VirtualBox

source: vbox/trunk/src/VBox/Main/src-server/xpcom/server.cpp@ 69474

Last change on this file since 69474 was 65420, checked in by vboxsync, 8 years ago

VBoxSVC: temporary allow release assertions to terminate VBoxSVC

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File size: 31.0 KB
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1/* $Id: server.cpp 65420 2017-01-24 12:08:25Z vboxsync $ */
2/** @file
3 * XPCOM server process (VBoxSVC) start point.
4 */
5
6/*
7 * Copyright (C) 2004-2017 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#include <ipcIService.h>
19#include <ipcCID.h>
20
21#include <nsIComponentRegistrar.h>
22
23#include <nsGenericFactory.h>
24
25#include "prio.h"
26#include "prproces.h"
27
28#include "server.h"
29
30#include "Logging.h"
31
32#include <VBox/param.h>
33
34#include <iprt/buildconfig.h>
35#include <iprt/initterm.h>
36#include <iprt/critsect.h>
37#include <iprt/getopt.h>
38#include <iprt/message.h>
39#include <iprt/string.h>
40#include <iprt/stream.h>
41#include <iprt/path.h>
42#include <iprt/timer.h>
43#include <iprt/env.h>
44
45#include <signal.h> // for the signal handler
46#include <stdlib.h>
47#include <unistd.h>
48#include <errno.h>
49#include <fcntl.h>
50#include <sys/stat.h>
51#include <sys/resource.h>
52
53/////////////////////////////////////////////////////////////////////////////
54// VirtualBox component instantiation
55/////////////////////////////////////////////////////////////////////////////
56
57#include <nsIGenericFactory.h>
58#include <VirtualBox_XPCOM.h>
59
60#include "VBox/com/NativeEventQueue.h"
61
62#include "ApplianceImpl.h"
63#include "AudioAdapterImpl.h"
64#include "BandwidthControlImpl.h"
65#include "BandwidthGroupImpl.h"
66#include "NetworkServiceRunner.h"
67#include "DHCPServerImpl.h"
68#include "GuestOSTypeImpl.h"
69#include "HostImpl.h"
70#include "HostNetworkInterfaceImpl.h"
71#include "MachineImpl.h"
72#include "MediumFormatImpl.h"
73#include "MediumImpl.h"
74#include "NATEngineImpl.h"
75#include "NetworkAdapterImpl.h"
76#include "ParallelPortImpl.h"
77#include "ProgressProxyImpl.h"
78#include "SerialPortImpl.h"
79#include "SharedFolderImpl.h"
80#include "SnapshotImpl.h"
81#include "StorageControllerImpl.h"
82#include "SystemPropertiesImpl.h"
83#include "USBControllerImpl.h"
84#include "USBDeviceFiltersImpl.h"
85#include "VFSExplorerImpl.h"
86#include "VirtualBoxImpl.h"
87#include "VRDEServerImpl.h"
88#ifdef VBOX_WITH_USB
89# include "HostUSBDeviceImpl.h"
90# include "USBDeviceFilterImpl.h"
91# include "USBDeviceImpl.h"
92#endif
93#ifdef VBOX_WITH_EXTPACK
94# include "ExtPackManagerImpl.h"
95#endif
96# include "NATNetworkImpl.h"
97
98// This needs to stay - it is needed by the service registration below, and
99// is defined in the automatically generated VirtualBoxWrap.cpp
100extern nsIClassInfo *NS_CLASSINFO_NAME(VirtualBoxWrap);
101NS_DECL_CI_INTERFACE_GETTER(VirtualBoxWrap)
102
103////////////////////////////////////////////////////////////////////////////////
104
105static bool gAutoShutdown = false;
106/** Delay before shutting down the VirtualBox server after the last
107 * VirtualBox instance is released, in ms */
108static uint32_t gShutdownDelayMs = 5000;
109
110static com::NativeEventQueue *gEventQ = NULL;
111static PRBool volatile gKeepRunning = PR_TRUE;
112static PRBool volatile gAllowSigUsrQuit = PR_TRUE;
113
114/////////////////////////////////////////////////////////////////////////////
115
116/**
117 * VirtualBox class factory that destroys the created instance right after
118 * the last reference to it is released by the client, and recreates it again
119 * when necessary (so VirtualBox acts like a singleton object).
120 */
121class VirtualBoxClassFactory : public VirtualBox
122{
123public:
124
125 virtual ~VirtualBoxClassFactory()
126 {
127 LogFlowFunc(("Deleting VirtualBox...\n"));
128
129 FinalRelease();
130 sInstance = NULL;
131
132 LogFlowFunc(("VirtualBox object deleted.\n"));
133 RTPrintf("Informational: VirtualBox object deleted.\n");
134 }
135
136 NS_IMETHOD_(nsrefcnt) Release()
137 {
138 /* we overload Release() to guarantee the VirtualBox destructor is
139 * always called on the main thread */
140
141 nsrefcnt count = VirtualBox::Release();
142
143 if (count == 1)
144 {
145 /* the last reference held by clients is being released
146 * (see GetInstance()) */
147
148 bool onMainThread = RTThreadIsMain(RTThreadSelf());
149 PRBool timerStarted = PR_FALSE;
150
151 /* sTimer is null if this call originates from FactoryDestructor()*/
152 if (sTimer != NULL)
153 {
154 LogFlowFunc(("Last VirtualBox instance was released.\n"));
155 LogFlowFunc(("Scheduling server shutdown in %u ms...\n",
156 gShutdownDelayMs));
157
158 /* make sure the previous timer (if any) is stopped;
159 * otherwise RTTimerStart() will definitely fail. */
160 RTTimerLRStop(sTimer);
161
162 int vrc = RTTimerLRStart(sTimer, gShutdownDelayMs * RT_NS_1MS_64);
163 AssertRC(vrc);
164 timerStarted = !!(SUCCEEDED(vrc));
165 }
166 else
167 {
168 LogFlowFunc(("Last VirtualBox instance was released "
169 "on XPCOM shutdown.\n"));
170 Assert(onMainThread);
171 }
172
173 gAllowSigUsrQuit = PR_TRUE;
174
175 if (!timerStarted)
176 {
177 if (!onMainThread)
178 {
179 /* Failed to start the timer, post the shutdown event
180 * manually if not on the main thread already. */
181 ShutdownTimer(NULL, NULL, 0);
182 }
183 else
184 {
185 /* Here we come if:
186 *
187 * a) gEventQ is 0 which means either FactoryDestructor() is called
188 * or the IPC/DCONNECT shutdown sequence is initiated by the
189 * XPCOM shutdown routine (NS_ShutdownXPCOM()), which always
190 * happens on the main thread.
191 *
192 * b) gEventQ has reported we're on the main thread. This means
193 * that DestructEventHandler() has been called, but another
194 * client was faster and requested VirtualBox again.
195 *
196 * In either case, there is nothing to do.
197 *
198 * Note: case b) is actually no more valid since we don't
199 * call Release() from DestructEventHandler() in this case
200 * any more. Thus, we assert below.
201 */
202
203 Assert(!gEventQ);
204 }
205 }
206 }
207
208 return count;
209 }
210
211 class MaybeQuitEvent : public NativeEvent
212 {
213 public:
214 MaybeQuitEvent() :
215 m_fSignal(false)
216 {
217 }
218
219 MaybeQuitEvent(bool fSignal) :
220 m_fSignal(fSignal)
221 {
222 }
223
224 private:
225 /* called on the main thread */
226 void *handler()
227 {
228 LogFlowFuncEnter();
229
230 Assert(RTCritSectIsInitialized(&sLock));
231
232 /* stop accepting GetInstance() requests on other threads during
233 * possible destruction */
234 RTCritSectEnter(&sLock);
235
236 nsrefcnt count = 1;
237
238 /* sInstance is NULL here if it was deleted immediately after
239 * creation due to initialization error. See GetInstance(). */
240 if (sInstance != NULL)
241 {
242 /* Safe way to get current refcount is by first increasing and
243 * then decreasing. Keep in mind that the Release is overloaded
244 * (see VirtualBoxClassFactory::Release) and will start the
245 * timer again if the returned count is 1. It won't do harm,
246 * but also serves no purpose, so stop it ASAP. */
247 sInstance->AddRef();
248 count = sInstance->Release();
249 if (count == 1)
250 {
251 RTTimerLRStop(sTimer);
252 /* Release the guard reference added in GetInstance() */
253 sInstance->Release();
254 }
255 }
256
257 if (count == 1)
258 {
259 if (gAutoShutdown || m_fSignal)
260 {
261 Assert(sInstance == NULL);
262 LogFlowFunc(("Terminating the server process...\n"));
263 /* make it leave the event loop */
264 gKeepRunning = PR_FALSE;
265 }
266 else
267 LogFlowFunc(("No automatic shutdown.\n"));
268 }
269 else
270 {
271 /* This condition is quite rare: a new client happened to
272 * connect after this event has been posted to the main queue
273 * but before it started to process it. */
274 LogRel(("Destruction is canceled (refcnt=%d).\n", count));
275 }
276
277 RTCritSectLeave(&sLock);
278
279 LogFlowFuncLeave();
280 return NULL;
281 }
282
283 bool m_fSignal;
284 };
285
286 static DECLCALLBACK(void) ShutdownTimer(RTTIMERLR hTimerLR, void *pvUser, uint64_t /*iTick*/)
287 {
288 NOREF(hTimerLR);
289 NOREF(pvUser);
290
291 /* A "too late" event is theoretically possible if somebody
292 * manually ended the server after a destruction has been scheduled
293 * and this method was so lucky that it got a chance to run before
294 * the timer was killed. */
295 com::NativeEventQueue *q = gEventQ;
296 AssertReturnVoid(q);
297
298 /* post a quit event to the main queue */
299 MaybeQuitEvent *ev = new MaybeQuitEvent(false /* fSignal */);
300 if (!q->postEvent(ev))
301 delete ev;
302
303 /* A failure above means we've been already stopped (for example
304 * by Ctrl-C). FactoryDestructor() (NS_ShutdownXPCOM())
305 * will do the job. Nothing to do. */
306 }
307
308 static NS_IMETHODIMP FactoryConstructor()
309 {
310 LogFlowFunc(("\n"));
311
312 /* create a critsect to protect object construction */
313 if (RT_FAILURE(RTCritSectInit(&sLock)))
314 return NS_ERROR_OUT_OF_MEMORY;
315
316 int vrc = RTTimerLRCreateEx(&sTimer, 0, 0, ShutdownTimer, NULL);
317 if (RT_FAILURE(vrc))
318 {
319 LogFlowFunc(("Failed to create a timer! (vrc=%Rrc)\n", vrc));
320 return NS_ERROR_FAILURE;
321 }
322
323 return NS_OK;
324 }
325
326 static NS_IMETHODIMP FactoryDestructor()
327 {
328 LogFlowFunc(("\n"));
329
330 RTTimerLRDestroy(sTimer);
331 sTimer = NULL;
332
333 if (sInstance != NULL)
334 {
335 /* Either posting a destruction event failed for some reason (most
336 * likely, the quit event has been received before the last release),
337 * or the client has terminated abnormally w/o releasing its
338 * VirtualBox instance (so NS_ShutdownXPCOM() is doing a cleanup).
339 * Release the guard reference we added in GetInstance(). */
340 sInstance->Release();
341 }
342
343 /* Destroy lock after releasing the VirtualBox instance, otherwise
344 * there are races with cleanup. */
345 RTCritSectDelete(&sLock);
346
347 return NS_OK;
348 }
349
350 static nsresult GetInstance(VirtualBox **inst)
351 {
352 LogFlowFunc(("Getting VirtualBox object...\n"));
353
354 RTCritSectEnter(&sLock);
355
356 if (!gKeepRunning)
357 {
358 LogFlowFunc(("Process termination requested first. Refusing.\n"));
359
360 RTCritSectLeave(&sLock);
361
362 /* this rv is what CreateInstance() on the client side returns
363 * when the server process stops accepting events. Do the same
364 * here. The client wrapper should attempt to start a new process in
365 * response to a failure from us. */
366 return NS_ERROR_ABORT;
367 }
368
369 nsresult rv = NS_OK;
370
371 if (sInstance == NULL)
372 {
373 LogFlowFunc(("Creating new VirtualBox object...\n"));
374 sInstance = new VirtualBoxClassFactory();
375 if (sInstance != NULL)
376 {
377 /* make an extra AddRef to take the full control
378 * on the VirtualBox destruction (see FinalRelease()) */
379 sInstance->AddRef();
380
381 sInstance->AddRef(); /* protect FinalConstruct() */
382 rv = sInstance->FinalConstruct();
383 RTPrintf("Informational: VirtualBox object created (rc=%Rhrc).\n", rv);
384 if (NS_FAILED(rv))
385 {
386 /* On failure diring VirtualBox initialization, delete it
387 * immediately on the current thread by releasing all
388 * references in order to properly schedule the server
389 * shutdown. Since the object is fully deleted here, there
390 * is a chance to fix the error and request a new
391 * instantiation before the server terminates. However,
392 * the main reason to maintain the shutdown delay on
393 * failure is to let the front-end completely fetch error
394 * info from a server-side IVirtualBoxErrorInfo object. */
395 sInstance->Release();
396 sInstance->Release();
397 Assert(sInstance == NULL);
398 }
399 else
400 {
401 /* On success, make sure the previous timer is stopped to
402 * cancel a scheduled server termination (if any). */
403 gAllowSigUsrQuit = PR_FALSE;
404 RTTimerLRStop(sTimer);
405 }
406 }
407 else
408 {
409 rv = NS_ERROR_OUT_OF_MEMORY;
410 }
411 }
412 else
413 {
414 LogFlowFunc(("Using existing VirtualBox object...\n"));
415 nsrefcnt count = sInstance->AddRef();
416 Assert(count > 1);
417
418 if (count >= 2)
419 {
420 LogFlowFunc(("Another client has requested a reference to VirtualBox, canceling destruction...\n"));
421
422 /* make sure the previous timer is stopped */
423 gAllowSigUsrQuit = PR_FALSE;
424 RTTimerLRStop(sTimer);
425 }
426 }
427
428 *inst = sInstance;
429
430 RTCritSectLeave(&sLock);
431
432 return rv;
433 }
434
435private:
436
437 /* Don't be confused that sInstance is of the *ClassFactory type. This is
438 * actually a singleton instance (*ClassFactory inherits the singleton
439 * class; we combined them just for "simplicity" and used "static" for
440 * factory methods. *ClassFactory here is necessary for a couple of extra
441 * methods. */
442
443 static VirtualBoxClassFactory *sInstance;
444 static RTCRITSECT sLock;
445
446 static RTTIMERLR sTimer;
447};
448
449VirtualBoxClassFactory *VirtualBoxClassFactory::sInstance = NULL;
450RTCRITSECT VirtualBoxClassFactory::sLock;
451
452RTTIMERLR VirtualBoxClassFactory::sTimer = NIL_RTTIMERLR;
453
454NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR_WITH_RC(VirtualBox, VirtualBoxClassFactory::GetInstance)
455
456////////////////////////////////////////////////////////////////////////////////
457
458typedef NSFactoryDestructorProcPtr NSFactoryConstructorProcPtr;
459
460/**
461 * Enhanced module component information structure.
462 *
463 * nsModuleComponentInfo lacks the factory construction callback, here we add
464 * it. This callback is called straight after a nsGenericFactory instance is
465 * successfully created in RegisterSelfComponents.
466 */
467struct nsModuleComponentInfoPlusFactoryConstructor
468{
469 /** standard module component information */
470 const nsModuleComponentInfo *mpModuleComponentInfo;
471 /** (optional) Factory Construction Callback */
472 NSFactoryConstructorProcPtr mFactoryConstructor;
473};
474
475/////////////////////////////////////////////////////////////////////////////
476
477/**
478 * Helper function to register self components upon start-up
479 * of the out-of-proc server.
480 */
481static nsresult
482RegisterSelfComponents(nsIComponentRegistrar *registrar,
483 const nsModuleComponentInfoPlusFactoryConstructor *aComponents,
484 PRUint32 count)
485{
486 nsresult rc = NS_OK;
487 const nsModuleComponentInfoPlusFactoryConstructor *info = aComponents;
488 for (PRUint32 i = 0; i < count && NS_SUCCEEDED(rc); i++, info++)
489 {
490 /* skip components w/o a constructor */
491 if (!info->mpModuleComponentInfo->mConstructor)
492 continue;
493 /* create a new generic factory for a component and register it */
494 nsIGenericFactory *factory;
495 rc = NS_NewGenericFactory(&factory, info->mpModuleComponentInfo);
496 if (NS_SUCCEEDED(rc) && info->mFactoryConstructor)
497 {
498 rc = info->mFactoryConstructor();
499 if (NS_FAILED(rc))
500 NS_RELEASE(factory);
501 }
502 if (NS_SUCCEEDED(rc))
503 {
504 rc = registrar->RegisterFactory(info->mpModuleComponentInfo->mCID,
505 info->mpModuleComponentInfo->mDescription,
506 info->mpModuleComponentInfo->mContractID,
507 factory);
508 NS_RELEASE(factory);
509 }
510 }
511 return rc;
512}
513
514/////////////////////////////////////////////////////////////////////////////
515
516static ipcIService *gIpcServ = nsnull;
517static const char *g_pszPidFile = NULL;
518
519class ForceQuitEvent : public NativeEvent
520{
521 void *handler()
522 {
523 LogFlowFunc(("\n"));
524
525 gKeepRunning = PR_FALSE;
526
527 if (g_pszPidFile)
528 RTFileDelete(g_pszPidFile);
529
530 return NULL;
531 }
532};
533
534static void signal_handler(int sig)
535{
536 com::NativeEventQueue *q = gEventQ;
537 if (q && gKeepRunning)
538 {
539 if (sig == SIGUSR1)
540 {
541 if (gAllowSigUsrQuit)
542 {
543 /* terminate the server process if it is idle */
544 VirtualBoxClassFactory::MaybeQuitEvent *ev = new VirtualBoxClassFactory::MaybeQuitEvent(true /* fSignal */);
545 if (!q->postEvent(ev))
546 delete ev;
547 }
548 /* else do nothing */
549 }
550 else
551 {
552 /* post a force quit event to the queue */
553 ForceQuitEvent *ev = new ForceQuitEvent();
554 if (!q->postEvent(ev))
555 delete ev;
556 }
557 }
558}
559
560static nsresult vboxsvcSpawnDaemonByReExec(const char *pszPath, bool fAutoShutdown, const char *pszPidFile)
561{
562 PRFileDesc *readable = nsnull, *writable = nsnull;
563 PRProcessAttr *attr = nsnull;
564 nsresult rv = NS_ERROR_FAILURE;
565 PRFileDesc *devNull;
566 unsigned args_index = 0;
567 // The ugly casts are necessary because the PR_CreateProcessDetached has
568 // a const array of writable strings as a parameter. It won't write. */
569 char * args[1 + 1 + 2 + 1];
570 args[args_index++] = (char *)pszPath;
571 if (fAutoShutdown)
572 args[args_index++] = (char *)"--auto-shutdown";
573 if (pszPidFile)
574 {
575 args[args_index++] = (char *)"--pidfile";
576 args[args_index++] = (char *)pszPidFile;
577 }
578 args[args_index++] = 0;
579
580 // Use a pipe to determine when the daemon process is in the position
581 // to actually process requests. The daemon will write "READY" to the pipe.
582 if (PR_CreatePipe(&readable, &writable) != PR_SUCCESS)
583 goto end;
584 PR_SetFDInheritable(writable, PR_TRUE);
585
586 attr = PR_NewProcessAttr();
587 if (!attr)
588 goto end;
589
590 if (PR_ProcessAttrSetInheritableFD(attr, writable, VBOXSVC_STARTUP_PIPE_NAME) != PR_SUCCESS)
591 goto end;
592
593 devNull = PR_Open("/dev/null", PR_RDWR, 0);
594 if (!devNull)
595 goto end;
596
597 PR_ProcessAttrSetStdioRedirect(attr, PR_StandardInput, devNull);
598 PR_ProcessAttrSetStdioRedirect(attr, PR_StandardOutput, devNull);
599 PR_ProcessAttrSetStdioRedirect(attr, PR_StandardError, devNull);
600
601 if (PR_CreateProcessDetached(pszPath, (char * const *)args, nsnull, attr) != PR_SUCCESS)
602 goto end;
603
604 // Close /dev/null
605 PR_Close(devNull);
606 // Close the child end of the pipe to make it the only owner of the
607 // file descriptor, so that unexpected closing can be detected.
608 PR_Close(writable);
609 writable = nsnull;
610
611 char msg[10];
612 memset(msg, '\0', sizeof(msg));
613 if ( PR_Read(readable, msg, sizeof(msg)-1) != 5
614 || strcmp(msg, "READY"))
615 goto end;
616
617 rv = NS_OK;
618
619end:
620 if (readable)
621 PR_Close(readable);
622 if (writable)
623 PR_Close(writable);
624 if (attr)
625 PR_DestroyProcessAttr(attr);
626 return rv;
627}
628
629int main(int argc, char **argv)
630{
631 /*
632 * Initialize the VBox runtime without loading
633 * the support driver
634 */
635 int vrc = RTR3InitExe(argc, &argv, 0);
636 if (RT_FAILURE(vrc))
637 return RTMsgInitFailure(vrc);
638
639 static const RTGETOPTDEF s_aOptions[] =
640 {
641 { "--automate", 'a', RTGETOPT_REQ_NOTHING },
642 { "--auto-shutdown", 'A', RTGETOPT_REQ_NOTHING },
643 { "--daemonize", 'd', RTGETOPT_REQ_NOTHING },
644 { "--shutdown-delay", 'D', RTGETOPT_REQ_UINT32 },
645 { "--pidfile", 'p', RTGETOPT_REQ_STRING },
646 { "--logfile", 'F', RTGETOPT_REQ_STRING },
647 { "--logrotate", 'R', RTGETOPT_REQ_UINT32 },
648 { "--logsize", 'S', RTGETOPT_REQ_UINT64 },
649 { "--loginterval", 'I', RTGETOPT_REQ_UINT32 }
650 };
651
652 const char *pszLogFile = NULL;
653 uint32_t cHistory = 10; // enable log rotation, 10 files
654 uint32_t uHistoryFileTime = RT_SEC_1DAY; // max 1 day per file
655 uint64_t uHistoryFileSize = 100 * _1M; // max 100MB per file
656 bool fDaemonize = false;
657 PRFileDesc *daemon_pipe_wr = nsnull;
658
659 RTGETOPTSTATE GetOptState;
660 vrc = RTGetOptInit(&GetOptState, argc, argv, &s_aOptions[0], RT_ELEMENTS(s_aOptions), 1, 0 /*fFlags*/);
661 AssertRC(vrc);
662
663 RTGETOPTUNION ValueUnion;
664 while ((vrc = RTGetOpt(&GetOptState, &ValueUnion)))
665 {
666 switch (vrc)
667 {
668 case 'a':
669 /* --automate mode means we are started by XPCOM on
670 * demand. Daemonize ourselves and activate
671 * auto-shutdown. */
672 gAutoShutdown = true;
673 fDaemonize = true;
674 break;
675
676 case 'A':
677 /* --auto-shutdown mode means we're already daemonized. */
678 gAutoShutdown = true;
679 break;
680
681 case 'd':
682 fDaemonize = true;
683 break;
684
685 case 'D':
686 gShutdownDelayMs = ValueUnion.u32;
687 break;
688
689 case 'p':
690 g_pszPidFile = ValueUnion.psz;
691 break;
692
693 case 'F':
694 pszLogFile = ValueUnion.psz;
695 break;
696
697 case 'R':
698 cHistory = ValueUnion.u32;
699 break;
700
701 case 'S':
702 uHistoryFileSize = ValueUnion.u64;
703 break;
704
705 case 'I':
706 uHistoryFileTime = ValueUnion.u32;
707 break;
708
709 case 'h':
710 RTPrintf("no help\n");
711 return RTEXITCODE_SYNTAX;
712
713 case 'V':
714 RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr());
715 return RTEXITCODE_SUCCESS;
716
717 default:
718 return RTGetOptPrintError(vrc, &ValueUnion);
719 }
720 }
721
722 if (fDaemonize)
723 {
724 vboxsvcSpawnDaemonByReExec(argv[0], gAutoShutdown, g_pszPidFile);
725 exit(126);
726 }
727
728 nsresult rc;
729
730 /** @todo Merge this code with svcmain.cpp (use Logging.cpp?). */
731 char szLogFile[RTPATH_MAX];
732 if (!pszLogFile)
733 {
734 vrc = com::GetVBoxUserHomeDirectory(szLogFile, sizeof(szLogFile));
735 if (RT_SUCCESS(vrc))
736 vrc = RTPathAppend(szLogFile, sizeof(szLogFile), "VBoxSVC.log");
737 }
738 else
739 {
740 if (!RTStrPrintf(szLogFile, sizeof(szLogFile), "%s", pszLogFile))
741 vrc = VERR_NO_MEMORY;
742 }
743 if (RT_FAILURE(vrc))
744 return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to create logging file name, rc=%Rrc", vrc);
745
746 char szError[RTPATH_MAX + 128];
747 vrc = com::VBoxLogRelCreate("XPCOM Server", szLogFile,
748 RTLOGFLAGS_PREFIX_THREAD | RTLOGFLAGS_PREFIX_TIME_PROG,
749 VBOXSVC_LOG_DEFAULT, "VBOXSVC_RELEASE_LOG",
750 RTLOGDEST_FILE, UINT32_MAX /* cMaxEntriesPerGroup */,
751 cHistory, uHistoryFileTime, uHistoryFileSize,
752 szError, sizeof(szError));
753 if (RT_FAILURE(vrc))
754 return RTMsgErrorExit(RTEXITCODE_FAILURE, "failed to open release log (%s, %Rrc)", szError, vrc);
755
756 /* Set up a build identifier so that it can be seen from core dumps what
757 * exact build was used to produce the core. Same as in Console::i_powerUpThread(). */
758 static char saBuildID[48];
759 RTStrPrintf(saBuildID, sizeof(saBuildID), "%s%s%s%s VirtualBox %s r%u %s%s%s%s",
760 "BU", "IL", "DI", "D", RTBldCfgVersion(), RTBldCfgRevision(), "BU", "IL", "DI", "D");
761
762 daemon_pipe_wr = PR_GetInheritedFD(VBOXSVC_STARTUP_PIPE_NAME);
763 RTEnvUnset("NSPR_INHERIT_FDS");
764
765 const nsModuleComponentInfo VirtualBoxInfo = {
766 "VirtualBox component",
767 NS_VIRTUALBOX_CID,
768 NS_VIRTUALBOX_CONTRACTID,
769 VirtualBoxConstructor, // constructor function
770 NULL, // registration function
771 NULL, // deregistration function
772 VirtualBoxClassFactory::FactoryDestructor, // factory destructor function
773 NS_CI_INTERFACE_GETTER_NAME(VirtualBoxWrap),
774 NULL, // language helper
775 &NS_CLASSINFO_NAME(VirtualBoxWrap),
776 0 // flags
777 };
778
779 const nsModuleComponentInfoPlusFactoryConstructor components[] = {
780 {
781 &VirtualBoxInfo,
782 VirtualBoxClassFactory::FactoryConstructor // factory constructor function
783 }
784 };
785
786 do /* goto avoidance only */
787 {
788 rc = com::Initialize();
789 if (NS_FAILED(rc))
790 {
791 RTMsgError("Failed to initialize XPCOM! (rc=%Rhrc)\n", rc);
792 break;
793 }
794
795 nsCOMPtr<nsIComponentRegistrar> registrar;
796 rc = NS_GetComponentRegistrar(getter_AddRefs(registrar));
797 if (NS_FAILED(rc))
798 {
799 RTMsgError("Failed to get component registrar! (rc=%Rhrc)", rc);
800 break;
801 }
802
803 registrar->AutoRegister(nsnull);
804 rc = RegisterSelfComponents(registrar, components,
805 NS_ARRAY_LENGTH(components));
806 if (NS_FAILED(rc))
807 {
808 RTMsgError("Failed to register server components! (rc=%Rhrc)", rc);
809 break;
810 }
811
812 nsCOMPtr<ipcIService> ipcServ(do_GetService(IPC_SERVICE_CONTRACTID, &rc));
813 if (NS_FAILED(rc))
814 {
815 RTMsgError("Failed to get IPC service! (rc=%Rhrc)", rc);
816 break;
817 }
818
819 NS_ADDREF(gIpcServ = ipcServ);
820
821 LogFlowFunc(("Will use \"%s\" as server name.\n", VBOXSVC_IPC_NAME));
822
823 rc = gIpcServ->AddName(VBOXSVC_IPC_NAME);
824 if (NS_FAILED(rc))
825 {
826 LogFlowFunc(("Failed to register the server name (rc=%Rhrc (%08X))!\n"
827 "Is another server already running?\n", rc, rc));
828
829 RTMsgError("Failed to register the server name \"%s\" (rc=%Rhrc)!\n"
830 "Is another server already running?\n",
831 VBOXSVC_IPC_NAME, rc);
832 NS_RELEASE(gIpcServ);
833 break;
834 }
835
836 {
837 /* setup signal handling to convert some signals to a quit event */
838 struct sigaction sa;
839 sa.sa_handler = signal_handler;
840 sigemptyset(&sa.sa_mask);
841 sa.sa_flags = 0;
842 sigaction(SIGINT, &sa, NULL);
843 sigaction(SIGQUIT, &sa, NULL);
844 sigaction(SIGTERM, &sa, NULL);
845// XXX Temporary allow release assertions to terminate VBoxSVC
846// sigaction(SIGTRAP, &sa, NULL);
847 sigaction(SIGUSR1, &sa, NULL);
848 }
849
850 {
851 char szBuf[80];
852 size_t cSize;
853
854 cSize = RTStrPrintf(szBuf, sizeof(szBuf),
855 VBOX_PRODUCT" XPCOM Server Version "
856 VBOX_VERSION_STRING);
857 for (size_t i = cSize; i > 0; i--)
858 putchar('*');
859 RTPrintf("\n%s\n", szBuf);
860 RTPrintf("(C) 2004-" VBOX_C_YEAR " " VBOX_VENDOR "\n"
861 "All rights reserved.\n");
862#ifdef DEBUG
863 RTPrintf("Debug version.\n");
864#endif
865 }
866
867 if (daemon_pipe_wr != nsnull)
868 {
869 RTPrintf("\nStarting event loop....\n[send TERM signal to quit]\n");
870 /* now we're ready, signal the parent process */
871 PR_Write(daemon_pipe_wr, RT_STR_TUPLE("READY"));
872 /* close writing end of the pipe, its job is done */
873 PR_Close(daemon_pipe_wr);
874 }
875 else
876 RTPrintf("\nStarting event loop....\n[press Ctrl-C to quit]\n");
877
878 if (g_pszPidFile)
879 {
880 RTFILE hPidFile = NIL_RTFILE;
881 vrc = RTFileOpen(&hPidFile, g_pszPidFile, RTFILE_O_WRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE);
882 if (RT_SUCCESS(vrc))
883 {
884 char szBuf[32];
885 const char *lf = "\n";
886 RTStrFormatNumber(szBuf, getpid(), 10, 0, 0, 0);
887 RTFileWrite(hPidFile, szBuf, strlen(szBuf), NULL);
888 RTFileWrite(hPidFile, lf, strlen(lf), NULL);
889 RTFileClose(hPidFile);
890 }
891 }
892
893 // Increase the file table size to 10240 or as high as possible.
894 struct rlimit lim;
895 if (getrlimit(RLIMIT_NOFILE, &lim) == 0)
896 {
897 if ( lim.rlim_cur < 10240
898 && lim.rlim_cur < lim.rlim_max)
899 {
900 lim.rlim_cur = RT_MIN(lim.rlim_max, 10240);
901 if (setrlimit(RLIMIT_NOFILE, &lim) == -1)
902 RTPrintf("WARNING: failed to increase file descriptor limit. (%d)\n", errno);
903 }
904 }
905 else
906 RTPrintf("WARNING: failed to obtain per-process file-descriptor limit (%d).\n", errno);
907
908 /* get the main thread's event queue */
909 gEventQ = com::NativeEventQueue::getMainEventQueue();
910 if (!gEventQ)
911 {
912 RTMsgError("Failed to get the main event queue! (rc=%Rhrc)", rc);
913 break;
914 }
915
916 while (gKeepRunning)
917 {
918 vrc = gEventQ->processEventQueue(RT_INDEFINITE_WAIT);
919 if (RT_FAILURE(vrc) && vrc != VERR_TIMEOUT)
920 {
921 LogRel(("Failed to wait for events! (rc=%Rrc)", vrc));
922 break;
923 }
924 }
925
926 gEventQ = NULL;
927 RTPrintf("Terminated event loop.\n");
928
929 /* unregister ourselves. After this point, clients will start a new
930 * process because they won't be able to resolve the server name.*/
931 gIpcServ->RemoveName(VBOXSVC_IPC_NAME);
932 }
933 while (0); // this scopes the nsCOMPtrs
934
935 NS_IF_RELEASE(gIpcServ);
936
937 /* no nsCOMPtrs are allowed to be alive when you call com::Shutdown(). */
938
939 LogFlowFunc(("Calling com::Shutdown()...\n"));
940 rc = com::Shutdown();
941 LogFlowFunc(("Finished com::Shutdown() (rc=%Rhrc)\n", rc));
942
943 if (NS_FAILED(rc))
944 RTMsgError("Failed to shutdown XPCOM! (rc=%Rhrc)", rc);
945
946 RTPrintf("XPCOM server has shutdown.\n");
947
948 if (g_pszPidFile)
949 RTFileDelete(g_pszPidFile);
950
951 return RTEXITCODE_SUCCESS;
952}
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