GuestCtrlPrivate.cpp@ 56085

Last change on this file since 56085 was 56030, checked in by vboxsync, 10 years ago
postfix iterator => prefix iterator and stlSize => stlEmpty where appropriate
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 31.1 KB

Line
1	/* $Id: GuestCtrlPrivate.cpp 56030 2015-05-22 14:06:29Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/******************************************************************************
19	* Header Files *
20	******************************************************************************/
21	#ifndef VBOX_WITH_GUEST_CONTROL
22	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
23	#endif
24	#include "GuestCtrlImplPrivate.h"
25	#include "GuestSessionImpl.h"
26	#include "VMMDev.h"
27
28	#include <iprt/asm.h>
29	#include <iprt/cpp/utils.h> /* For unconst(). */
30	#include <iprt/ctype.h>
31	#ifdef DEBUG
32	# include <iprt/file.h>
33	#endif /* DEBUG */
34
35	#ifdef LOG_GROUP
36	#undef LOG_GROUP
37	#endif
38	#define LOG_GROUP LOG_GROUP_GUEST_CONTROL
39	#include <VBox/log.h>
40
41
42
43	int GuestFsObjData::FromLs(const GuestProcessStreamBlock &strmBlk)
44	{
45	LogFlowFunc(("\n"));
46
47	int rc = VINF_SUCCESS;
48
49	try
50	{
51	#ifdef DEBUG
52	strmBlk.DumpToLog();
53	#endif
54	/* Object name. */
55	mName = strmBlk.GetString("name");
56	if (mName.isEmpty()) throw VERR_NOT_FOUND;
57	/* Type. */
58	Utf8Str strType(strmBlk.GetString("ftype"));
59	if (strType.equalsIgnoreCase("-"))
60	mType = FsObjType_File;
61	else if (strType.equalsIgnoreCase("d"))
62	mType = FsObjType_Directory;
63	/** @todo Add more types! */
64	else
65	mType = FsObjType_Unknown;
66	/* Object size. */
67	rc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
68	if (RT_FAILURE(rc)) throw rc;
69	/** @todo Add complete ls info! */
70	}
71	catch (int rc2)
72	{
73	rc = rc2;
74	}
75
76	LogFlowFuncLeaveRC(rc);
77	return rc;
78	}
79
80	int GuestFsObjData::FromMkTemp(const GuestProcessStreamBlock &strmBlk)
81	{
82	LogFlowFunc(("\n"));
83
84	int rc;
85
86	try
87	{
88	#ifdef DEBUG
89	strmBlk.DumpToLog();
90	#endif
91	/* Object name. */
92	mName = strmBlk.GetString("name");
93	if (mName.isEmpty()) throw VERR_NOT_FOUND;
94	/* Assign the stream block's rc. */
95	rc = strmBlk.GetRc();
96	}
97	catch (int rc2)
98	{
99	rc = rc2;
100	}
101
102	LogFlowFuncLeaveRC(rc);
103	return rc;
104	}
105
106	int GuestFsObjData::FromStat(const GuestProcessStreamBlock &strmBlk)
107	{
108	LogFlowFunc(("\n"));
109
110	int rc = VINF_SUCCESS;
111
112	try
113	{
114	#ifdef DEBUG
115	strmBlk.DumpToLog();
116	#endif
117	/* Node ID, optional because we don't include this
118	* in older VBoxService (< 4.2) versions. */
119	mNodeID = strmBlk.GetInt64("node_id");
120	/* Object name. */
121	mName = strmBlk.GetString("name");
122	if (mName.isEmpty()) throw VERR_NOT_FOUND;
123	/* Type. */
124	Utf8Str strType(strmBlk.GetString("ftype"));
125	if (strType.equalsIgnoreCase("-"))
126	mType = FsObjType_File;
127	else if (strType.equalsIgnoreCase("d"))
128	mType = FsObjType_Directory;
129	/** @todo Add more types! */
130	else
131	mType = FsObjType_Unknown;
132	/* Object size. */
133	rc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
134	if (RT_FAILURE(rc)) throw rc;
135	/** @todo Add complete stat info! */
136	}
137	catch (int rc2)
138	{
139	rc = rc2;
140	}
141
142	LogFlowFuncLeaveRC(rc);
143	return rc;
144	}
145
146	///////////////////////////////////////////////////////////////////////////////
147
148	/** @todo NOT thread safe yet! */
149	/** @todo Add exception handling for STL stuff! */
150
151	GuestProcessStreamBlock::GuestProcessStreamBlock(void)
152	{
153
154	}
155
156	/*
157	GuestProcessStreamBlock::GuestProcessStreamBlock(const GuestProcessStreamBlock &otherBlock)
158	{
159	for (GuestCtrlStreamPairsIter it = otherBlock.mPairs.begin();
160	it != otherBlock.end(); ++it)
161	{
162	mPairs[it->first] = new
163	if (it->second.pszValue)
164	{
165	RTMemFree(it->second.pszValue);
166	it->second.pszValue = NULL;
167	}
168	}
169	}*/
170
171	GuestProcessStreamBlock::~GuestProcessStreamBlock()
172	{
173	Clear();
174	}
175
176	/**
177	* Destroys the currently stored stream pairs.
178	*
179	* @return IPRT status code.
180	*/
181	void GuestProcessStreamBlock::Clear(void)
182	{
183	mPairs.clear();
184	}
185
186	#ifdef DEBUG
187	void GuestProcessStreamBlock::DumpToLog(void) const
188	{
189	LogFlowFunc(("Dumping contents of stream block=0x%p (%ld items):\n",
190	this, mPairs.size()));
191
192	for (GuestCtrlStreamPairMapIterConst it = mPairs.begin();
193	it != mPairs.end(); ++it)
194	{
195	LogFlowFunc(("\t%s=%s\n", it->first.c_str(), it->second.mValue.c_str()));
196	}
197	}
198	#endif
199
200	/**
201	* Returns a 64-bit signed integer of a specified key.
202	*
203	* @return IPRT status code. VERR_NOT_FOUND if key was not found.
204	* @param pszKey Name of key to get the value for.
205	* @param piVal Pointer to value to return.
206	*/
207	int GuestProcessStreamBlock::GetInt64Ex(const char pszKey, int64_t piVal) const
208	{
209	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
210	AssertPtrReturn(piVal, VERR_INVALID_POINTER);
211	const char *pszValue = GetString(pszKey);
212	if (pszValue)
213	{
214	*piVal = RTStrToInt64(pszValue);
215	return VINF_SUCCESS;
216	}
217	return VERR_NOT_FOUND;
218	}
219
220	/**
221	* Returns a 64-bit integer of a specified key.
222	*
223	* @return int64_t Value to return, 0 if not found / on failure.
224	* @param pszKey Name of key to get the value for.
225	*/
226	int64_t GuestProcessStreamBlock::GetInt64(const char *pszKey) const
227	{
228	int64_t iVal;
229	if (RT_SUCCESS(GetInt64Ex(pszKey, &iVal)))
230	return iVal;
231	return 0;
232	}
233
234	/**
235	* Returns the current number of stream pairs.
236	*
237	* @return uint32_t Current number of stream pairs.
238	*/
239	size_t GuestProcessStreamBlock::GetCount(void) const
240	{
241	return mPairs.size();
242	}
243
244	/**
245	* Gets the return code (name = "rc") of this stream block.
246	*
247	* @return IPRT status code.
248	*/
249	int GuestProcessStreamBlock::GetRc(void) const
250	{
251	const char *pszValue = GetString("rc");
252	if (pszValue)
253	{
254	return RTStrToInt16(pszValue);
255	}
256	return VERR_NOT_FOUND;
257	}
258
259	/**
260	* Returns a string value of a specified key.
261	*
262	* @return uint32_t Pointer to string to return, NULL if not found / on failure.
263	* @param pszKey Name of key to get the value for.
264	*/
265	const char* GuestProcessStreamBlock::GetString(const char *pszKey) const
266	{
267	AssertPtrReturn(pszKey, NULL);
268
269	try
270	{
271	GuestCtrlStreamPairMapIterConst itPairs = mPairs.find(Utf8Str(pszKey));
272	if (itPairs != mPairs.end())
273	return itPairs->second.mValue.c_str();
274	}
275	catch (const std::exception &ex)
276	{
277	NOREF(ex);
278	}
279	return NULL;
280	}
281
282	/**
283	* Returns a 32-bit unsigned integer of a specified key.
284	*
285	* @return IPRT status code. VERR_NOT_FOUND if key was not found.
286	* @param pszKey Name of key to get the value for.
287	* @param puVal Pointer to value to return.
288	*/
289	int GuestProcessStreamBlock::GetUInt32Ex(const char pszKey, uint32_t puVal) const
290	{
291	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
292	AssertPtrReturn(puVal, VERR_INVALID_POINTER);
293	const char *pszValue = GetString(pszKey);
294	if (pszValue)
295	{
296	*puVal = RTStrToUInt32(pszValue);
297	return VINF_SUCCESS;
298	}
299	return VERR_NOT_FOUND;
300	}
301
302	/**
303	* Returns a 32-bit unsigned integer of a specified key.
304	*
305	* @return uint32_t Value to return, 0 if not found / on failure.
306	* @param pszKey Name of key to get the value for.
307	*/
308	uint32_t GuestProcessStreamBlock::GetUInt32(const char *pszKey) const
309	{
310	uint32_t uVal;
311	if (RT_SUCCESS(GetUInt32Ex(pszKey, &uVal)))
312	return uVal;
313	return 0;
314	}
315
316	/**
317	* Sets a value to a key or deletes a key by setting a NULL value.
318	*
319	* @return IPRT status code.
320	* @param pszKey Key name to process.
321	* @param pszValue Value to set. Set NULL for deleting the key.
322	*/
323	int GuestProcessStreamBlock::SetValue(const char pszKey, const char pszValue)
324	{
325	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
326
327	int rc = VINF_SUCCESS;
328	try
329	{
330	Utf8Str Utf8Key(pszKey);
331
332	/* Take a shortcut and prevent crashes on some funny versions
333	* of STL if map is empty initially. */
334	if (!mPairs.empty())
335	{
336	GuestCtrlStreamPairMapIter it = mPairs.find(Utf8Key);
337	if (it != mPairs.end())
338	mPairs.erase(it);
339	}
340
341	if (pszValue)
342	{
343	GuestProcessStreamValue val(pszValue);
344	mPairs[Utf8Key] = val;
345	}
346	}
347	catch (const std::exception &ex)
348	{
349	NOREF(ex);
350	}
351	return rc;
352	}
353
354	///////////////////////////////////////////////////////////////////////////////
355
356	GuestProcessStream::GuestProcessStream(void)
357	: m_cbAllocated(0),
358	m_cbSize(0),
359	m_cbOffset(0),
360	m_pbBuffer(NULL)
361	{
362
363	}
364
365	GuestProcessStream::~GuestProcessStream(void)
366	{
367	Destroy();
368	}
369
370	/**
371	* Adds data to the internal parser buffer. Useful if there
372	* are multiple rounds of adding data needed.
373	*
374	* @return IPRT status code.
375	* @param pbData Pointer to data to add.
376	* @param cbData Size (in bytes) of data to add.
377	*/
378	int GuestProcessStream::AddData(const BYTE *pbData, size_t cbData)
379	{
380	AssertPtrReturn(pbData, VERR_INVALID_POINTER);
381	AssertReturn(cbData, VERR_INVALID_PARAMETER);
382
383	int rc = VINF_SUCCESS;
384
385	/* Rewind the buffer if it's empty. */
386	size_t cbInBuf = m_cbSize - m_cbOffset;
387	bool const fAddToSet = cbInBuf == 0;
388	if (fAddToSet)
389	m_cbSize = m_cbOffset = 0;
390
391	/* Try and see if we can simply append the data. */
392	if (cbData + m_cbSize <= m_cbAllocated)
393	{
394	memcpy(&m_pbBuffer[m_cbSize], pbData, cbData);
395	m_cbSize += cbData;
396	}
397	else
398	{
399	/* Move any buffered data to the front. */
400	cbInBuf = m_cbSize - m_cbOffset;
401	if (cbInBuf == 0)
402	m_cbSize = m_cbOffset = 0;
403	else if (m_cbOffset) /* Do we have something to move? */
404	{
405	memmove(m_pbBuffer, &m_pbBuffer[m_cbOffset], cbInBuf);
406	m_cbSize = cbInBuf;
407	m_cbOffset = 0;
408	}
409
410	/* Do we need to grow the buffer? */
411	if (cbData + m_cbSize > m_cbAllocated)
412	{
413	size_t cbAlloc = m_cbSize + cbData;
414	cbAlloc = RT_ALIGN_Z(cbAlloc, _64K);
415	void *pvNew = RTMemRealloc(m_pbBuffer, cbAlloc);
416	if (pvNew)
417	{
418	m_pbBuffer = (uint8_t *)pvNew;
419	m_cbAllocated = cbAlloc;
420	}
421	else
422	rc = VERR_NO_MEMORY;
423	}
424
425	/* Finally, copy the data. */
426	if (RT_SUCCESS(rc))
427	{
428	if (cbData + m_cbSize <= m_cbAllocated)
429	{
430	memcpy(&m_pbBuffer[m_cbSize], pbData, cbData);
431	m_cbSize += cbData;
432	}
433	else
434	rc = VERR_BUFFER_OVERFLOW;
435	}
436	}
437
438	return rc;
439	}
440
441	/**
442	* Destroys the internal data buffer.
443	*/
444	void GuestProcessStream::Destroy(void)
445	{
446	if (m_pbBuffer)
447	{
448	RTMemFree(m_pbBuffer);
449	m_pbBuffer = NULL;
450	}
451
452	m_cbAllocated = 0;
453	m_cbSize = 0;
454	m_cbOffset = 0;
455	}
456
457	#ifdef DEBUG
458	void GuestProcessStream::Dump(const char *pszFile)
459	{
460	LogFlowFunc(("Dumping contents of stream=0x%p (cbAlloc=%u, cbSize=%u, cbOff=%u) to %s\n",
461	m_pbBuffer, m_cbAllocated, m_cbSize, m_cbOffset, pszFile));
462
463	RTFILE hFile;
464	int rc = RTFileOpen(&hFile, pszFile, RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
465	if (RT_SUCCESS(rc))
466	{
467	rc = RTFileWrite(hFile, m_pbBuffer, m_cbSize, NULL /* pcbWritten */);
468	RTFileClose(hFile);
469	}
470	}
471	#endif
472
473	/**
474	* Tries to parse the next upcoming pair block within the internal
475	* buffer.
476	*
477	* Returns VERR_NO_DATA is no data is in internal buffer or buffer has been
478	* completely parsed already.
479	*
480	* Returns VERR_MORE_DATA if current block was parsed (with zero or more pairs
481	* stored in stream block) but still contains incomplete (unterminated)
482	* data.
483	*
484	* Returns VINF_SUCCESS if current block was parsed until the next upcoming
485	* block (with zero or more pairs stored in stream block).
486	*
487	* @return IPRT status code.
488	* @param streamBlock Reference to guest stream block to fill.
489	*
490	*/
491	int GuestProcessStream::ParseBlock(GuestProcessStreamBlock &streamBlock)
492	{
493	if ( !m_pbBuffer
494	\|\| !m_cbSize)
495	{
496	return VERR_NO_DATA;
497	}
498
499	AssertReturn(m_cbOffset <= m_cbSize, VERR_INVALID_PARAMETER);
500	if (m_cbOffset == m_cbSize)
501	return VERR_NO_DATA;
502
503	int rc = VINF_SUCCESS;
504
505	char pszOff = (char)&m_pbBuffer[m_cbOffset];
506	char *pszStart = pszOff;
507	uint32_t uDistance;
508	while (*pszStart)
509	{
510	size_t pairLen = strlen(pszStart);
511	uDistance = (pszStart - pszOff);
512	if (m_cbOffset + uDistance + pairLen + 1 >= m_cbSize)
513	{
514	rc = VERR_MORE_DATA;
515	break;
516	}
517	else
518	{
519	char *pszSep = strchr(pszStart, '=');
520	char *pszVal = NULL;
521	if (pszSep)
522	pszVal = pszSep + 1;
523	if (!pszSep \|\| !pszVal)
524	{
525	rc = VERR_MORE_DATA;
526	break;
527	}
528
529	/* Terminate the separator so that we can
530	* use pszStart as our key from now on. */
531	*pszSep = '\0';
532
533	rc = streamBlock.SetValue(pszStart, pszVal);
534	if (RT_FAILURE(rc))
535	return rc;
536	}
537
538	/* Next pair. */
539	pszStart += pairLen + 1;
540	}
541
542	/* If we did not do any movement but we have stuff left
543	* in our buffer just skip the current termination so that
544	* we can try next time. */
545	uDistance = (pszStart - pszOff);
546	if ( !uDistance
547	&& *pszStart == '\0'
548	&& m_cbOffset < m_cbSize)
549	{
550	uDistance++;
551	}
552	m_cbOffset += uDistance;
553
554	return rc;
555	}
556
557	GuestBase::GuestBase(void)
558	: mConsole(NULL),
559	mNextContextID(0)
560	{
561	}
562
563	GuestBase::~GuestBase(void)
564	{
565	}
566
567	int GuestBase::baseInit(void)
568	{
569	int rc = RTCritSectInit(&mWaitEventCritSect);
570
571	LogFlowFuncLeaveRC(rc);
572	return rc;
573	}
574
575	void GuestBase::baseUninit(void)
576	{
577	LogFlowThisFuncEnter();
578
579	int rc = RTCritSectDelete(&mWaitEventCritSect);
580
581	LogFlowFuncLeaveRC(rc);
582	/* No return value. */
583	}
584
585	int GuestBase::cancelWaitEvents(void)
586	{
587	LogFlowThisFuncEnter();
588
589	int rc = RTCritSectEnter(&mWaitEventCritSect);
590	if (RT_SUCCESS(rc))
591	{
592	GuestEventGroup::iterator itEventGroups = mWaitEventGroups.begin();
593	while (itEventGroups != mWaitEventGroups.end())
594	{
595	GuestWaitEvents::iterator itEvents = itEventGroups->second.begin();
596	while (itEvents != itEventGroups->second.end())
597	{
598	GuestWaitEvent *pEvent = itEvents->second;
599	AssertPtr(pEvent);
600
601	/*
602	* Just cancel the event, but don't remove it from the
603	* wait events map. Don't delete it though, this (hopefully)
604	* is done by the caller using unregisterWaitEvent().
605	*/
606	int rc2 = pEvent->Cancel();
607	AssertRC(rc2);
608
609	++itEvents;
610	}
611
612	++itEventGroups;
613	}
614
615	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
616	if (RT_SUCCESS(rc))
617	rc = rc2;
618	}
619
620	LogFlowFuncLeaveRC(rc);
621	return rc;
622	}
623
624	int GuestBase::dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
625	{
626	LogFlowFunc(("pCtxCb=%p, pSvcCb=%p\n", pCtxCb, pSvcCb));
627
628	AssertPtrReturn(pCtxCb, VERR_INVALID_POINTER);
629	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
630
631	int vrc = VINF_SUCCESS;
632
633	try
634	{
635	LogFlowFunc(("uFunc=%RU32, cParms=%RU32\n",
636	pCtxCb->uFunction, pSvcCb->mParms));
637
638	switch (pCtxCb->uFunction)
639	{
640	case GUEST_MSG_PROGRESS_UPDATE:
641	break;
642
643	case GUEST_MSG_REPLY:
644	{
645	if (pSvcCb->mParms >= 3)
646	{
647	int idx = 1; /* Current parameter index. */
648	CALLBACKDATA_MSG_REPLY dataCb;
649	/* pSvcCb->mpaParms[0] always contains the context ID. */
650	vrc = pSvcCb->mpaParms[idx++].getUInt32(&dataCb.uType);
651	AssertRCReturn(vrc, vrc);
652	vrc = pSvcCb->mpaParms[idx++].getUInt32(&dataCb.rc);
653	AssertRCReturn(vrc, vrc);
654	vrc = pSvcCb->mpaParms[idx++].getPointer(&dataCb.pvPayload, &dataCb.cbPayload);
655	AssertRCReturn(vrc, vrc);
656
657	GuestWaitEventPayload evPayload(dataCb.uType, dataCb.pvPayload, dataCb.cbPayload);
658	int rc2 = signalWaitEventInternal(pCtxCb, dataCb.rc, &evPayload);
659	AssertRC(rc2);
660	}
661	else
662	vrc = VERR_INVALID_PARAMETER;
663	break;
664	}
665
666	default:
667	vrc = VERR_NOT_SUPPORTED;
668	break;
669	}
670	}
671	catch (std::bad_alloc)
672	{
673	vrc = VERR_NO_MEMORY;
674	}
675	catch (int rc)
676	{
677	vrc = rc;
678	}
679
680	LogFlowFuncLeaveRC(vrc);
681	return vrc;
682	}
683
684	int GuestBase::generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID)
685	{
686	AssertPtrReturn(puContextID, VERR_INVALID_POINTER);
687
688	if ( uSessionID >= VBOX_GUESTCTRL_MAX_SESSIONS
689	\|\| uObjectID >= VBOX_GUESTCTRL_MAX_OBJECTS)
690	return VERR_INVALID_PARAMETER;
691
692	uint32_t uCount = ASMAtomicIncU32(&mNextContextID);
693	if (uCount == VBOX_GUESTCTRL_MAX_CONTEXTS)
694	uCount = 0;
695
696	uint32_t uNewContextID =
697	VBOX_GUESTCTRL_CONTEXTID_MAKE(uSessionID, uObjectID, uCount);
698
699	*puContextID = uNewContextID;
700
701	#if 0
702	LogFlowThisFunc(("mNextContextID=%RU32, uSessionID=%RU32, uObjectID=%RU32, uCount=%RU32, uNewContextID=%RU32\n",
703	mNextContextID, uSessionID, uObjectID, uCount, uNewContextID));
704	#endif
705	return VINF_SUCCESS;
706	}
707
708	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID,
709	GuestWaitEvent **ppEvent)
710	{
711	GuestEventTypes eventTypesEmpty;
712	return registerWaitEvent(uSessionID, uObjectID, eventTypesEmpty, ppEvent);
713	}
714
715	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID,
716	const GuestEventTypes &lstEvents,
717	GuestWaitEvent **ppEvent)
718	{
719	AssertPtrReturn(ppEvent, VERR_INVALID_POINTER);
720
721	uint32_t uContextID;
722	int rc = generateContextID(uSessionID, uObjectID, &uContextID);
723	if (RT_FAILURE(rc))
724	return rc;
725
726	rc = RTCritSectEnter(&mWaitEventCritSect);
727	if (RT_SUCCESS(rc))
728	{
729	try
730	{
731	GuestWaitEvent *pEvent = new GuestWaitEvent(uContextID, lstEvents);
732	AssertPtr(pEvent);
733
734	LogFlowThisFunc(("New event=%p, CID=%RU32\n", pEvent, uContextID));
735
736	/* Insert event into matching event group. This is for faster per-group
737	* lookup of all events later. */
738	for (GuestEventTypes::const_iterator itEvents = lstEvents.begin();
739	itEvents != lstEvents.end(); ++itEvents)
740	{
741	mWaitEventGroups[(*itEvents)].insert(
742	std::pair<uint32_t, GuestWaitEvent*>(uContextID, pEvent));
743	/** @todo Check for key collision. */
744	}
745
746	/* Register event in regular event list. */
747	/** @todo Check for key collisions. */
748	mWaitEvents[uContextID] = pEvent;
749
750	*ppEvent = pEvent;
751	}
752	catch(std::bad_alloc &)
753	{
754	rc = VERR_NO_MEMORY;
755	}
756
757	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
758	if (RT_SUCCESS(rc))
759	rc = rc2;
760	}
761
762	return rc;
763	}
764
765	int GuestBase::signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent)
766	{
767	int rc = RTCritSectEnter(&mWaitEventCritSect);
768	#ifdef DEBUG
769	uint32_t cEvents = 0;
770	#endif
771	if (RT_SUCCESS(rc))
772	{
773	GuestEventGroup::iterator itGroup = mWaitEventGroups.find(aType);
774	if (itGroup != mWaitEventGroups.end())
775	{
776	GuestWaitEvents::iterator itEvents = itGroup->second.begin();
777	while (itEvents != itGroup->second.end())
778	{
779	#ifdef DEBUG
780	LogFlowThisFunc(("Signalling event=%p, type=%ld (CID %RU32: Session=%RU32, Object=%RU32, Count=%RU32) ...\n",
781	itEvents->second, aType, itEvents->first,
782	VBOX_GUESTCTRL_CONTEXTID_GET_SESSION(itEvents->first),
783	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(itEvents->first),
784	VBOX_GUESTCTRL_CONTEXTID_GET_COUNT(itEvents->first)));
785	#endif
786	ComPtr<IEvent> pThisEvent = aEvent;
787	Assert(!pThisEvent.isNull());
788	int rc2 = itEvents->second->SignalExternal(aEvent);
789	if (RT_SUCCESS(rc))
790	rc = rc2;
791
792	if (RT_SUCCESS(rc2))
793	{
794	/* Remove the event from all other event groups (except the
795	* original one!) because it was signalled. */
796	AssertPtr(itEvents->second);
797	const GuestEventTypes evTypes = itEvents->second->Types();
798	for (GuestEventTypes::const_iterator itType = evTypes.begin();
799	itType != evTypes.end(); ++itType)
800	{
801	if ((itType) != aType) / Only remove all other groups. */
802	{
803	/* Get current event group. */
804	GuestEventGroup::iterator evGroup = mWaitEventGroups.find((*itType));
805	Assert(evGroup != mWaitEventGroups.end());
806
807	/* Lookup event in event group. */
808	GuestWaitEvents::iterator evEvent = evGroup->second.find(itEvents->first /* Context ID */);
809	Assert(evEvent != evGroup->second.end());
810
811	LogFlowThisFunc(("Removing event=%p (type %ld)\n", evEvent->second, (*itType)));
812	evGroup->second.erase(evEvent);
813
814	LogFlowThisFunc(("%zu events for type=%ld left\n",
815	evGroup->second.size(), aType));
816	}
817	}
818
819	/* Remove the event from the passed-in event group. */
820	itGroup->second.erase(itEvents++);
821	}
822	else
823	++itEvents;
824	#ifdef DEBUG
825	cEvents++;
826	#endif
827	}
828	}
829
830	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
831	if (RT_SUCCESS(rc))
832	rc = rc2;
833	}
834
835	#ifdef DEBUG
836	LogFlowThisFunc(("Signalled %RU32 events, rc=%Rrc\n", cEvents, rc));
837	#endif
838	return rc;
839	}
840
841	int GuestBase::signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx,
842	int guestRc, const GuestWaitEventPayload *pPayload)
843	{
844	if (RT_SUCCESS(guestRc))
845	return signalWaitEventInternalEx(pCbCtx, VINF_SUCCESS,
846	0 /* Guest rc */, pPayload);
847
848	return signalWaitEventInternalEx(pCbCtx, VERR_GSTCTL_GUEST_ERROR,
849	guestRc, pPayload);
850	}
851
852	int GuestBase::signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx,
853	int rc, int guestRc,
854	const GuestWaitEventPayload *pPayload)
855	{
856	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
857	/* pPayload is optional. */
858
859	int rc2;
860	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pCbCtx->uContextID);
861	if (itEvent != mWaitEvents.end())
862	{
863	LogFlowThisFunc(("Signalling event=%p (CID %RU32, rc=%Rrc, guestRc=%Rrc, pPayload=%p) ...\n",
864	itEvent->second, itEvent->first, rc, guestRc, pPayload));
865	GuestWaitEvent *pEvent = itEvent->second;
866	AssertPtr(pEvent);
867	rc2 = pEvent->SignalInternal(rc, guestRc, pPayload);
868	}
869	else
870	rc2 = VERR_NOT_FOUND;
871
872	return rc2;
873	}
874
875	void GuestBase::unregisterWaitEvent(GuestWaitEvent *pEvent)
876	{
877	if (!pEvent) /* Nothing to unregister. */
878	return;
879
880	int rc = RTCritSectEnter(&mWaitEventCritSect);
881	if (RT_SUCCESS(rc))
882	{
883	LogFlowThisFunc(("pEvent=%p\n", pEvent));
884
885	const GuestEventTypes lstTypes = pEvent->Types();
886	for (GuestEventTypes::const_iterator itEvents = lstTypes.begin();
887	itEvents != lstTypes.end(); ++itEvents)
888	{
889	/** @todo Slow O(n) lookup. Optimize this. */
890	GuestWaitEvents::iterator itCurEvent = mWaitEventGroups[(*itEvents)].begin();
891	while (itCurEvent != mWaitEventGroups[(*itEvents)].end())
892	{
893	if (itCurEvent->second == pEvent)
894	{
895	mWaitEventGroups[(*itEvents)].erase(itCurEvent++);
896	break;
897	}
898	else
899	++itCurEvent;
900	}
901	}
902
903	delete pEvent;
904	pEvent = NULL;
905
906	int rc2 = RTCritSectLeave(&mWaitEventCritSect);
907	if (RT_SUCCESS(rc))
908	rc = rc2;
909	}
910	}
911
912	/**
913	* Waits for a formerly registered guest event.
914	*
915	* @return IPRT status code.
916	* @param pEvent Pointer to event to wait for.
917	* @param uTimeoutMS Timeout (in ms) for waiting.
918	* @param pType Event type of following IEvent.
919	* Optional.
920	* @param ppEvent Pointer to IEvent which got triggered
921	* for this event. Optional.
922	*/
923	int GuestBase::waitForEvent(GuestWaitEvent *pEvent, uint32_t uTimeoutMS,
924	VBoxEventType_T pType, IEvent *ppEvent)
925	{
926	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
927	/* pType is optional. */
928	/* ppEvent is optional. */
929
930	int vrc = pEvent->Wait(uTimeoutMS);
931	if (RT_SUCCESS(vrc))
932	{
933	const ComPtr<IEvent> pThisEvent = pEvent->Event();
934	if (!pThisEvent.isNull()) /* Having a VBoxEventType_ event is optional. */
935	{
936	if (pType)
937	{
938	HRESULT hr = pThisEvent->COMGETTER(Type)(pType);
939	if (FAILED(hr))
940	vrc = VERR_COM_UNEXPECTED;
941	}
942	if ( RT_SUCCESS(vrc)
943	&& ppEvent)
944	pThisEvent.queryInterfaceTo(ppEvent);
945
946	unconst(pThisEvent).setNull();
947	}
948	}
949
950	return vrc;
951	}
952
953	GuestObject::GuestObject(void)
954	: mSession(NULL),
955	mObjectID(0)
956	{
957	}
958
959	GuestObject::~GuestObject(void)
960	{
961	}
962
963	int GuestObject::bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID)
964	{
965	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
966	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
967
968	mConsole = pConsole;
969	mSession = pSession;
970	mObjectID = uObjectID;
971
972	return VINF_SUCCESS;
973	}
974
975	int GuestObject::registerWaitEvent(const GuestEventTypes &lstEvents,
976	GuestWaitEvent **ppEvent)
977	{
978	AssertPtr(mSession);
979	return GuestBase::registerWaitEvent(mSession->i_getId(), mObjectID, lstEvents, ppEvent);
980	}
981
982	int GuestObject::sendCommand(uint32_t uFunction,
983	uint32_t uParms, PVBOXHGCMSVCPARM paParms)
984	{
985	#ifndef VBOX_GUESTCTRL_TEST_CASE
986	ComObjPtr<Console> pConsole = mConsole;
987	Assert(!pConsole.isNull());
988
989	int vrc = VERR_HGCM_SERVICE_NOT_FOUND;
990
991	/* Forward the information to the VMM device. */
992	VMMDev *pVMMDev = pConsole->i_getVMMDev();
993	if (pVMMDev)
994	{
995	LogFlowThisFunc(("uFunction=%RU32, uParms=%RU32\n", uFunction, uParms));
996	vrc = pVMMDev->hgcmHostCall(HGCMSERVICE_NAME, uFunction, uParms, paParms);
997	if (RT_FAILURE(vrc))
998	{
999	/** @todo What to do here? */
1000	}
1001	}
1002	#else
1003	LogFlowThisFuncEnter();
1004
1005	/* Not needed within testcases. */
1006	int vrc = VINF_SUCCESS;
1007	#endif
1008	return vrc;
1009	}
1010
1011	GuestWaitEventBase::GuestWaitEventBase(void)
1012	: mfAborted(false),
1013	mCID(0),
1014	mEventSem(NIL_RTSEMEVENT),
1015	mRc(VINF_SUCCESS),
1016	mGuestRc(VINF_SUCCESS)
1017	{
1018	}
1019
1020	GuestWaitEventBase::~GuestWaitEventBase(void)
1021	{
1022	if (mEventSem != NIL_RTSEMEVENT)
1023	{
1024	RTSemEventDestroy(mEventSem);
1025	mEventSem = NIL_RTSEMEVENT;
1026	}
1027	}
1028
1029	int GuestWaitEventBase::Init(uint32_t uCID)
1030	{
1031	mCID = uCID;
1032
1033	return RTSemEventCreate(&mEventSem);
1034	}
1035
1036	int GuestWaitEventBase::SignalInternal(int rc, int guestRc,
1037	const GuestWaitEventPayload *pPayload)
1038	{
1039	if (ASMAtomicReadBool(&mfAborted))
1040	return VERR_CANCELLED;
1041
1042	#ifdef VBOX_STRICT
1043	if (rc == VERR_GSTCTL_GUEST_ERROR)
1044	AssertMsg(RT_FAILURE(guestRc), ("Guest error indicated but no actual guest error set (%Rrc)\n", guestRc));
1045	else
1046	AssertMsg(RT_SUCCESS(guestRc), ("No guest error indicated but actual guest error set (%Rrc)\n", guestRc));
1047	#endif
1048
1049	int rc2;
1050	if (pPayload)
1051	rc2 = mPayload.CopyFromDeep(*pPayload);
1052	else
1053	rc2 = VINF_SUCCESS;
1054	if (RT_SUCCESS(rc2))
1055	{
1056	mRc = rc;
1057	mGuestRc = guestRc;
1058
1059	rc2 = RTSemEventSignal(mEventSem);
1060	}
1061
1062	return rc2;
1063	}
1064
1065	int GuestWaitEventBase::Wait(RTMSINTERVAL uTimeoutMS)
1066	{
1067	int rc = VINF_SUCCESS;
1068
1069	if (ASMAtomicReadBool(&mfAborted))
1070	rc = VERR_CANCELLED;
1071
1072	if (RT_SUCCESS(rc))
1073	{
1074	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1075
1076	RTMSINTERVAL msInterval = uTimeoutMS;
1077	if (!uTimeoutMS)
1078	msInterval = RT_INDEFINITE_WAIT;
1079	rc = RTSemEventWait(mEventSem, msInterval);
1080	if (ASMAtomicReadBool(&mfAborted))
1081	rc = VERR_CANCELLED;
1082	if (RT_SUCCESS(rc))
1083	{
1084	/* If waiting succeeded, return the overall
1085	* result code. */
1086	rc = mRc;
1087	}
1088	}
1089
1090	return rc;
1091	}
1092
1093	GuestWaitEvent::GuestWaitEvent(uint32_t uCID,
1094	const GuestEventTypes &lstEvents)
1095	{
1096	int rc2 = Init(uCID);
1097	AssertRC(rc2); /** @todo Throw exception here. */
1098
1099	mEventTypes = lstEvents;
1100	}
1101
1102	GuestWaitEvent::GuestWaitEvent(uint32_t uCID)
1103	{
1104	int rc2 = Init(uCID);
1105	AssertRC(rc2); /** @todo Throw exception here. */
1106	}
1107
1108	GuestWaitEvent::~GuestWaitEvent(void)
1109	{
1110
1111	}
1112
1113	/**
1114	* Cancels the event.
1115	*/
1116	int GuestWaitEvent::Cancel(void)
1117	{
1118	AssertReturn(!mfAborted, VERR_CANCELLED);
1119	ASMAtomicWriteBool(&mfAborted, true);
1120
1121	#ifdef DEBUG_andy
1122	LogFlowThisFunc(("Cancelling %p ...\n"));
1123	#endif
1124	return RTSemEventSignal(mEventSem);
1125	}
1126
1127	int GuestWaitEvent::Init(uint32_t uCID)
1128	{
1129	return GuestWaitEventBase::Init(uCID);
1130	}
1131
1132	/**
1133	* Signals the event.
1134	*
1135	* @return IPRT status code.
1136	* @param pEvent Public IEvent to associate.
1137	* Optional.
1138	*/
1139	int GuestWaitEvent::SignalExternal(IEvent *pEvent)
1140	{
1141	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1142
1143	if (pEvent)
1144	mEvent = pEvent;
1145
1146	return RTSemEventSignal(mEventSem);
1147	}
1148

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

source: vbox/trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp@ 56085

Download in other formats: