server.cpp@ 7692

Last change on this file since 7692 was 7442, checked in by vboxsync, 17 years ago
Main: Applied SATA changes from #2406. Increased XML settings version format from 1.2 to 1.3.pre.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 35.1 KB

Line
1	/** @file
2	*
3	* XPCOM server process start point
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 innotek GmbH
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	#include <ipcIService.h>
19	#include <ipcCID.h>
20
21	#include <nsIComponentRegistrar.h>
22
23	#if defined(XPCOM_GLUE)
24	#include <nsXPCOMGlue.h>
25	#endif
26
27	#include <nsEventQueueUtils.h>
28	#include <nsGenericFactory.h>
29
30	#include "linux/server.h"
31
32	#include "Logging.h"
33
34	#include <iprt/runtime.h>
35	#include <iprt/path.h>
36	#include <iprt/critsect.h>
37	#include <iprt/timer.h>
38
39	#include <VBox/param.h>
40	#include <VBox/version.h>
41
42	#include <VBox/com/com.h>
43
44	#include <stdio.h>
45
46	// for the signal handler
47	#include <signal.h>
48	#include <stdlib.h>
49	#include <unistd.h>
50	#include <errno.h>
51	#include <getopt.h>
52
53	// for the backtrace signal handler
54	#if defined(DEBUG) && defined(RT_OS_LINUX)
55	# define USE_BACKTRACE
56	#endif
57	#if defined(USE_BACKTRACE)
58	# include <execinfo.h>
59	// get REG_EIP/RIP from ucontext.h
60	# ifndef __USE_GNU
61	# define __USE_GNU
62	# endif
63	# include <ucontext.h>
64	# ifdef RT_ARCH_AMD64
65	# define REG_PC REG_RIP
66	# else
67	# define REG_PC REG_EIP
68	# endif
69	#endif
70
71	/////////////////////////////////////////////////////////////////////////////
72	// VirtualBox component instantiation
73	/////////////////////////////////////////////////////////////////////////////
74
75	#include <nsIGenericFactory.h>
76
77	#include <VirtualBox_XPCOM.h>
78	#include <VirtualBoxImpl.h>
79	#include <MachineImpl.h>
80	#include <SnapshotImpl.h>
81	#include <HardDiskImpl.h>
82	#include <ProgressImpl.h>
83	#include <DVDDriveImpl.h>
84	#include <FloppyDriveImpl.h>
85	#include <VRDPServerImpl.h>
86	#include <DVDImageImpl.h>
87	#include <FloppyImageImpl.h>
88	#include <SharedFolderImpl.h>
89	#include <HostImpl.h>
90	#include <HostDVDDriveImpl.h>
91	#include <HostFloppyDriveImpl.h>
92	#include <HostUSBDeviceImpl.h>
93	#include <GuestOSTypeImpl.h>
94	#include <NetworkAdapterImpl.h>
95	#include <SerialPortImpl.h>
96	#include <ParallelPortImpl.h>
97	#include <USBControllerImpl.h>
98	#include <USBDeviceImpl.h>
99	#include <SATAControllerImpl.h>
100	#include <AudioAdapterImpl.h>
101	#include <SystemPropertiesImpl.h>
102	#include <Collection.h>
103
104	// implement nsISupports parts of our objects with support for nsIClassInfo
105	NS_DECL_CLASSINFO(VirtualBox)
106	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VirtualBox, IVirtualBox)
107	NS_DECL_CLASSINFO(Machine)
108	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Machine, IMachine)
109	NS_DECL_CLASSINFO(SessionMachine)
110	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(SessionMachine, IMachine, IInternalMachineControl)
111	NS_DECL_CLASSINFO(SnapshotMachine)
112	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SnapshotMachine, IMachine)
113	NS_DECL_CLASSINFO(Snapshot)
114	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Snapshot, ISnapshot)
115	NS_DECL_CLASSINFO(HardDisk)
116	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HardDisk, IHardDisk)
117	NS_DECL_CLASSINFO(HVirtualDiskImage)
118	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HVirtualDiskImage, IHardDisk, IVirtualDiskImage)
119	NS_DECL_CLASSINFO(HISCSIHardDisk)
120	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HISCSIHardDisk, IHardDisk, IISCSIHardDisk)
121	NS_DECL_CLASSINFO(HVMDKImage)
122	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HVMDKImage, IHardDisk, IVMDKImage)
123	NS_DECL_CLASSINFO(HCustomHardDisk)
124	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HCustomHardDisk, IHardDisk, ICustomHardDisk)
125	NS_DECL_CLASSINFO(HVHDImage)
126	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HVHDImage, IHardDisk, IVHDImage)
127	NS_DECL_CLASSINFO(HardDiskAttachment)
128	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HardDiskAttachment, IHardDiskAttachment)
129	NS_DECL_CLASSINFO(Progress)
130	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Progress, IProgress)
131	NS_DECL_CLASSINFO(CombinedProgress)
132	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(CombinedProgress, IProgress)
133	NS_DECL_CLASSINFO(DVDDrive)
134	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(DVDDrive, IDVDDrive)
135	NS_DECL_CLASSINFO(FloppyDrive)
136	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(FloppyDrive, IFloppyDrive)
137	NS_DECL_CLASSINFO(SharedFolder)
138	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SharedFolder, ISharedFolder)
139	#ifdef VBOX_VRDP
140	NS_DECL_CLASSINFO(VRDPServer)
141	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VRDPServer, IVRDPServer)
142	#endif
143	NS_DECL_CLASSINFO(DVDImage)
144	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(DVDImage, IDVDImage)
145	NS_DECL_CLASSINFO(FloppyImage)
146	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(FloppyImage, IFloppyImage)
147	NS_DECL_CLASSINFO(Host)
148	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Host, IHost)
149	NS_DECL_CLASSINFO(HostDVDDrive)
150	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HostDVDDrive, IHostDVDDrive)
151	NS_DECL_CLASSINFO(HostFloppyDrive)
152	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HostFloppyDrive, IHostFloppyDrive)
153	NS_DECL_CLASSINFO(GuestOSType)
154	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(GuestOSType, IGuestOSType)
155	NS_DECL_CLASSINFO(NetworkAdapter)
156	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(NetworkAdapter, INetworkAdapter)
157	NS_DECL_CLASSINFO(SerialPort)
158	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SerialPort, ISerialPort)
159	NS_DECL_CLASSINFO(ParallelPort)
160	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ParallelPort, IParallelPort)
161	NS_DECL_CLASSINFO(USBController)
162	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(USBController, IUSBController)
163	NS_DECL_CLASSINFO(SATAController)
164	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SATAController, ISATAController)
165	NS_DECL_CLASSINFO(USBDeviceFilter)
166	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(USBDeviceFilter, IUSBDeviceFilter)
167	NS_DECL_CLASSINFO(HostUSBDevice)
168	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HostUSBDevice, IUSBDevice, IHostUSBDevice)
169	NS_DECL_CLASSINFO(HostUSBDeviceFilter)
170	NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HostUSBDeviceFilter, IUSBDeviceFilter, IHostUSBDeviceFilter)
171	NS_DECL_CLASSINFO(AudioAdapter)
172	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(AudioAdapter, IAudioAdapter)
173	NS_DECL_CLASSINFO(SystemProperties)
174	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SystemProperties, ISystemProperties)
175	NS_DECL_CLASSINFO(BIOSSettings)
176	NS_IMPL_THREADSAFE_ISUPPORTS1_CI(BIOSSettings, IBIOSSettings)
177
178	// collections and enumerators
179	COM_IMPL_READONLY_ENUM_AND_COLLECTION(Machine)
180	COM_IMPL_READONLY_ENUM_AND_COLLECTION(Snapshot)
181	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HardDiskAttachment)
182	COM_IMPL_READONLY_ENUM_AND_COLLECTION(GuestOSType)
183	COM_IMPL_READONLY_ENUM_AND_COLLECTION(USBDeviceFilter)
184	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HostDVDDrive)
185	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HostFloppyDrive)
186	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HostUSBDevice)
187	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HostUSBDeviceFilter)
188	COM_IMPL_READONLY_ENUM_AND_COLLECTION(HardDisk)
189	COM_IMPL_READONLY_ENUM_AND_COLLECTION(DVDImage)
190	COM_IMPL_READONLY_ENUM_AND_COLLECTION(FloppyImage)
191	COM_IMPL_READONLY_ENUM_AND_COLLECTION(SharedFolder)
192
193	COM_IMPL_READONLY_ENUM_AND_COLLECTION_AS(Progress, IProgress)
194	COM_IMPL_READONLY_ENUM_AND_COLLECTION_AS(IfaceUSBDevice, IUSBDevice)
195
196	////////////////////////////////////////////////////////////////////////////////
197
198	enum
199	{
200	/* Delay before shutting down the VirtualBox server after the last
201	* VirtualBox instance is released, in ms */
202	VBoxSVC_ShutdownDelay = 5000,
203	};
204
205	static bool gAutoShutdown = false;
206
207	static nsIEventQueue* gEventQ = nsnull;
208	static PRBool volatile gKeepRunning = PR_TRUE;
209
210	/////////////////////////////////////////////////////////////////////////////
211
212	/**
213	* Simple but smart PLEvent wrapper.
214	*
215	* @note Instances must be always created with <tt>operator new</tt>!
216	*/
217	class MyEvent
218	{
219	public:
220
221	MyEvent()
222	{
223	mEv.that = NULL;
224	};
225
226	/**
227	* Posts this event to the given message queue. This method may only be
228	* called once. @note On success, the event will be deleted automatically
229	* after it is delivered and handled. On failure, the event will delete
230	* itself before this method returns! The caller must not delete it in
231	* either case.
232	*/
233	nsresult postTo (nsIEventQueue *aEventQ)
234	{
235	AssertReturn (mEv.that == NULL, NS_ERROR_FAILURE);
236	AssertReturn (aEventQ, NS_ERROR_FAILURE);
237	nsresult rv = aEventQ->InitEvent (&mEv.e, NULL,
238	eventHandler, eventDestructor);
239	if (NS_SUCCEEDED (rv))
240	{
241	mEv.that = this;
242	rv = aEventQ->PostEvent (&mEv.e);
243	if (NS_SUCCEEDED (rv))
244	return rv;
245	}
246	delete this;
247	return rv;
248	}
249
250	virtual void *handler() = 0;
251
252	private:
253
254	struct Ev
255	{
256	PLEvent e;
257	MyEvent *that;
258	} mEv;
259
260	static void PR_CALLBACK eventHandler (PLEvent self)
261	{
262	return reinterpret_cast <Ev *> (self)->that->handler();
263	}
264
265	static void PR_CALLBACK eventDestructor (PLEvent *self)
266	{
267	delete reinterpret_cast <Ev *> (self)->that;
268	}
269	};
270
271	////////////////////////////////////////////////////////////////////////////////
272
273	/**
274	* VirtualBox class factory that destroys the created instance right after
275	* the last reference to it is released by the client, and recreates it again
276	* when necessary (so VirtualBox acts like a singleton object).
277	*/
278	class VirtualBoxClassFactory : public VirtualBox
279	{
280	public:
281
282	virtual ~VirtualBoxClassFactory()
283	{
284	LogFlowFunc (("Deleting VirtualBox...\n"));
285
286	FinalRelease();
287	sInstance = 0;
288
289	LogFlowFunc (("VirtualBox object deleted.\n"));
290	printf ("Informational: VirtualBox object deleted.\n");
291	}
292
293	NS_IMETHOD_(nsrefcnt) Release()
294	{
295	/* we overload Release() to guarantee the VirtualBox destructor is
296	* always called on the main thread */
297
298	nsrefcnt count = VirtualBox::Release();
299
300	if (count == 1)
301	{
302	/* the last reference held by clients is being released
303	* (see GetInstance()) */
304
305	PRBool onMainThread = PR_TRUE;
306	if (gEventQ)
307	gEventQ->IsOnCurrentThread (&onMainThread);
308
309	PRBool timerStarted = PR_FALSE;
310
311	/* sTimes is null if this call originates from
312	* FactoryDestructor() */
313	if (sTimer != NULL)
314	{
315	LogFlowFunc (("Last VirtualBox instance was released.\n"));
316	LogFlowFunc (("Scheduling server shutdown in %d ms...\n",
317	VBoxSVC_ShutdownDelay));
318
319	/* make sure the previous timer (if any) is stopped;
320	* otherwise RTTimerStart() will definitely fail. */
321	RTTimerStop (sTimer);
322
323	int vrc = RTTimerStart (sTimer, uint64_t (VBoxSVC_ShutdownDelay) * 1000000);
324	AssertRC (vrc);
325	timerStarted = SUCCEEDED (vrc);
326	}
327	else
328	{
329	LogFlowFunc (("Last VirtualBox instance was released "
330	"on XPCOM shutdown.\n"));
331	Assert (onMainThread);
332	}
333
334	if (!timerStarted)
335	{
336	if (!onMainThread)
337	{
338	/* Failed to start the timer, post the shutdown event
339	* manually if not on the main thread alreay. */
340	ShutdownTimer (NULL, NULL);
341	}
342	else
343	{
344	/* Here we come if:
345	*
346	* a) gEventQ is 0 which means either FactoryDestructor() is called
347	* or the IPC/DCONNECT shutdown sequence is initiated by the
348	* XPCOM shutdown routine (NS_ShutdownXPCOM()), which always
349	* happens on the main thread.
350	*
351	* b) gEventQ has reported we're on the main thread. This means
352	* that DestructEventHandler() has been called, but another
353	* client was faster and requested VirtualBox again.
354	*
355	* In either case, there is nothing to do.
356	*
357	* Note: case b) is actually no more valid since we don't
358	* call Release() from DestructEventHandler() in this case
359	* any more. Thus, we assert below.
360	*/
361
362	Assert (gEventQ == NULL);
363	}
364	}
365	}
366
367	return count;
368	}
369
370	class MaybeQuitEvent : public MyEvent
371	{
372	/* called on the main thread */
373	void *handler()
374	{
375	LogFlowFunc (("\n"));
376
377	Assert (RTCritSectIsInitialized (&sLock));
378
379	/* stop accepting GetInstance() requests on other threads during
380	* possible destruction */
381	RTCritSectEnter (&sLock);
382
383	nsrefcnt count = 0;
384
385	/* sInstance is NULL here if it was deleted immediately after
386	* creation due to initialization error. See GetInstance(). */
387	if (sInstance != NULL)
388	{
389	/* Release the guard reference added in GetInstance() */
390	count = sInstance->Release();
391	}
392
393	if (count == 0)
394	{
395	if (gAutoShutdown)
396	{
397	Assert (sInstance == NULL);
398	LogFlowFunc (("Terminating the server process...\n"));
399	/* make it leave the event loop */
400	gKeepRunning = PR_FALSE;
401	}
402	}
403	else
404	{
405	/* This condition is quite rare: a new client will have to
406	* connect after this event has been posted to the main queue
407	* but before it started to process it. */
408	LogFlowFunc (("Destruction is canceled (refcnt=%d).\n", count));
409	}
410
411	RTCritSectLeave (&sLock);
412
413	return NULL;
414	}
415	};
416
417	static void ShutdownTimer (PRTTIMER pTimer, void *pvUser)
418	{
419	NOREF (pTimer);
420	NOREF (pvUser);
421
422	/* A "too late" event is theoretically possible if somebody
423	* manually ended the server after a destruction has been scheduled
424	* and this method was so lucky that it got a chance to run before
425	* the timer was killed. */
426	AssertReturnVoid (gEventQ);
427
428	/* post a quit event to the main queue */
429	MaybeQuitEvent *ev = new MaybeQuitEvent();
430	nsresult rv = ev->postTo (gEventQ);
431	NOREF (rv);
432
433	/* A failure above means we've been already stopped (for example
434	* by Ctrl-C). FactoryDestructor() (NS_ShutdownXPCOM())
435	* will do the job. Nothing to do. */
436	}
437
438	static NS_IMETHODIMP FactoryConstructor()
439	{
440	LogFlowFunc (("\n"));
441
442	/* create a critsect to protect object construction */
443	if (VBOX_FAILURE (RTCritSectInit (&sLock)))
444	return NS_ERROR_OUT_OF_MEMORY;
445
446	int vrc = RTTimerCreateEx (&sTimer, 0, 0, ShutdownTimer, NULL);
447	if (VBOX_FAILURE (vrc))
448	{
449	LogFlowFunc (("Failed to create a timer! (vrc=%Vrc)\n", vrc));
450	return NS_ERROR_FAILURE;
451	}
452
453	return NS_OK;
454	}
455
456	static NS_IMETHODIMP FactoryDestructor()
457	{
458	LogFlowFunc (("\n"));
459
460	RTTimerDestroy (sTimer);
461	sTimer = NULL;
462
463	RTCritSectDelete (&sLock);
464
465	if (sInstance)
466	{
467	/* Either posting a destruction event falied for some reason (most
468	* likely, the quit event has been received before the last release),
469	* or the client has terminated abnormally w/o releasing its
470	* VirtualBox instance (so NS_ShutdownXPCOM() is doing a cleanup).
471	* Release the guard reference we added in GetInstance(). */
472	sInstance->Release();
473	}
474
475	return NS_OK;
476	}
477
478	static nsresult GetInstance (VirtualBox **inst)
479	{
480	LogFlowFunc (("Getting VirtualBox object...\n"));
481
482	RTCritSectEnter (&sLock);
483
484	int rv = NS_OK;
485
486	if (sInstance == 0)
487	{
488	LogFlowFunc (("Creating new VirtualBox object...\n"));
489	sInstance = new VirtualBoxClassFactory();
490	if (sInstance)
491	{
492	/* make an extra AddRef to take the full control
493	* on the VirtualBox destruction (see FinalRelease()) */
494	sInstance->AddRef();
495
496	sInstance->AddRef(); /* protect FinalConstruct() */
497	rv = sInstance->FinalConstruct();
498	printf ("Informational: VirtualBox object created (rc=%08X).\n", rv);
499	if (NS_FAILED (rv))
500	{
501	/* On failure diring VirtualBox initialization, delete it
502	* immediately on the current thread by releasing all
503	* references in order to properly schedule the server
504	* shutdown. Since the object is fully deleted here, there
505	* is a chance to fix the error and request a new
506	* instantiation before the server terminates. However,
507	* the main reason to maintain the shoutdown delay on
508	* failure is to let the front-end completely fetch error
509	* info from a server-side IVirtualBoxErrorInfo object. */
510	sInstance->Release();
511	sInstance->Release();
512	Assert (sInstance == 0);
513	}
514	else
515	{
516	/* On success, make sure the previous timer is stopped to
517	* cancel a scheduled server termination (if any). */
518	RTTimerStop (sTimer);
519	}
520	}
521	else
522	{
523	rv = NS_ERROR_OUT_OF_MEMORY;
524	}
525	}
526	else
527	{
528	LogFlowFunc (("Using existing VirtualBox object...\n"));
529	nsrefcnt count = sInstance->AddRef();
530	Assert (count > 1);
531
532	if (count == 2)
533	{
534	LogFlowFunc (("Another client has requested a reference to VirtualBox, "
535	"canceling detruction...\n"));
536
537	/* make sure the previous timer is stopped */
538	RTTimerStop (sTimer);
539	}
540	}
541
542	*inst = sInstance;
543
544	RTCritSectLeave (&sLock);
545
546	return rv;
547	}
548
549	private:
550
551	/* Don't be confused that sInstance is of the *ClassFactory type. This is
552	* actually a singleton instance (*ClassFactory inherits the singleton
553	* class; we combined them just for "simplicity" and used "static" for
554	* factory methods. *ClassFactory here is necessary for a couple of extra
555	* methods. */
556
557	static VirtualBoxClassFactory *sInstance;
558	static RTCRITSECT sLock;
559
560	static PRTTIMER sTimer;
561	};
562
563	VirtualBoxClassFactory *VirtualBoxClassFactory::sInstance = 0;
564	RTCRITSECT VirtualBoxClassFactory::sLock = {0};
565
566	PRTTIMER VirtualBoxClassFactory::sTimer = NULL;
567
568	NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR_WITH_RC
569	(VirtualBox, VirtualBoxClassFactory::GetInstance)
570
571	////////////////////////////////////////////////////////////////////////////////
572
573	typedef NSFactoryDestructorProcPtr NSFactoryConsructorProcPtr;
574
575	/**
576	* Enhanced module component information structure.
577	*
578	* nsModuleComponentInfo lacks the factory construction callback, here we add
579	* it. This callback is called by NS_NewGenericFactoryEx() after a
580	* nsGenericFactory instance is successfully created.
581	*/
582	struct nsModuleComponentInfoEx : nsModuleComponentInfo
583	{
584	nsModuleComponentInfoEx () {}
585	nsModuleComponentInfoEx (int) {}
586
587	nsModuleComponentInfoEx (
588	const char* aDescription,
589	const nsCID& aCID,
590	const char* aContractID,
591	NSConstructorProcPtr aConstructor,
592	NSRegisterSelfProcPtr aRegisterSelfProc,
593	NSUnregisterSelfProcPtr aUnregisterSelfProc,
594	NSFactoryDestructorProcPtr aFactoryDestructor,
595	NSGetInterfacesProcPtr aGetInterfacesProc,
596	NSGetLanguageHelperProcPtr aGetLanguageHelperProc,
597	nsIClassInfo ** aClassInfoGlobal,
598	PRUint32 aFlags,
599	NSFactoryConsructorProcPtr aFactoryConstructor)
600	{
601	mDescription = aDescription;
602	mCID = aCID;
603	mContractID = aContractID;
604	mConstructor = aConstructor;
605	mRegisterSelfProc = aRegisterSelfProc;
606	mUnregisterSelfProc = aUnregisterSelfProc;
607	mFactoryDestructor = aFactoryDestructor;
608	mGetInterfacesProc = aGetInterfacesProc;
609	mGetLanguageHelperProc = aGetLanguageHelperProc;
610	mClassInfoGlobal = aClassInfoGlobal;
611	mFlags = aFlags;
612	mFactoryConstructor = aFactoryConstructor;
613	}
614
615	/** (optional) Factory Construction Callback */
616	NSFactoryConsructorProcPtr mFactoryConstructor;
617	};
618
619	////////////////////////////////////////////////////////////////////////////////
620
621	static const nsModuleComponentInfoEx components[] =
622	{
623	nsModuleComponentInfoEx (
624	"VirtualBox component",
625	(nsCID) NS_VIRTUALBOX_CID,
626	NS_VIRTUALBOX_CONTRACTID,
627	VirtualBoxConstructor, // constructor funcion
628	NULL, // registration function
629	NULL, // deregistration function
630	VirtualBoxClassFactory::FactoryDestructor, // factory destructor function
631	NS_CI_INTERFACE_GETTER_NAME(VirtualBox),
632	NULL, // language helper
633	&NS_CLASSINFO_NAME(VirtualBox),
634	0, // flags
635	VirtualBoxClassFactory::FactoryConstructor // factory constructor function
636	)
637	};
638
639	/////////////////////////////////////////////////////////////////////////////
640
641	/**
642	* Extends NS_NewGenericFactory() by immediately calling
643	* nsModuleComponentInfoEx::mFactoryConstructor before returning to the
644	* caller.
645	*/
646	nsresult
647	NS_NewGenericFactoryEx (nsIGenericFactory **result,
648	const nsModuleComponentInfoEx *info)
649	{
650	AssertReturn (result, NS_ERROR_INVALID_POINTER);
651
652	nsresult rv = NS_NewGenericFactory (result, info);
653	if (NS_SUCCEEDED (rv) && info && info->mFactoryConstructor)
654	{
655	rv = info->mFactoryConstructor();
656	if (NS_FAILED (rv))
657	NS_RELEASE (*result);
658	}
659
660	return rv;
661	}
662
663	/////////////////////////////////////////////////////////////////////////////
664
665	/**
666	* Hhelper function to register self components upon start-up
667	* of the out-of-proc server.
668	*/
669	static nsresult
670	RegisterSelfComponents (nsIComponentRegistrar *registrar,
671	const nsModuleComponentInfoEx *components,
672	PRUint32 count)
673	{
674	nsresult rc = NS_OK;
675	const nsModuleComponentInfoEx *info = components;
676	for (PRUint32 i = 0; i < count && NS_SUCCEEDED (rc); i++, info++)
677	{
678	/* skip components w/o a constructor */
679	if (!info->mConstructor) continue;
680	/* create a new generic factory for a component and register it */
681	nsIGenericFactory *factory;
682	rc = NS_NewGenericFactoryEx (&factory, info);
683	if (NS_SUCCEEDED (rc))
684	{
685	rc = registrar->RegisterFactory (info->mCID,
686	info->mDescription,
687	info->mContractID,
688	factory);
689	factory->Release();
690	}
691	}
692	return rc;
693	}
694
695	/////////////////////////////////////////////////////////////////////////////
696
697	static ipcIService *gIpcServ = nsnull;
698	static char *pszPidFile = NULL;
699
700	class ForceQuitEvent : public MyEvent
701	{
702	void *handler()
703	{
704	LogFlowFunc (("\n"));
705
706	gKeepRunning = PR_FALSE;
707
708	if (pszPidFile)
709	RTFileDelete(pszPidFile);
710
711	return NULL;
712	}
713	};
714
715	static void signal_handler (int sig)
716	{
717	if (gEventQ && gKeepRunning)
718	{
719	/* post a quit event to the queue */
720	ForceQuitEvent *ev = new ForceQuitEvent();
721	ev->postTo (gEventQ);
722	}
723	}
724
725	#if defined(USE_BACKTRACE)
726	/**
727	* the signal handler that prints out a backtrace of the call stack.
728	* the code is taken from http://www.linuxjournal.com/article/6391.
729	*/
730	static void bt_sighandler (int sig, siginfo_t info, void secret)
731	{
732
733	void *trace[16];
734	char messages = (char )NULL;
735	int i, trace_size = 0;
736	ucontext_t uc = (ucontext_t )secret;
737
738	// Do something useful with siginfo_t
739	if (sig == SIGSEGV)
740	Log (("Got signal %d, faulty address is %p, from %p\n",
741	sig, info->si_addr, uc->uc_mcontext.gregs[REG_PC]));
742	else
743	Log (("Got signal %d\n", sig));
744
745	trace_size = backtrace (trace, 16);
746	// overwrite sigaction with caller's address
747	trace[1] = (void *) uc->uc_mcontext.gregs [REG_PC];
748
749	messages = backtrace_symbols (trace, trace_size);
750	// skip first stack frame (points here)
751	Log (("[bt] Execution path:\n"));
752	for (i = 1; i < trace_size; ++i)
753	Log (("[bt] %s\n", messages[i]));
754
755	exit (0);
756	}
757	#endif
758
759	int main (int argc, char **argv)
760	{
761	const struct option options[] =
762	{
763	{ "automate", no_argument, NULL, 'a' },
764	#ifdef RT_OS_DARWIN
765	{ "auto-shutdown", no_argument, NULL, 'A' },
766	#endif
767	{ "daemonize", no_argument, NULL, 'd' },
768	{ "pidfile", required_argument, NULL, 'p' },
769	#ifdef RT_OS_DARWIN
770	{ "pipe", required_argument, NULL, 'P' },
771	#endif
772	{ NULL, 0, NULL, 0 }
773	};
774	int c;
775
776	bool fDaemonize = false;
777	#ifndef RT_OS_OS2
778	static int daemon_pipe_fds[2] = {-1, -1};
779	#endif
780
781	for (;;)
782	{
783	c = getopt_long(argc, argv, "", options, NULL);
784	if (c == -1)
785	break;
786	switch (c)
787	{
788	case 'a':
789	{
790	/* --automate mode means we are started by XPCOM on
791	* demand. Daemonize ourselves and activate
792	* auto-shutdown. */
793	gAutoShutdown = true;
794	fDaemonize = true;
795	break;
796	}
797
798	#ifdef RT_OS_DARWIN
799	/* Used together with '-P', see below. Internal use only. */
800	case 'A':
801	{
802	gAutoShutdown = true;
803	break;
804	}
805	#endif
806
807	case 'd':
808	{
809	fDaemonize = true;
810	break;
811	}
812
813	case 'p':
814	{
815	pszPidFile = optarg;
816	break;
817	}
818
819	#ifdef RT_OS_DARWIN
820	/* we need to exec on darwin, this is just an internal
821	* hack for passing the pipe fd along to the final child. */
822	case 'P':
823	{
824	daemon_pipe_fds[1] = atoi(optarg);
825	break;
826	}
827	#endif
828
829	default:
830	{
831	/* exit on invalid options */
832	return 1;
833	}
834	}
835	}
836
837	static RTFILE pidFile = NIL_RTFILE;
838
839	#ifdef RT_OS_OS2
840
841	/* nothing to do here, the process is supposed to be already
842	* started daemonized when it is necessary */
843	NOREF(fDaemonize);
844
845	#else // ifdef RT_OS_OS2
846
847	if (fDaemonize)
848	{
849	/* create a pipe for communication between child and parent */
850	if (pipe(daemon_pipe_fds) < 0)
851	{
852	printf("ERROR: pipe() failed (errno = %d)\n", errno);
853	return 1;
854	}
855
856	pid_t childpid = fork();
857	if (childpid == -1)
858	{
859	printf("ERROR: fork() failed (errno = %d)\n", errno);
860	return 1;
861	}
862
863	if (childpid != 0)
864	{
865	/* we're the parent process */
866	bool fSuccess = false;
867
868	/* close the writing end of the pipe */
869	close(daemon_pipe_fds[1]);
870
871	/* try to read a message from the pipe */
872	char msg[10] = {0}; /* initialize so it's NULL terminated */
873	if (read(daemon_pipe_fds[0], msg, sizeof(msg)) > 0)
874	{
875	if (strcmp(msg, "READY") == 0)
876	fSuccess = true;
877	else
878	printf ("ERROR: Unknown message from child "
879	"process (%s)\n", msg);
880	}
881	else
882	printf ("ERROR: 0 bytes read from child process\n");
883
884	/* close the reading end of the pipe as well and exit */
885	close(daemon_pipe_fds[0]);
886	return fSuccess ? 0 : 1;
887	}
888	/* we're the child process */
889
890	/* Create a new SID for the child process */
891	pid_t sid = setsid();
892	if (sid < 0)
893	{
894	printf("ERROR: setsid() failed (errno = %d)\n", errno);
895	return 1;
896	}
897
898	/* Need to do another for to get rid of the session leader status.
899	* Otherwise any accidentally opened tty will automatically become a
900	* controlling tty for the daemon process. */
901	childpid = fork();
902	if (childpid == -1)
903	{
904	printf("ERROR: second fork() failed (errno = %d)\n", errno);
905	return 1;
906	}
907
908	if (childpid != 0)
909	{
910	/* we're the parent process, just a dummy so terminate now */
911	exit(0);
912	}
913
914	/* Redirect standard i/o streams to /dev/null */
915	if (daemon_pipe_fds[0] > 2)
916	{
917	freopen ("/dev/null", "r", stdin);
918	freopen ("/dev/null", "w", stdout);
919	freopen ("/dev/null", "w", stderr);
920	}
921
922	/* close the reading end of the pipe */
923	close(daemon_pipe_fds[0]);
924
925	# ifdef RT_OS_DARWIN
926	/*
927	* On leopard we're no longer allowed to use some of the core API's
928	* after forking - this will cause us to hit an int3.
929	* So, we'll have to execv VBoxSVC once again and hand it the pipe
930	* and all other relevant options.
931	*/
932	const char *apszArgs[7];
933	unsigned i = 0;
934	apszArgs[i++] = argv[0];
935	apszArgs[i++] = "--pipe";
936	char szPipeArg[32];
937	RTStrPrintf (szPipeArg, sizeof (szPipeArg), "%d", daemon_pipe_fds[1]);
938	apszArgs[i++] = szPipeArg;
939	if (pszPidFile)
940	{
941	apszArgs[i++] = "--pidfile";
942	apszArgs[i++] = pszPidFile;
943	}
944	if (gAutoShutdown)
945	apszArgs[i++] = "--auto-shutdown";
946	apszArgs[i++] = NULL; Assert(i <= RT_ELEMENTS(apszArgs));
947	execv (apszArgs[0], (char * const *)apszArgs);
948	exit (0);
949	# endif
950	}
951
952	#endif // ifdef RT_OS_OS2
953
954	#if defined(USE_BACKTRACE)
955	{
956	/* install our signal handler to backtrace the call stack */
957	struct sigaction sa;
958	sa.sa_sigaction = bt_sighandler;
959	sigemptyset (&sa.sa_mask);
960	sa.sa_flags = SA_RESTART \| SA_SIGINFO;
961	sigaction (SIGSEGV, &sa, NULL);
962	sigaction (SIGBUS, &sa, NULL);
963	sigaction (SIGUSR1, &sa, NULL);
964	}
965	#endif
966
967	/*
968	* Initialize the VBox runtime without loading
969	* the support driver
970	*/
971	RTR3Init(false);
972
973	nsresult rc;
974
975	do
976	{
977	rc = com::Initialize();
978	if (NS_FAILED (rc))
979	{
980	printf ("ERROR: Failed to initialize XPCOM! (rc=%08X)\n", rc);
981	break;
982	}
983
984	nsCOMPtr <nsIComponentRegistrar> registrar;
985	rc = NS_GetComponentRegistrar (getter_AddRefs (registrar));
986	if (NS_FAILED (rc))
987	{
988	printf ("ERROR: Failed to get component registrar! (rc=%08X)\n", rc);
989	break;
990	}
991
992	registrar->AutoRegister (nsnull);
993	rc = RegisterSelfComponents (registrar, components,
994	NS_ARRAY_LENGTH (components));
995	if (NS_FAILED (rc))
996	{
997	printf ("ERROR: Failed to register server components! (rc=%08X)\n", rc);
998	break;
999	}
1000
1001	/* get the main thread's event queue (afaik, the dconnect service always
1002	* gets created upon XPCOM startup, so it will use the main (this)
1003	* thread's event queue to receive IPC events) */
1004	rc = NS_GetMainEventQ (&gEventQ);
1005	if (NS_FAILED (rc))
1006	{
1007	printf ("ERROR: Failed to get the main event queue! (rc=%08X)\n", rc);
1008	break;
1009	}
1010
1011	nsCOMPtr<ipcIService> ipcServ (do_GetService(IPC_SERVICE_CONTRACTID, &rc));
1012	if (NS_FAILED (rc))
1013	{
1014	printf ("ERROR: Failed to get IPC service! (rc=%08X)\n", rc);
1015	break;
1016	}
1017
1018	NS_ADDREF (gIpcServ = ipcServ);
1019
1020	LogFlowFunc (("Will use \"%s\" as server name.\n", VBOXSVC_IPC_NAME));
1021
1022	rc = gIpcServ->AddName (VBOXSVC_IPC_NAME);
1023	if (NS_FAILED (rc))
1024	{
1025	printf ("ERROR: Failed to register VirtualBoxServer! (rc=%08X)\n", rc);
1026	NS_RELEASE (gIpcServ);
1027	break;
1028	}
1029
1030	{
1031	/* setup signal handling to convert some signals to a quit event */
1032	struct sigaction sa;
1033	sa.sa_handler = signal_handler;
1034	sigemptyset (&sa.sa_mask);
1035	sa.sa_flags = 0;
1036	sigaction (SIGINT, &sa, NULL);
1037	sigaction (SIGQUIT, &sa, NULL);
1038	sigaction (SIGTERM, &sa, NULL);
1039	sigaction (SIGTRAP, &sa, NULL);
1040	}
1041
1042	{
1043	char szBuf[80];
1044	int iSize;
1045
1046	iSize = snprintf (szBuf, sizeof(szBuf),
1047	"innotek VirtualBox XPCOM Server Version "
1048	VBOX_VERSION_STRING);
1049	for (int i=iSize; i>0; i--)
1050	putchar('*');
1051	printf ("\n%s\n", szBuf);
1052	printf ("(C) 2004-2008 innotek GmbH\n"
1053	"All rights reserved.\n");
1054	#ifdef DEBUG
1055	printf ("Debug version.\n");
1056	#endif
1057	#if 0
1058	/* in my opinion two lines enclosing the text look better */
1059	for (int i=iSize; i>0; i--)
1060	putchar('*');
1061	putchar('\n');
1062	#endif
1063	}
1064
1065	#ifndef RT_OS_OS2
1066	if (daemon_pipe_fds[1] >= 0)
1067	{
1068	printf ("\nStarting event loop....\n[send TERM signal to quit]\n");
1069	/* now we're ready, signal the parent process */
1070	write(daemon_pipe_fds[1], "READY", strlen("READY"));
1071	}
1072	else
1073	#endif
1074	{
1075	printf ("\nStarting event loop....\n[press Ctrl-C to quit]\n");
1076	}
1077
1078	if (pszPidFile)
1079	{
1080	char szBuf[32];
1081	const char *lf = "\n";
1082	RTFileOpen(&pidFile, pszPidFile, RTFILE_O_WRITE \| RTFILE_O_CREATE_REPLACE);
1083	RTStrFormatNumber(szBuf, getpid(), 10, 0, 0, 0);
1084	RTFileWrite(pidFile, szBuf, strlen(szBuf), NULL);
1085	RTFileWrite(pidFile, lf, strlen(lf), NULL);
1086	RTFileClose(pidFile);
1087	}
1088
1089	PLEvent *ev;
1090	while (gKeepRunning)
1091	{
1092	gEventQ->WaitForEvent (&ev);
1093	gEventQ->HandleEvent (ev);
1094	}
1095
1096	gIpcServ->RemoveName (VBOXSVC_IPC_NAME);
1097
1098	/* stop accepting new events */
1099	gEventQ->StopAcceptingEvents();
1100
1101	/* process any remaining events */
1102	gEventQ->ProcessPendingEvents();
1103
1104	printf ("Terminated event loop.\n");
1105	}
1106	while (0); // this scopes the nsCOMPtrs
1107
1108	NS_IF_RELEASE (gIpcServ);
1109	NS_IF_RELEASE (gEventQ);
1110
1111	/* no nsCOMPtrs are allowed to be alive when you call com::Shutdown(). */
1112
1113	LogFlowFunc (("Calling com::Shutdown()...\n"));
1114	rc = com::Shutdown();
1115	LogFlowFunc (("Finished com::Shutdown() (rc=%08X)\n", rc));
1116
1117	if (NS_FAILED (rc))
1118	printf ("ERROR: Failed to shutdown XPCOM! (rc=%08X)\n", rc);
1119
1120	printf ("XPCOM server has shutdown.\n");
1121
1122	if (pszPidFile)
1123	{
1124	RTFileDelete(pszPidFile);
1125	}
1126
1127	#ifndef RT_OS_OS2
1128	if (daemon_pipe_fds[1] >= 0)
1129	{
1130	/* close writing end of the pipe as well */
1131	close(daemon_pipe_fds[1]);
1132	}
1133	#endif
1134
1135	return 0;
1136	}

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

source: vbox/trunk/src/VBox/Main/linux/server.cpp@ 7692

Download in other formats: