772
8773	/**
8774	* @note Locks thos object for writing!
8775	*/
8776	STDMETHODIMP SessionMachine::DiscardCurrentSnapshotAndState (
8777	IConsole aInitiator, MachineState_T aMachineState, IProgress **aProgress)
8778	{
8779	LogFlowThisFunc (("\n"));
8780
8781	AssertReturn (aInitiator, E_INVALIDARG);
8782	AssertReturn (aMachineState && aProgress, E_POINTER);
8783
8784	AutoCaller autoCaller (this);
8785	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8786
8787	AutoWriteLock alock (this);
8788
8789	ComAssertRet (!Global::IsOnlineOrTransient (mData->mMachineState), E_FAIL);
8790
8791	if (mData->mCurrentSnapshot.isNull())
8792	return setError (VBOX_E_INVALID_OBJECT_STATE,
8793	tr ("Could not discard the current state of the machine '%ls' "
8794	"because it doesn't have any snapshots"),
8795	mUserData->mName.raw());
8796
8797	/* create a progress object. The number of operations is:
8798	* 1 (preparing) + # of hard disks in the current snapshot +
8799	* # of hard disks in the previous snapshot +
8800	* 1 if we need to copy the saved state file of the previous snapshot +
8801	* 1 if the current snapshot is online
8802	* or (if there is no previous snapshot):
8803	* 1 (preparing) + # of hard disks in the current snapshot * 2 +
8804	* 1 if we need to copy the saved state file of the current snapshot * 2
8805	*/
8806	ComObjPtr <Progress> progress;
8807	progress.createObject();
8808	{
8809	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
8810	ComObjPtr <Snapshot> prevSnapshot = mData->mCurrentSnapshot->parent();
8811
8812	ULONG opCount = 1;
8813	if (prevSnapshot)
8814	{
8815	opCount += curSnapshot->data().mMachine->mHDData->mAttachments.size();
8816	opCount += prevSnapshot->data().mMachine->mHDData->mAttachments.size();
8817	if (prevSnapshot->stateFilePath())
8818	++ opCount;
8819	if (curSnapshot->stateFilePath())
8820	++ opCount;
8821	}
8822	else
8823	{
8824	opCount +=
8825	curSnapshot->data().mMachine->mHDData->mAttachments.size() * 2;
8826	if (curSnapshot->stateFilePath())
8827	opCount += 2;
8828	}
8829
8830	progress->init (mParent, aInitiator,
8831	Bstr (tr ("Discarding current machine snapshot and state")),
8832	FALSE /* aCancelable */, opCount,
8833	Bstr (tr ("Preparing to discard current snapshot and state")));
8834	}
8835
8836	/* create and start the task on a separate thread */
8837	DiscardCurrentStateTask *task =
8838	new DiscardCurrentStateTask (this, progress, true /* discardCurSnapshot */);
8839	int vrc = RTThreadCreate (NULL, taskHandler,
8840	(void *) task,
8841	0, RTTHREADTYPE_MAIN_WORKER, 0, "DiscardCurStSnp");
8842	if (RT_FAILURE (vrc))
8843	{
8844	delete task;
8845	ComAssertRCRet (vrc, E_FAIL);
8846	}
8847
8848	/* set the proper machine state (note: after creating a Task instance) */
8849	setMachineState (MachineState_Discarding);
8850
8851	/* return the progress to the caller */
8852	progress.queryInterfaceTo (aProgress);
8853
8854	/* return the new state to the caller */
8855	*aMachineState = mData->mMachineState;
8856
8857	return S_OK;
8858	}
8859
8860	STDMETHODIMP SessionMachine::
8861	PullGuestProperties (ComSafeArrayOut (BSTR, aNames),
8862	ComSafeArrayOut (BSTR, aValues),
8863	ComSafeArrayOut (ULONG64, aTimestamps),
8864	ComSafeArrayOut (BSTR, aFlags))
8865	{
8866	LogFlowThisFunc (("\n"));
8867
8868	#ifdef VBOX_WITH_GUEST_PROPS
8869	using namespace guestProp;
8870
8871	AutoCaller autoCaller (this);
8872	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8873
8874	AutoReadLock alock (this);
8875
8876	AssertReturn (!ComSafeArrayOutIsNull (aNames), E_POINTER);
8877	AssertReturn (!ComSafeArrayOutIsNull (aValues), E_POINTER);
8878	AssertReturn (!ComSafeArrayOutIsNull (aTimestamps), E_POINTER);
8879	AssertReturn (!ComSafeArrayOutIsNull (aFlags), E_POINTER);
8880
8881	size_t cEntries = mHWData->mGuestProperties.size();
8882	com::SafeArray <BSTR> names (cEntries);
8883	com::SafeArray <BSTR> values (cEntries);
8884	com::SafeArray <ULONG64> timestamps (cEntries);
8885	com::SafeArray <BSTR> flags (cEntries);
8886	unsigned i = 0;
8887	for (HWData::GuestPropertyList::iterator it = mHWData->mGuestProperties.begin();
8888	it != mHWData->mGuestProperties.end(); ++it)
8889	{
8890	char szFlags[MAX_FLAGS_LEN + 1];
8891	it->mName.cloneTo (&names[i]);
8892	it->mValue.cloneTo (&values[i]);
8893	timestamps[i] = it->mTimestamp;
8894	writeFlags (it->mFlags, szFlags);
8895	Bstr (szFlags).cloneTo (&flags[i]);
8896	++i;
8897	}
8898	names.detachTo (ComSafeArrayOutArg (aNames));
8899	values.detachTo (ComSafeArrayOutArg (aValues));
8900	timestamps.detachTo (ComSafeArrayOutArg (aTimestamps));
8901	flags.detachTo (ComSafeArrayOutArg (aFlags));
8902	mHWData->mPropertyServiceActive = true;
8903	return S_OK;
8904	#else
8905	ReturnComNotImplemented();
8906	#endif
8907	}
8908
8909	STDMETHODIMP SessionMachine::PushGuestProperties (ComSafeArrayIn (IN_BSTR, aNames),
8910	ComSafeArrayIn (IN_BSTR, aValues),
8911	ComSafeArrayIn (ULONG64, aTimestamps),
8912	ComSafeArrayIn (IN_BSTR, aFlags))
8913	{
8914	LogFlowThisFunc (("\n"));
8915
8916	#ifdef VBOX_WITH_GUEST_PROPS
8917	using namespace guestProp;
8918
8919	AutoCaller autoCaller (this);
8920	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
8921
8922	AutoWriteLock alock (this);
8923
8924	/* Temporarily reset the registered flag, so that our machine state
8925	* changes (i.e. mHWData.backup()) succeed. (isMutable() used in
8926	* all setters will return FALSE for a Machine instance if mRegistered
8927	* is TRUE). This is copied from registeredInit(), and may or may not be
8928	* the right way to handle this. */
8929	mData->mRegistered = FALSE;
8930	HRESULT rc = checkStateDependency (MutableStateDep);
8931	LogRel (("checkStateDependency (MutableStateDep) returned 0x%x\n", rc));
8932	CheckComRCReturnRC (rc);
8933
8934	// ComAssertRet (mData->mMachineState < MachineState_Running, E_FAIL);
8935
8936	AssertReturn (!ComSafeArrayInIsNull (aNames), E_POINTER);
8937	AssertReturn (!ComSafeArrayInIsNull (aValues), E_POINTER);
8938	AssertReturn (!ComSafeArrayInIsNull (aTimestamps), E_POINTER);
8939	AssertReturn (!ComSafeArrayInIsNull (aFlags), E_POINTER);
8940
8941	com::SafeArray <IN_BSTR> names (ComSafeArrayInArg (aNames));
8942	com::SafeArray <IN_BSTR> values (ComSafeArrayInArg (aValues));
8943	com::SafeArray <ULONG64> timestamps (ComSafeArrayInArg (aTimestamps));
8944	com::SafeArray <IN_BSTR> flags (ComSafeArrayInArg (aFlags));
8945	DiscardSettings();
8946	mHWData.backup();
8947	mHWData->mGuestProperties.erase (mHWData->mGuestProperties.begin(),
8948	mHWData->mGuestProperties.end());
8949	for (unsigned i = 0; i < names.size(); ++i)
8950	{
8951	uint32_t fFlags = NILFLAG;
8952	validateFlags (Utf8Str (flags[i]).raw(), &fFlags);
8953	HWData::GuestProperty property = { names[i], values[i], timestamps[i], fFlags };
8954	mHWData->mGuestProperties.push_back (property);
8955	}
8956	mHWData->mPropertyServiceActive = false;
8957	alock.unlock();
8958	SaveSettings();
8959	/* Restore the mRegistered flag. */
8960	mData->mRegistered = TRUE;
8961	return S_OK;
8962	#else
8963	ReturnComNotImplemented();
8964	#endif
8965	}
8966
8967	STDMETHODIMP SessionMachine::PushGuestProperty (IN_BSTR aName, IN_BSTR aValue,
8968	ULONG64 aTimestamp, IN_BSTR aFlags)
8969	{
8970	LogFlowThisFunc (("\n"));
8971
8972	#ifdef VBOX_WITH_GUEST_PROPS
8973	using namespace guestProp;
8974
8975	CheckComArgNotNull (aName);
8976	if ((aValue != NULL) && (!VALID_PTR (aValue) \|\| !VALID_PTR (aFlags)))
8977	return E_POINTER; /* aValue can be NULL to indicate deletion */
8978
8979	Utf8Str utf8Name (aName);
8980	Utf8Str utf8Flags (aFlags);
8981	Utf8Str utf8Patterns (mHWData->mGuestPropertyNotificationPatterns);
8982	if ( utf8Name.isNull()
8983	\|\| ((aFlags != NULL) && utf8Flags.isNull())
8984	\|\| utf8Patterns.isNull()
8985	)
8986	return E_OUTOFMEMORY;
8987
8988	uint32_t fFlags = NILFLAG;
8989	if ((aFlags != NULL) && RT_FAILURE (validateFlags (utf8Flags.raw(), &fFlags)))
8990	return E_INVALIDARG;
8991
8992	bool matchAll = false;
8993	if (utf8Patterns.length() == 0)
8994	matchAll = true;
8995
8996	AutoCaller autoCaller (this);
8997	CheckComRCReturnRC (autoCaller.rc());
8998
8999	AutoWriteLock alock (this);
9000
9001	HRESULT rc = checkStateDependency (MutableStateDep);
9002	CheckComRCReturnRC (rc);
9003
9004	mHWData.backup();
9005	for (HWData::GuestPropertyList::iterator iter = mHWData->mGuestProperties.begin();
9006	iter != mHWData->mGuestProperties.end(); ++iter)
9007	if (aName == iter->mName)
9008	{
9009	mHWData->mGuestProperties.erase (iter);
9010	break;
9011	}
9012	if (aValue != NULL)
9013	{
9014	HWData::GuestProperty property = { aName, aValue, aTimestamp, fFlags };
9015	mHWData->mGuestProperties.push_back (property);
9016	}
9017
9018	/* send a callback notification if appropriate */
9019	alock.leave();
9020	if ( matchAll
9021	\|\| RTStrSimplePatternMultiMatch (utf8Patterns.raw(), RTSTR_MAX,
9022	utf8Name.raw(), RTSTR_MAX, NULL)
9023	)
9024	mParent->onGuestPropertyChange (mData->mUuid, aName, aValue, aFlags);
9025
9026	return S_OK;
9027	#else
9028	ReturnComNotImplemented();
9029	#endif
9030	}
9031
9032	// public methods only for internal purposes
9033	/////////////////////////////////////////////////////////////////////////////
9034
9035	/**
9036	* Called from the client watcher thread to check for expected or unexpected
9037	* death of the client process that has a direct session to this machine.
9038	*
9039	* On Win32 and on OS/2, this method is called only when we've got the
9040	* mutex (i.e. the client has either died or terminated normally) so it always
9041	* returns @c true (the client is terminated, the session machine is
9042	* uninitialized).
9043	*
9044	* On other platforms, the method returns @c true if the client process has
9045	* terminated normally or abnormally and the session machine was uninitialized,
9046	* and @c false if the client process is still alive.
9047	*
9048	* @note Locks this object for writing.
9049	*/
9050	bool SessionMachine::checkForDeath()
9051	{
9052	Uninit::Reason reason;
9053	bool terminated = false;
9054
9055	/* Enclose autoCaller with a block because calling uninit() from under it
9056	* will deadlock. */
9057	{
9058	AutoCaller autoCaller (this);
9059	if (!autoCaller.isOk())
9060	{
9061	/* return true if not ready, to cause the client watcher to exclude
9062	* the corresponding session from watching */
9063	LogFlowThisFunc (("Already uninitialized!"));
9064	return true;
9065	}
9066
9067	AutoWriteLock alock (this);
9068
9069	/* Determine the reason of death: if the session state is Closing here,
9070	* everything is fine. Otherwise it means that the client did not call
9071	* OnSessionEnd() before it released the IPC semaphore. This may happen
9072	* either because the client process has abnormally terminated, or
9073	* because it simply forgot to call ISession::Close() before exiting. We
9074	* threat the latter also as an abnormal termination (see
9075	* Session::uninit() for details). */
9076	reason = mData->mSession.mState == SessionState_Closing ?
9077	Uninit::Normal :
9078	Uninit::Abnormal;
9079
9080	#if defined(RT_OS_WINDOWS)
9081
9082	AssertMsg (mIPCSem, ("semaphore must be created"));
9083
9084	/* release the IPC mutex */
9085	::ReleaseMutex (mIPCSem);
9086
9087	terminated = true;
9088
9089	#elif defined(RT_OS_OS2)
9090
9091	AssertMsg (mIPCSem, ("semaphore must be created"));
9092
9093	/* release the IPC mutex */
9094	::DosReleaseMutexSem (mIPCSem);
9095
9096	terminated = true;
9097
9098	#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
9099
9100	AssertMsg (mIPCSem >= 0, ("semaphore must be created"));
9101
9102	int val = ::semctl (mIPCSem, 0, GETVAL);
9103	if (val > 0)
9104	{
9105	/* the semaphore is signaled, meaning the session is terminated */
9106	terminated = true;
9107	}
9108
9109	#else
9110	# error "Port me!"
9111	#endif
9112
9113	} /* AutoCaller block */
9114
9115	if (terminated)
9116	uninit (reason);
9117
9118	return terminated;
9119	}
9120
9121	/**
9122	* @note Locks this object for reading.
9123	*/
9124	HRESULT SessionMachine::onDVDDriveChange()
9125	{
9126	LogFlowThisFunc (("\n"));
9127
9128	AutoCaller autoCaller (this);
9129	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9130
9131	ComPtr <IInternalSessionControl> directControl;
9132	{
9133	AutoReadLock alock (this);
9134	directControl = mData->mSession.mDirectControl;
9135	}
9136
9137	/* ignore notifications sent after #OnSessionEnd() is called */
9138	if (!directControl)
9139	return S_OK;
9140
9141	return directControl->OnDVDDriveChange();
9142	}
9143
9144	/**
9145	* @note Locks this object for reading.
9146	*/
9147	HRESULT SessionMachine::onFloppyDriveChange()
9148	{
9149	LogFlowThisFunc (("\n"));
9150
9151	AutoCaller autoCaller (this);
9152	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9153
9154	ComPtr <IInternalSessionControl> directControl;
9155	{
9156	AutoReadLock alock (this);
9157	directControl = mData->mSession.mDirectControl;
9158	}
9159
9160	/* ignore notifications sent after #OnSessionEnd() is called */
9161	if (!directControl)
9162	return S_OK;
9163
9164	return directControl->OnFloppyDriveChange();
9165	}
9166
9167	/**
9168	* @note Locks this object for reading.
9169	*/
9170	HRESULT SessionMachine::onNetworkAdapterChange (INetworkAdapter *networkAdapter)
9171	{
9172	LogFlowThisFunc (("\n"));
9173
9174	AutoCaller autoCaller (this);
9175	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9176
9177	ComPtr <IInternalSessionControl> directControl;
9178	{
9179	AutoReadLock alock (this);
9180	directControl = mData->mSession.mDirectControl;
9181	}
9182
9183	/* ignore notifications sent after #OnSessionEnd() is called */
9184	if (!directControl)
9185	return S_OK;
9186
9187	return directControl->OnNetworkAdapterChange (networkAdapter);
9188	}
9189
9190	/**
9191	* @note Locks this object for reading.
9192	*/
9193	HRESULT SessionMachine::onSerialPortChange (ISerialPort *serialPort)
9194	{
9195	LogFlowThisFunc (("\n"));
9196
9197	AutoCaller autoCaller (this);
9198	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9199
9200	ComPtr <IInternalSessionControl> directControl;
9201	{
9202	AutoReadLock alock (this);
9203	directControl = mData->mSession.mDirectControl;
9204	}
9205
9206	/* ignore notifications sent after #OnSessionEnd() is called */
9207	if (!directControl)
9208	return S_OK;
9209
9210	return directControl->OnSerialPortChange (serialPort);
9211	}
9212
9213	/**
9214	* @note Locks this object for reading.
9215	*/
9216	HRESULT SessionMachine::onParallelPortChange (IParallelPort *parallelPort)
9217	{
9218	LogFlowThisFunc (("\n"));
9219
9220	AutoCaller autoCaller (this);
9221	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9222
9223	ComPtr <IInternalSessionControl> directControl;
9224	{
9225	AutoReadLock alock (this);
9226	directControl = mData->mSession.mDirectControl;
9227	}
9228
9229	/* ignore notifications sent after #OnSessionEnd() is called */
9230	if (!directControl)
9231	return S_OK;
9232
9233	return directControl->OnParallelPortChange (parallelPort);
9234	}
9235
9236	/**
9237	* @note Locks this object for reading.
9238	*/
9239	HRESULT SessionMachine::onVRDPServerChange()
9240	{
9241	LogFlowThisFunc (("\n"));
9242
9243	AutoCaller autoCaller (this);
9244	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9245
9246	ComPtr <IInternalSessionControl> directControl;
9247	{
9248	AutoReadLock alock (this);
9249	directControl = mData->mSession.mDirectControl;
9250	}
9251
9252	/* ignore notifications sent after #OnSessionEnd() is called */
9253	if (!directControl)
9254	return S_OK;
9255
9256	return directControl->OnVRDPServerChange();
9257	}
9258
9259	/**
9260	* @note Locks this object for reading.
9261	*/
9262	HRESULT SessionMachine::onUSBControllerChange()
9263	{
9264	LogFlowThisFunc (("\n"));
9265
9266	AutoCaller autoCaller (this);
9267	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9268
9269	ComPtr <IInternalSessionControl> directControl;
9270	{
9271	AutoReadLock alock (this);
9272	directControl = mData->mSession.mDirectControl;
9273	}
9274
9275	/* ignore notifications sent after #OnSessionEnd() is called */
9276	if (!directControl)
9277	return S_OK;
9278
9279	return directControl->OnUSBControllerChange();
9280	}
9281
9282	/**
9283	* @note Locks this object for reading.
9284	*/
9285	HRESULT SessionMachine::onSharedFolderChange()
9286	{
9287	LogFlowThisFunc (("\n"));
9288
9289	AutoCaller autoCaller (this);
9290	AssertComRCReturnRC (autoCaller.rc());
9291
9292	ComPtr <IInternalSessionControl> directControl;
9293	{
9294	AutoReadLock alock (this);
9295	directControl = mData->mSession.mDirectControl;
9296	}
9297
9298	/* ignore notifications sent after #OnSessionEnd() is called */
9299	if (!directControl)
9300	return S_OK;
9301
9302	return directControl->OnSharedFolderChange (FALSE /* aGlobal */);
9303	}
9304
9305	/**
9306	* Returns @c true if this machine's USB controller reports it has a matching
9307	* filter for the given USB device and @c false otherwise.
9308	*
9309	* @note Locks this object for reading.
9310	*/
9311	bool SessionMachine::hasMatchingUSBFilter (const ComObjPtr <HostUSBDevice> &aDevice, ULONG *aMaskedIfs)
9312	{
9313	AutoCaller autoCaller (this);
9314	/* silently return if not ready -- this method may be called after the
9315	* direct machine session has been called */
9316	if (!autoCaller.isOk())
9317	return false;
9318
9319	AutoReadLock alock (this);
9320
9321	#ifdef VBOX_WITH_USB
9322	switch (mData->mMachineState)
9323	{
9324	case MachineState_Starting:
9325	case MachineState_Restoring:
9326	case MachineState_Paused:
9327	case MachineState_Running:
9328	return mUSBController->hasMatchingFilter (aDevice, aMaskedIfs);
9329	default: break;
9330	}
9331	#endif
9332	return false;
9333	}
9334
9335	/**
9336	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9337	*/
9338	HRESULT SessionMachine::onUSBDeviceAttach (IUSBDevice *aDevice,
9339	IVirtualBoxErrorInfo *aError,
9340	ULONG aMaskedIfs)
9341	{
9342	LogFlowThisFunc (("\n"));
9343
9344	AutoCaller autoCaller (this);
9345
9346	/* This notification may happen after the machine object has been
9347	* uninitialized (the session was closed), so don't assert. */
9348	CheckComRCReturnRC (autoCaller.rc());
9349
9350	ComPtr <IInternalSessionControl> directControl;
9351	{
9352	AutoReadLock alock (this);
9353	directControl = mData->mSession.mDirectControl;
9354	}
9355
9356	/* fail on notifications sent after #OnSessionEnd() is called, it is
9357	* expected by the caller */
9358	if (!directControl)
9359	return E_FAIL;
9360
9361	/* No locks should be held at this point. */
9362	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9363	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9364
9365	return directControl->OnUSBDeviceAttach (aDevice, aError, aMaskedIfs);
9366	}
9367
9368	/**
9369	* @note The calls shall hold no locks. Will temporarily lock this object for reading.
9370	*/
9371	HRESULT SessionMachine::onUSBDeviceDetach (IN_GUID aId,
9372	IVirtualBoxErrorInfo *aError)
9373	{
9374	LogFlowThisFunc (("\n"));
9375
9376	AutoCaller autoCaller (this);
9377
9378	/* This notification may happen after the machine object has been
9379	* uninitialized (the session was closed), so don't assert. */
9380	CheckComRCReturnRC (autoCaller.rc());
9381
9382	ComPtr <IInternalSessionControl> directControl;
9383	{
9384	AutoReadLock alock (this);
9385	directControl = mData->mSession.mDirectControl;
9386	}
9387
9388	/* fail on notifications sent after #OnSessionEnd() is called, it is
9389	* expected by the caller */
9390	if (!directControl)
9391	return E_FAIL;
9392
9393	/* No locks should be held at this point. */
9394	AssertMsg (RTThreadGetWriteLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetWriteLockCount (RTThreadSelf())));
9395	AssertMsg (RTThreadGetReadLockCount (RTThreadSelf()) == 0, ("%d\n", RTThreadGetReadLockCount (RTThreadSelf())));
9396
9397	return directControl->OnUSBDeviceDetach (aId, aError);
9398	}
9399
9400	// protected methods
9401	/////////////////////////////////////////////////////////////////////////////
9402
9403	/**
9404	* Helper method to finalize saving the state.
9405	*
9406	* @note Must be called from under this object's lock.
9407	*
9408	* @param aSuccess TRUE if the snapshot has been taken successfully
9409	*
9410	* @note Locks mParent + this objects for writing.
9411	*/
9412	HRESULT SessionMachine::endSavingState (BOOL aSuccess)
9413	{
9414	LogFlowThisFuncEnter();
9415
9416	AutoCaller autoCaller (this);
9417	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9418
9419	/* saveSettings() needs mParent lock */
9420	AutoMultiWriteLock2 alock (mParent, this);
9421
9422	HRESULT rc = S_OK;
9423
9424	if (aSuccess)
9425	{
9426	mSSData->mStateFilePath = mSnapshotData.mStateFilePath;
9427
9428	/* save all VM settings */
9429	rc = saveSettings();
9430	}
9431	else
9432	{
9433	/* delete the saved state file (it might have been already created) */
9434	RTFileDelete (Utf8Str (mSnapshotData.mStateFilePath));
9435	}
9436
9437	/* remove the completed progress object */
9438	mParent->removeProgress (mSnapshotData.mProgressId);
9439
9440	/* clear out the temporary saved state data */
9441	mSnapshotData.mLastState = MachineState_Null;
9442	mSnapshotData.mProgressId.clear();
9443	mSnapshotData.mStateFilePath.setNull();
9444
9445	LogFlowThisFuncLeave();
9446	return rc;
9447	}
9448
9449	/**
9450	* Helper method to finalize taking a snapshot. Gets called to finalize the
9451	* "take snapshot" procedure.
9452	*
9453	* Expected to be called after completing all the tasks related to taking the
9454	* snapshot, either successfully or unsuccessfilly.
9455	*
9456	* @param aSuccess TRUE if the snapshot has been taken successfully.
9457	*
9458	* @note Locks this objects for writing.
9459	*/
9460	HRESULT SessionMachine::endTakingSnapshot (BOOL aSuccess)
9461	{
9462	LogFlowThisFuncEnter();
9463
9464	AutoCaller autoCaller (this);
9465	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
9466
9467	AutoWriteLock alock (this);
9468
9469	AssertReturn (!mSnapshotData.mSnapshot.isNull(), E_FAIL);
9470
9471	MultiResult rc (S_OK);
9472
9473	if (aSuccess)
9474	{
9475	/* the server progress must be completed on success */
9476	Assert (mSnapshotData.mServerProgress->completed());
9477
9478	mData->mCurrentSnapshot = mSnapshotData.mSnapshot;
9479
9480	/* memorize the first snapshot if necessary */
9481	if (!mData->mFirstSnapshot)
9482	mData->mFirstSnapshot = mData->mCurrentSnapshot;
9483
9484	int opFlags = SaveSS_AddOp \| SaveSS_CurrentId;
9485	if (!Global::IsOnline (mSnapshotData.mLastState))
9486	{
9487	/* the machine was powered off or saved when taking a snapshot, so
9488	* reset the mCurrentStateModified flag */
9489	mData->mCurrentStateModified = FALSE;
9490	opFlags \|= SaveSS_CurStateModified;
9491	}
9492
9493	rc = saveSnapshotSettings (mSnapshotData.mSnapshot, opFlags);
9494	}
9495
9496	if (aSuccess && SUCCEEDED (rc))
9497	{
9498	bool online = Global::IsOnline (mSnapshotData.mLastState);
9499
9500	/* associate old hard disks with the snapshot and do locking/unlocking*/
9501	fixupHardDisks2 (true /* aCommit */, online);
9502
9503	/* inform callbacks */
9504	mParent->onSnapshotTaken (mData->mUuid,
9505	mSnapshotData.mSnapshot->data().mId);
9506	}
9507	else
9508	{
9509	/* wait for the completion of the server progress (diff VDI creation) */
9510	/// @todo (dmik) later, we will definitely want to cancel it instead
9511	// (when the cancel function is implemented)
9512	mSnapshotData.mServerProgress->WaitForCompletion (-1);
9513
9514	/* delete all differencing hard disks created (this will also attach
9515	* their parents back by rolling back mHDData) */
9516	fixupHardDisks2 (false /* aCommit */);
9517
9518	/* delete the saved state file (it might have been already created) */
9519	if (mSnapshotData.mSnapshot->stateFilePath())
9520	RTFileDelete (Utf8Str (mSnapshotData.mSnapshot->stateFilePath()));
9521
9522	mSnapshotData.mSnapshot->uninit();
9523	}
9524
9525	/* clear out the snapshot data */
9526	mSnapshotData.mLastState = MachineState_Null;
9527	mSnapshotData.mSnapshot.setNull();
9528	mSnapshotData.mServerProgress.setNull();
9529
9530	/* uninitialize the combined progress (to remove it from the VBox collection) */
9531	if (!mSnapshotData.mCombinedProgress.isNull())
9532	{
9533	mSnapshotData.mCombinedProgress->uninit();
9534	mSnapshotData.mCombinedProgress.setNull();
9535	}
9536
9537	LogFlowThisFuncLeave();
9538	return rc;
9539	}
9540
9541	/**
9542	* Take snapshot task handler. Must be called only by
9543	* TakeSnapshotTask::handler()!
9544	*
9545	* The sole purpose of this task is to asynchronously create differencing VDIs
9546	* and copy the saved state file (when necessary). The VM process will wait for
9547	* this task to complete using the mSnapshotData.mServerProgress returned to it.
9548	*
9549	* @note Locks this object for writing.
9550	*/
9551	void SessionMachine::takeSnapshotHandler (TakeSnapshotTask &aTask)
9552	{
9553	LogFlowThisFuncEnter();
9554
9555	AutoCaller autoCaller (this);
9556
9557	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
9558	if (!autoCaller.isOk())
9559	{
9560	/* we might have been uninitialized because the session was accidentally
9561	* closed by the client, so don't assert */
9562	LogFlowThisFuncLeave();
9563	return;
9564	}
9565
9566	AutoWriteLock alock (this);
9567
9568	HRESULT rc = S_OK;
9569
9570	bool online = Global::IsOnline (mSnapshotData.mLastState);
9571
9572	LogFlowThisFunc (("Creating differencing hard disks (online=%d)...\n",
9573	online));
9574
9575	mHDData.backup();
9576
9577	/* create new differencing hard disks and attach them to this machine */
9578	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
9579	mSnapshotData.mServerProgress,
9580	online);
9581
9582	if (SUCCEEDED (rc) && mSnapshotData.mLastState == MachineState_Saved)
9583	{
9584	Utf8Str stateFrom = mSSData->mStateFilePath;
9585	Utf8Str stateTo = mSnapshotData.mSnapshot->stateFilePath();
9586
9587	LogFlowThisFunc (("Copying the execution state from '%s' to '%s'...\n",
9588	stateFrom.raw(), stateTo.raw()));
9589
9590	mSnapshotData.mServerProgress->advanceOperation (
9591	Bstr (tr ("Copying the execution state")));
9592
9593	/* Leave the lock before a lengthy operation (mMachineState is
9594	* MachineState_Saving here) */
9595
9596	alock.leave();
9597
9598	/* copy the state file */
9599	int vrc = RTFileCopyEx (stateFrom, stateTo, 0, progressCallback,
9600	static_cast <Progress *> (mSnapshotData.mServerProgress));
9601
9602	alock.enter();
9603
9604	if (RT_FAILURE (vrc))
9605	rc = setError (E_FAIL,
9606	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
9607	stateFrom.raw(), stateTo.raw(), vrc);
9608	}
9609
9610	/* we have to call endTakingSnapshot() ourselves if the snapshot was taken
9611	* offline because the VM process will not do it in this case
9612	*/
9613	if (!online)
9614	{
9615	LogFlowThisFunc (("Finalizing the taken snapshot (rc=%Rhrc)...\n", rc));
9616
9617	{
9618	ErrorInfoKeeper eik;
9619
9620	setMachineState (mSnapshotData.mLastState);
9621	updateMachineStateOnClient();
9622	}
9623
9624	/* finalize the progress after setting the state, for consistency */
9625	mSnapshotData.mServerProgress->notifyComplete (rc);
9626
9627	endTakingSnapshot (SUCCEEDED (rc));
9628	}
9629	else
9630	{
9631	mSnapshotData.mServerProgress->notifyComplete (rc);
9632	}
9633
9634	LogFlowThisFuncLeave();
9635	}
9636
9637	/**
9638	* Helper struct for SessionMachine::discardSnapshotHandler().
9639	*/
9640	struct HardDiskDiscardRec
9641	{
9642	HardDiskDiscardRec() : chain (NULL) {}
9643
9644	HardDiskDiscardRec (const ComObjPtr <HardDisk2> &aHd,
9645	HardDisk2::MergeChain *aChain = NULL)
9646	: hd (aHd), chain (aChain) {}
9647
9648	HardDiskDiscardRec (const ComObjPtr <HardDisk2> &aHd,
9649	HardDisk2::MergeChain *aChain,
9650	const ComObjPtr <HardDisk2> &aReplaceHd,
9651	const ComObjPtr <HardDisk2Attachment> &aReplaceHda,
9652	const Guid &aSnapshotId)
9653	: hd (aHd), chain (aChain)
9654	, replaceHd (aReplaceHd), replaceHda (aReplaceHda)
9655	, snapshotId (aSnapshotId) {}
9656
9657	ComObjPtr <HardDisk2> hd;
9658	HardDisk2::MergeChain *chain;
9659	/* these are for the replace hard disk case: */
9660	ComObjPtr <HardDisk2> replaceHd;
9661	ComObjPtr <HardDisk2Attachment> replaceHda;
9662	Guid snapshotId;
9663	};
9664
9665	typedef std::list <HardDiskDiscardRec> HardDiskDiscardRecList;
9666
9667	/**
9668	* Discard snapshot task handler. Must be called only by
9669	* DiscardSnapshotTask::handler()!
9670	*
9671	* When aTask.subTask is true, the associated progress object is left
9672	* uncompleted on success. On failure, the progress is marked as completed
9673	* regardless of this parameter.
9674	*
9675	* @note Locks mParent + this + child objects for writing!
9676	*/
9677	void SessionMachine::discardSnapshotHandler (DiscardSnapshotTask &aTask)
9678	{
9679	LogFlowThisFuncEnter();
9680
9681	AutoCaller autoCaller (this);
9682
9683	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
9684	if (!autoCaller.isOk())
9685	{
9686	/* we might have been uninitialized because the session was accidentally
9687	* closed by the client, so don't assert */
9688	aTask.progress->notifyComplete (
9689	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
9690	tr ("The session has been accidentally closed"));
9691
9692	LogFlowThisFuncLeave();
9693	return;
9694	}
9695
9696	/* saveSettings() needs mParent lock */
9697	AutoWriteLock vboxLock (mParent);
9698
9699	/* @todo We don't need mParent lock so far so unlock() it. Better is to
9700	* provide an AutoWriteLock argument that lets create a non-locking
9701	* instance */
9702	vboxLock.unlock();
9703
9704	/* Preseve the {parent, child} lock order for this and snapshot stuff */
9705	AutoMultiWriteLock3 alock (this->lockHandle(),
9706	aTask.snapshot->lockHandle(),
9707	aTask.snapshot->childrenLock());
9708
9709	ComObjPtr <SnapshotMachine> sm = aTask.snapshot->data().mMachine;
9710	/* no need to lock the snapshot machine since it is const by definiton */
9711
9712	HRESULT rc = S_OK;
9713
9714	/* save the snapshot ID (for callbacks) */
9715	Guid snapshotId = aTask.snapshot->data().mId;
9716
9717	HardDiskDiscardRecList toDiscard;
9718
9719	bool settingsChanged = false;
9720
9721	try
9722	{
9723	/* first pass: */
9724	LogFlowThisFunc (("1: Checking hard disk merge prerequisites...\n"));
9725
9726	for (HDData::AttachmentList::const_iterator it =
9727	sm->mHDData->mAttachments.begin();
9728	it != sm->mHDData->mAttachments.end();
9729	++ it)
9730	{
9731	ComObjPtr <HardDisk2Attachment> hda = *it;
9732	ComObjPtr <HardDisk2> hd = hda->hardDisk();
9733
9734	/* HardDisk2::prepareDiscard() reqiuires a write lock */
9735	AutoWriteLock hdLock (hd);
9736
9737	if (hd->type() != HardDiskType_Normal)
9738	{
9739	/* skip writethrough hard disks */
9740
9741	Assert (hd->type() == HardDiskType_Writethrough);
9742
9743	rc = aTask.progress->advanceOperation (
9744	BstrFmt (tr ("Skipping writethrough hard disk '%s'"),
9745	hd->root()->name().raw()));
9746	CheckComRCThrowRC (rc);
9747
9748	continue;
9749	}
9750
9751	HardDisk2::MergeChain *chain = NULL;
9752
9753	/* needs to be discarded (merged with the child if any), check
9754	* prerequisites */
9755	rc = hd->prepareDiscard (chain);
9756	CheckComRCThrowRC (rc);
9757
9758	if (hd->parent().isNull() && chain != NULL)
9759	{
9760	/* it's a base hard disk so it will be a backward merge of its
9761	* only child to it (prepareDiscard() does necessary checks). We
9762	* need then to update the attachment that refers to the child
9763	* to refer to the parent insead. Don't forget to detach the
9764	* child (otherwise mergeTo() called by discard() will assert
9765	* because it will be going to delete the child) */
9766
9767	/* The below assert would be nice but I don't want to move
9768	* HardDisk2::MergeChain to the header just for that
9769	* Assert (!chain->isForward()); */
9770
9771	Assert (hd->children().size() == 1);
9772
9773	ComObjPtr <HardDisk2> replaceHd = hd->children().front();
9774
9775	Assert (replaceHd->backRefs().front().machineId == mData->mUuid);
9776	Assert (replaceHd->backRefs().front().snapshotIds.size() <= 1);
9777
9778	Guid snapshotId;
9779	if (replaceHd->backRefs().front().snapshotIds.size() == 1)
9780	snapshotId = replaceHd->backRefs().front().snapshotIds.front();
9781
9782	HRESULT rc2 = S_OK;
9783
9784	/* adjust back references */
9785	rc2 = replaceHd->detachFrom (mData->mUuid, snapshotId);
9786	AssertComRC (rc2);
9787
9788	rc2 = hd->attachTo (mData->mUuid, snapshotId);
9789	AssertComRC (rc2);
9790
9791	/* replace the hard disk in the attachment object */
9792	HDData::AttachmentList::iterator it;
9793	if (snapshotId.isEmpty())
9794	{
9795	/* in current state */
9796	it = std::find_if (mHDData->mAttachments.begin(),
9797	mHDData->mAttachments.end(),
9798	HardDisk2Attachment::RefersTo (replaceHd));
9799	AssertBreak (it != mHDData->mAttachments.end());
9800	}
9801	else
9802	{
9803	/* in snapshot */
9804	ComObjPtr <Snapshot> snapshot;
9805	rc2 = findSnapshot (snapshotId, snapshot);
9806	AssertComRC (rc2);
9807
9808	/* don't lock the snapshot; cannot be modified outside */
9809	HDData::AttachmentList &snapAtts =
9810	snapshot->data().mMachine->mHDData->mAttachments;
9811	it = std::find_if (snapAtts.begin(),
9812	snapAtts.end(),
9813	HardDisk2Attachment::RefersTo (replaceHd));
9814	AssertBreak (it != snapAtts.end());
9815	}
9816
9817	AutoWriteLock attLock (*it);
9818	(it)->updateHardDisk (hd, false / aImplicit */);
9819
9820	toDiscard.push_back (HardDiskDiscardRec (hd, chain, replaceHd,
9821	*it, snapshotId));
9822	continue;
9823	}
9824
9825	toDiscard.push_back (HardDiskDiscardRec (hd, chain));
9826	}
9827
9828	/* Now we checked that we can successfully merge all normal hard disks
9829	* (unless a runtime error like end-of-disc happens). Prior to
9830	* performing the actual merge, we want to discard the snapshot itself
9831	* and remove it from the XML file to make sure that a possible merge
9832	* ruintime error will not make this snapshot inconsistent because of
9833	* the partially merged or corrupted hard disks */
9834
9835	/* second pass: */
9836	LogFlowThisFunc (("2: Discarding snapshot...\n"));
9837
9838	{
9839	/* for now, the snapshot must have only one child when discarded,
9840	* or no children at all */
9841	ComAssertThrow (aTask.snapshot->children().size() <= 1, E_FAIL);
9842
9843	ComObjPtr <Snapshot> parentSnapshot = aTask.snapshot->parent();
9844
9845	/// @todo (dmik):
9846	// when we introduce clones later, discarding the snapshot
9847	// will affect the current and first snapshots of clones, if they are
9848	// direct children of this snapshot. So we will need to lock machines
9849	// associated with child snapshots as well and update mCurrentSnapshot
9850	// and/or mFirstSnapshot fields.
9851
9852	if (aTask.snapshot == mData->mCurrentSnapshot)
9853	{
9854	/* currently, the parent snapshot must refer to the same machine */
9855	/// @todo NEWMEDIA not really clear why
9856	ComAssertThrow (
9857	!parentSnapshot \|\|
9858	parentSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
9859	E_FAIL);
9860	mData->mCurrentSnapshot = parentSnapshot;
9861
9862	/* we've changed the base of the current state so mark it as
9863	* modified as it no longer guaranteed to be its copy */
9864	mData->mCurrentStateModified = TRUE;
9865	}
9866
9867	if (aTask.snapshot == mData->mFirstSnapshot)
9868	{
9869	if (aTask.snapshot->children().size() == 1)
9870	{
9871	ComObjPtr <Snapshot> childSnapshot =
9872	aTask.snapshot->children().front();
9873	ComAssertThrow (
9874	childSnapshot->data().mMachine->mData->mUuid == mData->mUuid,
9875	E_FAIL);
9876	mData->mFirstSnapshot = childSnapshot;
9877	}
9878	else
9879	mData->mFirstSnapshot.setNull();
9880	}
9881
9882	Bstr stateFilePath = aTask.snapshot->stateFilePath();
9883
9884	/* Note that discarding the snapshot will deassociate it from the
9885	* hard disks which will allow the merge+delete operation for them*/
9886	aTask.snapshot->discard();
9887
9888	rc = saveSnapshotSettings (parentSnapshot, SaveSS_UpdateAllOp \|
9889	SaveSS_CurrentId \|
9890	SaveSS_CurStateModified);
9891	CheckComRCThrowRC (rc);
9892
9893	/// @todo (dmik)
9894	// if we implement some warning mechanism later, we'll have
9895	// to return a warning if the state file path cannot be deleted
9896	if (stateFilePath)
9897	{
9898	aTask.progress->advanceOperation (
9899	Bstr (tr ("Discarding the execution state")));
9900
9901	RTFileDelete (Utf8Str (stateFilePath));
9902	}
9903
9904	/// @todo NEWMEDIA to provide a good level of fauilt tolerance, we
9905	/// should restore the shapshot in the snapshot tree if
9906	/// saveSnapshotSettings fails. Actually, we may call
9907	/// #saveSnapshotSettings() with a special flag that will tell it to
9908	/// skip the given snapshot as if it would have been discarded and
9909	/// only actually discard it if the save operation succeeds.
9910	}
9911
9912	/* here we come when we've irrevesibly discarded the snapshot which
9913	* means that the VM settigns (our relevant changes to mData) need to be
9914	* saved too */
9915	/// @todo NEWMEDIA maybe save everything in one operation in place of
9916	/// saveSnapshotSettings() above
9917	settingsChanged = true;
9918
9919	/* third pass: */
9920	LogFlowThisFunc (("3: Performing actual hard disk merging...\n"));
9921
9922	/* leave the locks before the potentially lengthy operation */
9923	alock.leave();
9924
9925	/// @todo NEWMEDIA turn the following errors into warnings because the
9926	/// snapshot itself has been already deleted (and interpret these
9927	/// warnings properly on the GUI side)
9928
9929	for (HardDiskDiscardRecList::iterator it = toDiscard.begin();
9930	it != toDiscard.end();)
9931	{
9932	rc = it->hd->discard (aTask.progress, it->chain);
9933	CheckComRCBreakRC (rc);
9934
9935	/* prevent from calling cancelDiscard() */
9936	it = toDiscard.erase (it);
9937	}
9938
9939	alock.enter();
9940
9941	CheckComRCThrowRC (rc);
9942	}
9943	catch (HRESULT aRC) { rc = aRC; }
9944
9945	if FAILED (rc)
9946	{
9947	HRESULT rc2 = S_OK;
9948
9949	/* un-prepare the remaining hard disks */
9950	for (HardDiskDiscardRecList::const_iterator it = toDiscard.begin();
9951	it != toDiscard.end(); ++ it)
9952	{
9953	it->hd->cancelDiscard (it->chain);
9954
9955	if (!it->replaceHd.isNull())
9956	{
9957	/* undo hard disk replacement */
9958
9959	rc2 = it->replaceHd->attachTo (mData->mUuid, it->snapshotId);
9960	AssertComRC (rc2);
9961
9962	rc2 = it->hd->detachFrom (mData->mUuid, it->snapshotId);
9963	AssertComRC (rc2);
9964
9965	AutoWriteLock attLock (it->replaceHda);
9966	it->replaceHda->updateHardDisk (it->replaceHd, false /* aImplicit */);
9967	}
9968	}
9969	}
9970
9971	if (!aTask.subTask \|\| FAILED (rc))
9972	{
9973	if (!aTask.subTask)
9974	{
9975	/* saveSettings() below needs a VirtualBox write lock and we need to
9976	* leave this object's lock to do this to follow the {parent-child}
9977	* locking rule. This is the last chance to do that while we are
9978	* still in a protective state which allows us to temporarily leave
9979	* the lock */
9980	alock.unlock();
9981	vboxLock.lock();
9982	alock.lock();
9983
9984	/* preserve existing error info */
9985	ErrorInfoKeeper eik;
9986
9987	/* restore the machine state */
9988	setMachineState (aTask.state);
9989	updateMachineStateOnClient();
9990
9991	if (settingsChanged)
9992	saveSettings (SaveS_InformCallbacksAnyway);
9993	}
9994
9995	/* set the result (this will try to fetch current error info on failure) */
9996	aTask.progress->notifyComplete (rc);
9997	}
9998
9999	if (SUCCEEDED (rc))
10000	mParent->onSnapshotDiscarded (mData->mUuid, snapshotId);
10001
10002	LogFlowThisFunc (("Done discarding snapshot (rc=%08X)\n", rc));
10003	LogFlowThisFuncLeave();
10004	}
10005
10006	/**
10007	* Discard current state task handler. Must be called only by
10008	* DiscardCurrentStateTask::handler()!
10009	*
10010	* @note Locks mParent + this object for writing.
10011	*/
10012	void SessionMachine::discardCurrentStateHandler (DiscardCurrentStateTask &aTask)
10013	{
10014	LogFlowThisFuncEnter();
10015
10016	AutoCaller autoCaller (this);
10017
10018	LogFlowThisFunc (("state=%d\n", autoCaller.state()));
10019	if (!autoCaller.isOk())
10020	{
10021	/* we might have been uninitialized because the session was accidentally
10022	* closed by the client, so don't assert */
10023	aTask.progress->notifyComplete (
10024	E_FAIL, COM_IIDOF (IMachine), getComponentName(),
10025	tr ("The session has been accidentally closed"));
10026
10027	LogFlowThisFuncLeave();
10028	return;
10029	}
10030
10031	/* saveSettings() needs mParent lock */
10032	AutoWriteLock vboxLock (mParent);
10033
10034	/* @todo We don't need mParent lock so far so unlock() it. Better is to
10035	* provide an AutoWriteLock argument that lets create a non-locking
10036	* instance */
10037	vboxLock.unlock();
10038
10039	AutoWriteLock alock (this);
10040
10041	/* discard all current changes to mUserData (name, OSType etc.) (note that
10042	* the machine is powered off, so there is no need to inform the direct
10043	* session) */
10044	if (isModified())
10045	rollback (false /* aNotify */);
10046
10047	HRESULT rc = S_OK;
10048
10049	bool errorInSubtask = false;
10050	bool stateRestored = false;
10051
10052	const bool isLastSnapshot = mData->mCurrentSnapshot->parent().isNull();
10053
10054	try
10055	{
10056	/* discard the saved state file if the machine was Saved prior to this
10057	* operation */
10058	if (aTask.state == MachineState_Saved)
10059	{
10060	Assert (!mSSData->mStateFilePath.isEmpty());
10061	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10062	mSSData->mStateFilePath.setNull();
10063	aTask.modifyLastState (MachineState_PoweredOff);
10064	rc = saveStateSettings (SaveSTS_StateFilePath);
10065	CheckComRCThrowRC (rc);
10066	}
10067
10068	if (aTask.discardCurrentSnapshot && !isLastSnapshot)
10069	{
10070	/* the "discard current snapshot and state" task is in action, the
10071	* current snapshot is not the last one. Discard the current
10072	* snapshot first */
10073
10074	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10075	subTask.subTask = true;
10076	discardSnapshotHandler (subTask);
10077
10078	AutoCaller progressCaller (aTask.progress);
10079	AutoReadLock progressLock (aTask.progress);
10080	if (aTask.progress->completed())
10081	{
10082	/* the progress can be completed by a subtask only if there was
10083	* a failure */
10084	rc = aTask.progress->resultCode();
10085	Assert (FAILED (rc));
10086	errorInSubtask = true;
10087	throw rc;
10088	}
10089	}
10090
10091	RTTIMESPEC snapshotTimeStamp;
10092	RTTimeSpecSetMilli (&snapshotTimeStamp, 0);
10093
10094	{
10095	ComObjPtr <Snapshot> curSnapshot = mData->mCurrentSnapshot;
10096	AutoReadLock snapshotLock (curSnapshot);
10097
10098	/* remember the timestamp of the snapshot we're restoring from */
10099	snapshotTimeStamp = curSnapshot->data().mTimeStamp;
10100
10101	/* copy all hardware data from the current snapshot */
10102	copyFrom (curSnapshot->data().mMachine);
10103
10104	LogFlowThisFunc (("Restoring hard disks from the snapshot...\n"));
10105
10106	/* restore the attachmends from the snapshot */
10107	mHDData.backup();
10108	mHDData->mAttachments =
10109	curSnapshot->data().mMachine->mHDData->mAttachments;
10110
10111	/* leave the locks before the potentially lengthy operation */
10112	snapshotLock.unlock();
10113	alock.leave();
10114
10115	rc = createImplicitDiffs (mUserData->mSnapshotFolderFull,
10116	aTask.progress,
10117	false /* aOnline */);
10118
10119	alock.enter();
10120	snapshotLock.lock();
10121
10122	CheckComRCThrowRC (rc);
10123
10124	/* Note: on success, current (old) hard disks will be
10125	* deassociated/deleted on #commit() called from #saveSettings() at
10126	* the end. On failure, newly created implicit diffs will be
10127	* deleted by #rollback() at the end. */
10128
10129	/* should not have a saved state file associated at this point */
10130	Assert (mSSData->mStateFilePath.isNull());
10131
10132	if (curSnapshot->stateFilePath())
10133	{
10134	Utf8Str snapStateFilePath = curSnapshot->stateFilePath();
10135
10136	Utf8Str stateFilePath = Utf8StrFmt ("%ls%c{%RTuuid}.sav",
10137	mUserData->mSnapshotFolderFull.raw(),
10138	RTPATH_DELIMITER, mData->mUuid.raw());
10139
10140	LogFlowThisFunc (("Copying saved state file from '%s' to '%s'...\n",
10141	snapStateFilePath.raw(), stateFilePath.raw()));
10142
10143	aTask.progress->advanceOperation (
10144	Bstr (tr ("Restoring the execution state")));
10145
10146	/* leave the lock before the potentially lengthy operation */
10147	snapshotLock.unlock();
10148	alock.leave();
10149
10150	/* copy the state file */
10151	int vrc = RTFileCopyEx (snapStateFilePath, stateFilePath,
10152	0, progressCallback, aTask.progress);
10153
10154	alock.enter();
10155	snapshotLock.lock();
10156
10157	if (RT_SUCCESS (vrc))
10158	{
10159	mSSData->mStateFilePath = stateFilePath;
10160	}
10161	else
10162	{
10163	throw setError (E_FAIL,
10164	tr ("Could not copy the state file '%s' to '%s' (%Rrc)"),
10165	snapStateFilePath.raw(), stateFilePath.raw(), vrc);
10166	}
10167	}
10168	}
10169
10170	/* grab differencing hard disks from the old attachments that will
10171	* become unused and need to be auto-deleted */
10172
10173	std::list <ComObjPtr <HardDisk2> > diffs;
10174
10175	for (HDData::AttachmentList::const_iterator
10176	it = mHDData.backedUpData()->mAttachments.begin();
10177	it != mHDData.backedUpData()->mAttachments.end(); ++ it)
10178	{
10179	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
10180
10181	/* while the hard disk is attached, the number of children or the
10182	* parent cannot change, so no lock */
10183	if (!hd->parent().isNull() && hd->children().size() == 0)
10184	diffs.push_back (hd);
10185	}
10186
10187	int saveFlags = 0;
10188
10189	if (aTask.discardCurrentSnapshot && isLastSnapshot)
10190	{
10191	/* commit changes to have unused diffs deassociated from this
10192	* machine before deletion (see below) */
10193	commit();
10194
10195	/* delete the unused diffs now (and uninit them) because discard
10196	* may fail otherwise (too many children of the hard disk to be
10197	* discarded) */
10198	for (std::list <ComObjPtr <HardDisk2> >::const_iterator
10199	it = diffs.begin(); it != diffs.end(); ++ it)
10200	{
10201	/// @todo for now, we ignore errors since we've already
10202	/// and therefore cannot fail. Later, we may want to report a
10203	/// warning through the Progress object
10204	HRESULT rc2 = (*it)->deleteStorageAndWait();
10205	if (SUCCEEDED (rc2))
10206	(*it)->uninit();
10207	}
10208
10209	/* prevent further deletion */
10210	diffs.clear();
10211
10212	/* discard the current snapshot and state task is in action, the
10213	* current snapshot is the last one. Discard the current snapshot
10214	* after discarding the current state. */
10215
10216	DiscardSnapshotTask subTask (aTask, mData->mCurrentSnapshot);
10217	subTask.subTask = true;
10218	discardSnapshotHandler (subTask);
10219
10220	AutoCaller progressCaller (aTask.progress);
10221	AutoReadLock progressLock (aTask.progress);
10222	if (aTask.progress->completed())
10223	{
10224	/* the progress can be completed by a subtask only if there
10225	* was a failure */
10226	rc = aTask.progress->resultCode();
10227	Assert (FAILED (rc));
10228	errorInSubtask = true;
10229	}
10230
10231	/* we've committed already, so inform callbacks anyway to ensure
10232	* they don't miss some change */
10233	/// @todo NEWMEDIA check if we need this informCallbacks at all
10234	/// after updating discardCurrentSnapshot functionality
10235	saveFlags \|= SaveS_InformCallbacksAnyway;
10236	}
10237
10238	/* @todo saveSettings() below needs a VirtualBox write lock and we need
10239	* to leave this object's lock to do this to follow the {parent-child}
10240	* locking rule. This is the last chance to do that while we are still
10241	* in a protective state which allows us to temporarily leave the lock*/
10242	alock.unlock();
10243	vboxLock.lock();
10244	alock.lock();
10245
10246	/* we have already discarded the current state, so set the execution
10247	* state accordingly no matter of the discard snapshot result */
10248	if (mSSData->mStateFilePath)
10249	setMachineState (MachineState_Saved);
10250	else
10251	setMachineState (MachineState_PoweredOff);
10252
10253	updateMachineStateOnClient();
10254	stateRestored = true;
10255
10256	/* assign the timestamp from the snapshot */
10257	Assert (RTTimeSpecGetMilli (&snapshotTimeStamp) != 0);
10258	mData->mLastStateChange = snapshotTimeStamp;
10259
10260	/* save all settings, reset the modified flag and commit. Note that we
10261	* do so even if the subtask failed (errorInSubtask=true) because we've
10262	* already committed machine data and deleted old diffs before
10263	* discarding the current snapshot so there is no way to rollback */
10264	HRESULT rc2 = saveSettings (SaveS_ResetCurStateModified \| saveFlags);
10265
10266	/// @todo NEWMEDIA return multiple errors
10267	if (errorInSubtask)
10268	throw rc;
10269
10270	rc = rc2;
10271
10272	if (SUCCEEDED (rc))
10273	{
10274	/* now, delete the unused diffs (only on success!) and uninit them*/
10275	for (std::list <ComObjPtr <HardDisk2> >::const_iterator
10276	it = diffs.begin(); it != diffs.end(); ++ it)
10277	{
10278	/// @todo for now, we ignore errors since we've already
10279	/// discarded and therefore cannot fail. Later, we may want to
10280	/// report a warning through the Progress object
10281	HRESULT rc2 = (*it)->deleteStorageAndWait();
10282	if (SUCCEEDED (rc2))
10283	(*it)->uninit();
10284	}
10285	}
10286	}
10287	catch (HRESULT aRC) { rc = aRC; }
10288
10289	if (FAILED (rc))
10290	{
10291	/* preserve existing error info */
10292	ErrorInfoKeeper eik;
10293
10294	if (!errorInSubtask)
10295	{
10296	/* undo all changes on failure unless the subtask has done so */
10297	rollback (false /* aNotify */);
10298	}
10299
10300	if (!stateRestored)
10301	{
10302	/* restore the machine state */
10303	setMachineState (aTask.state);
10304	updateMachineStateOnClient();
10305	}
10306	}
10307
10308	if (!errorInSubtask)
10309	{
10310	/* set the result (this will try to fetch current error info on failure) */
10311	aTask.progress->notifyComplete (rc);
10312	}
10313
10314	if (SUCCEEDED (rc))
10315	mParent->onSnapshotDiscarded (mData->mUuid, Guid());
10316
10317	LogFlowThisFunc (("Done discarding current state (rc=%08X)\n", rc));
10318
10319	LogFlowThisFuncLeave();
10320	}
10321
10322	/**
10323	* Helper to change the machine state (reimplementation).
10324	*
10325	* @note Locks this object for writing.
10326	*/
10327	HRESULT SessionMachine::setMachineState (MachineState_T aMachineState)
10328	{
10329	LogFlowThisFuncEnter();
10330	LogFlowThisFunc (("aMachineState=%d\n", aMachineState));
10331
10332	AutoCaller autoCaller (this);
10333	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10334
10335	AutoWriteLock alock (this);
10336
10337	MachineState_T oldMachineState = mData->mMachineState;
10338
10339	AssertMsgReturn (oldMachineState != aMachineState,
10340	("oldMachineState=%d, aMachineState=%d\n",
10341	oldMachineState, aMachineState), E_FAIL);
10342
10343	HRESULT rc = S_OK;
10344
10345	int stsFlags = 0;
10346	bool deleteSavedState = false;
10347
10348	/* detect some state transitions */
10349
10350	if ((oldMachineState == MachineState_Saved &&
10351	aMachineState == MachineState_Restoring) \|\|
10352	(oldMachineState < MachineState_Running /* any other OFF state */ &&
10353	aMachineState == MachineState_Starting))
10354	{
10355	/* The EMT thread is about to start */
10356
10357	/* Nothing to do here for now... */
10358
10359	/// @todo NEWMEDIA don't let mDVDDrive and other children
10360	/// change anything when in the Starting/Restoring state
10361	}
10362	else
10363	if (oldMachineState >= MachineState_Running &&
10364	oldMachineState != MachineState_Discarding &&
10365	oldMachineState != MachineState_SettingUp &&
10366	aMachineState < MachineState_Running &&
10367	/* ignore PoweredOff->Saving->PoweredOff transition when taking a
10368	* snapshot */
10369	(mSnapshotData.mSnapshot.isNull() \|\|
10370	mSnapshotData.mLastState >= MachineState_Running))
10371	{
10372	/* The EMT thread has just stopped, unlock attached media. Note that
10373	* opposed to locking, we do unlocking here because the VM process may
10374	* have just aborted before properly unlocking all media it locked. */
10375
10376	for (HDData::AttachmentList::const_iterator it =
10377	mHDData->mAttachments.begin();
10378	it != mHDData->mAttachments.end(); ++ it)
10379	{
10380	ComObjPtr <HardDisk2> hd = (*it)->hardDisk();
10381
10382	bool first = true;
10383
10384	while (!hd.isNull())
10385	{
10386	if (first)
10387	{
10388	rc = hd->UnlockWrite (NULL);
10389	AssertComRC (rc);
10390
10391	first = false;
10392	}
10393	else
10394	{
10395	rc = hd->UnlockRead (NULL);
10396	AssertComRC (rc);
10397	}
10398
10399	/* no locks or callers here since there should be no way to
10400	* change the hard disk parent at this point (as it is still
10401	* attached to the machine) */
10402	hd = hd->parent();
10403	}
10404	}
10405	{
10406	AutoReadLock driveLock (mDVDDrive);
10407	if (mDVDDrive->data()->state == DriveState_ImageMounted)
10408	{
10409	rc = mDVDDrive->data()->image->UnlockRead (NULL);
10410	AssertComRC (rc);
10411	}
10412	}
10413	{
10414	AutoReadLock driveLock (mFloppyDrive);
10415	if (mFloppyDrive->data()->state == DriveState_ImageMounted)
10416	{
10417	rc = mFloppyDrive->data()->image->UnlockRead (NULL);
10418	AssertComRC (rc);
10419	}
10420	}
10421	}
10422
10423	if (oldMachineState == MachineState_Restoring)
10424	{
10425	if (aMachineState != MachineState_Saved)
10426	{
10427	/*
10428	* delete the saved state file once the machine has finished
10429	* restoring from it (note that Console sets the state from
10430	* Restoring to Saved if the VM couldn't restore successfully,
10431	* to give the user an ability to fix an error and retry --
10432	* we keep the saved state file in this case)
10433	*/
10434	deleteSavedState = true;
10435	}
10436	}
10437	else
10438	if (oldMachineState == MachineState_Saved &&
10439	(aMachineState == MachineState_PoweredOff \|\|
10440	aMachineState == MachineState_Aborted))
10441	{
10442	/*
10443	* delete the saved state after Console::DiscardSavedState() is called
10444	* or if the VM process (owning a direct VM session) crashed while the
10445	* VM was Saved
10446	*/
10447
10448	/// @todo (dmik)
10449	// Not sure that deleting the saved state file just because of the
10450	// client death before it attempted to restore the VM is a good
10451	// thing. But when it crashes we need to go to the Aborted state
10452	// which cannot have the saved state file associated... The only
10453	// way to fix this is to make the Aborted condition not a VM state
10454	// but a bool flag: i.e., when a crash occurs, set it to true and
10455	// change the state to PoweredOff or Saved depending on the
10456	// saved state presence.
10457
10458	deleteSavedState = true;
10459	mData->mCurrentStateModified = TRUE;
10460	stsFlags \|= SaveSTS_CurStateModified;
10461	}
10462
10463	if (aMachineState == MachineState_Starting \|\|
10464	aMachineState == MachineState_Restoring)
10465	{
10466	/* set the current state modified flag to indicate that the current
10467	* state is no more identical to the state in the
10468	* current snapshot */
10469	if (!mData->mCurrentSnapshot.isNull())
10470	{
10471	mData->mCurrentStateModified = TRUE;
10472	stsFlags \|= SaveSTS_CurStateModified;
10473	}
10474	}
10475
10476	if (deleteSavedState == true)
10477	{
10478	Assert (!mSSData->mStateFilePath.isEmpty());
10479	RTFileDelete (Utf8Str (mSSData->mStateFilePath));
10480	mSSData->mStateFilePath.setNull();
10481	stsFlags \|= SaveSTS_StateFilePath;
10482	}
10483
10484	/* redirect to the underlying peer machine */
10485	mPeer->setMachineState (aMachineState);
10486
10487	if (aMachineState == MachineState_PoweredOff \|\|
10488	aMachineState == MachineState_Aborted \|\|
10489	aMachineState == MachineState_Saved)
10490	{
10491	/* the machine has stopped execution
10492	* (or the saved state file was adopted) */
10493	stsFlags \|= SaveSTS_StateTimeStamp;
10494	}
10495
10496	if ((oldMachineState == MachineState_PoweredOff \|\|
10497	oldMachineState == MachineState_Aborted) &&
10498	aMachineState == MachineState_Saved)
10499	{
10500	/* the saved state file was adopted */
10501	Assert (!mSSData->mStateFilePath.isNull());
10502	stsFlags \|= SaveSTS_StateFilePath;
10503	}
10504
10505	rc = saveStateSettings (stsFlags);
10506
10507	if ((oldMachineState != MachineState_PoweredOff &&
10508	oldMachineState != MachineState_Aborted) &&
10509	(aMachineState == MachineState_PoweredOff \|\|
10510	aMachineState == MachineState_Aborted))
10511	{
10512	/* we've been shut down for any reason */
10513	/* no special action so far */
10514	}
10515
10516	LogFlowThisFunc (("rc=%08X\n", rc));
10517	LogFlowThisFuncLeave();
10518	return rc;
10519	}
10520
10521	/**
10522	* Sends the current machine state value to the VM process.
10523	*
10524	* @note Locks this object for reading, then calls a client process.
10525	*/
10526	HRESULT SessionMachine::updateMachineStateOnClient()
10527	{
10528	AutoCaller autoCaller (this);
10529	AssertComRCReturn (autoCaller.rc(), autoCaller.rc());
10530
10531	ComPtr <IInternalSessionControl> directControl;
10532	{
10533	AutoReadLock alock (this);
10534	AssertReturn (!!mData, E_FAIL);
10535	directControl = mData->mSession.mDirectControl;
10536
10537	/* directControl may be already set to NULL here in #OnSessionEnd()
10538	* called too early by the direct session process while there is still
10539	* some operation (like discarding the snapshot) in progress. The client
10540	* process in this case is waiting inside Session::close() for the
10541	* "end session" process object to complete, while #uninit() called by
10542	* #checkForDeath() on the Watcher thread is waiting for the pending
10543	* operation to complete. For now, we accept this inconsitent behavior
10544	* and simply do nothing here. */
10545
10546	if (mData->mSession.mState == SessionState_Closing)
10547	return S_OK;
10548
10549	AssertReturn (!directControl.isNull(), E_FAIL);
10550	}
10551
10552	return directControl->UpdateMachineState (mData->mMachineState);
10553	}
10554
10555	/* static */
10556	DECLCALLBACK(int) SessionMachine::taskHandler (RTTHREAD thread, void *pvUser)
10557	{
10558	AssertReturn (pvUser, VERR_INVALID_POINTER);
10559
10560	Task task = static_cast <Task > (pvUser);
10561	task->handler();
10562
10563	// it's our responsibility to delete the task
10564	delete task;
10565
10566	return 0;
10567	}
10568
10569	/////////////////////////////////////////////////////////////////////////////
10570	// SnapshotMachine class
10571	/////////////////////////////////////////////////////////////////////////////
10572
10573	DEFINE_EMPTY_CTOR_DTOR (SnapshotMachine)
10574
10575	HRESULT SnapshotMachine::FinalConstruct()
10576	{
10577	LogFlowThisFunc (("\n"));
10578
10579	/* set the proper type to indicate we're the SnapshotMachine instance */
10580	unconst (mType) = IsSnapshotMachine;
10581
10582	return S_OK;
10583	}
10584
10585	void SnapshotMachine::FinalRelease()
10586	{
10587	LogFlowThisFunc (("\n"));
10588
10589	uninit();
10590	}
10591
10592	/**
10593	* Initializes the SnapshotMachine object when taking a snapshot.
10594	*
10595	* @param aSessionMachine machine to take a snapshot from
10596	* @param aSnapshotId snapshot ID of this snapshot machine
10597	* @param aStateFilePath file where the execution state will be later saved
10598	* (or NULL for the offline snapshot)
10599	*
10600	* @note The aSessionMachine must be locked for writing.
10601	*/
10602	HRESULT SnapshotMachine::init (SessionMachine *aSessionMachine,
10603	IN_GUID aSnapshotId,
10604	IN_BSTR aStateFilePath)
10605	{
10606	LogFlowThisFuncEnter();
10607	LogFlowThisFunc (("mName={%ls}\n", aSessionMachine->mUserData->mName.raw()));
10608
10609	AssertReturn (aSessionMachine && !Guid (aSnapshotId).isEmpty(), E_INVALIDARG);
10610
10611	/* Enclose the state transition NotReady->InInit->Ready */
10612	AutoInitSpan autoInitSpan (this);
10613	AssertReturn (autoInitSpan.isOk(), E_FAIL);
10614
10615	AssertReturn (aSessionMachine->isWriteLockOnCurrentThread(), E_FAIL);
10616
10617	mSnapshotId = aSnapshotId;
10618
10619	/* memorize the primary Machine instance (i.e. not SessionMachine!) */
10620	unconst (mPeer) = aSessionMachine->mPeer;
10621	/* share the parent pointer */
10622	unconst (mParent) = mPeer->mParent;
10623
10624	/* take the pointer to Data to share */
10625	mData.share (mPeer->mData);
10626
10627	/* take the pointer to UserData to share (our UserData must always be the
10628	* same as Machine's data) */
10629	mUserData.share (mPeer->mUserData);
10630	/* make a private copy of all other data (recent changes from SessionMachine) */
10631	mHWData.attachCopy (aSessionMachine->mHWData);
10632	mHDData.attachCopy (aSessionMachine->mHDData);
10633
10634	/* SSData is always unique for SnapshotMachine */
10635	mSSData.allocate();
10636	mSSData->mStateFilePath = aStateFilePath;
10637
10638	HRESULT rc = S_OK;
10639
10640	/* create copies of all shared folders (mHWData after attiching a copy
10641	* contains just references to original objects) */
10642	for (HWData::SharedFolderList::iterator
10643	it = mHWData->mSharedFolders.begin();
10644	it != mHWData->mSharedFolders.end();
10645	++ it)
10646	{
10647	ComObjPtr <SharedFolder> folder;
10648	folder.createObject();
10649	rc = folder->initCopy (this, *it);
10650	CheckComRCReturnRC (rc);
10651	*it = folder;
10652	}
10653
10654	/* associate hard disks with the snapshot
10655	* (Machine::uninitDataAndChildObjects() will deassociate at destruction) */
10656	for (HDData::AttachmentList::const_iterator
10657	it = mHDData->mAttachments.begin();
10658	it != mHDData->mAttachments.end();
10659	++ it)
10660	{
10661	rc = (*it)->hardDisk()->attachTo (mData->mUuid, mSnapshotId);
10662	AssertComRC (rc);
10663	}
10664
10665	/* create all other child objects that will be immutable private copies */
10666
10667	unconst (mBIOSSettings).createObject();
10668	mBIOSSettings->initCopy (this, mPeer->mBIOSSettings);
10669
10670	#ifdef VBOX_WITH_VRDP
10671	unconst (mVRDPServer).createObject();
10672	mVRDPServer->initCopy (this, mPeer->mVRDPServer);
10673	#endif
10674
10675	unconst (mDVDDrive).createObject();
10676	mDVDDrive->initCopy (this, mPeer->mDVDDrive);
10677
10678	unconst (mFloppyDrive).createObject();
10679	mFloppyDrive->initCopy (this, mPeer->mFloppyDrive);
10680
10681	unconst (mAudioAdapter).createObject();
10682	mAudioAdapter->initCopy (this, mPeer->mAudioAdapter);
10683
10684	unconst (mUSBController).createObject();
10685	mUSBController->initCopy (this, mPeer->mUSBController);
10686
10687	unconst (mSATAController).createObject();
10688	mSATAController->initCopy (this, mPeer->mSATAController);
10689
10690	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
10691	{
10692	unconst (mNetworkAdapters [slot]).createObject();
10693	mNetworkAdapters [slot]->initCopy (this, mPeer->mNetworkAdapters [slot]);
10694	}
10695
10696	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
10697	{
10698	unconst (mSerialPorts [slot]).createObject();
10699	mSerialPorts [slot]->initCopy (this, mPeer->mSerialPorts [slot]);
10700	}
10701
10702	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
10703	{
10704	unconst (mParallelPorts [slot]).createObject();
10705	mParallelPorts [slot]->initCopy (this, mPeer->mParallelPorts [slot]);
10706	}
10707
10708	/* Confirm a successful initialization when it's the case */
10709	autoInitSpan.setSucceeded();
10710
10711	LogFlowThisFuncLeave();
10712	return S_OK;
10713	}
10714
10715	/**
10716	* Initializes the SnapshotMachine object when loading from the settings file.
10717	*
10718	* @param aMachine machine the snapshot belngs to
10719	* @param aHWNode <Hardware> node
10720	* @param aHDAsNode <HardDiskAttachments> node
10721	* @param aSnapshotId snapshot ID of this snapshot machine
10722	* @param aStateFilePath file where the execution state is saved
10723	* (or NULL for the offline snapshot)
10724	*
10725	* @note Doesn't lock anything.
10726	*/
10727	HRESULT SnapshotMachine::init (Machine *aMachine,
10728	const settings::Key &aHWNode,
10729	const settings::Key &aHDAsNode,
10730	IN_GUID aSnapshotId, IN_BSTR aStateFilePath)
10731	{
10732	LogFlowThisFuncEnter();
10733	LogFlowThisFunc (("mName={%ls}\n", aMachine->mUserData->mName.raw()));
10734
10735	AssertReturn (aMachine && !aHWNode.isNull() && !aHDAsNode.isNull() &&
10736	!Guid (aSnapshotId).isEmpty(),
10737	E_INVALIDARG);
10738
10739	/* Enclose the state transition NotReady->InInit->Ready */
10740	AutoInitSpan autoInitSpan (this);
10741	AssertReturn (autoInitSpan.isOk(), E_FAIL);
10742
10743	/* Don't need to lock aMachine when VirtualBox is starting up */
10744
10745	mSnapshotId = aSnapshotId;
10746
10747	/* memorize the primary Machine instance */
10748	unconst (mPeer) = aMachine;
10749	/* share the parent pointer */
10750	unconst (mParent) = mPeer->mParent;
10751
10752	/* take the pointer to Data to share */
10753	mData.share (mPeer->mData);
10754	/*
10755	* take the pointer to UserData to share
10756	* (our UserData must always be the same as Machine's data)
10757	*/
10758	mUserData.share (mPeer->mUserData);
10759	/* allocate private copies of all other data (will be loaded from settings) */
10760	mHWData.allocate();
10761	mHDData.allocate();
10762
10763	/* SSData is always unique for SnapshotMachine */
10764	mSSData.allocate();
10765	mSSData->mStateFilePath = aStateFilePath;
10766
10767	/* create all other child objects that will be immutable private copies */
10768
10769	unconst (mBIOSSettings).createObject();
10770	mBIOSSettings->init (this);
10771
10772	#ifdef VBOX_WITH_VRDP
10773	unconst (mVRDPServer).createObject();
10774	mVRDPServer->init (this);
10775	#endif
10776
10777	unconst (mDVDDrive).createObject();
10778	mDVDDrive->init (this);
10779
10780	unconst (mFloppyDrive).createObject();
10781	mFloppyDrive->init (this);
10782
10783	unconst (mAudioAdapter).createObject();
10784	mAudioAdapter->init (this);
10785
10786	unconst (mUSBController).createObject();
10787	mUSBController->init (this);
10788
10789	unconst (mSATAController).createObject();
10790	mSATAController->init (this);
10791
10792	for (ULONG slot = 0; slot < RT_ELEMENTS (mNetworkAdapters); slot ++)
10793	{
10794	unconst (mNetworkAdapters [slot]).createObject();
10795	mNetworkAdapters [slot]->init (this, slot);
10796	}
10797
10798	for (ULONG slot = 0; slot < RT_ELEMENTS (mSerialPorts); slot ++)
10799	{
10800	unconst (mSerialPorts [slot]).createObject();
10801	mSerialPorts [slot]->init (this, slot);
10802	}
10803
10804	for (ULONG slot = 0; slot < RT_ELEMENTS (mParallelPorts); slot ++)
10805	{
10806	unconst (mParallelPorts [slot]).createObject();
10807	mParallelPorts [slot]->init (this, slot);
10808	}
10809
10810	/* load hardware and harddisk settings */
10811
10812	HRESULT rc = loadHardware (aHWNode);
10813	if (SUCCEEDED (rc))
10814	rc = loadHardDisks (aHDAsNode, true /* aRegistered */, &mSnapshotId);
10815
10816	if (SUCCEEDED (rc))
10817	{
10818	/* commit all changes made during the initialization */
10819	commit();
10820	}
10821
10822	/* Confirm a successful initialization when it's the case */
10823	if (SUCCEEDED (rc))
10824	autoInitSpan.setSucceeded();
10825
10826	LogFlowThisFuncLeave();
10827	return rc;
10828	}
10829
10830	/**
10831	* Uninitializes this SnapshotMachine object.
10832	*/
10833	void SnapshotMachine::uninit()
10834	{
10835	LogFlowThisFuncEnter();
10836
10837	/* Enclose the state transition Ready->InUninit->NotReady */
10838	AutoUninitSpan autoUninitSpan (this);
10839	if (autoUninitSpan.uninitDone())
10840	return;
10841
10842	uninitDataAndChildObjects();
10843
10844	/* free the essential data structure last */
10845	mData.free();
10846
10847	unconst (mParent).setNull();
10848	unconst (mPeer).setNull();
10849
10850	LogFlowThisFuncLeave();
10851	}
10852
10853	// util::Lockable interface
10854	////////////////////////////////////////////////////////////////////////////////
10855
10856	/**
10857	* Overrides VirtualBoxBase::lockHandle() in order to share the lock handle
10858	* with the primary Machine instance (mPeer).
10859	*/
10860	RWLockHandle *SnapshotMachine::lockHandle() const
10861	{
10862	AssertReturn (!mPeer.isNull(), NULL);
10863	return mPeer->lockHandle();
10864	}
10865
10866	// public methods only for internal purposes
10867	////////////////////////////////////////////////////////////////////////////////
10868
10869	/**
10870	* Called by the snapshot object associated with this SnapshotMachine when
10871	* snapshot data such as name or description is changed.
10872	*
10873	* @note Locks this object for writing.
10874	*/
10875	HRESULT SnapshotMachine::onSnapshotChange (Snapshot *aSnapshot)
10876	{
10877	AutoWriteLock alock (this);
10878
10879	mPeer->saveSnapshotSettings (aSnapshot, SaveSS_UpdateAttrsOp);
10880
10881	/* inform callbacks */
10882	mParent->onSnapshotChange (mData->mUuid, aSnapshot->data().mId);
10883
10884	return S_OK;
10885	}
10886	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/MachineImpl.cpp@ 16774

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