/* $Id: server.cpp 36478 2011-03-30 18:39:29Z vboxsync $ */ /** @file * XPCOM server process (VBoxSVC) start point. */ /* * Copyright (C) 2006-2011 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ #include #include #include #ifdef XPCOM_GLUE # include #endif #include #include #include "prio.h" #include "prproces.h" #include "server.h" #include "Logging.h" #include #include #include #include #include #include #include #include #include #include #include #include // for the signal handler #include #include #include #include #include #include ///////////////////////////////////////////////////////////////////////////// // VirtualBox component instantiation ///////////////////////////////////////////////////////////////////////////// #include #include #include "ApplianceImpl.h" #include "AudioAdapterImpl.h" #include "BandwidthControlImpl.h" #include "BandwidthGroupImpl.h" #include "DHCPServerRunner.h" #include "DHCPServerImpl.h" #include "GuestOSTypeImpl.h" #include "HostImpl.h" #include "HostNetworkInterfaceImpl.h" #include "MachineImpl.h" #include "MediumFormatImpl.h" #include "MediumImpl.h" #include "NATEngineImpl.h" #include "NetworkAdapterImpl.h" #include "ParallelPortImpl.h" #include "ProgressCombinedImpl.h" #include "ProgressProxyImpl.h" #include "SerialPortImpl.h" #include "SharedFolderImpl.h" #include "SnapshotImpl.h" #include "StorageControllerImpl.h" #include "SystemPropertiesImpl.h" #include "USBControllerImpl.h" #include "VFSExplorerImpl.h" #include "VirtualBoxImpl.h" #include "VRDEServerImpl.h" #ifdef VBOX_WITH_USB # include "HostUSBDeviceImpl.h" # include "USBDeviceFilterImpl.h" # include "USBDeviceImpl.h" #endif #ifdef VBOX_WITH_EXTPACK # include "ExtPackManagerImpl.h" #endif /* implement nsISupports parts of our objects with support for nsIClassInfo */ NS_DECL_CLASSINFO(VirtualBox) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VirtualBox, IVirtualBox) NS_DECL_CLASSINFO(Machine) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Machine, IMachine) NS_DECL_CLASSINFO(VFSExplorer) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VFSExplorer, IVFSExplorer) NS_DECL_CLASSINFO(Appliance) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Appliance, IAppliance) NS_DECL_CLASSINFO(VirtualSystemDescription) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VirtualSystemDescription, IVirtualSystemDescription) NS_DECL_CLASSINFO(SessionMachine) NS_IMPL_THREADSAFE_ISUPPORTS2_CI(SessionMachine, IMachine, IInternalMachineControl) NS_DECL_CLASSINFO(SnapshotMachine) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SnapshotMachine, IMachine) NS_DECL_CLASSINFO(Snapshot) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Snapshot, ISnapshot) NS_DECL_CLASSINFO(Medium) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Medium, IMedium) NS_DECL_CLASSINFO(MediumFormat) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(MediumFormat, IMediumFormat) NS_DECL_CLASSINFO(MediumAttachment) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(MediumAttachment, IMediumAttachment) NS_DECL_CLASSINFO(Progress) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Progress, IProgress) NS_DECL_CLASSINFO(CombinedProgress) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(CombinedProgress, IProgress) NS_DECL_CLASSINFO(ProgressProxy) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ProgressProxy, IProgress) NS_DECL_CLASSINFO(SharedFolder) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SharedFolder, ISharedFolder) NS_DECL_CLASSINFO(VRDEServer) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(VRDEServer, IVRDEServer) NS_DECL_CLASSINFO(Host) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(Host, IHost) NS_DECL_CLASSINFO(HostNetworkInterface) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(HostNetworkInterface, IHostNetworkInterface) NS_DECL_CLASSINFO(DHCPServer) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(DHCPServer, IDHCPServer) NS_DECL_CLASSINFO(GuestOSType) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(GuestOSType, IGuestOSType) NS_DECL_CLASSINFO(NetworkAdapter) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(NetworkAdapter, INetworkAdapter) NS_DECL_CLASSINFO(NATEngine) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(NATEngine, INATEngine) NS_DECL_CLASSINFO(SerialPort) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SerialPort, ISerialPort) NS_DECL_CLASSINFO(ParallelPort) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ParallelPort, IParallelPort) NS_DECL_CLASSINFO(USBController) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(USBController, IUSBController) NS_DECL_CLASSINFO(StorageController) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(StorageController, IStorageController) #ifdef VBOX_WITH_USB NS_DECL_CLASSINFO(USBDeviceFilter) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(USBDeviceFilter, IUSBDeviceFilter) NS_DECL_CLASSINFO(HostUSBDevice) NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HostUSBDevice, IUSBDevice, IHostUSBDevice) NS_DECL_CLASSINFO(HostUSBDeviceFilter) NS_IMPL_THREADSAFE_ISUPPORTS2_CI(HostUSBDeviceFilter, IUSBDeviceFilter, IHostUSBDeviceFilter) #endif NS_DECL_CLASSINFO(AudioAdapter) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(AudioAdapter, IAudioAdapter) NS_DECL_CLASSINFO(SystemProperties) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(SystemProperties, ISystemProperties) #ifdef VBOX_WITH_RESOURCE_USAGE_API NS_DECL_CLASSINFO(PerformanceCollector) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(PerformanceCollector, IPerformanceCollector) NS_DECL_CLASSINFO(PerformanceMetric) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(PerformanceMetric, IPerformanceMetric) #endif /* VBOX_WITH_RESOURCE_USAGE_API */ NS_DECL_CLASSINFO(BIOSSettings) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(BIOSSettings, IBIOSSettings) #ifdef VBOX_WITH_EXTPACK NS_DECL_CLASSINFO(ExtPackFile) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ExtPackFile, IExtPackFile) NS_DECL_CLASSINFO(ExtPack) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ExtPack, IExtPack) NS_DECL_CLASSINFO(ExtPackManager) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(ExtPackManager, IExtPackManager) #endif NS_DECL_CLASSINFO(BandwidthGroup) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(BandwidthGroup, IBandwidthGroup) NS_DECL_CLASSINFO(BandwidthControl) NS_IMPL_THREADSAFE_ISUPPORTS1_CI(BandwidthControl, IBandwidthControl) //////////////////////////////////////////////////////////////////////////////// enum { /* Delay before shutting down the VirtualBox server after the last * VirtualBox instance is released, in ms */ VBoxSVC_ShutdownDelay = 5000 }; static bool gAutoShutdown = false; static nsIEventQueue *gEventQ = nsnull; static PRBool volatile gKeepRunning = PR_TRUE; static PRBool volatile gAllowSigUsrQuit = PR_TRUE; ///////////////////////////////////////////////////////////////////////////// /** * Simple but smart PLEvent wrapper. * * @note Instances must be always created with operator new! */ class MyEvent { public: MyEvent() { mEv.that = NULL; }; /** * Posts this event to the given message queue. This method may only be * called once. @note On success, the event will be deleted automatically * after it is delivered and handled. On failure, the event will delete * itself before this method returns! The caller must not delete it in * either case. */ nsresult postTo(nsIEventQueue *aEventQ) { AssertReturn(mEv.that == NULL, NS_ERROR_FAILURE); AssertReturn(aEventQ, NS_ERROR_FAILURE); nsresult rv = aEventQ->InitEvent(&mEv.e, NULL, eventHandler, eventDestructor); if (NS_SUCCEEDED(rv)) { mEv.that = this; rv = aEventQ->PostEvent(&mEv.e); if (NS_SUCCEEDED(rv)) return rv; } delete this; return rv; } virtual void *handler() = 0; private: struct Ev { PLEvent e; MyEvent *that; } mEv; static void *PR_CALLBACK eventHandler(PLEvent *self) { return reinterpret_cast(self)->that->handler(); } static void PR_CALLBACK eventDestructor(PLEvent *self) { delete reinterpret_cast(self)->that; } }; //////////////////////////////////////////////////////////////////////////////// /** * VirtualBox class factory that destroys the created instance right after * the last reference to it is released by the client, and recreates it again * when necessary (so VirtualBox acts like a singleton object). */ class VirtualBoxClassFactory : public VirtualBox { public: virtual ~VirtualBoxClassFactory() { LogFlowFunc(("Deleting VirtualBox...\n")); FinalRelease(); sInstance = NULL; LogFlowFunc(("VirtualBox object deleted.\n")); RTPrintf("Informational: VirtualBox object deleted.\n"); } NS_IMETHOD_(nsrefcnt) Release() { /* we overload Release() to guarantee the VirtualBox destructor is * always called on the main thread */ nsrefcnt count = VirtualBox::Release(); if (count == 1) { /* the last reference held by clients is being released * (see GetInstance()) */ PRBool onMainThread = PR_TRUE; if (gEventQ) gEventQ->IsOnCurrentThread(&onMainThread); PRBool timerStarted = PR_FALSE; /* sTimer is null if this call originates from FactoryDestructor()*/ if (sTimer != NULL) { LogFlowFunc(("Last VirtualBox instance was released.\n")); LogFlowFunc(("Scheduling server shutdown in %d ms...\n", VBoxSVC_ShutdownDelay)); /* make sure the previous timer (if any) is stopped; * otherwise RTTimerStart() will definitely fail. */ RTTimerLRStop(sTimer); int vrc = RTTimerLRStart(sTimer, uint64_t(VBoxSVC_ShutdownDelay) * 1000000); AssertRC(vrc); timerStarted = SUCCEEDED(vrc); } else { LogFlowFunc(("Last VirtualBox instance was released " "on XPCOM shutdown.\n")); Assert(onMainThread); } gAllowSigUsrQuit = PR_TRUE; if (!timerStarted) { if (!onMainThread) { /* Failed to start the timer, post the shutdown event * manually if not on the main thread already. */ ShutdownTimer(NULL, NULL, 0); } else { /* Here we come if: * * a) gEventQ is 0 which means either FactoryDestructor() is called * or the IPC/DCONNECT shutdown sequence is initiated by the * XPCOM shutdown routine (NS_ShutdownXPCOM()), which always * happens on the main thread. * * b) gEventQ has reported we're on the main thread. This means * that DestructEventHandler() has been called, but another * client was faster and requested VirtualBox again. * * In either case, there is nothing to do. * * Note: case b) is actually no more valid since we don't * call Release() from DestructEventHandler() in this case * any more. Thus, we assert below. */ Assert(gEventQ == NULL); } } } return count; } class MaybeQuitEvent : public MyEvent { /* called on the main thread */ void *handler() { LogFlowFunc(("\n")); Assert(RTCritSectIsInitialized(&sLock)); /* stop accepting GetInstance() requests on other threads during * possible destruction */ RTCritSectEnter(&sLock); nsrefcnt count = 0; /* sInstance is NULL here if it was deleted immediately after * creation due to initialization error. See GetInstance(). */ if (sInstance != NULL) { /* Release the guard reference added in GetInstance() */ count = sInstance->Release(); } if (count == 0) { if (gAutoShutdown) { Assert(sInstance == NULL); LogFlowFunc(("Terminating the server process...\n")); /* make it leave the event loop */ gKeepRunning = PR_FALSE; } } else { /* This condition is quite rare: a new client happened to * connect after this event has been posted to the main queue * but before it started to process it. */ LogFlowFunc(("Destruction is canceled (refcnt=%d).\n", count)); } RTCritSectLeave(&sLock); return NULL; } }; static void ShutdownTimer(RTTIMERLR hTimerLR, void *pvUser, uint64_t /*iTick*/) { NOREF(hTimerLR); NOREF(pvUser); /* A "too late" event is theoretically possible if somebody * manually ended the server after a destruction has been scheduled * and this method was so lucky that it got a chance to run before * the timer was killed. */ AssertReturnVoid(gEventQ); /* post a quit event to the main queue */ MaybeQuitEvent *ev = new MaybeQuitEvent(); nsresult rv = ev->postTo(gEventQ); NOREF(rv); /* A failure above means we've been already stopped (for example * by Ctrl-C). FactoryDestructor() (NS_ShutdownXPCOM()) * will do the job. Nothing to do. */ } static NS_IMETHODIMP FactoryConstructor() { LogFlowFunc(("\n")); /* create a critsect to protect object construction */ if (RT_FAILURE(RTCritSectInit(&sLock))) return NS_ERROR_OUT_OF_MEMORY; int vrc = RTTimerLRCreateEx(&sTimer, 0, 0, ShutdownTimer, NULL); if (RT_FAILURE(vrc)) { LogFlowFunc(("Failed to create a timer! (vrc=%Rrc)\n", vrc)); return NS_ERROR_FAILURE; } return NS_OK; } static NS_IMETHODIMP FactoryDestructor() { LogFlowFunc(("\n")); RTTimerLRDestroy(sTimer); sTimer = NULL; RTCritSectDelete(&sLock); if (sInstance != NULL) { /* Either posting a destruction event failed for some reason (most * likely, the quit event has been received before the last release), * or the client has terminated abnormally w/o releasing its * VirtualBox instance (so NS_ShutdownXPCOM() is doing a cleanup). * Release the guard reference we added in GetInstance(). */ sInstance->Release(); } return NS_OK; } static nsresult GetInstance(VirtualBox **inst) { LogFlowFunc(("Getting VirtualBox object...\n")); RTCritSectEnter(&sLock); if (!gKeepRunning) { LogFlowFunc(("Process termination requested first. Refusing.\n")); RTCritSectLeave(&sLock); /* this rv is what CreateInstance() on the client side returns * when the server process stops accepting events. Do the same * here. The client wrapper should attempt to start a new process in * response to a failure from us. */ return NS_ERROR_ABORT; } nsresult rv = NS_OK; if (sInstance == NULL) { LogFlowFunc (("Creating new VirtualBox object...\n")); sInstance = new VirtualBoxClassFactory(); if (sInstance != NULL) { /* make an extra AddRef to take the full control * on the VirtualBox destruction (see FinalRelease()) */ sInstance->AddRef(); sInstance->AddRef(); /* protect FinalConstruct() */ rv = sInstance->FinalConstruct(); RTPrintf("Informational: VirtualBox object created (rc=%Rhrc).\n", rv); if (NS_FAILED(rv)) { /* On failure diring VirtualBox initialization, delete it * immediately on the current thread by releasing all * references in order to properly schedule the server * shutdown. Since the object is fully deleted here, there * is a chance to fix the error and request a new * instantiation before the server terminates. However, * the main reason to maintain the shutdown delay on * failure is to let the front-end completely fetch error * info from a server-side IVirtualBoxErrorInfo object. */ sInstance->Release(); sInstance->Release(); Assert(sInstance == NULL); } else { /* On success, make sure the previous timer is stopped to * cancel a scheduled server termination (if any). */ gAllowSigUsrQuit = PR_FALSE; RTTimerLRStop(sTimer); } } else { rv = NS_ERROR_OUT_OF_MEMORY; } } else { LogFlowFunc(("Using existing VirtualBox object...\n")); nsrefcnt count = sInstance->AddRef(); Assert(count > 1); if (count == 2) { LogFlowFunc(("Another client has requested a reference to VirtualBox, canceling destruction...\n")); /* make sure the previous timer is stopped */ gAllowSigUsrQuit = PR_FALSE; RTTimerLRStop(sTimer); } } *inst = sInstance; RTCritSectLeave(&sLock); return rv; } private: /* Don't be confused that sInstance is of the *ClassFactory type. This is * actually a singleton instance (*ClassFactory inherits the singleton * class; we combined them just for "simplicity" and used "static" for * factory methods. *ClassFactory here is necessary for a couple of extra * methods. */ static VirtualBoxClassFactory *sInstance; static RTCRITSECT sLock; static RTTIMERLR sTimer; }; VirtualBoxClassFactory *VirtualBoxClassFactory::sInstance = NULL; RTCRITSECT VirtualBoxClassFactory::sLock; RTTIMERLR VirtualBoxClassFactory::sTimer = NIL_RTTIMERLR; NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR_WITH_RC(VirtualBox, VirtualBoxClassFactory::GetInstance) //////////////////////////////////////////////////////////////////////////////// typedef NSFactoryDestructorProcPtr NSFactoryConstructorProcPtr; /** * Enhanced module component information structure. * * nsModuleComponentInfo lacks the factory construction callback, here we add * it. This callback is called straight after a nsGenericFactory instance is * successfully created in RegisterSelfComponents. */ struct nsModuleComponentInfoPlusFactoryConstructor { /** standard module component information */ const nsModuleComponentInfo *mpModuleComponentInfo; /** (optional) Factory Construction Callback */ NSFactoryConstructorProcPtr mFactoryConstructor; }; ///////////////////////////////////////////////////////////////////////////// /** * Helper function to register self components upon start-up * of the out-of-proc server. */ static nsresult RegisterSelfComponents(nsIComponentRegistrar *registrar, const nsModuleComponentInfoPlusFactoryConstructor *aComponents, PRUint32 count) { nsresult rc = NS_OK; const nsModuleComponentInfoPlusFactoryConstructor *info = aComponents; for (PRUint32 i = 0; i < count && NS_SUCCEEDED(rc); i++, info++) { /* skip components w/o a constructor */ if (!info->mpModuleComponentInfo->mConstructor) continue; /* create a new generic factory for a component and register it */ nsIGenericFactory *factory; rc = NS_NewGenericFactory(&factory, info->mpModuleComponentInfo); if (NS_SUCCEEDED(rc) && info->mFactoryConstructor) { rc = info->mFactoryConstructor(); if (NS_FAILED(rc)) NS_RELEASE(factory); } if (NS_SUCCEEDED(rc)) { rc = registrar->RegisterFactory(info->mpModuleComponentInfo->mCID, info->mpModuleComponentInfo->mDescription, info->mpModuleComponentInfo->mContractID, factory); NS_RELEASE(factory); } } return rc; } ///////////////////////////////////////////////////////////////////////////// static ipcIService *gIpcServ = nsnull; static const char *g_pszPidFile = NULL; class ForceQuitEvent : public MyEvent { void *handler() { LogFlowFunc(("\n")); gKeepRunning = PR_FALSE; if (g_pszPidFile) RTFileDelete(g_pszPidFile); return NULL; } }; static void signal_handler(int sig) { if (gEventQ && gKeepRunning) { if (sig == SIGUSR1) { if (gAllowSigUsrQuit) { VirtualBoxClassFactory::MaybeQuitEvent *ev = new VirtualBoxClassFactory::MaybeQuitEvent(); ev->postTo(gEventQ); } /* else do nothing */ } else { /* post a force quit event to the queue */ ForceQuitEvent *ev = new ForceQuitEvent(); ev->postTo(gEventQ); } } } static nsresult vboxsvcSpawnDaemonByReExec(const char *pszPath) { PRFileDesc *readable = nsnull, *writable = nsnull; PRProcessAttr *attr = nsnull; nsresult rv = NS_ERROR_FAILURE; PRFileDesc *devNull; // The ugly casts are necessary because the PR_CreateProcessDetached has // a const array of writable strings as a parameter. It won't write. */ char * const args[] = { (char *)pszPath, (char *)"--auto-shutdown", 0 }; // Use a pipe to determine when the daemon process is in the position // to actually process requests. The daemon will write "READY" to the pipe. if (PR_CreatePipe(&readable, &writable) != PR_SUCCESS) goto end; PR_SetFDInheritable(writable, PR_TRUE); attr = PR_NewProcessAttr(); if (!attr) goto end; if (PR_ProcessAttrSetInheritableFD(attr, writable, VBOXSVC_STARTUP_PIPE_NAME) != PR_SUCCESS) goto end; devNull = PR_Open("/dev/null", PR_RDWR, 0); if (!devNull) goto end; PR_ProcessAttrSetStdioRedirect(attr, PR_StandardInput, devNull); PR_ProcessAttrSetStdioRedirect(attr, PR_StandardOutput, devNull); PR_ProcessAttrSetStdioRedirect(attr, PR_StandardError, devNull); if (PR_CreateProcessDetached(pszPath, args, nsnull, attr) != PR_SUCCESS) goto end; // Close /dev/null PR_Close(devNull); // Close the child end of the pipe to make it the only owner of the // file descriptor, so that unexpected closing can be detected. PR_Close(writable); writable = nsnull; char msg[10]; memset(msg, '\0', sizeof(msg)); if ( PR_Read(readable, msg, sizeof(msg)-1) != 5 || strcmp(msg, "READY")) goto end; rv = NS_OK; end: if (readable) PR_Close(readable); if (writable) PR_Close(writable); if (attr) PR_DestroyProcessAttr(attr); return rv; } int main(int argc, char **argv) { /* * Initialize the VBox runtime without loading * the support driver */ RTR3Init(); static const RTGETOPTDEF s_aOptions[] = { { "--automate", 'a', RTGETOPT_REQ_NOTHING }, { "--auto-shutdown", 'A', RTGETOPT_REQ_NOTHING }, { "--daemonize", 'd', RTGETOPT_REQ_NOTHING }, { "--pidfile", 'p', RTGETOPT_REQ_STRING }, }; bool fDaemonize = false; PRFileDesc *daemon_pipe_wr = nsnull; RTGETOPTSTATE GetOptState; int vrc = RTGetOptInit(&GetOptState, argc, argv, &s_aOptions[0], RT_ELEMENTS(s_aOptions), 1, 0 /*fFlags*/); AssertRC(vrc); RTGETOPTUNION ValueUnion; while ((vrc = RTGetOpt(&GetOptState, &ValueUnion))) { switch (vrc) { case 'a': { /* --automate mode means we are started by XPCOM on * demand. Daemonize ourselves and activate * auto-shutdown. */ gAutoShutdown = true; fDaemonize = true; break; } /* Used together with '-P', see below. Internal use only. */ case 'A': { gAutoShutdown = true; break; } case 'd': { fDaemonize = true; break; } case 'p': { g_pszPidFile = ValueUnion.psz; break; } case 'h': { RTPrintf("no help\n"); return 1; } case 'V': { RTPrintf("%sr%s\n", RTBldCfgVersion(), RTBldCfgRevisionStr()); return 0; } default: return RTGetOptPrintError(vrc, &ValueUnion); } } if (fDaemonize) { vboxsvcSpawnDaemonByReExec(argv[0]); exit(126); } nsresult rc; daemon_pipe_wr = PR_GetInheritedFD(VBOXSVC_STARTUP_PIPE_NAME); RTEnvUnset("NSPR_INHERIT_FDS"); const nsModuleComponentInfo VirtualBoxInfo = { "VirtualBox component", NS_VIRTUALBOX_CID, NS_VIRTUALBOX_CONTRACTID, VirtualBoxConstructor, // constructor function NULL, // registration function NULL, // deregistration function VirtualBoxClassFactory::FactoryDestructor, // factory destructor function NS_CI_INTERFACE_GETTER_NAME(VirtualBox), NULL, // language helper &NS_CLASSINFO_NAME(VirtualBox), 0 // flags }; const nsModuleComponentInfoPlusFactoryConstructor components[] = { { &VirtualBoxInfo, VirtualBoxClassFactory::FactoryConstructor // factory constructor function } }; do { rc = com::Initialize(); if (NS_FAILED(rc)) { RTMsgError("Failed to initialize XPCOM! (rc=%Rhrc)\n", rc); break; } nsCOMPtr registrar; rc = NS_GetComponentRegistrar(getter_AddRefs(registrar)); if (NS_FAILED(rc)) { RTMsgError("Failed to get component registrar! (rc=%Rhrc)", rc); break; } registrar->AutoRegister(nsnull); rc = RegisterSelfComponents(registrar, components, NS_ARRAY_LENGTH(components)); if (NS_FAILED(rc)) { RTMsgError("Failed to register server components! (rc=%Rhrc)", rc); break; } /* get the main thread's event queue (afaik, the dconnect service always * gets created upon XPCOM startup, so it will use the main (this) * thread's event queue to receive IPC events) */ rc = NS_GetMainEventQ(&gEventQ); if (NS_FAILED(rc)) { RTMsgError("Failed to get the main event queue! (rc=%Rhrc)", rc); break; } nsCOMPtr ipcServ (do_GetService(IPC_SERVICE_CONTRACTID, &rc)); if (NS_FAILED(rc)) { RTMsgError("Failed to get IPC service! (rc=%Rhrc)", rc); break; } NS_ADDREF(gIpcServ = ipcServ); LogFlowFunc(("Will use \"%s\" as server name.\n", VBOXSVC_IPC_NAME)); rc = gIpcServ->AddName(VBOXSVC_IPC_NAME); if (NS_FAILED(rc)) { LogFlowFunc(("Failed to register the server name (rc=%Rhrc (%08X))!\n" "Is another server already running?\n", rc, rc)); RTMsgError("Failed to register the server name \"%s\" (rc=%Rhrc)!\n" "Is another server already running?\n", VBOXSVC_IPC_NAME, rc); NS_RELEASE(gIpcServ); break; } { /* setup signal handling to convert some signals to a quit event */ struct sigaction sa; sa.sa_handler = signal_handler; sigemptyset(&sa.sa_mask); sa.sa_flags = 0; sigaction(SIGINT, &sa, NULL); sigaction(SIGQUIT, &sa, NULL); sigaction(SIGTERM, &sa, NULL); sigaction(SIGTRAP, &sa, NULL); sigaction(SIGUSR1, &sa, NULL); } { char szBuf[80]; int iSize; iSize = RTStrPrintf(szBuf, sizeof(szBuf), VBOX_PRODUCT" XPCOM Server Version " VBOX_VERSION_STRING); for (int i = iSize; i > 0; i--) putchar('*'); RTPrintf("\n%s\n", szBuf); RTPrintf("(C) 2008-" VBOX_C_YEAR " " VBOX_VENDOR "\n" "All rights reserved.\n"); #ifdef DEBUG RTPrintf("Debug version.\n"); #endif } if (daemon_pipe_wr != nsnull) { RTPrintf("\nStarting event loop....\n[send TERM signal to quit]\n"); /* now we're ready, signal the parent process */ PR_Write(daemon_pipe_wr, "READY", strlen("READY")); /* close writing end of the pipe, its job is done */ PR_Close(daemon_pipe_wr); } else RTPrintf("\nStarting event loop....\n[press Ctrl-C to quit]\n"); if (g_pszPidFile) { RTFILE hPidFile = NIL_RTFILE; vrc = RTFileOpen(&hPidFile, g_pszPidFile, RTFILE_O_WRITE | RTFILE_O_CREATE_REPLACE | RTFILE_O_DENY_NONE); if (RT_SUCCESS(vrc)) { char szBuf[32]; const char *lf = "\n"; RTStrFormatNumber(szBuf, getpid(), 10, 0, 0, 0); RTFileWrite(hPidFile, szBuf, strlen(szBuf), NULL); RTFileWrite(hPidFile, lf, strlen(lf), NULL); RTFileClose(hPidFile); } } // Increase the file table size to 10240 or as high as possible. struct rlimit lim; if (getrlimit(RLIMIT_NOFILE, &lim) == 0) { if ( lim.rlim_cur < 10240 && lim.rlim_cur < lim.rlim_max) { lim.rlim_cur = RT_MIN(lim.rlim_max, 10240); if (setrlimit(RLIMIT_NOFILE, &lim) == -1) RTPrintf("WARNING: failed to increase file descriptor limit. (%d)\n", errno); } } else RTPrintf("WARNING: failed to obtain per-process file-descriptor limit (%d).\n", errno); PLEvent *ev; while (gKeepRunning) { gEventQ->WaitForEvent(&ev); gEventQ->HandleEvent(ev); } /* stop accepting new events. Clients that happen to resolve our * name and issue a CreateInstance() request after this point will * get NS_ERROR_ABORT once we handle the remaining messages. As a * result, they should try to start a new server process. */ gEventQ->StopAcceptingEvents(); /* unregister ourselves. After this point, clients will start a new * process because they won't be able to resolve the server name.*/ gIpcServ->RemoveName(VBOXSVC_IPC_NAME); /* process any remaining events. These events may include * CreateInstance() requests received right before we called * StopAcceptingEvents() above. We will detect this case below, * restore gKeepRunning and continue to serve. */ gEventQ->ProcessPendingEvents(); RTPrintf("Terminated event loop.\n"); } while (0); // this scopes the nsCOMPtrs NS_IF_RELEASE(gIpcServ); NS_IF_RELEASE(gEventQ); /* no nsCOMPtrs are allowed to be alive when you call com::Shutdown(). */ LogFlowFunc(("Calling com::Shutdown()...\n")); rc = com::Shutdown(); LogFlowFunc(("Finished com::Shutdown() (rc=%Rhrc)\n", rc)); if (NS_FAILED(rc)) RTMsgError("Failed to shutdown XPCOM! (rc=%Rhrc)", rc); RTPrintf("XPCOM server has shutdown.\n"); if (g_pszPidFile) RTFileDelete(g_pszPidFile); return 0; }