server.cpp@ 56587

最後變更在這個檔案從56587是 56587,由 vboxsync 提交於 10 年前
Main/Performance: convert to API wrapper usage, and quite a bit of cleanup
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1	/* $Id: server.cpp 56587 2015-06-22 19:31:59Z vboxsync $ */
2	/** @file
3	* XPCOM server process (VBoxSVC) start point.
4	*/
5
6	/*
7	* Copyright (C) 2004-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.alldomusa.eu.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	#include <ipcIService.h>
19	#include <ipcCID.h>
20
21	#include <nsIComponentRegistrar.h>
22
23	#include <nsEventQueueUtils.h>
24	#include <nsGenericFactory.h>
25
26	#include "prio.h"
27	#include "prproces.h"
28
29	#include "server.h"
30
31	#include "Logging.h"
32
33	#include <VBox/param.h>
34
35	#include <iprt/buildconfig.h>
36	#include <iprt/initterm.h>
37	#include <iprt/critsect.h>
38	#include <iprt/getopt.h>
39	#include <iprt/message.h>
40	#include <iprt/string.h>
41	#include <iprt/stream.h>
42	#include <iprt/path.h>
43	#include <iprt/timer.h>
44	#include <iprt/env.h>
45
46	#include <signal.h> // for the signal handler
47	#include <stdlib.h>
48	#include <unistd.h>
49	#include <errno.h>
50	#include <fcntl.h>
51	#include <sys/stat.h>
52	#include <sys/resource.h>
53
54	/////////////////////////////////////////////////////////////////////////////
55	// VirtualBox component instantiation
56	/////////////////////////////////////////////////////////////////////////////
57
58	#include <nsIGenericFactory.h>
59	#include <VirtualBox_XPCOM.h>
60
61	#include "ApplianceImpl.h"
62	#include "AudioAdapterImpl.h"
63	#include "BandwidthControlImpl.h"
64	#include "BandwidthGroupImpl.h"
65	#include "NetworkServiceRunner.h"
66	#include "DHCPServerImpl.h"
67	#include "GuestOSTypeImpl.h"
68	#include "HostImpl.h"
69	#include "HostNetworkInterfaceImpl.h"
70	#include "MachineImpl.h"
71	#include "MediumFormatImpl.h"
72	#include "MediumImpl.h"
73	#include "NATEngineImpl.h"
74	#include "NetworkAdapterImpl.h"
75	#include "ParallelPortImpl.h"
76	#include "ProgressProxyImpl.h"
77	#include "SerialPortImpl.h"
78	#include "SharedFolderImpl.h"
79	#include "SnapshotImpl.h"
80	#include "StorageControllerImpl.h"
81	#include "SystemPropertiesImpl.h"
82	#include "USBControllerImpl.h"
83	#include "USBDeviceFiltersImpl.h"
84	#include "VFSExplorerImpl.h"
85	#include "VirtualBoxImpl.h"
86	#include "VRDEServerImpl.h"
87	#ifdef VBOX_WITH_USB
88	# include "HostUSBDeviceImpl.h"
89	# include "USBDeviceFilterImpl.h"
90	# include "USBDeviceImpl.h"
91	#endif
92	#ifdef VBOX_WITH_EXTPACK
93	# include "ExtPackManagerImpl.h"
94	#endif
95	# include "NATNetworkImpl.h"
96
97	// This needs to stay - it is needed by the service registration below, and
98	// is defined in the automatically generated VirtualBoxWrap.cpp
99	extern nsIClassInfo *NS_CLASSINFO_NAME(VirtualBoxWrap);
100	NS_DECL_CI_INTERFACE_GETTER(VirtualBoxWrap)
101
102	// The declarations/implementations of the various XPCOM helper data structures
103	// and functions have to be removed bit by bit, as the conversion to the
104	// automatically generated wrappers makes them obsolete.
105
106	/* implement nsISupports parts of our objects with support for nsIClassInfo */
107	NS_DECL_CLASSINFO(SessionMachine)
108	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(SessionMachine, IMachine, IInternalMachineControl)
109
110	NS_DECL_CLASSINFO(SnapshotMachine)
111	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SnapshotMachine, IMachine)
112
113	NS_DECL_CLASSINFO(ProgressProxy)
114	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ProgressProxy, IProgress)
115
116	////////////////////////////////////////////////////////////////////////////////
117
118	static bool gAutoShutdown = false;
119	/** Delay before shutting down the VirtualBox server after the last
120	* VirtualBox instance is released, in ms */
121	static uint32_t gShutdownDelayMs = 5000;
122
123	static nsCOMPtr<nsIEventQueue> gEventQ = nsnull;
124	static PRBool volatile gKeepRunning = PR_TRUE;
125	static PRBool volatile gAllowSigUsrQuit = PR_TRUE;
126
127	/////////////////////////////////////////////////////////////////////////////
128
129	/**
130	* Simple but smart PLEvent wrapper.
131	*
132	* @note Instances must be always created with <tt>operator new</tt>!
133	*/
134	class MyEvent
135	{
136	public:
137
138	MyEvent()
139	{
140	mEv.that = NULL;
141	};
142
143	/**
144	* Posts this event to the given message queue. This method may only be
145	* called once. @note On success, the event will be deleted automatically
146	* after it is delivered and handled. On failure, the event will delete
147	* itself before this method returns! The caller must not delete it in
148	* either case.
149	*/
150	nsresult postTo(nsIEventQueue *aEventQ)
151	{
152	AssertReturn(mEv.that == NULL, NS_ERROR_FAILURE);
153	AssertReturn(aEventQ, NS_ERROR_FAILURE);
154	nsresult rv = aEventQ->InitEvent(&mEv.e, NULL,
155	eventHandler, eventDestructor);
156	if (NS_SUCCEEDED(rv))
157	{
158	mEv.that = this;
159	rv = aEventQ->PostEvent(&mEv.e);
160	if (NS_SUCCEEDED(rv))
161	return rv;
162	}
163	delete this;
164	return rv;
165	}
166
167	virtual void *handler() = 0;
168
169	private:
170
171	struct Ev
172	{
173	PLEvent e;
174	MyEvent *that;
175	} mEv;
176
177	static void PR_CALLBACK eventHandler(PLEvent self)
178	{
179	return reinterpret_cast<Ev *>(self)->that->handler();
180	}
181
182	static void PR_CALLBACK eventDestructor(PLEvent *self)
183	{
184	delete reinterpret_cast<Ev *>(self)->that;
185	}
186	};
187
188	////////////////////////////////////////////////////////////////////////////////
189
190	/**
191	* VirtualBox class factory that destroys the created instance right after
192	* the last reference to it is released by the client, and recreates it again
193	* when necessary (so VirtualBox acts like a singleton object).
194	*/
195	class VirtualBoxClassFactory : public VirtualBox
196	{
197	public:
198
199	virtual ~VirtualBoxClassFactory()
200	{
201	LogFlowFunc(("Deleting VirtualBox...\n"));
202
203	FinalRelease();
204	sInstance = NULL;
205
206	LogFlowFunc(("VirtualBox object deleted.\n"));
207	RTPrintf("Informational: VirtualBox object deleted.\n");
208	}
209
210	NS_IMETHOD_(nsrefcnt) Release()
211	{
212	/* we overload Release() to guarantee the VirtualBox destructor is
213	* always called on the main thread */
214
215	nsrefcnt count = VirtualBox::Release();
216
217	if (count == 1)
218	{
219	/* the last reference held by clients is being released
220	* (see GetInstance()) */
221
222	PRBool onMainThread = PR_TRUE;
223	nsCOMPtr<nsIEventQueue> q(gEventQ);
224	if (q)
225	{
226	q->IsOnCurrentThread(&onMainThread);
227	q = nsnull;
228	}
229
230	PRBool timerStarted = PR_FALSE;
231
232	/* sTimer is null if this call originates from FactoryDestructor()*/
233	if (sTimer != NULL)
234	{
235	LogFlowFunc(("Last VirtualBox instance was released.\n"));
236	LogFlowFunc(("Scheduling server shutdown in %u ms...\n",
237	gShutdownDelayMs));
238
239	/* make sure the previous timer (if any) is stopped;
240	* otherwise RTTimerStart() will definitely fail. */
241	RTTimerLRStop(sTimer);
242
243	int vrc = RTTimerLRStart(sTimer, gShutdownDelayMs * RT_NS_1MS_64);
244	AssertRC(vrc);
245	timerStarted = SUCCEEDED(vrc);
246	}
247	else
248	{
249	LogFlowFunc(("Last VirtualBox instance was released "
250	"on XPCOM shutdown.\n"));
251	Assert(onMainThread);
252	}
253
254	gAllowSigUsrQuit = PR_TRUE;
255
256	if (!timerStarted)
257	{
258	if (!onMainThread)
259	{
260	/* Failed to start the timer, post the shutdown event
261	* manually if not on the main thread already. */
262	ShutdownTimer(NULL, NULL, 0);
263	}
264	else
265	{
266	/* Here we come if:
267	*
268	* a) gEventQ is 0 which means either FactoryDestructor() is called
269	* or the IPC/DCONNECT shutdown sequence is initiated by the
270	* XPCOM shutdown routine (NS_ShutdownXPCOM()), which always
271	* happens on the main thread.
272	*
273	* b) gEventQ has reported we're on the main thread. This means
274	* that DestructEventHandler() has been called, but another
275	* client was faster and requested VirtualBox again.
276	*
277	* In either case, there is nothing to do.
278	*
279	* Note: case b) is actually no more valid since we don't
280	* call Release() from DestructEventHandler() in this case
281	* any more. Thus, we assert below.
282	*/
283
284	Assert(!gEventQ);
285	}
286	}
287	}
288
289	return count;
290	}
291
292	class MaybeQuitEvent : public MyEvent
293	{
294	/* called on the main thread */
295	void *handler()
296	{
297	LogFlowFuncEnter();
298
299	Assert(RTCritSectIsInitialized(&sLock));
300
301	/* stop accepting GetInstance() requests on other threads during
302	* possible destruction */
303	RTCritSectEnter(&sLock);
304
305	nsrefcnt count = 0;
306
307	/* sInstance is NULL here if it was deleted immediately after
308	* creation due to initialization error. See GetInstance(). */
309	if (sInstance != NULL)
310	{
311	/* Release the guard reference added in GetInstance() */
312	count = sInstance->Release();
313	}
314
315	if (count == 0)
316	{
317	if (gAutoShutdown)
318	{
319	Assert(sInstance == NULL);
320	LogFlowFunc(("Terminating the server process...\n"));
321	/* make it leave the event loop */
322	gKeepRunning = PR_FALSE;
323	}
324	else
325	LogFlowFunc(("No automatic shutdown.\n"));
326	}
327	else
328	{
329	/* This condition is quite rare: a new client happened to
330	* connect after this event has been posted to the main queue
331	* but before it started to process it. */
332	LogFlowFunc(("Destruction is canceled (refcnt=%d).\n", count));
333	}
334
335	RTCritSectLeave(&sLock);
336
337	LogFlowFuncLeave();
338	return NULL;
339	}
340	};
341
342	static void ShutdownTimer(RTTIMERLR hTimerLR, void pvUser, uint64_t /iTick*/)
343	{
344	NOREF(hTimerLR);
345	NOREF(pvUser);
346
347	/* A "too late" event is theoretically possible if somebody
348	* manually ended the server after a destruction has been scheduled
349	* and this method was so lucky that it got a chance to run before
350	* the timer was killed. */
351	nsCOMPtr<nsIEventQueue> q(gEventQ);
352	AssertReturnVoid(q);
353
354	/* post a quit event to the main queue */
355	MaybeQuitEvent *ev = new MaybeQuitEvent();
356	nsresult rv = ev->postTo(q);
357	NOREF(rv);
358
359	/* A failure above means we've been already stopped (for example
360	* by Ctrl-C). FactoryDestructor() (NS_ShutdownXPCOM())
361	* will do the job. Nothing to do. */
362	}
363
364	static NS_IMETHODIMP FactoryConstructor()
365	{
366	LogFlowFunc(("\n"));
367
368	/* create a critsect to protect object construction */
369	if (RT_FAILURE(RTCritSectInit(&sLock)))
370	return NS_ERROR_OUT_OF_MEMORY;
371
372	int vrc = RTTimerLRCreateEx(&sTimer, 0, 0, ShutdownTimer, NULL);
373	if (RT_FAILURE(vrc))
374	{
375	LogFlowFunc(("Failed to create a timer! (vrc=%Rrc)\n", vrc));
376	return NS_ERROR_FAILURE;
377	}
378
379	return NS_OK;
380	}
381
382	static NS_IMETHODIMP FactoryDestructor()
383	{
384	LogFlowFunc(("\n"));
385
386	RTTimerLRDestroy(sTimer);
387	sTimer = NULL;
388
389	if (sInstance != NULL)
390	{
391	/* Either posting a destruction event failed for some reason (most
392	* likely, the quit event has been received before the last release),
393	* or the client has terminated abnormally w/o releasing its
394	* VirtualBox instance (so NS_ShutdownXPCOM() is doing a cleanup).
395	* Release the guard reference we added in GetInstance(). */
396	sInstance->Release();
397	}
398
399	/* Destroy lock after releasing the VirtualBox instance, otherwise
400	* there are races with cleanup. */
401	RTCritSectDelete(&sLock);
402
403	return NS_OK;
404	}
405
406	static nsresult GetInstance(VirtualBox **inst)
407	{
408	LogFlowFunc(("Getting VirtualBox object...\n"));
409
410	RTCritSectEnter(&sLock);
411
412	if (!gKeepRunning)
413	{
414	LogFlowFunc(("Process termination requested first. Refusing.\n"));
415
416	RTCritSectLeave(&sLock);
417
418	/* this rv is what CreateInstance() on the client side returns
419	* when the server process stops accepting events. Do the same
420	* here. The client wrapper should attempt to start a new process in
421	* response to a failure from us. */
422	return NS_ERROR_ABORT;
423	}
424
425	nsresult rv = NS_OK;
426
427	if (sInstance == NULL)
428	{
429	LogFlowFunc(("Creating new VirtualBox object...\n"));
430	sInstance = new VirtualBoxClassFactory();
431	if (sInstance != NULL)
432	{
433	/* make an extra AddRef to take the full control
434	* on the VirtualBox destruction (see FinalRelease()) */
435	sInstance->AddRef();
436
437	sInstance->AddRef(); /* protect FinalConstruct() */
438	rv = sInstance->FinalConstruct();
439	RTPrintf("Informational: VirtualBox object created (rc=%Rhrc).\n", rv);
440	if (NS_FAILED(rv))
441	{
442	/* On failure diring VirtualBox initialization, delete it
443	* immediately on the current thread by releasing all
444	* references in order to properly schedule the server
445	* shutdown. Since the object is fully deleted here, there
446	* is a chance to fix the error and request a new
447	* instantiation before the server terminates. However,
448	* the main reason to maintain the shutdown delay on
449	* failure is to let the front-end completely fetch error
450	* info from a server-side IVirtualBoxErrorInfo object. */
451	sInstance->Release();
452	sInstance->Release();
453	Assert(sInstance == NULL);
454	}
455	else
456	{
457	/* On success, make sure the previous timer is stopped to
458	* cancel a scheduled server termination (if any). */
459	gAllowSigUsrQuit = PR_FALSE;
460	RTTimerLRStop(sTimer);
461	}
462	}
463	else
464	{
465	rv = NS_ERROR_OUT_OF_MEMORY;
466	}
467	}
468	else
469	{
470	LogFlowFunc(("Using existing VirtualBox object...\n"));
471	nsrefcnt count = sInstance->AddRef();
472	Assert(count > 1);
473
474	if (count == 2)
475	{
476	LogFlowFunc(("Another client has requested a reference to VirtualBox, canceling destruction...\n"));
477
478	/* make sure the previous timer is stopped */
479	gAllowSigUsrQuit = PR_FALSE;
480	RTTimerLRStop(sTimer);
481	}
482	}
483
484	*inst = sInstance;
485
486	RTCritSectLeave(&sLock);
487
488	return rv;
489	}
490
491	private:
492
493	/* Don't be confused that sInstance is of the *ClassFactory type. This is
494	* actually a singleton instance (*ClassFactory inherits the singleton
495	* class; we combined them just for "simplicity" and used "static" for
496	* factory methods. *ClassFactory here is necessary for a couple of extra
497	* methods. */
498
499	static VirtualBoxClassFactory *sInstance;
500	static RTCRITSECT sLock;
501
502	static RTTIMERLR sTimer;
503	};
504
505	VirtualBoxClassFactory *VirtualBoxClassFactory::sInstance = NULL;
506	RTCRITSECT VirtualBoxClassFactory::sLock;
507
508	RTTIMERLR VirtualBoxClassFactory::sTimer = NIL_RTTIMERLR;
509
510	NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR_WITH_RC(VirtualBox, VirtualBoxClassFactory::GetInstance)
511
512	////////////////////////////////////////////////////////////////////////////////
513
514	typedef NSFactoryDestructorProcPtr NSFactoryConstructorProcPtr;
515
516	/**
517	* Enhanced module component information structure.
518	*
519	* nsModuleComponentInfo lacks the factory construction callback, here we add
520	* it. This callback is called straight after a nsGenericFactory instance is
521	* successfully created in RegisterSelfComponents.
522	*/
523	struct nsModuleComponentInfoPlusFactoryConstructor
524	{
525	/** standard module component information */
526	const nsModuleComponentInfo *mpModuleComponentInfo;
527	/** (optional) Factory Construction Callback */
528	NSFactoryConstructorProcPtr mFactoryConstructor;
529	};
530
531	/////////////////////////////////////////////////////////////////////////////
532
533	/**
534	* Helper function to register self components upon start-up
535	* of the out-of-proc server.
536	*/
537	static nsresult
538	RegisterSelfComponents(nsIComponentRegistrar *registrar,
539	const nsModuleComponentInfoPlusFactoryConstructor *aComponents,
540	PRUint32 count)
541	{
542	nsresult rc = NS_OK;
543	const nsModuleComponentInfoPlusFactoryConstructor *info = aComponents;
544	for (PRUint32 i = 0; i < count && NS_SUCCEEDED(rc); i++, info++)
545	{
546	/* skip components w/o a constructor */
547	if (!info->mpModuleComponentInfo->mConstructor)
548	continue;
549	/* create a new generic factory for a component and register it */
550	nsIGenericFactory *factory;
551	rc = NS_NewGenericFactory(&factory, info->mpModuleComponentInfo);
552	if (NS_SUCCEEDED(rc) && info->mFactoryConstructor)
553	{
554	rc = info->mFactoryConstructor();
555	if (NS_FAILED(rc))
556	NS_RELEASE(factory);
557	}
558	if (NS_SUCCEEDED(rc))
559	{
560	rc = registrar->RegisterFactory(info->mpModuleComponentInfo->mCID,
561	info->mpModuleComponentInfo->mDescription,
562	info->mpModuleComponentInfo->mContractID,
563	factory);
564	NS_RELEASE(factory);
565	}
566	}
567	return rc;
568	}
569
570	/////////////////////////////////////////////////////////////////////////////
571
572	static ipcIService *gIpcServ = nsnull;
573	static const char *g_pszPidFile = NULL;
574
575	class ForceQuitEvent : public MyEvent
576	{
577	void *handler()
578	{
579	LogFlowFunc(("\n"));
580
581	gKeepRunning = PR_FALSE;
582
583	if (g_pszPidFile)
584	RTFileDelete(g_pszPidFile);
585
586	return NULL;
587	}
588	};
589
590	static void signal_handler(int sig)
591	{
592	nsCOMPtr<nsIEventQueue> q(gEventQ);
593	if (q && gKeepRunning)
594	{
595	if (sig == SIGUSR1)
596	{
597	if (gAllowSigUsrQuit)
598	{
599	VirtualBoxClassFactory::MaybeQuitEvent *ev = new VirtualBoxClassFactory::MaybeQuitEvent();
600	ev->postTo(q);
601	}
602	/* else do nothing */
603	}
604	else
605	{
606	/* post a force quit event to the queue */
607	ForceQuitEvent *ev = new ForceQuitEvent();
608	ev->postTo(q);
609	}
610	}
611	}
612
613	static nsresult vboxsvcSpawnDaemonByReExec(const char pszPath, bool fAutoShutdown, const char pszPidFile)
614	{
615	PRFileDesc readable = nsnull, writable = nsnull;
616	PRProcessAttr *attr = nsnull;
617	nsresult rv = NS_ERROR_FAILURE;
618	PRFileDesc *devNull;
619	unsigned args_index = 0;
620	// The ugly casts are necessary because the PR_CreateProcessDetached has
621	// a const array of writable strings as a parameter. It won't write. */
622	char * args[1 + 1 + 2 + 1];
623	args[args_index++] = (char *)pszPath;
624	if (fAutoShutdown)
625	args[args_index++] = (char *)"--auto-shutdown";
626	if (pszPidFile)
627	{
628	args[args_index++] = (char *)"--pidfile";
629	args[args_index++] = (char *)pszPidFile;
630	}
631	args[args_index++] = 0;
632
633	// Use a pipe to determine when the daemon process is in the position
634	// to actually process requests. The daemon will write "READY" to the pipe.
635	if (PR_CreatePipe(&readable, &writable) != PR_SUCCESS)
636	goto end;
637	PR_SetFDInheritable(writable, PR_TRUE);
638
639	attr = PR_NewProcessAttr();
640	if (!attr)
641	goto end;
642
643	if (PR_ProcessAttrSetInheritableFD(attr, writable, VBOXSVC_STARTUP_PIPE_NAME) != PR_SUCCESS)
644	goto end;
645
646	devNull = PR_Open("/dev/null", PR_RDWR, 0);
647	if (!devNull)
648	goto end;
649
650	PR_ProcessAttrSetStdioRedirect(attr, PR_StandardInput, devNull);
651	PR_ProcessAttrSetStdioRedirect(attr, PR_StandardOutput, devNull);
652	PR_ProcessAttrSetStdioRedirect(attr, PR_StandardError, devNull);
653
654	if (PR_CreateProcessDetached(pszPath, (char * const *)args, nsnull, attr) != PR_SUCCESS)
655	goto end;
656
657	// Close /dev/null
658	PR_Close(devNull);
659	// Close the child end of the pipe to make it the only owner of the
660	// file descriptor, so that unexpected closing can be detected.
661	PR_Close(writable);
662	writable = nsnull;
663
664	char msg[10];
665	memset(msg, '\0', sizeof(msg));
666	if ( PR_Read(readable, msg, sizeof(msg)-1) != 5
667	\|\| strcmp(msg, "READY"))
668	goto end;
669
670	rv = NS_OK;
671
672	end:
673	if (readable)
674	PR_Close(readable);
675	if (writable)
676	PR_Close(writable);
677	if (attr)
678	PR_DestroyProcessAttr(attr);
679	return rv;
680	}
681
682	int main(int argc, char **argv)
683	{
684	/*
685	* Initialize the VBox runtime without loading
686	* the support driver
687	*/
688	int vrc = RTR3InitExe(argc, &argv, 0);
689	if (RT_FAILURE(vrc))
690	return RTMsgInitFailure(vrc);
691
692	static const RTGETOPTDEF s_aOptions[] =
693	{
694	{ "--automate", 'a', RTGETOPT_REQ_NOTHING },
695	{ "--auto-shutdown", 'A', RTGETOPT_REQ_NOTHING },
696	{ "--daemonize", 'd', RTGETOPT_REQ_NOTHING },
697	{ "--shutdown-delay", 'D', RTGETOPT_REQ_UINT32 },
698	{ "--pidfile", 'p', RTGETOPT_REQ_STRING },
699	{ "--logfile", 'F', RTGETOPT_REQ_STRING },
700	{ "--logrotate", 'R', RTGETOPT_REQ_UINT32 },
701	{ "--logsize", 'S', RTGETOPT_REQ_UINT64 },
702	{ "--loginterval", 'I', RTGETOPT_REQ_UINT32 }
703	};
704
705	const char *pszLogFile = NULL;
706	uint32_t cHistory = 10; // enable log rotation, 10 files
707	uint32_t uHistoryFileTime = RT_SEC_1DAY; // max 1 day per file
708	uint64_t uHistoryFileSize = 100 * _1M; // max 100MB per file
709	bool fDaemonize = false;
710	PRFileDesc *daemon_pipe_wr = nsnull;
711
712	RTGETOPTSTATE GetOptState;
713	vrc = RTGetOptInit(&GetOptState, argc, argv, &s_aOptions[0], RT_ELEMENTS(s_aOptions), 1, 0 /fFlags/);
714	AssertRC(vrc);
715
716	RTGETOPTUNION ValueUnion;
717	while ((vrc = RTGetOpt(&GetOptState, &ValueUnion)))
718	{
719	switch (vrc)
720	{
721	case 'a':
722	/* --automate mode means we are started by XPCOM on
723	* demand. Daemonize ourselves and activate
724	* auto-shutdown. */
725	gAutoShutdown = true;
726	fDaemonize = true;
727	break;
728
729	case 'A':
730	/* --auto-shutdown mode means we're already daemonized. */
731	gAutoShutdown = true;
732	break;
733
734	case 'd':
735	fDaemonize = true;
736	break;
737
738	case 'D':
739	gShutdownDelayMs = ValueUnion.u32;
740	break;
741
742	case 'p':
743	g_pszPidFile = ValueUnion.psz;
744	break;
745
746	case 'F':
747	pszLogFile = ValueUnion.psz;
748	break;
749
750	case 'R':
751	cHistory = ValueUnion.u32;
752	break;
753
754	case 'S':
755	uHistoryFileSize = ValueUnion.u64;
756	break;
757
758	case 'I':
759	uHistoryFileTime = ValueUnion.u32;
760	break;
761
762	case 'h':
763	RTPrintf("no help\n");
764	return 1;
765
766	case 'V':
767	RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr());
768	return 0;
769
770	default:
771	return RTGetOptPrintError(vrc, &ValueUnion);
772	}
773	}
774
775	if (fDaemonize)
776	{
777	vboxsvcSpawnDaemonByReExec(argv[0], gAutoShutdown, g_pszPidFile);
778	exit(126);
779	}
780
781	nsresult rc;
782
783	/** @todo Merge this code with svcmain.cpp (use Logging.cpp?). */
784	char szLogFile[RTPATH_MAX];
785	if (!pszLogFile)
786	{
787	vrc = com::GetVBoxUserHomeDirectory(szLogFile, sizeof(szLogFile));
788	if (RT_SUCCESS(vrc))
789	vrc = RTPathAppend(szLogFile, sizeof(szLogFile), "VBoxSVC.log");
790	}
791	else
792	{
793	if (!RTStrPrintf(szLogFile, sizeof(szLogFile), "%s", pszLogFile))
794	vrc = VERR_NO_MEMORY;
795	}
796	if (RT_FAILURE(vrc))
797	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to create logging file name, rc=%Rrc", vrc);
798
799	char szError[RTPATH_MAX + 128];
800	vrc = com::VBoxLogRelCreate("XPCOM Server", szLogFile,
801	RTLOGFLAGS_PREFIX_THREAD \| RTLOGFLAGS_PREFIX_TIME_PROG,
802	VBOXSVC_LOG_DEFAULT, "VBOXSVC_RELEASE_LOG",
803	RTLOGDEST_FILE, UINT32_MAX /* cMaxEntriesPerGroup */,
804	cHistory, uHistoryFileTime, uHistoryFileSize,
805	szError, sizeof(szError));
806	if (RT_FAILURE(vrc))
807	return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", szError, vrc);
808
809	daemon_pipe_wr = PR_GetInheritedFD(VBOXSVC_STARTUP_PIPE_NAME);
810	RTEnvUnset("NSPR_INHERIT_FDS");
811
812	const nsModuleComponentInfo VirtualBoxInfo = {
813	"VirtualBox component",
814	NS_VIRTUALBOX_CID,
815	NS_VIRTUALBOX_CONTRACTID,
816	VirtualBoxConstructor, // constructor function
817	NULL, // registration function
818	NULL, // deregistration function
819	VirtualBoxClassFactory::FactoryDestructor, // factory destructor function
820	NS_CI_INTERFACE_GETTER_NAME(VirtualBoxWrap),
821	NULL, // language helper
822	&NS_CLASSINFO_NAME(VirtualBoxWrap),
823	0 // flags
824	};
825
826	const nsModuleComponentInfoPlusFactoryConstructor components[] = {
827	{
828	&VirtualBoxInfo,
829	VirtualBoxClassFactory::FactoryConstructor // factory constructor function
830	}
831	};
832
833	do
834	{
835	rc = com::Initialize();
836	if (NS_FAILED(rc))
837	{
838	RTMsgError("Failed to initialize XPCOM! (rc=%Rhrc)\n", rc);
839	break;
840	}
841
842	nsCOMPtr<nsIComponentRegistrar> registrar;
843	rc = NS_GetComponentRegistrar(getter_AddRefs(registrar));
844	if (NS_FAILED(rc))
845	{
846	RTMsgError("Failed to get component registrar! (rc=%Rhrc)", rc);
847	break;
848	}
849
850	registrar->AutoRegister(nsnull);
851	rc = RegisterSelfComponents(registrar, components,
852	NS_ARRAY_LENGTH(components));
853	if (NS_FAILED(rc))
854	{
855	RTMsgError("Failed to register server components! (rc=%Rhrc)", rc);
856	break;
857	}
858
859	/* get the main thread's event queue (afaik, the dconnect service always
860	* gets created upon XPCOM startup, so it will use the main (this)
861	* thread's event queue to receive IPC events) */
862	rc = NS_GetMainEventQ(getter_AddRefs(gEventQ));
863	if (NS_FAILED(rc))
864	{
865	RTMsgError("Failed to get the main event queue! (rc=%Rhrc)", rc);
866	break;
867	}
868
869	nsCOMPtr<ipcIService> ipcServ(do_GetService(IPC_SERVICE_CONTRACTID, &rc));
870	if (NS_FAILED(rc))
871	{
872	RTMsgError("Failed to get IPC service! (rc=%Rhrc)", rc);
873	break;
874	}
875
876	NS_ADDREF(gIpcServ = ipcServ);
877
878	LogFlowFunc(("Will use \"%s\" as server name.\n", VBOXSVC_IPC_NAME));
879
880	rc = gIpcServ->AddName(VBOXSVC_IPC_NAME);
881	if (NS_FAILED(rc))
882	{
883	LogFlowFunc(("Failed to register the server name (rc=%Rhrc (%08X))!\n"
884	"Is another server already running?\n", rc, rc));
885
886	RTMsgError("Failed to register the server name \"%s\" (rc=%Rhrc)!\n"
887	"Is another server already running?\n",
888	VBOXSVC_IPC_NAME, rc);
889	NS_RELEASE(gIpcServ);
890	break;
891	}
892
893	{
894	/* setup signal handling to convert some signals to a quit event */
895	struct sigaction sa;
896	sa.sa_handler = signal_handler;
897	sigemptyset(&sa.sa_mask);
898	sa.sa_flags = 0;
899	sigaction(SIGINT, &sa, NULL);
900	sigaction(SIGQUIT, &sa, NULL);
901	sigaction(SIGTERM, &sa, NULL);
902	sigaction(SIGTRAP, &sa, NULL);
903	sigaction(SIGUSR1, &sa, NULL);
904	}
905
906	{
907	char szBuf[80];
908	int iSize;
909
910	iSize = RTStrPrintf(szBuf, sizeof(szBuf),
911	VBOX_PRODUCT" XPCOM Server Version "
912	VBOX_VERSION_STRING);
913	for (int i = iSize; i > 0; i--)
914	putchar('*');
915	RTPrintf("\n%s\n", szBuf);
916	RTPrintf("(C) 2004-" VBOX_C_YEAR " " VBOX_VENDOR "\n"
917	"All rights reserved.\n");
918	#ifdef DEBUG
919	RTPrintf("Debug version.\n");
920	#endif
921	}
922
923	if (daemon_pipe_wr != nsnull)
924	{
925	RTPrintf("\nStarting event loop....\n[send TERM signal to quit]\n");
926	/* now we're ready, signal the parent process */
927	PR_Write(daemon_pipe_wr, "READY", strlen("READY"));
928	/* close writing end of the pipe, its job is done */
929	PR_Close(daemon_pipe_wr);
930	}
931	else
932	RTPrintf("\nStarting event loop....\n[press Ctrl-C to quit]\n");
933
934	if (g_pszPidFile)
935	{
936	RTFILE hPidFile = NIL_RTFILE;
937	vrc = RTFileOpen(&hPidFile, g_pszPidFile, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE \| RTFILE_O_DENY_NONE);
938	if (RT_SUCCESS(vrc))
939	{
940	char szBuf[32];
941	const char *lf = "\n";
942	RTStrFormatNumber(szBuf, getpid(), 10, 0, 0, 0);
943	RTFileWrite(hPidFile, szBuf, strlen(szBuf), NULL);
944	RTFileWrite(hPidFile, lf, strlen(lf), NULL);
945	RTFileClose(hPidFile);
946	}
947	}
948
949	// Increase the file table size to 10240 or as high as possible.
950	struct rlimit lim;
951	if (getrlimit(RLIMIT_NOFILE, &lim) == 0)
952	{
953	if ( lim.rlim_cur < 10240
954	&& lim.rlim_cur < lim.rlim_max)
955	{
956	lim.rlim_cur = RT_MIN(lim.rlim_max, 10240);
957	if (setrlimit(RLIMIT_NOFILE, &lim) == -1)
958	RTPrintf("WARNING: failed to increase file descriptor limit. (%d)\n", errno);
959	}
960	}
961	else
962	RTPrintf("WARNING: failed to obtain per-process file-descriptor limit (%d).\n", errno);
963
964	PLEvent *ev;
965	while (gKeepRunning)
966	{
967	gEventQ->WaitForEvent(&ev);
968	gEventQ->HandleEvent(ev);
969	}
970
971	/* stop accepting new events. Clients that happen to resolve our
972	* name and issue a CreateInstance() request after this point will
973	* get NS_ERROR_ABORT once we handle the remaining messages. As a
974	* result, they should try to start a new server process. */
975	gEventQ->StopAcceptingEvents();
976
977	/* unregister ourselves. After this point, clients will start a new
978	* process because they won't be able to resolve the server name.*/
979	gIpcServ->RemoveName(VBOXSVC_IPC_NAME);
980
981	/* process any remaining events. These events may include
982	* CreateInstance() requests received right before we called
983	* StopAcceptingEvents() above, and those will fail. */
984	gEventQ->ProcessPendingEvents();
985
986	RTPrintf("Terminated event loop.\n");
987	}
988	while (0); // this scopes the nsCOMPtrs
989
990	NS_IF_RELEASE(gIpcServ);
991	gEventQ = nsnull;
992
993	/* no nsCOMPtrs are allowed to be alive when you call com::Shutdown(). */
994
995	LogFlowFunc(("Calling com::Shutdown()...\n"));
996	rc = com::Shutdown();
997	LogFlowFunc(("Finished com::Shutdown() (rc=%Rhrc)\n", rc));
998
999	if (NS_FAILED(rc))
1000	RTMsgError("Failed to shutdown XPCOM! (rc=%Rhrc)", rc);
1001
1002	RTPrintf("XPCOM server has shutdown.\n");
1003
1004	if (g_pszPidFile)
1005	RTFileDelete(g_pszPidFile);
1006
1007	return 0;
1008	}

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source: vbox/trunk/src/VBox/Main/src-server/xpcom/server.cpp@ 56587

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