VBoxWatchdog.cpp@ 82968

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1	/* $Id: VBoxWatchdog.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* VBoxWatchdog.cpp - VirtualBox Watchdog.
4	*/
5
6	/*
7	* Copyright (C) 2011-2020 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	typedef struct VBOXWATCHDOGMOD
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	} VBOXWATCHDOGMOD, *PVBOXWATCHDOGMOD;
101
102	static VBOXWATCHDOGMOD g_aModules[] =
103	{
104	{ &g_ModBallooning, false /* Pre-inited /, true / Enabled */ },
105	{ &g_ModAPIMonitor, false /* Pre-inited /, true / Enabled */ }
106	};
107
108	enum GETOPTDEF_WATCHDOG
109	{
110	GETOPTDEF_WATCHDOG_DISABLE_MODULE = 1000,
111	GETOPTDEF_WATCHDOG_DRYRUN
112	};
113
114	/**
115	* Command line arguments.
116	*/
117	static const RTGETOPTDEF g_aOptions[] = {
118	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
119	{ "--background", 'b', RTGETOPT_REQ_NOTHING },
120	#endif
121	/** For displayHelp(). */
122	{ "--disable-<module>", GETOPTDEF_WATCHDOG_DISABLE_MODULE, RTGETOPT_REQ_NOTHING },
123	{ "--dryrun", GETOPTDEF_WATCHDOG_DRYRUN, RTGETOPT_REQ_NOTHING },
124	{ "--help", 'h', RTGETOPT_REQ_NOTHING },
125	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
126	{ "--pidfile", 'P', RTGETOPT_REQ_STRING },
127	{ "--logfile", 'F', RTGETOPT_REQ_STRING },
128	{ "--logrotate", 'R', RTGETOPT_REQ_UINT32 },
129	{ "--logsize", 'S', RTGETOPT_REQ_UINT64 },
130	{ "--loginterval", 'I', RTGETOPT_REQ_UINT32 }
131	};
132
133	/** Global static objects. */
134	static ComPtr<IVirtualBoxClient> g_pVirtualBoxClient = NULL;
135	static ComPtr<IEventSource> g_pEventSource = NULL;
136	static ComPtr<IEventSource> g_pEventSourceClient = NULL;
137	static ComPtr<IEventListener> g_pVBoxEventListener = NULL;
138	static NativeEventQueue *g_pEventQ = NULL;
139
140	/* Prototypes. */
141	static int machineAdd(const Bstr &strUuid);
142	static int machineRemove(const Bstr &strUuid);
143	static int watchdogSetup();
144	static void watchdogShutdown();
145
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	#if 0 /** @todo signal handler installer / uninstallers are unused. */
308	/**
309	* Installs a custom signal handler to get notified
310	* whenever the user wants to intercept the program.
311	*/
312	static void signalHandlerInstall()
313	{
314	signal(SIGINT, signalHandler);
315	#ifdef SIGBREAK
316	signal(SIGBREAK, signalHandler);
317	#endif
318	}
319
320	/**
321	* Uninstalls a previously installed signal handler.
322	*/
323	static void signalHandlerUninstall()
324	{
325	signal(SIGINT, SIG_DFL);
326	#ifdef SIGBREAK
327	signal(SIGBREAK, SIG_DFL);
328	#endif
329	}
330	#endif /* unused */
331
332	/**
333	* Adds a specified machine to the list (map) of handled machines.
334	* Does not do locking -- needs to be done by caller!
335	*
336	* @return IPRT status code.
337	* @param strUuid UUID of the specified machine.
338	*/
339	static int machineAdd(const Bstr &strUuid)
340	{
341	HRESULT rc;
342
343	/** @todo Add exception handling! */
344
345	do
346	{
347	ComPtr <IMachine> machine;
348	CHECK_ERROR_BREAK(g_pVirtualBox, FindMachine(strUuid.raw(), machine.asOutParam()));
349	Assert(!machine.isNull());
350
351	/*
352	* Get groups for this machine.
353	*/
354	com::SafeArray<BSTR> groups;
355	CHECK_ERROR_BREAK(machine, COMGETTER(Groups)(ComSafeArrayAsOutParam(groups)));
356	Utf8Str strGroups;
357	for (size_t i = 0; i < groups.size(); i++)
358	{
359	if (i != 0)
360	strGroups.append(",");
361	strGroups.append(Utf8Str(groups[i]));
362	}
363
364	/*
365	* Add machine to map.
366	*/
367	VBOXWATCHDOG_MACHINE m;
368	m.machine = machine;
369	CHECK_ERROR_BREAK(machine, COMGETTER(Name)(m.strName.asOutParam()));
370
371	int rc2 = groupAdd(m.groups, strGroups.c_str(), 0 /* Flags */);
372	AssertRC(rc2);
373
374	Assert(g_mapVM.find(strUuid) == g_mapVM.end());
375	g_mapVM.insert(std::make_pair(strUuid, m));
376	serviceLogVerbose(("Added machine \"%ls\"\n", strUuid.raw()));
377
378	/*
379	* Get the machine's VM group(s).
380	*/
381	mapGroupsIterConst itGroup = m.groups.begin();
382	while (itGroup != m.groups.end())
383	{
384	serviceLogVerbose(("Machine \"%ls\" is in VM group \"%s\"\n",
385	strUuid.raw(), itGroup->first.c_str()));
386
387	/* Add machine to group(s). */
388	mapGroupIter itGroups = g_mapGroup.find(itGroup->first);
389	if (itGroups == g_mapGroup.end())
390	{
391	vecGroupMembers vecMembers;
392	vecMembers.push_back(strUuid);
393	g_mapGroup.insert(std::make_pair(itGroup->first, vecMembers));
394
395	itGroups = g_mapGroup.find(itGroup->first);
396	Assert(itGroups != g_mapGroup.end());
397	}
398	else
399	itGroups->second.push_back(strUuid);
400	serviceLogVerbose(("Group \"%s\" has now %ld machine(s)\n",
401	itGroup->first.c_str(), itGroups->second.size()));
402	++itGroup;
403	}
404
405	/*
406	* Let all modules know. Typically all modules would register
407	* their per-machine payload here.
408	*/
409	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
410	if (g_aModules[j].fEnabled)
411	{
412	rc2 = g_aModules[j].pDesc->pfnOnMachineRegistered(strUuid);
413	if (RT_FAILURE(rc2))
414	serviceLog("OnMachineRegistered: Module '%s' reported an error: %Rrc\n",
415	g_aModules[j].pDesc->pszName, rc);
416	/* Keep going. */
417	}
418
419	} while (0);
420
421	/** @todo Add std exception handling! */
422
423	return SUCCEEDED(rc) ? VINF_SUCCESS : VERR_COM_IPRT_ERROR; /** @todo Find a better error! */
424	}
425
426	static int machineDestroy(const Bstr &strUuid)
427	{
428	AssertReturn(!strUuid.isEmpty(), VERR_INVALID_PARAMETER);
429	int rc = VINF_SUCCESS;
430
431	/* Let all modules know. */
432	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
433	if (g_aModules[j].fEnabled)
434	{
435	int rc2 = g_aModules[j].pDesc->pfnOnMachineUnregistered(strUuid);
436	if (RT_FAILURE(rc2))
437	serviceLog("OnMachineUnregistered: Module '%s' reported an error: %Rrc\n",
438	g_aModules[j].pDesc->pszName, rc);
439	/* Keep going. */
440	}
441
442	/* Must log before erasing the iterator because of the UUID ref! */
443	serviceLogVerbose(("Removing machine \"%ls\"\n", strUuid.raw()));
444
445	try
446	{
447	mapVMIter itVM = g_mapVM.find(strUuid);
448	Assert(itVM != g_mapVM.end());
449
450	/* Remove machine from group(s). */
451	mapGroupsIterConst itGroups = itVM->second.groups.begin();
452	while (itGroups != itVM->second.groups.end())
453	{
454	mapGroupIter itGroup = g_mapGroup.find(itGroups->first);
455	Assert(itGroup != g_mapGroup.end());
456
457	vecGroupMembers vecMembers = itGroup->second;
458	vecGroupMembersIter itMember = std::find(vecMembers.begin(),
459	vecMembers.end(),
460	strUuid);
461	Assert(itMember != vecMembers.end());
462	vecMembers.erase(itMember);
463
464	serviceLogVerbose(("Group \"%s\" has %ld machines left\n",
465	itGroup->first.c_str(), vecMembers.size()));
466	if (!vecMembers.size())
467	{
468	serviceLogVerbose(("Deleting group \"%s\"\n", itGroup->first.c_str()));
469	g_mapGroup.erase(itGroup);
470	}
471
472	++itGroups;
473	}
474
475	#ifndef VBOX_WATCHDOG_GLOBAL_PERFCOL
476	itVM->second.collector.setNull();
477	#endif
478	itVM->second.machine.setNull();
479
480	/*
481	* Remove machine from map.
482	*/
483	g_mapVM.erase(itVM);
484	}
485	catch (...)
486	{
487	AssertFailed();
488	}
489
490	return rc;
491	}
492
493	/**
494	* Removes a specified machine from the list of handled machines.
495	* Does not do locking -- needs to be done by caller!
496	*
497	* @return IPRT status code.
498	* @param strUuid UUID of the specified machine.
499	*/
500	static int machineRemove(const Bstr &strUuid)
501	{
502	AssertReturn(!strUuid.isEmpty(), VERR_INVALID_PARAMETER);
503	int rc = VINF_SUCCESS;
504
505	mapVMIter it = g_mapVM.find(strUuid);
506	if (it != g_mapVM.end())
507	{
508	int rc2 = machineDestroy(strUuid);
509	if (RT_FAILURE(rc))
510	{
511	serviceLog(("Machine \"%ls\" failed to destroy, rc=%Rc\n"));
512	if (RT_SUCCESS(rc))
513	rc = rc2;
514	}
515	}
516	else
517	{
518	serviceLogVerbose(("Warning: Removing not added machine \"%ls\"\n", strUuid.raw()));
519	rc = VERR_NOT_FOUND;
520	}
521
522	return rc;
523	}
524
525	static void vmListDestroy()
526	{
527	serviceLogVerbose(("Destroying VM list ...\n"));
528
529	int rc = RTCritSectEnter(&g_csMachines);
530	if (RT_SUCCESS(rc))
531	{
532	mapVMIter it = g_mapVM.begin();
533	while (it != g_mapVM.end())
534	{
535	machineDestroy(it->first);
536	it = g_mapVM.begin();
537	}
538
539	g_mapVM.clear();
540
541	rc = RTCritSectLeave(&g_csMachines);
542	}
543	AssertRC(rc);
544	}
545
546	static int vmListBuild()
547	{
548	serviceLogVerbose(("Building VM list ...\n"));
549
550	int rc = RTCritSectEnter(&g_csMachines);
551	if (RT_SUCCESS(rc))
552	{
553	/*
554	* Make sure the list is empty.
555	*/
556	g_mapVM.clear();
557
558	/*
559	* Get the list of all _running_ VMs
560	*/
561	com::SafeIfaceArray<IMachine> machines;
562	HRESULT hrc = g_pVirtualBox->COMGETTER(Machines)(ComSafeArrayAsOutParam(machines));
563	if (SUCCEEDED(hrc))
564	{
565	/*
566	* Iterate through the collection
567	*/
568	for (size_t i = 0; i < machines.size(); ++i)
569	{
570	if (machines[i])
571	{
572	Bstr strUUID;
573	CHECK_ERROR_BREAK(machines[i], COMGETTER(Id)(strUUID.asOutParam()));
574
575	BOOL fAccessible;
576	CHECK_ERROR_BREAK(machines[i], COMGETTER(Accessible)(&fAccessible));
577	if (!fAccessible)
578	{
579	serviceLogVerbose(("Machine \"%ls\" is inaccessible, skipping\n",
580	strUUID.raw()));
581	continue;
582	}
583
584	rc = machineAdd(strUUID);
585	if (RT_FAILURE(rc))
586	break;
587	}
588	}
589
590	if (!machines.size())
591	serviceLogVerbose(("No machines to add found at the moment!\n"));
592	}
593
594	int rc2 = RTCritSectLeave(&g_csMachines);
595	if (RT_SUCCESS(rc))
596	rc = rc2;
597	}
598	return rc;
599	}
600
601	/**
602	* Lazily calls the pfnPreInit method on each service.
603	*
604	* @returns VBox status code, error message displayed.
605	*/
606	static int watchdogLazyPreInit(void)
607	{
608	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
609	if (!g_aModules[j].fPreInited)
610	{
611	int rc = g_aModules[j].pDesc->pfnPreInit();
612	if (RT_FAILURE(rc))
613	{
614	serviceLog("Module '%s' failed pre-init: %Rrc\n",
615	g_aModules[j].pDesc->pszName, rc);
616	return rc;
617	}
618	g_aModules[j].fPreInited = true;
619	}
620	return VINF_SUCCESS;
621	}
622
623	/**
624	* Starts all registered modules.
625	*
626	* @return IPRT status code.
627	* @return int
628	*/
629	static int watchdogStartModules()
630	{
631	int rc = VINF_SUCCESS;
632
633	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
634	{
635	const PVBOXWATCHDOGMOD pMod = &g_aModules[j];
636	if (pMod->fEnabled)
637	{
638	int rc2 = pMod->pDesc->pfnInit();
639	if (RT_FAILURE(rc2))
640	{
641	if (rc2 != VERR_SERVICE_DISABLED)
642	{
643	serviceLog("Module '%s' failed to initialize: %Rrc\n", pMod->pDesc->pszName, rc2);
644	return rc;
645	}
646	pMod->fEnabled = false;
647	serviceLog("Module '%s' was disabled because of missing functionality\n", pMod->pDesc->pszName);
648
649	}
650	}
651	else
652	serviceLog("Module '%s' disabled, skipping ...\n", pMod->pDesc->pszName);
653	}
654
655	return rc;
656	}
657
658	static int watchdogShutdownModules()
659	{
660	int rc = VINF_SUCCESS;
661
662	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
663	if (g_aModules[j].fEnabled)
664	{
665	int rc2 = g_aModules[j].pDesc->pfnStop();
666	if (RT_FAILURE(rc2))
667	{
668	serviceLog("Module '%s' failed to stop: %Rrc\n",
669	g_aModules[j].pDesc->pszName, rc);
670	/* Keep original rc. */
671	if (RT_SUCCESS(rc))
672	rc = rc2;
673	}
674	/* Keep going. */
675	}
676
677	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
678	if (g_aModules[j].fEnabled)
679	{
680	g_aModules[j].pDesc->pfnTerm();
681	}
682
683	return rc;
684	}
685
686	static RTEXITCODE watchdogMain(/HandlerArg a */)
687	{
688	HRESULT rc = S_OK;
689
690	do
691	{
692	/* Initialize global weak references. */
693	g_pEventQ = com::NativeEventQueue::getMainEventQueue();
694
695	/*
696	* Install signal handlers.
697	*/
698	signal(SIGINT, signalHandler);
699	#ifdef SIGBREAK
700	signal(SIGBREAK, signalHandler);
701	#endif
702
703	/*
704	* Setup the global event listeners:
705	* - g_pEventSource for machine events
706	* - g_pEventSourceClient for VBoxClient events (like VBoxSVC handling)
707	*/
708	CHECK_ERROR_BREAK(g_pVirtualBox, COMGETTER(EventSource)(g_pEventSource.asOutParam()));
709	CHECK_ERROR_BREAK(g_pVirtualBoxClient, COMGETTER(EventSource)(g_pEventSourceClient.asOutParam()));
710
711	ComObjPtr<VirtualBoxEventListenerImpl> vboxListenerImpl;
712	vboxListenerImpl.createObject();
713	vboxListenerImpl->init(new VirtualBoxEventListener());
714
715	com::SafeArray<VBoxEventType_T> eventTypes;
716	eventTypes.push_back(VBoxEventType_OnMachineRegistered);
717	eventTypes.push_back(VBoxEventType_OnMachineStateChanged);
718	eventTypes.push_back(VBoxEventType_OnVBoxSVCAvailabilityChanged); /* Processed by g_pEventSourceClient. */
719
720	g_pVBoxEventListener = vboxListenerImpl;
721	CHECK_ERROR_BREAK(g_pEventSource, RegisterListener(g_pVBoxEventListener, ComSafeArrayAsInParam(eventTypes), true /* Active listener */));
722	CHECK_ERROR_BREAK(g_pEventSourceClient, RegisterListener(g_pVBoxEventListener, ComSafeArrayAsInParam(eventTypes), true /* Active listener */));
723
724	/*
725	* Set up modules.
726	*/
727	int vrc = watchdogStartModules();
728	if (RT_FAILURE(vrc))
729	break;
730
731	for (;;)
732	{
733	/*
734	* Do the actual work.
735	*/
736
737	vrc = RTCritSectEnter(&g_csMachines);
738	if (RT_SUCCESS(vrc))
739	{
740	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
741	if (g_aModules[j].fEnabled)
742	{
743	int rc2 = g_aModules[j].pDesc->pfnMain();
744	if (RT_FAILURE(rc2))
745	serviceLog("Module '%s' reported an error: %Rrc\n",
746	g_aModules[j].pDesc->pszName, rc2);
747	/* Keep going. */
748	}
749
750	int rc2 = RTCritSectLeave(&g_csMachines);
751	if (RT_SUCCESS(vrc))
752	vrc = rc2;
753	AssertRC(vrc);
754	}
755
756	/*
757	* Process pending events, then wait for new ones. Note, this
758	* processes NULL events signalling event loop termination.
759	*/
760	g_pEventQ->processEventQueue(50);
761
762	if (g_fCanceled)
763	{
764	serviceLog("Signal caught, exiting ...\n");
765	break;
766	}
767	}
768
769	signal(SIGINT, SIG_DFL);
770	#ifdef SIGBREAK
771	signal(SIGBREAK, SIG_DFL);
772	#endif
773
774	/* VirtualBox callback unregistration. */
775	if (g_pVBoxEventListener)
776	{
777	if (!g_pEventSource.isNull())
778	CHECK_ERROR(g_pEventSource, UnregisterListener(g_pVBoxEventListener));
779	g_pVBoxEventListener.setNull();
780	}
781
782	g_pEventSource.setNull();
783	g_pEventSourceClient.setNull();
784
785	vrc = watchdogShutdownModules();
786	AssertRC(vrc);
787
788	if (RT_FAILURE(vrc))
789	rc = VBOX_E_IPRT_ERROR;
790
791	} while (0);
792
793	return SUCCEEDED(rc) ? RTEXITCODE_SUCCESS : RTEXITCODE_FAILURE;
794	}
795
796	void serviceLog(const char *pszFormat, ...)
797	{
798	va_list args;
799	va_start(args, pszFormat);
800	char *psz = NULL;
801	RTStrAPrintfV(&psz, pszFormat, args);
802	va_end(args);
803
804	LogRel(("%s", psz));
805
806	RTStrFree(psz);
807	}
808
809	static void displayHeader()
810	{
811	RTStrmPrintf(g_pStdErr, VBOX_PRODUCT " Watchdog " VBOX_VERSION_STRING "\n"
812	"(C) " VBOX_C_YEAR " " VBOX_VENDOR "\n"
813	"All rights reserved.\n\n");
814	}
815
816	/**
817	* Displays the help.
818	*
819	* @param pszImage Name of program name (image).
820	*/
821	static void displayHelp(const char *pszImage)
822	{
823	AssertPtrReturnVoid(pszImage);
824
825	displayHeader();
826
827	RTStrmPrintf(g_pStdErr,
828	"Usage:\n"
829	" %s [-v\|--verbose] [-h\|-?\|--help] [-P\|--pidfile]\n"
830	" [-F\|--logfile=<file>] [-R\|--logrotate=<num>] [-S\|--logsize=<bytes>]\n"
831	" [-I\|--loginterval=<seconds>]\n", pszImage);
832	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
833	if (g_aModules[j].pDesc->pszUsage)
834	RTStrmPrintf(g_pStdErr, "%s", g_aModules[j].pDesc->pszUsage);
835
836	RTStrmPrintf(g_pStdErr, "\n"
837	"Options:\n");
838
839	for (unsigned i = 0;
840	i < RT_ELEMENTS(g_aOptions);
841	++i)
842	{
843	std::string str(g_aOptions[i].pszLong);
844	if (g_aOptions[i].iShort < 1000) /* Don't show short options which are defined by an ID! */
845	{
846	str += ", -";
847	str += g_aOptions[i].iShort;
848	}
849	str += ":";
850
851	const char *pcszDescr = "";
852
853	switch (g_aOptions[i].iShort)
854	{
855	case GETOPTDEF_WATCHDOG_DISABLE_MODULE:
856	pcszDescr = "Disables a module. See module list for built-in modules.";
857	break;
858
859	case GETOPTDEF_WATCHDOG_DRYRUN:
860	pcszDescr = "Dryrun mode -- do not perform any actions.";
861	break;
862
863	case 'h':
864	pcszDescr = "Print this help message and exit.";
865	break;
866
867	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
868	case 'b':
869	pcszDescr = "Run in background (daemon mode).";
870	break;
871	#endif
872	case 'P':
873	pcszDescr = "Name of the PID file which is created when the daemon was started.";
874	break;
875
876	case 'F':
877	pcszDescr = "Name of file to write log to (no file).";
878	break;
879
880	case 'R':
881	pcszDescr = "Number of log files (0 disables log rotation).";
882	break;
883
884	case 'S':
885	pcszDescr = "Maximum size of a log file to trigger rotation (bytes).";
886	break;
887
888	case 'I':
889	pcszDescr = "Maximum time interval to trigger log rotation (seconds).";
890	break;
891	}
892
893	RTStrmPrintf(g_pStdErr, "%-23s%s\n", str.c_str(), pcszDescr);
894	}
895
896	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
897	{
898	if (g_aModules[j].pDesc->pszOptions)
899	RTStrmPrintf(g_pStdErr, "%s", g_aModules[j].pDesc->pszOptions);
900	}
901
902	/** @todo Change VBOXBALLOONCTRL_RELEASE_LOG to WATCHDOG. /
903	RTStrmPrintf(g_pStdErr, "\nUse environment variable VBOXBALLOONCTRL_RELEASE_LOG for logging options.\n");
904
905	RTStrmPrintf(g_pStdErr, "\nValid module names are: ");
906	for (unsigned j = 0; j < RT_ELEMENTS(g_aModules); j++)
907	{
908	if (j > 0)
909	RTStrmPrintf(g_pStdErr, ", ");
910	RTStrmPrintf(g_pStdErr, "%s", g_aModules[j].pDesc->pszName);
911	}
912	RTStrmPrintf(g_pStdErr, "\n\n");
913	}
914
915	/**
916	* Creates all global COM objects.
917	*
918	* @return HRESULT
919	*/
920	static int watchdogSetup()
921	{
922	serviceLogVerbose(("Setting up ...\n"));
923
924	/*
925	* Setup VirtualBox + session interfaces.
926	*/
927	HRESULT rc = g_pVirtualBoxClient->COMGETTER(VirtualBox)(g_pVirtualBox.asOutParam());
928	if (SUCCEEDED(rc))
929	{
930	rc = g_pSession.createInprocObject(CLSID_Session);
931	if (FAILED(rc))
932	RTMsgError("Failed to create a session object (rc=%Rhrc)!", rc);
933	}
934	else
935	RTMsgError("Failed to get VirtualBox object (rc=%Rhrc)!", rc);
936
937	if (FAILED(rc))
938	return VERR_COM_OBJECT_NOT_FOUND;
939
940	/*
941	* Setup metrics.
942	*/
943	#ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
944	CHECK_ERROR_RET(g_pVirtualBox,
945	COMGETTER(PerformanceCollector)(g_pPerfCollector.asOutParam()), VERR_COM_UNEXPECTED);
946	#endif
947
948	int vrc = RTCritSectInit(&g_csMachines);
949	if (RT_SUCCESS(vrc))
950	{
951
952	/*
953	* Build up initial VM list.
954	*/
955	vrc = vmListBuild();
956	}
957
958	return vrc;
959	}
960
961	static void watchdogShutdown()
962	{
963	serviceLogVerbose(("Shutting down ...\n"));
964
965	vmListDestroy();
966
967	int rc = RTCritSectDelete(&g_csMachines);
968	AssertRC(rc);
969
970	#ifdef VBOX_WATCHDOG_GLOBAL_PERFCOL
971	g_pPerfCollector.setNull();
972	#endif
973
974	g_pSession.setNull();
975	g_pVirtualBox.setNull();
976	}
977
978	int main(int argc, char *argv[])
979	{
980	/*
981	* Before we do anything, init the runtime without loading
982	* the support driver.
983	*/
984	int rc = RTR3InitExe(argc, &argv, 0);
985	if (RT_FAILURE(rc))
986	return RTMsgInitFailure(rc);
987	#ifdef RT_OS_WINDOWS
988	ATL::CComModule _Module; /* Required internally by ATL (constructor records instance in global variable). */
989	#endif
990
991	/*
992	* Parse the global options
993	*/
994	int c;
995	const char *pszLogFile = NULL;
996	const char *pszPidFile = NULL;
997	RTGETOPTUNION ValueUnion;
998	RTGETOPTSTATE GetState;
999	RTGetOptInit(&GetState, argc, argv,
1000	g_aOptions, RT_ELEMENTS(g_aOptions), 1 /* First /, 0 /fFlags*/);
1001	while ((c = RTGetOpt(&GetState, &ValueUnion)))
1002	{
1003	switch (c)
1004	{
1005	case GETOPTDEF_WATCHDOG_DRYRUN:
1006	g_fDryrun = true;
1007	break;
1008
1009	case 'h':
1010	displayHelp(argv[0]);
1011	return 0;
1012
1013	case 'v':
1014	g_fVerbose = true;
1015	break;
1016
1017	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
1018	case 'b':
1019	g_fDaemonize = true;
1020	break;
1021	#endif
1022	case 'V':
1023	RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr());
1024	return 0;
1025
1026	case 'P':
1027	pszPidFile = ValueUnion.psz;
1028	break;
1029
1030	case 'F':
1031	pszLogFile = ValueUnion.psz;
1032	break;
1033
1034	case 'R':
1035	g_cHistory = ValueUnion.u32;
1036	break;
1037
1038	case 'S':
1039	g_uHistoryFileSize = ValueUnion.u64;
1040	break;
1041
1042	case 'I':
1043	g_uHistoryFileTime = ValueUnion.u32;
1044	break;
1045
1046	default:
1047	{
1048	bool fFound = false;
1049
1050	char szModDisable[64];
1051	for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aModules); j++)
1052	{
1053	if (!RTStrPrintf(szModDisable, sizeof(szModDisable), "--disable-%s", g_aModules[j].pDesc->pszName))
1054	continue;
1055
1056	if (!RTStrICmp(szModDisable, ValueUnion.psz))
1057	{
1058	g_aModules[j].fEnabled = false;
1059	fFound = true;
1060	}
1061	}
1062
1063	if (!fFound)
1064	{
1065	rc = watchdogLazyPreInit();
1066	if (RT_FAILURE(rc))
1067	return RTEXITCODE_FAILURE;
1068
1069	for (unsigned j = 0; !fFound && j < RT_ELEMENTS(g_aModules); j++)
1070	{
1071	if (!g_aModules[j].fEnabled)
1072	continue;
1073
1074	int iArgCnt = argc - GetState.iNext + 1;
1075	int iArgIndex = GetState.iNext - 1;
1076	int iConsumed = 0;
1077	rc = g_aModules[j].pDesc->pfnOption(iArgCnt,
1078	&argv[iArgIndex],
1079	&iConsumed);
1080	fFound = rc == 0;
1081	if (fFound)
1082	{
1083	GetState.iNext += iConsumed;
1084	break;
1085	}
1086	if (rc != -1)
1087	return rc;
1088	}
1089	}
1090	if (!fFound)
1091	return RTGetOptPrintError(c, &ValueUnion);
1092	continue;
1093	}
1094	}
1095	}
1096
1097	/** @todo Add "--quiet/-q" option to not show the header. */
1098	displayHeader();
1099
1100	/* create release logger, to stdout */
1101	RTERRINFOSTATIC ErrInfo;
1102	rc = com::VBoxLogRelCreate("Watchdog", g_fDaemonize ? NULL : pszLogFile,
1103	RTLOGFLAGS_PREFIX_THREAD \| RTLOGFLAGS_PREFIX_TIME_PROG,
1104	"all", "VBOXBALLOONCTRL_RELEASE_LOG",
1105	RTLOGDEST_STDOUT, UINT32_MAX /* cMaxEntriesPerGroup */,
1106	g_cHistory, g_uHistoryFileTime, g_uHistoryFileSize,
1107	RTErrInfoInitStatic(&ErrInfo));
1108	if (RT_FAILURE(rc))
1109	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", ErrInfo.Core.pszMsg, rc);
1110
1111	#if defined(RT_OS_DARWIN) \|\| defined(RT_OS_LINUX) \|\| defined (RT_OS_SOLARIS) \|\| defined(RT_OS_FREEBSD)
1112	if (g_fDaemonize)
1113	{
1114	/* prepare release logging */
1115	char szLogFile[RTPATH_MAX];
1116
1117	if (!pszLogFile \|\| !*pszLogFile)
1118	{
1119	rc = com::GetVBoxUserHomeDirectory(szLogFile, sizeof(szLogFile));
1120	if (RT_FAILURE(rc))
1121	return RTMsgErrorExit(RTEXITCODE_FAILURE, "could not get base directory for logging: %Rrc", rc);
1122	rc = RTPathAppend(szLogFile, sizeof(szLogFile), "vboxballoonctrl.log");
1123	if (RT_FAILURE(rc))
1124	return RTMsgErrorExit(RTEXITCODE_FAILURE, "could not construct logging path: %Rrc", rc);
1125	pszLogFile = szLogFile;
1126	}
1127
1128	rc = RTProcDaemonizeUsingFork(false /* fNoChDir /, false / fNoClose */, pszPidFile);
1129	if (RT_FAILURE(rc))
1130	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to daemonize, rc=%Rrc. exiting.", rc);
1131	/* create release logger, to file */
1132	rc = com::VBoxLogRelCreate("Watchdog", pszLogFile,
1133	RTLOGFLAGS_PREFIX_THREAD \| RTLOGFLAGS_PREFIX_TIME_PROG,
1134	"all", "VBOXBALLOONCTRL_RELEASE_LOG",
1135	RTLOGDEST_FILE, UINT32_MAX /* cMaxEntriesPerGroup */,
1136	g_cHistory, g_uHistoryFileTime, g_uHistoryFileSize,
1137	RTErrInfoInitStatic(&ErrInfo));
1138	if (RT_FAILURE(rc))
1139	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", ErrInfo.Core.pszMsg, rc);
1140	}
1141	#endif
1142
1143	#ifndef VBOX_ONLY_DOCS
1144	/*
1145	* Initialize COM.
1146	*/
1147	using namespace com;
1148	HRESULT hrc = com::Initialize();
1149	# ifdef VBOX_WITH_XPCOM
1150	if (hrc == NS_ERROR_FILE_ACCESS_DENIED)
1151	{
1152	char szHome[RTPATH_MAX] = "";
1153	com::GetVBoxUserHomeDirectory(szHome, sizeof(szHome));
1154	return RTMsgErrorExit(RTEXITCODE_FAILURE,
1155	"Failed to initialize COM because the global settings directory '%s' is not accessible!", szHome);
1156	}
1157	# endif
1158	if (FAILED(hrc))
1159	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to initialize COM (%Rhrc)!", hrc);
1160
1161	hrc = g_pVirtualBoxClient.createInprocObject(CLSID_VirtualBoxClient);
1162	if (FAILED(hrc))
1163	{
1164	RTMsgError("Failed to create the VirtualBoxClient object (%Rhrc)!", hrc);
1165	com::ErrorInfo info;
1166	if (!info.isFullAvailable() && !info.isBasicAvailable())
1167	{
1168	com::GluePrintRCMessage(hrc);
1169	RTMsgError("Most likely, the VirtualBox COM server is not running or failed to start.");
1170	}
1171	else
1172	com::GluePrintErrorInfo(info);
1173	return RTEXITCODE_FAILURE;
1174	}
1175
1176	if (g_fDryrun)
1177	serviceLog("Running in dryrun mode\n");
1178
1179	rc = watchdogSetup();
1180	if (RT_FAILURE(rc))
1181	return RTEXITCODE_FAILURE;
1182
1183	//HandlerArg handlerArg = { argc, argv };
1184	RTEXITCODE rcExit = watchdogMain(/&handlerArg/);
1185
1186	NativeEventQueue::getMainEventQueue()->processEventQueue(0);
1187
1188	watchdogShutdown();
1189
1190	g_pVirtualBoxClient.setNull();
1191
1192	com::Shutdown();
1193
1194	return rcExit;
1195	#else /* VBOX_ONLY_DOCS */
1196	return RTEXITCODE_SUCCESS;
1197	#endif /* VBOX_ONLY_DOCS */
1198	}
1199

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source: vbox/trunk/src/VBox/Frontends/VBoxBalloonCtrl/VBoxWatchdog.cpp@ 82968

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