VBoxWatchdog.cpp@ 50117

Last change on this file since 50117 was 46649, checked in by vboxsync, 11 years ago
Forward ported r85941 and required build fixes (Main: Implemented new event queue to separate system's native event queue and our own. Also, XPCOM is not needed for handling our own events. On Windows this also fixes the system's queue quota limitation).
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File size: 35.6 KB

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1	/* $Id: VBoxWatchdog.cpp 46649 2013-06-19 11:47:32Z vboxsync $ */
2	/** @file
3	* VBoxWatchdog.cpp - VirtualBox Watchdog.
4	*/
5
6	/*
7	* Copyright (C) 2011-2013 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	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#ifndef VBOX_ONLY_DOCS
23	# include <VBox/com/com.h>
24	# include <VBox/com/string.h>
25	# include <VBox/com/Guid.h>
26	# include <VBox/com/array.h>
27	# include <VBox/com/ErrorInfo.h>
28	# include <VBox/com/errorprint.h>
29
30	# include <VBox/com/NativeEventQueue.h>
31	# include <VBox/com/listeners.h>
32	# include <VBox/com/VirtualBox.h>
33	#endif /* !VBOX_ONLY_DOCS */
34
35	#include <VBox/err.h>
36	#include <VBox/log.h>
37	#include <VBox/version.h>
38
39	#include <package-generated.h>
40
41	#include <iprt/asm.h>
42	#include <iprt/buildconfig.h>
43	#include <iprt/critsect.h>
44	#include <iprt/getopt.h>
45	#include <iprt/initterm.h>
46	#include <iprt/message.h>
47	#include <iprt/path.h>
48	#include <iprt/process.h>
49	#include <iprt/semaphore.h>
50	#include <iprt/stream.h>
51	#include <iprt/string.h>
52	#include <iprt/system.h>
53	#include <iprt/time.h>
54
55
56	#include <algorithm>
57	#include <string>
58	#include <signal.h>
59
60	#include "VBoxWatchdogInternal.h"
61
62	using namespace com;
63
64	/** External globals. */
65	bool g_fDryrun = false;
66	bool g_fVerbose = false;
67	ComPtr<IVirtualBox> g_pVirtualBox = NULL;
68	ComPtr<ISession> g_pSession = NULL;
69	mapVM g_mapVM;
70	mapGroup g_mapGroup;
71	# ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
72	ComPtr<IPerformanceCollector> g_pPerfCollector = NULL;
73	# endif
74
75	/** The critical section for the machines map. */
76	static RTCRITSECT g_csMachines;
77
78	/** Set by the signal handler. */
79	static volatile bool g_fCanceled = false;
80
81	/** Logging parameters. */
82	static uint32_t g_cHistory = 10; /* Enable log rotation, 10 files. */
83	static uint32_t g_uHistoryFileTime = RT_SEC_1DAY; /* Max 1 day per file. */
84	static uint64_t g_uHistoryFileSize = 100 * _1M; /* Max 100MB per file. */
85
86	/** Run in background. */
87	static bool g_fDaemonize = false;
88
89	/**
90	* The details of the services that has been compiled in.
91	*/
92	static struct
93	{
94	/** Pointer to the service descriptor. */
95	PCVBOXMODULE pDesc;
96	/** Whether Pre-init was called. */
97	bool fPreInited;
98	/** Whether the module is enabled or not. */
99	bool fEnabled;
100	} g_aModules[] =
101	{
102	{ &g_ModBallooning, false /* Pre-inited /, true / Enabled */ },
103	{ &g_ModAPIMonitor, false /* Pre-inited /, true / Enabled */ }
104	};
105
106	enum GETOPTDEF_WATCHDOG
107	{
108	GETOPTDEF_WATCHDOG_DRYRUN = 1000
109	};
110
111	/**
112	* Command line arguments.
113	*/
114	static const RTGETOPTDEF g_aOptions[] = {
115	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
116	{ "--background", 'b', RTGETOPT_REQ_NOTHING },
117	#endif
118	/** For displayHelp(). */
119	{ "--dryrun", GETOPTDEF_WATCHDOG_DRYRUN, RTGETOPT_REQ_NOTHING },
120	{ "--help", 'h', RTGETOPT_REQ_NOTHING },
121	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
122	{ "--pidfile", 'P', RTGETOPT_REQ_STRING },
123	{ "--logfile", 'F', RTGETOPT_REQ_STRING },
124	{ "--logrotate", 'R', RTGETOPT_REQ_UINT32 },
125	{ "--logsize", 'S', RTGETOPT_REQ_UINT64 },
126	{ "--loginterval", 'I', RTGETOPT_REQ_UINT32 }
127	};
128
129	/** Global static objects. */
130	static ComPtr<IVirtualBoxClient> g_pVirtualBoxClient = NULL;
131	static ComPtr<IEventSource> g_pEventSource = NULL;
132	static ComPtr<IEventSource> g_pEventSourceClient = NULL;
133	static ComPtr<IEventListener> g_pVBoxEventListener = NULL;
134	static NativeEventQueue *g_pEventQ = NULL;
135
136	/* Prototypes. */
137	static int machineAdd(const Bstr &strUuid);
138	static int machineRemove(const Bstr &strUuid);
139	static int watchdogSetup();
140	static void watchdogShutdown();
141
142	#ifdef RT_OS_WINDOWS
143	/* Required for ATL. */
144	static CComModule _Module;
145	#endif
146
147	/**
148	* Handler for global events.
149	*/
150	class VirtualBoxEventListener
151	{
152	public:
153	VirtualBoxEventListener()
154	{
155	}
156
157	virtual ~VirtualBoxEventListener()
158	{
159	}
160
161	HRESULT init()
162	{
163	return S_OK;
164	}
165
166	void uninit()
167	{
168	}
169
170	STDMETHOD(HandleEvent)(VBoxEventType_T aType, IEvent *aEvent)
171	{
172	switch (aType)
173	{
174	case VBoxEventType_OnMachineRegistered:
175	{
176	ComPtr<IMachineRegisteredEvent> pEvent = aEvent;
177	Assert(pEvent);
178
179	Bstr uuid;
180	BOOL fRegistered;
181	HRESULT hr = pEvent->COMGETTER(Registered)(&fRegistered);
182	if (SUCCEEDED(hr))
183	hr = pEvent->COMGETTER(MachineId)(uuid.asOutParam());
184
185	if (SUCCEEDED(hr))
186	{
187	int rc = RTCritSectEnter(&g_csMachines);
188	if (RT_SUCCESS(rc))
189	{
190	rc = fRegistered
191	? machineAdd(uuid)
192	: machineRemove(uuid);
193	int rc2 = RTCritSectLeave(&g_csMachines);
194	if (RT_SUCCESS(rc))
195	rc = rc2;
196	AssertRC(rc);
197	}
198	}
199	break;
200	}
201
202	case VBoxEventType_OnMachineStateChanged:
203	{
204	ComPtr<IMachineStateChangedEvent> pEvent = aEvent;
205	Assert(pEvent);
206
207	MachineState_T machineState;
208	Bstr uuid;
209
210	HRESULT hr = pEvent->COMGETTER(State)(&machineState);
211	if (SUCCEEDED(hr))
212	hr = pEvent->COMGETTER(MachineId)(uuid.asOutParam());
213
214	if (SUCCEEDED(hr))
215	{
216	int rc = RTCritSectEnter(&g_csMachines);
217	if (RT_SUCCESS(rc))
218	{
219	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
220	if (g_aModules[j].fEnabled)
221	{
222	int rc2 = g_aModules[j].pDesc->pfnOnMachineStateChanged(uuid,
223	machineState);
224	if (RT_FAILURE(rc2))
225	serviceLog("Module '%s' reported an error: %Rrc\n",
226	g_aModules[j].pDesc->pszName, rc);
227	/* Keep going. */
228	}
229
230	int rc2 = RTCritSectLeave(&g_csMachines);
231	if (RT_SUCCESS(rc))
232	rc = rc2;
233	AssertRC(rc);
234	}
235	}
236	break;
237	}
238
239	case VBoxEventType_OnVBoxSVCAvailabilityChanged:
240	{
241	ComPtr<IVBoxSVCAvailabilityChangedEvent> pVSACEv = aEvent;
242	Assert(pVSACEv);
243	BOOL fAvailable = FALSE;
244	pVSACEv->COMGETTER(Available)(&fAvailable);
245
246	/* First, notify all modules. */
247	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
248	if (g_aModules[j].fEnabled)
249	{
250	int rc2 = g_aModules[j].pDesc->pfnOnServiceStateChanged(RT_BOOL(fAvailable));
251	if (RT_FAILURE(rc2))
252	serviceLog("Module '%s' reported an error: %Rrc\n",
253	g_aModules[j].pDesc->pszName, rc2);
254	/* Keep going. */
255	}
256
257	/* Do global teardown/re-creation stuff. */
258	if (!fAvailable)
259	{
260	serviceLog("VBoxSVC became unavailable\n");
261	watchdogShutdown();
262	}
263	else
264	{
265	serviceLog("VBoxSVC became available\n");
266	int rc2 = watchdogSetup();
267	if (RT_FAILURE(rc2))
268	serviceLog("Unable to re-set up watchdog (rc=%Rrc)!\n", rc2);
269	}
270
271	break;
272	}
273
274	default:
275	/* Not handled event, just skip it. */
276	break;
277	}
278
279	return S_OK;
280	}
281
282	private:
283	};
284	typedef ListenerImpl<VirtualBoxEventListener> VirtualBoxEventListenerImpl;
285	VBOX_LISTENER_DECLARE(VirtualBoxEventListenerImpl)
286
287	/**
288	* Signal handler that sets g_fGuestCtrlCanceled.
289	*
290	* This can be executed on any thread in the process, on Windows it may even be
291	* a thread dedicated to delivering this signal. Do not doing anything
292	* unnecessary here.
293	*/
294	static void signalHandler(int iSignal)
295	{
296	NOREF(iSignal);
297	ASMAtomicWriteBool(&g_fCanceled, true);
298
299	if (g_pEventQ)
300	{
301	int rc = g_pEventQ->interruptEventQueueProcessing();
302	if (RT_FAILURE(rc))
303	serviceLog("Error: interruptEventQueueProcessing failed with rc=%Rrc\n", rc);
304	}
305	}
306
307	/**
308	* Installs a custom signal handler to get notified
309	* whenever the user wants to intercept the program.
310	*/
311	static void signalHandlerInstall()
312	{
313	signal(SIGINT, signalHandler);
314	#ifdef SIGBREAK
315	signal(SIGBREAK, signalHandler);
316	#endif
317	}
318
319	/**
320	* Uninstalls a previously installed signal handler.
321	*/
322	static void signalHandlerUninstall()
323	{
324	signal(SIGINT, SIG_DFL);
325	#ifdef SIGBREAK
326	signal(SIGBREAK, SIG_DFL);
327	#endif
328	}
329
330	/**
331	* Adds a specified machine to the list (map) of handled machines.
332	* Does not do locking -- needs to be done by caller!
333	*
334	* @return IPRT status code.
335	* @param strUuid UUID of the specified machine.
336	*/
337	static int machineAdd(const Bstr &strUuid)
338	{
339	HRESULT rc;
340
341	/** @todo Add exception handling! */
342
343	do
344	{
345	ComPtr <IMachine> machine;
346	CHECK_ERROR_BREAK(g_pVirtualBox, FindMachine(strUuid.raw(), machine.asOutParam()));
347	Assert(!machine.isNull());
348
349	/*
350	* Get groups for this machine.
351	*/
352	com::SafeArray<BSTR> groups;
353	CHECK_ERROR_BREAK(machine, COMGETTER(Groups)(ComSafeArrayAsOutParam(groups)));
354	Utf8Str strGroups;
355	for (size_t i = 0; i < groups.size(); i++)
356	{
357	if (i != 0)
358	strGroups.append(",");
359	strGroups.append(Utf8Str(groups[i]));
360	}
361
362	/*
363	* Add machine to map.
364	*/
365	VBOXWATCHDOG_MACHINE m;
366	m.machine = machine;
367	int rc2 = groupAdd(m.groups, strGroups.c_str(), 0 /* Flags */);
368	AssertRC(rc2);
369
370	mapVMIter it = g_mapVM.find(strUuid);
371	Assert(it == g_mapVM.end());
372	g_mapVM.insert(std::make_pair(strUuid, m));
373	serviceLogVerbose(("Added machine \"%ls\"\n", strUuid.raw()));
374
375	/*
376	* Get the machine's VM group(s).
377	*/
378	mapGroupsIterConst itGroup = m.groups.begin();
379	while (itGroup != m.groups.end())
380	{
381	serviceLogVerbose(("Machine \"%ls\" is in VM group \"%s\"\n",
382	strUuid.raw(), itGroup->first.c_str()));
383
384	/* Add machine to group(s). */
385	mapGroupIter itGroups = g_mapGroup.find(itGroup->first);
386	if (itGroups == g_mapGroup.end())
387	{
388	vecGroupMembers vecMembers;
389	vecMembers.push_back(strUuid);
390	g_mapGroup.insert(std::make_pair(itGroup->first, vecMembers));
391
392	itGroups = g_mapGroup.find(itGroup->first);
393	Assert(itGroups != g_mapGroup.end());
394	}
395	else
396	itGroups->second.push_back(strUuid);
397	serviceLogVerbose(("Group \"%s\" has now %ld machine(s)\n",
398	itGroup->first.c_str(), itGroups->second.size()));
399	itGroup++;
400	}
401
402	/*
403	* Let all modules know. Typically all modules would register
404	* their per-machine payload here.
405	*/
406	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
407	if (g_aModules[j].fEnabled)
408	{
409	rc2 = g_aModules[j].pDesc->pfnOnMachineRegistered(strUuid);
410	if (RT_FAILURE(rc2))
411	serviceLog("OnMachineRegistered: Module '%s' reported an error: %Rrc\n",
412	g_aModules[j].pDesc->pszName, rc);
413	/* Keep going. */
414	}
415
416	} while (0);
417
418	/** @todo Add std exception handling! */
419
420	return SUCCEEDED(rc) ? VINF_SUCCESS : VERR_COM_IPRT_ERROR; /* @todo Find a better error! */
421	}
422
423	static int machineDestroy(const Bstr &strUuid)
424	{
425	AssertReturn(!strUuid.isEmpty(), VERR_INVALID_PARAMETER);
426	int rc = VINF_SUCCESS;
427
428	/* Let all modules know. */
429	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
430	if (g_aModules[j].fEnabled)
431	{
432	int rc2 = g_aModules[j].pDesc->pfnOnMachineUnregistered(strUuid);
433	if (RT_FAILURE(rc2))
434	serviceLog("OnMachineUnregistered: Module '%s' reported an error: %Rrc\n",
435	g_aModules[j].pDesc->pszName, rc);
436	/* Keep going. */
437	}
438
439	/* Must log before erasing the iterator because of the UUID ref! */
440	serviceLogVerbose(("Removing machine \"%ls\"\n", strUuid.raw()));
441
442	try
443	{
444	mapVMIter itVM = g_mapVM.find(strUuid);
445	Assert(itVM != g_mapVM.end());
446
447	/* Remove machine from group(s). */
448	mapGroupsIterConst itGroups = itVM->second.groups.begin();
449	while (itGroups != itVM->second.groups.end())
450	{
451	mapGroupIter itGroup = g_mapGroup.find(itGroups->first);
452	Assert(itGroup != g_mapGroup.end());
453
454	vecGroupMembers vecMembers = itGroup->second;
455	vecGroupMembersIter itMember = std::find(vecMembers.begin(),
456	vecMembers.end(),
457	strUuid);
458	Assert(itMember != vecMembers.end());
459	vecMembers.erase(itMember);
460
461	serviceLogVerbose(("Group \"%s\" has %ld machines left\n",
462	itGroup->first.c_str(), vecMembers.size()));
463	if (!vecMembers.size())
464	{
465	serviceLogVerbose(("Deleting group \"%s\"\n", itGroup->first.c_str()));
466	g_mapGroup.erase(itGroup);
467	}
468
469	itGroups++;
470	}
471
472	#ifndef VBOX_WATCHDOG_GLOBAL_PERFCOL
473	itVM->second.collector.setNull();
474	#endif
475	itVM->second.machine.setNull();
476
477	/*
478	* Remove machine from map.
479	*/
480	g_mapVM.erase(itVM);
481	}
482	catch (...)
483	{
484	AssertFailed();
485	}
486
487	return rc;
488	}
489
490	/**
491	* Removes a specified machine from the list of handled machines.
492	* Does not do locking -- needs to be done by caller!
493	*
494	* @return IPRT status code.
495	* @param strUuid UUID of the specified machine.
496	*/
497	static int machineRemove(const Bstr &strUuid)
498	{
499	AssertReturn(!strUuid.isEmpty(), VERR_INVALID_PARAMETER);
500	int rc = VINF_SUCCESS;
501
502	mapVMIter it = g_mapVM.find(strUuid);
503	if (it != g_mapVM.end())
504	{
505	int rc2 = machineDestroy(strUuid);
506	if (RT_FAILURE(rc))
507	{
508	serviceLog(("Machine \"%ls\" failed to destroy, rc=%Rc\n"));
509	if (RT_SUCCESS(rc))
510	rc = rc2;
511	}
512	}
513	else
514	{
515	serviceLogVerbose(("Warning: Removing not added machine \"%ls\"\n", strUuid.raw()));
516	rc = VERR_NOT_FOUND;
517	}
518
519	return rc;
520	}
521
522	static void vmListDestroy()
523	{
524	serviceLogVerbose(("Destroying VM list ...\n"));
525
526	int rc = RTCritSectEnter(&g_csMachines);
527	if (RT_SUCCESS(rc))
528	{
529	mapVMIter it = g_mapVM.begin();
530	while (it != g_mapVM.end())
531	{
532	machineDestroy(it->first);
533	it = g_mapVM.begin();
534	}
535
536	g_mapVM.clear();
537
538	rc = RTCritSectLeave(&g_csMachines);
539	}
540	AssertRC(rc);
541	}
542
543	static int vmListBuild()
544	{
545	serviceLogVerbose(("Building VM list ...\n"));
546
547	int rc = RTCritSectEnter(&g_csMachines);
548	if (RT_SUCCESS(rc))
549	{
550	/*
551	* Make sure the list is empty.
552	*/
553	g_mapVM.clear();
554
555	/*
556	* Get the list of all _running_ VMs
557	*/
558	com::SafeIfaceArray<IMachine> machines;
559	HRESULT hrc = g_pVirtualBox->COMGETTER(Machines)(ComSafeArrayAsOutParam(machines));
560	if (SUCCEEDED(hrc))
561	{
562	/*
563	* Iterate through the collection
564	*/
565	for (size_t i = 0; i < machines.size(); ++i)
566	{
567	if (machines[i])
568	{
569	Bstr strUUID;
570	CHECK_ERROR_BREAK(machines[i], COMGETTER(Id)(strUUID.asOutParam()));
571
572	BOOL fAccessible;
573	CHECK_ERROR_BREAK(machines[i], COMGETTER(Accessible)(&fAccessible));
574	if (!fAccessible)
575	{
576	serviceLogVerbose(("Machine \"%ls\" is inaccessible, skipping\n",
577	strUUID.raw()));
578	continue;
579	}
580
581	rc = machineAdd(strUUID);
582	if (RT_FAILURE(rc))
583	break;
584	}
585	}
586
587	if (!machines.size())
588	serviceLogVerbose(("No machines to add found at the moment!\n"));
589	}
590
591	int rc2 = RTCritSectLeave(&g_csMachines);
592	if (RT_SUCCESS(rc))
593	rc = rc2;
594	}
595	return rc;
596	}
597
598	/**
599	* Lazily calls the pfnPreInit method on each service.
600	*
601	* @returns VBox status code, error message displayed.
602	*/
603	static int watchdogLazyPreInit(void)
604	{
605	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
606	if (!g_aModules[j].fPreInited)
607	{
608	int rc = g_aModules[j].pDesc->pfnPreInit();
609	if (RT_FAILURE(rc))
610	{
611	serviceLog("Module '%s' failed pre-init: %Rrc\n",
612	g_aModules[j].pDesc->pszName, rc);
613	return rc;
614	}
615	g_aModules[j].fPreInited = true;
616	}
617	return VINF_SUCCESS;
618	}
619
620	/**
621	* Starts all registered modules.
622	*
623	* @return IPRT status code.
624	* @return int
625	*/
626	static int watchdogStartModules()
627	{
628	int rc = VINF_SUCCESS;
629
630	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
631	if (g_aModules[j].fEnabled)
632	{
633	rc = g_aModules[j].pDesc->pfnInit();
634	if (RT_FAILURE(rc))
635	{
636	if (rc != VERR_SERVICE_DISABLED)
637	{
638	serviceLog("Module '%s' failed to initialize: %Rrc\n",
639	g_aModules[j].pDesc->pszName, rc);
640	return rc;
641	}
642	g_aModules[j].fEnabled = false;
643	serviceLog(0, "Module '%s' was disabled because of missing functionality\n",
644	g_aModules[j].pDesc->pszName);
645
646	}
647	}
648
649	return rc;
650	}
651
652	static int watchdogShutdownModules()
653	{
654	int rc = VINF_SUCCESS;
655
656	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
657	if (g_aModules[j].fEnabled)
658	{
659	int rc2 = g_aModules[j].pDesc->pfnStop();
660	if (RT_FAILURE(rc2))
661	{
662	serviceLog("Module '%s' failed to stop: %Rrc\n",
663	g_aModules[j].pDesc->pszName, rc);
664	/* Keep original rc. */
665	if (RT_SUCCESS(rc))
666	rc = rc2;
667	}
668	/* Keep going. */
669	}
670
671	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
672	if (g_aModules[j].fEnabled)
673	{
674	g_aModules[j].pDesc->pfnTerm();
675	}
676
677	return rc;
678	}
679
680	static RTEXITCODE watchdogMain(HandlerArg *a)
681	{
682	HRESULT rc = S_OK;
683
684	do
685	{
686	/* Initialize global weak references. */
687	g_pEventQ = com::NativeEventQueue::getMainEventQueue();
688
689	/*
690	* Install signal handlers.
691	*/
692	signal(SIGINT, signalHandler);
693	#ifdef SIGBREAK
694	signal(SIGBREAK, signalHandler);
695	#endif
696
697	/*
698	* Setup the global event listeners:
699	* - g_pEventSource for machine events
700	* - g_pEventSourceClient for VBoxClient events (like VBoxSVC handling)
701	*/
702	CHECK_ERROR_BREAK(g_pVirtualBox, COMGETTER(EventSource)(g_pEventSource.asOutParam()));
703	CHECK_ERROR_BREAK(g_pVirtualBoxClient, COMGETTER(EventSource)(g_pEventSourceClient.asOutParam()));
704
705	ComObjPtr<VirtualBoxEventListenerImpl> vboxListenerImpl;
706	vboxListenerImpl.createObject();
707	vboxListenerImpl->init(new VirtualBoxEventListener());
708
709	com::SafeArray<VBoxEventType_T> eventTypes;
710	eventTypes.push_back(VBoxEventType_OnMachineRegistered);
711	eventTypes.push_back(VBoxEventType_OnMachineStateChanged);
712	eventTypes.push_back(VBoxEventType_OnVBoxSVCAvailabilityChanged); /* Processed by g_pEventSourceClient. */
713
714	g_pVBoxEventListener = vboxListenerImpl;
715	CHECK_ERROR_BREAK(g_pEventSource, RegisterListener(g_pVBoxEventListener, ComSafeArrayAsInParam(eventTypes), true /* Active listener */));
716	CHECK_ERROR_BREAK(g_pEventSourceClient, RegisterListener(g_pVBoxEventListener, ComSafeArrayAsInParam(eventTypes), true /* Active listener */));
717
718	/*
719	* Set up modules.
720	*/
721	int vrc = watchdogStartModules();
722	if (RT_FAILURE(vrc))
723	break;
724
725	for (;;)
726	{
727	/*
728	* Do the actual work.
729	*/
730
731	vrc = RTCritSectEnter(&g_csMachines);
732	if (RT_SUCCESS(vrc))
733	{
734	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
735	if (g_aModules[j].fEnabled)
736	{
737	int rc2 = g_aModules[j].pDesc->pfnMain();
738	if (RT_FAILURE(rc2))
739	serviceLog("Module '%s' reported an error: %Rrc\n",
740	g_aModules[j].pDesc->pszName, rc2);
741	/* Keep going. */
742	}
743
744	int rc2 = RTCritSectLeave(&g_csMachines);
745	if (RT_SUCCESS(vrc))
746	vrc = rc2;
747	AssertRC(vrc);
748	}
749
750	/*
751	* Process pending events, then wait for new ones. Note, this
752	* processes NULL events signalling event loop termination.
753	*/
754	g_pEventQ->processEventQueue(50);
755
756	if (g_fCanceled)
757	{
758	serviceLog("Signal caught, exiting ...\n");
759	break;
760	}
761	}
762
763	signal(SIGINT, SIG_DFL);
764	#ifdef SIGBREAK
765	signal(SIGBREAK, SIG_DFL);
766	#endif
767
768	/* VirtualBox callback unregistration. */
769	if (g_pVBoxEventListener)
770	{
771	if (!g_pEventSource.isNull())
772	CHECK_ERROR(g_pEventSource, UnregisterListener(g_pVBoxEventListener));
773	g_pVBoxEventListener.setNull();
774	}
775
776	g_pEventSource.setNull();
777	g_pEventSourceClient.setNull();
778
779	vrc = watchdogShutdownModules();
780	AssertRC(vrc);
781
782	if (RT_FAILURE(vrc))
783	rc = VBOX_E_IPRT_ERROR;
784
785	} while (0);
786
787	return SUCCEEDED(rc) ? RTEXITCODE_SUCCESS : RTEXITCODE_FAILURE;
788	}
789
790	void serviceLog(const char *pszFormat, ...)
791	{
792	va_list args;
793	va_start(args, pszFormat);
794	char *psz = NULL;
795	RTStrAPrintfV(&psz, pszFormat, args);
796	va_end(args);
797
798	LogRel(("%s", psz));
799
800	RTStrFree(psz);
801	}
802
803	static void displayHeader()
804	{
805	RTStrmPrintf(g_pStdErr, VBOX_PRODUCT " Watchdog " VBOX_VERSION_STRING "\n"
806	"(C) " VBOX_C_YEAR " " VBOX_VENDOR "\n"
807	"All rights reserved.\n\n");
808	}
809
810	/**
811	* Displays the help.
812	*
813	* @param pszImage Name of program name (image).
814	*/
815	static void displayHelp(const char *pszImage)
816	{
817	AssertPtrReturnVoid(pszImage);
818
819	displayHeader();
820
821	RTStrmPrintf(g_pStdErr,
822	"Usage:\n"
823	" %s [-v\|--verbose] [-h\|-?\|--help] [-P\|--pidfile]\n"
824	" [-F\|--logfile=<file>] [-R\|--logrotate=<num>] [-S\|--logsize=<bytes>]\n"
825	" [-I\|--loginterval=<seconds>]\n", pszImage);
826	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
827	if (g_aModules[j].pDesc->pszUsage)
828	RTStrmPrintf(g_pStdErr, "%s", g_aModules[j].pDesc->pszUsage);
829
830	RTStrmPrintf(g_pStdErr, "\n"
831	"Options:\n");
832
833	for (unsigned i = 0;
834	i < RT_ELEMENTS(g_aOptions);
835	++i)
836	{
837	std::string str(g_aOptions[i].pszLong);
838	if (g_aOptions[i].iShort < 1000) /* Don't show short options which are defined by an ID! */
839	{
840	str += ", -";
841	str += g_aOptions[i].iShort;
842	}
843	str += ":";
844
845	const char *pcszDescr = "";
846
847	switch (g_aOptions[i].iShort)
848	{
849	case GETOPTDEF_WATCHDOG_DRYRUN:
850	pcszDescr = "Dryrun mode -- do not perform any actions.";
851	break;
852
853	case 'h':
854	pcszDescr = "Print this help message and exit.";
855	break;
856
857	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
858	case 'b':
859	pcszDescr = "Run in background (daemon mode).";
860	break;
861	#endif
862	case 'P':
863	pcszDescr = "Name of the PID file which is created when the daemon was started.";
864	break;
865
866	case 'F':
867	pcszDescr = "Name of file to write log to (no file).";
868	break;
869
870	case 'R':
871	pcszDescr = "Number of log files (0 disables log rotation).";
872	break;
873
874	case 'S':
875	pcszDescr = "Maximum size of a log file to trigger rotation (bytes).";
876	break;
877
878	case 'I':
879	pcszDescr = "Maximum time interval to trigger log rotation (seconds).";
880	break;
881	}
882
883	RTStrmPrintf(g_pStdErr, "%-23s%s\n", str.c_str(), pcszDescr);
884	}
885
886	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
887	{
888	if (g_aModules[j].pDesc->pszOptions)
889	RTPrintf("%s", g_aModules[j].pDesc->pszOptions);
890	}
891
892	/** @todo Change VBOXBALLOONCTRL_RELEASE_LOG to WATCHDOG. /
893	RTStrmPrintf(g_pStdErr, "\nUse environment variable VBOXBALLOONCTRL_RELEASE_LOG for logging options.\n");
894	}
895
896	/**
897	* Creates all global COM objects.
898	*
899	* @return HRESULT
900	*/
901	static int watchdogSetup()
902	{
903	serviceLogVerbose(("Setting up ...\n"));
904
905	/*
906	* Setup VirtualBox + session interfaces.
907	*/
908	HRESULT rc = g_pVirtualBoxClient->COMGETTER(VirtualBox)(g_pVirtualBox.asOutParam());
909	if (SUCCEEDED(rc))
910	{
911	rc = g_pSession.createInprocObject(CLSID_Session);
912	if (FAILED(rc))
913	RTMsgError("Failed to create a session object (rc=%Rhrc)!", rc);
914	}
915	else
916	RTMsgError("Failed to get VirtualBox object (rc=%Rhrc)!", rc);
917
918	if (FAILED(rc))
919	return VERR_COM_OBJECT_NOT_FOUND;
920
921	/*
922	* Setup metrics.
923	*/
924	#ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
925	CHECK_ERROR_RET(g_pVirtualBox,
926	COMGETTER(PerformanceCollector)(g_pPerfCollector.asOutParam()), VERR_COM_UNEXPECTED);
927	#endif
928
929	int vrc = RTCritSectInit(&g_csMachines);
930	if (RT_SUCCESS(vrc))
931	{
932
933	/*
934	* Build up initial VM list.
935	*/
936	vrc = vmListBuild();
937	}
938
939	return vrc;
940	}
941
942	static void watchdogShutdown()
943	{
944	serviceLogVerbose(("Shutting down ...\n"));
945
946	vmListDestroy();
947
948	int rc = RTCritSectDelete(&g_csMachines);
949	AssertRC(rc);
950
951	#ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
952	g_pPerfCollector.setNull();
953	#endif
954
955	g_pSession.setNull();
956	g_pVirtualBox.setNull();
957	}
958
959	int main(int argc, char *argv[])
960	{
961	/*
962	* Before we do anything, init the runtime without loading
963	* the support driver.
964	*/
965	int rc = RTR3InitExe(argc, &argv, 0);
966	if (RT_FAILURE(rc))
967	return RTMsgInitFailure(rc);
968
969	/*
970	* Parse the global options
971	*/
972	int c;
973	const char *pszLogFile = NULL;
974	const char *pszPidFile = NULL;
975	RTGETOPTUNION ValueUnion;
976	RTGETOPTSTATE GetState;
977	RTGetOptInit(&GetState, argc, argv,
978	g_aOptions, RT_ELEMENTS(g_aOptions), 1 /* First /, 0 /fFlags*/);
979	while ((c = RTGetOpt(&GetState, &ValueUnion)))
980	{
981	switch (c)
982	{
983	case GETOPTDEF_WATCHDOG_DRYRUN:
984	g_fDryrun = true;
985	break;
986
987	case 'h':
988	displayHelp(argv[0]);
989	return 0;
990
991	case 'v':
992	g_fVerbose = true;
993	break;
994
995	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
996	case 'b':
997	g_fDaemonize = true;
998	break;
999	#endif
1000	case 'V':
1001	RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr());
1002	return 0;
1003
1004	case 'P':
1005	pszPidFile = ValueUnion.psz;
1006	break;
1007
1008	case 'F':
1009	pszLogFile = ValueUnion.psz;
1010	break;
1011
1012	case 'R':
1013	g_cHistory = ValueUnion.u32;
1014	break;
1015
1016	case 'S':
1017	g_uHistoryFileSize = ValueUnion.u64;
1018	break;
1019
1020	case 'I':
1021	g_uHistoryFileTime = ValueUnion.u32;
1022	break;
1023
1024	default:
1025	{
1026	bool fFound = false;
1027
1028	/** @todo Add "--disable-<module>" etc. here! */
1029
1030	if (!fFound)
1031	{
1032	rc = watchdogLazyPreInit();
1033	if (RT_FAILURE(rc))
1034	return RTEXITCODE_FAILURE;
1035
1036	for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aModules); j++)
1037	{
1038	int iArgCnt = argc - GetState.iNext + 1;
1039	int iArgIndex = GetState.iNext - 1;
1040	int iConsumed = 0;
1041	rc = g_aModules[j].pDesc->pfnOption(iArgCnt,
1042	&argv[iArgIndex],
1043	&iConsumed);
1044	fFound = rc == 0;
1045	if (fFound)
1046	{
1047	GetState.iNext += iConsumed;
1048	break;
1049	}
1050	if (rc != -1)
1051	return rc;
1052	}
1053	}
1054	if (!fFound)
1055	return RTGetOptPrintError(c, &ValueUnion);
1056	continue;
1057	}
1058	}
1059	}
1060
1061	/** @todo Add "--quiet/-q" option to not show the header. */
1062	displayHeader();
1063
1064	/* create release logger, to stdout */
1065	char szError[RTPATH_MAX + 128];
1066	rc = com::VBoxLogRelCreate("Watchdog", g_fDaemonize ? NULL : pszLogFile,
1067	RTLOGFLAGS_PREFIX_THREAD \| RTLOGFLAGS_PREFIX_TIME_PROG,
1068	"all", "VBOXBALLOONCTRL_RELEASE_LOG",
1069	RTLOGDEST_STDOUT, UINT32_MAX /* cMaxEntriesPerGroup */,
1070	g_cHistory, g_uHistoryFileTime, g_uHistoryFileSize,
1071	szError, sizeof(szError));
1072	if (RT_FAILURE(rc))
1073	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", szError, rc);
1074
1075	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
1076	if (g_fDaemonize)
1077	{
1078	/* prepare release logging */
1079	char szLogFile[RTPATH_MAX];
1080
1081	if (!pszLogFile \|\| !*pszLogFile)
1082	{
1083	rc = com::GetVBoxUserHomeDirectory(szLogFile, sizeof(szLogFile));
1084	if (RT_FAILURE(rc))
1085	return RTMsgErrorExit(RTEXITCODE_FAILURE, "could not get base directory for logging: %Rrc", rc);
1086	rc = RTPathAppend(szLogFile, sizeof(szLogFile), "vboxballoonctrl.log");
1087	if (RT_FAILURE(rc))
1088	return RTMsgErrorExit(RTEXITCODE_FAILURE, "could not construct logging path: %Rrc", rc);
1089	pszLogFile = szLogFile;
1090	}
1091
1092	rc = RTProcDaemonizeUsingFork(false /* fNoChDir /, false / fNoClose */, pszPidFile);
1093	if (RT_FAILURE(rc))
1094	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to daemonize, rc=%Rrc. exiting.", rc);
1095	/* create release logger, to file */
1096	rc = com::VBoxLogRelCreate("Watchdog", pszLogFile,
1097	RTLOGFLAGS_PREFIX_THREAD \| RTLOGFLAGS_PREFIX_TIME_PROG,
1098	"all", "VBOXBALLOONCTRL_RELEASE_LOG",
1099	RTLOGDEST_FILE, UINT32_MAX /* cMaxEntriesPerGroup */,
1100	g_cHistory, g_uHistoryFileTime, g_uHistoryFileSize,
1101	szError, sizeof(szError));
1102	if (RT_FAILURE(rc))
1103	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", szError, rc);
1104	}
1105	#endif
1106
1107	#ifndef VBOX_ONLY_DOCS
1108	/*
1109	* Initialize COM.
1110	*/
1111	using namespace com;
1112	HRESULT hrc = com::Initialize();
1113	# ifdef VBOX_WITH_XPCOM
1114	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
1115	{
1116	char szHome[RTPATH_MAX] = "";
1117	com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome));
1118	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1119	"Failed to initialize COM because the global settings directory '%s' is not accessible!", szHome);
1120	}
1121	# endif
1122	if (FAILED(hrc))
1123	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM (%Rhrc)!", hrc);
1124
1125	hrc = g_pVirtualBoxClient.createInprocObject(CLSID_VirtualBoxClient);
1126	if (FAILED(hrc))
1127	{
1128	RTMsgError("Failed to create the VirtualBoxClient object (%Rhrc)!", hrc);
1129	com::ErrorInfo info;
1130	if (!info.isFullAvailable() && !info.isBasicAvailable())
1131	{
1132	com::GluePrintRCMessage(hrc);
1133	RTMsgError("Most likely, the VirtualBox COM server is not running or failed to start.");
1134	}
1135	else
1136	com::GluePrintErrorInfo(info);
1137	return RTEXITCODE_FAILURE;
1138	}
1139
1140	if (g_fDryrun)
1141	serviceLog("Running in dryrun mode\n");
1142
1143	rc = watchdogSetup();
1144	if (RT_FAILURE(rc))
1145	return RTEXITCODE_FAILURE;
1146
1147	HandlerArg handlerArg = { argc, argv };
1148	RTEXITCODE rcExit = watchdogMain(&handlerArg);
1149
1150	NativeEventQueue::getMainEventQueue()->processEventQueue(0);
1151
1152	watchdogShutdown();
1153
1154	g_pVirtualBoxClient.setNull();
1155
1156	com::Shutdown();
1157
1158	return rcExit;
1159	#else /* VBOX_ONLY_DOCS */
1160	return RTEXITCODE_SUCCESS;
1161	#endif /* VBOX_ONLY_DOCS */
1162	}
1163

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source: vbox/trunk/src/VBox/Frontends/VBoxBalloonCtrl/VBoxWatchdog.cpp@ 50117

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