Ejemplo n.º 1
0
void CollectorLinux::addVolumeDependencies(const char *pcszVolume, DiskList& listDisks)
{
    char szVolInfo[RTPATH_MAX];
    int rc = RTPathAppPrivateArch(szVolInfo,
                                  sizeof(szVolInfo) - sizeof("/" VBOXVOLINFO_NAME " ") - strlen(pcszVolume));
    if (RT_FAILURE(rc))
    {
        LogRel(("VolInfo: Failed to get program path, rc=%Rrc\n", rc));
        return;
    }
    strcat(szVolInfo, "/" VBOXVOLINFO_NAME " ");
    strcat(szVolInfo, pcszVolume);

    FILE *fp = popen(szVolInfo, "r");
    if (fp)
    {
        char szBuf[128];

        while (fgets(szBuf, sizeof(szBuf), fp))
            if (strncmp(szBuf, RT_STR_TUPLE("dm-")))
                listDisks.push_back(RTCString(trimTrailingDigits(szBuf)));
            else
                listDisks.push_back(RTCString(trimNewline(szBuf)));

        pclose(fp);
    }
    else
        listDisks.push_back(RTCString(pcszVolume));
}
Ejemplo n.º 2
0
/**
 * Loads the modules.
 *
 * @returns RTEXITCODE_SUCCESS on success.
 */
static RTEXITCODE LoadModules(void)
{
    for (uint32_t i = 0; i < RT_ELEMENTS(g_aModules); i++)
    {
        if (g_aModules[i].fPreload)
        {
            char            szPath[RTPATH_MAX];
            int rc = RTPathAppPrivateArch(szPath, sizeof(szPath));
            if (RT_SUCCESS(rc))
                rc = RTPathAppend(szPath, sizeof(szPath), g_aModules[i].pszName);
            if (RT_FAILURE(rc))
                return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTPathAppPrivateArch or RTPathAppend returned %Rrc", rc);

            void           *pvImageBase;
            RTERRINFOSTATIC ErrInfo;
            RTErrInfoInitStatic(&ErrInfo);
            rc = SUPR3LoadModule(szPath, g_aModules[i].pszName, &g_aModules[i].pvImageBase, &ErrInfo.Core);
            if (RT_FAILURE(rc))
                return RTMsgErrorExit(RTEXITCODE_FAILURE, "SUPR3LoadModule failed for %s (%s): %s (rc=%Rrc)",
                                      g_aModules[i].pszName, szPath, ErrInfo.Core.pszMsg, rc);
            if (g_cVerbose >= 1)
                RTMsgInfo("Loaded '%s' ('%s') at %p\n", szPath, g_aModules[i].pszName, g_aModules[i].pvImageBase);
        }
    }

    RTStrmFlush(g_pStdOut);
    return RTEXITCODE_SUCCESS;
}
Ejemplo n.º 3
0
static char *__findDLL( char *name, char *dir )
{
        static char path[8092];

        if (!dir)
        {
#if defined(DARWIN)
            char szSharedLibPath[8092];
            int rc = RTPathAppPrivateArch (szSharedLibPath, sizeof(szSharedLibPath));
            if (RT_SUCCESS(rc))
                sprintf ( path, "%s/%s%sspu%s", szSharedLibPath, DLL_PREFIX, name, DLL_SUFFIX );
            else
#endif /* DARWIN */
#ifdef VBOX
                snprintf ( path, sizeof(path), "%s%sspu%s", DLL_PREFIX, name, DLL_SUFFIX );
#else
                sprintf ( path, "%s%sspu%s", DLL_PREFIX, name, DLL_SUFFIX );
#endif
        }
        else
        {
#ifdef VBOX
                snprintf ( path, sizeof(path), "%s/%s%sspu%s", dir, DLL_PREFIX, name, DLL_SUFFIX );
#else
                sprintf ( path, "%s/%s%sspu%s", dir, DLL_PREFIX, name, DLL_SUFFIX );
#endif
        }
        return path;
}
Ejemplo n.º 4
0
/**
 * Loads a dynamic load library (/shared object) image file residing in the
 * RTPathAppPrivateArch() directory.
 *
 * Suffix is not required.
 *
 * @returns iprt status code.
 * @param   pszFilename Image filename. No path.
 * @param   phLdrMod    Where to store the handle to the loaded module.
 */
RTDECL(int) RTLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod)
{
    LogFlow(("RTLdrLoadAppPriv: pszFilename=%p:{%s} phLdrMod=%p\n", pszFilename, pszFilename, phLdrMod));

    /*
     * Validate input.
     */
    AssertPtrReturn(phLdrMod, VERR_INVALID_PARAMETER);
    *phLdrMod = NIL_RTLDRMOD;
    AssertPtrReturn(pszFilename, VERR_INVALID_PARAMETER);
    AssertMsgReturn(!RTPathHasPath(pszFilename), ("%s\n", pszFilename), VERR_INVALID_PARAMETER);

    /*
     * Check the filename.
     */
    size_t cchFilename = strlen(pszFilename);
    AssertMsgReturn(cchFilename < (RTPATH_MAX / 4) * 3, ("%zu\n", cchFilename), VERR_INVALID_PARAMETER);

    const char *pszSuffix = "";
    size_t cchSuffix = 0;
    if (!RTPathHasSuffix(pszFilename))
    {
        pszSuffix = RTLdrGetSuff();
        cchSuffix = strlen(pszSuffix);
    }

    /*
     * Construct the private arch path and check if the file exists.
     */
    char szPath[RTPATH_MAX];
    int rc = RTPathAppPrivateArch(szPath, sizeof(szPath) - 1 - cchSuffix - cchFilename);
    AssertRCReturn(rc, rc);

    char *psz = strchr(szPath, '\0');
    *psz++ = RTPATH_SLASH;
    memcpy(psz, pszFilename, cchFilename);
    psz += cchFilename;
    memcpy(psz, pszSuffix, cchSuffix + 1);

    if (!RTPathExists(szPath))
    {
        LogRel(("RTLdrLoadAppPriv: \"%s\" not found\n", szPath));
        return VERR_FILE_NOT_FOUND;
    }

    /*
     * Pass it on to RTLdrLoad.
     */
    rc = RTLdrLoad(szPath, phLdrMod);

    LogFlow(("RTLdrLoadAppPriv: returns %Rrc\n", rc));
    return rc;
}
Ejemplo n.º 5
0
STDMETHODIMP SystemProperties::COMGETTER(DefaultVRDEExtPack)(BSTR *aExtPack)
{
    CheckComArgOutPointerValid(aExtPack);

    AutoCaller autoCaller(this);
    HRESULT hrc = autoCaller.rc();
    if (SUCCEEDED(hrc))
    {
        AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
        Utf8Str strExtPack(m->strDefaultVRDEExtPack);
        if (strExtPack.isNotEmpty())
        {
            if (strExtPack.equals(VBOXVRDP_KLUDGE_EXTPACK_NAME))
                hrc = S_OK;
            else
#ifdef VBOX_WITH_EXTPACK
                hrc = mParent->getExtPackManager()->checkVrdeExtPack(&strExtPack);
#else
                hrc = setError(E_FAIL, tr("The extension pack '%s' does not exist"), strExtPack.c_str());
#endif
        }
        else
        {
#ifdef VBOX_WITH_EXTPACK
            hrc = mParent->getExtPackManager()->getDefaultVrdeExtPack(&strExtPack);
#endif
            if (strExtPack.isEmpty())
            {
                /*
                 * Klugde - check if VBoxVRDP.dll/.so/.dylib is installed.
                 * This is hardcoded uglyness, sorry.
                 */
                char szPath[RTPATH_MAX];
                int vrc = RTPathAppPrivateArch(szPath, sizeof(szPath));
                if (RT_SUCCESS(vrc))
                    vrc = RTPathAppend(szPath, sizeof(szPath), "VBoxVRDP");
                if (RT_SUCCESS(vrc))
                    vrc = RTStrCat(szPath, sizeof(szPath), RTLdrGetSuff());
                if (RT_SUCCESS(vrc) && RTFileExists(szPath))
                {
                    /* Illegal extpack name, so no conflict. */
                    strExtPack = VBOXVRDP_KLUDGE_EXTPACK_NAME;
                }
            }
        }

        if (SUCCEEDED(hrc))
            strExtPack.cloneTo(aExtPack);
    }

    return S_OK;
}
Ejemplo n.º 6
0
int main(int argc, char **argv)
{
    /*
     * Init IPRT.
     */
    int rc = RTR3InitExe(argc, &argv, 0);
    if (RT_FAILURE(rc))
        return RTMsgInitFailure(rc);

    /*
     * Locate a native DTrace command binary.
     */
    bool fIsNativeDTrace = false;
    char szDTraceCmd[RTPATH_MAX];
    szDTraceCmd[0] = '\0';

#if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD) || defined(RT_OS_LINUX) || defined(RT_OS_SOLARIS)
    /*
     * 1. Try native first on platforms where it's applicable.
     */
    static const char * const s_apszNativeDTrace[] =
    {
        "/usr/sbin/dtrace",
        "/sbin/dtrace",
        "/usr/bin/dtrace",
        "/bin/dtrace",
        "/usr/local/sbin/dtrace",
        "/usr/local/bin/dtrace"
    };
    if (!RTEnvExist("VBOX_DTRACE_NO_NATIVE"))
        for (uint32_t i = 0; i < RT_ELEMENTS(s_apszNativeDTrace); i++)
            if (RTFileExists(s_apszNativeDTrace[i]))
            {
                fIsNativeDTrace = true;
                strcpy(szDTraceCmd, s_apszNativeDTrace[i]);
# ifdef RT_OS_LINUX
                /** @todo Warn if the dtrace modules haven't been loaded or vboxdrv isn't
                 *        compiled against them. */
# endif
                break;
            }
    if (szDTraceCmd[0] == '\0')
#endif
    {
        /*
         * 2. VBoxDTrace extension pack installed?
         *
         * Note! We cannot use the COM API here because this program is usually
         *       run thru sudo or directly as root, even if the target
         *       VirtualBox process is running as regular user.  This is due to
         *       the privileges required to run dtrace scripts on a host.
         */
        rc = RTPathAppPrivateArch(szDTraceCmd, sizeof(szDTraceCmd));
        if (RT_SUCCESS(rc))
            rc = RTPathAppend(szDTraceCmd, sizeof(szDTraceCmd),
                              VBOX_EXTPACK_INSTALL_DIR RTPATH_SLASH_STR VBOX_EXTPACK_VBOXDTRACE_MANGLED_NAME);
        if (RT_SUCCESS(rc))
            rc = RTPathAppend(szDTraceCmd, sizeof(szDTraceCmd), RTBldCfgTargetDotArch());
        if (RT_SUCCESS(rc))
            rc = RTPathAppend(szDTraceCmd, sizeof(szDTraceCmd), "VBoxDTraceCmd");
        if (RT_SUCCESS(rc))
            rc = RTStrCat(szDTraceCmd, sizeof(szDTraceCmd), RTLdrGetSuff());
        if (RT_FAILURE(rc))
            return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error constructing extension pack path: %Rrc", rc);
        if (!RTFileExists(szDTraceCmd))
            return RTMsgErrorExit(RTEXITCODE_FAILURE,
                                  "Unable to find a DTrace implementation. VBoxDTrace Extension Pack installed?");
        fIsNativeDTrace = false;
    }


    /*
     * Construct a new command line that includes our libary.
     */
    char szDTraceLibDir[RTPATH_MAX];
    rc = RTPathAppPrivateNoArch(szDTraceLibDir, sizeof(szDTraceLibDir));
    if (RT_SUCCESS(rc))
        rc = RTPathAppend(szDTraceLibDir, sizeof(szDTraceLibDir), "dtrace" RTPATH_SLASH_STR "lib");
    if (RT_SUCCESS(rc))
        rc = RTPathAppend(szDTraceLibDir, sizeof(szDTraceLibDir), RTBldCfgTargetArch());
    if (RT_FAILURE(rc))
        return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error constructing dtrace library path for VBox: %Rrc", rc);

    char **papszArgs = (char **)RTMemAlloc((argc + 3) * sizeof(char *));
    if (!papszArgs)
        return RTMsgErrorExit(RTEXITCODE_FAILURE, "No memory for argument list.");

    int cArgs    = 1;
    papszArgs[0] = fIsNativeDTrace ? szDTraceCmd : argv[0];
    if (argc > 1)
    {
        papszArgs[cArgs++] = (char *)"-L";
        papszArgs[cArgs++] = szDTraceLibDir;
    }
    for (int i = 1; i < argc; i++)
        papszArgs[cArgs++] = argv[i];
    papszArgs[cArgs] = NULL;
    Assert(cArgs <= argc + 3);


    /*
     * The native DTrace we execute as a sub-process and wait for.
     */
    RTEXITCODE rcExit;
    if (fIsNativeDTrace)
    {
        RTPROCESS hProc;
        rc = RTProcCreate(szDTraceCmd, papszArgs, RTENV_DEFAULT, 0, &hProc);
        if (RT_SUCCESS(rc))
        {
            RTPROCSTATUS Status;
            rc = RTProcWait(hProc, RTPROCWAIT_FLAGS_BLOCK, &Status);
            if (RT_SUCCESS(rc))
            {
                if (Status.enmReason == RTPROCEXITREASON_NORMAL)
                    rcExit = (RTEXITCODE)Status.iStatus;
                else
                    rcExit = RTEXITCODE_FAILURE;
            }
            else
                rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error waiting for child process: %Rrc", rc);
        }
        else
            rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error executing '%s': %Rrc", szDTraceCmd, rc);
    }
    /*
     * While the VBoxDTrace we load and call the main function of.
     */
    else
    {
        RTERRINFOSTATIC ErrInfo;
        RTLDRMOD hMod;
        rc = SUPR3HardenedLdrLoadPlugIn(szDTraceCmd, &hMod, RTErrInfoInitStatic(&ErrInfo));
        if (RT_SUCCESS(rc))
        {
            PFNVBOXDTRACEMAIN pfnVBoxDTraceMain;
            rc = RTLdrGetSymbol(hMod, "VBoxDTraceMain", (void **)&pfnVBoxDTraceMain);
            if (RT_SUCCESS(rc))
                rcExit = (RTEXITCODE)pfnVBoxDTraceMain(cArgs, papszArgs);
            else
                rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error locating 'VBoxDTraceMain' in '%s': %Rrc", szDTraceCmd, rc);
        }
        else
            rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Error loading '%s': %Rrc (%s)", szDTraceCmd, rc, ErrInfo.szMsg);
    }
    return rcExit;
}
Ejemplo n.º 7
0
/**
 * @copydoc RTPathAppPrivateArch
 */
DECLHIDDEN(int) supR3HardenedPathAppPrivateArch(char *pszPath, size_t cchPath)
{
    return RTPathAppPrivateArch(pszPath, cchPath);
}
Ejemplo n.º 8
0
/**
 * Initializes the COM runtime.
 *
 * This method must be called on each thread of the client application that
 * wants to access COM facilities. The initialization must be performed before
 * calling any other COM method or attempting to instantiate COM objects.
 *
 * On platforms using XPCOM, this method uses the following scheme to search for
 * XPCOM runtime:
 *
 * 1. If the VBOX_APP_HOME environment variable is set, the path it specifies
 *    is used to search XPCOM libraries and components. If this method fails to
 *    initialize XPCOM runtime using this path, it will immediately return a
 *    failure and will NOT check for other paths as described below.
 *
 * 2. If VBOX_APP_HOME is not set, this methods tries the following paths in the
 *    given order:
 *
 *    a) Compiled-in application data directory (as returned by
 *       RTPathAppPrivateArch())
 *    b) "/usr/lib/virtualbox" (Linux only)
 *    c) "/opt/VirtualBox" (Linux only)
 *
 *    The first path for which the initialization succeeds will be used.
 *
 * On MS COM platforms, the COM runtime is provided by the system and does not
 * need to be searched for.
 *
 * Once the COM subsystem is no longer necessary on a given thread, Shutdown()
 * must be called to free resources allocated for it. Note that a thread may
 * call Initialize() several times but for each of tese calls there must be a
 * corresponding Shutdown() call.
 *
 * @return S_OK on success and a COM result code in case of failure.
 */
HRESULT Initialize(bool fGui)
{
    HRESULT rc = E_FAIL;

#if !defined(VBOX_WITH_XPCOM)

    /*
     * We initialize COM in GUI thread in STA, to be compliant with QT and
     * OLE requirments (for example to allow D&D), while other threads
     * initialized in regular MTA. To allow fast proxyless access from
     * GUI thread to COM objects, we explicitly provide our COM objects
     * with free threaded marshaller.
     * !!!!! Please think twice before touching this code !!!!!
     */
    DWORD flags = fGui ?
                  COINIT_APARTMENTTHREADED
                | COINIT_SPEED_OVER_MEMORY
                :
                  COINIT_MULTITHREADED
                | COINIT_DISABLE_OLE1DDE
                | COINIT_SPEED_OVER_MEMORY;

    rc = CoInitializeEx(NULL, flags);

    /* the overall result must be either S_OK or S_FALSE (S_FALSE means
     * "already initialized using the same apartment model") */
    AssertMsg(rc == S_OK || rc == S_FALSE, ("rc=%08X\n", rc));

    /* To be flow compatible with the XPCOM case, we return here if this isn't
     * the main thread or if it isn't its first initialization call.
     * Note! CoInitializeEx and CoUninitialize does it's own reference
     *       counting, so this exercise is entirely for the EventQueue init. */
    bool fRc;
    RTTHREAD hSelf = RTThreadSelf();
    if (hSelf != NIL_RTTHREAD)
        ASMAtomicCmpXchgHandle(&gCOMMainThread, hSelf, NIL_RTTHREAD, fRc);
    else
        fRc = false;

    if (fGui)
        Assert(RTThreadIsMain(hSelf));

    if (!fRc)
    {
        if (   gCOMMainThread == hSelf
            && SUCCEEDED(rc))
            gCOMMainInitCount++;

        AssertComRC(rc);
        return rc;
    }
    Assert(RTThreadIsMain(hSelf));

    /* this is the first main thread initialization */
    Assert(gCOMMainInitCount == 0);
    if (SUCCEEDED(rc))
        gCOMMainInitCount = 1;

#else /* !defined (VBOX_WITH_XPCOM) */

    /* Unused here */
    NOREF(fGui);

    if (ASMAtomicXchgBool(&gIsXPCOMInitialized, true) == true)
    {
        /* XPCOM is already initialized on the main thread, no special
         * initialization is necessary on additional threads. Just increase
         * the init counter if it's a main thread again (to correctly support
         * nested calls to Initialize()/Shutdown() for compatibility with
         * Win32). */

        nsCOMPtr<nsIEventQueue> eventQ;
        rc = NS_GetMainEventQ(getter_AddRefs(eventQ));

        if (NS_SUCCEEDED(rc))
        {
            PRBool isOnMainThread = PR_FALSE;
            rc = eventQ->IsOnCurrentThread(&isOnMainThread);
            if (NS_SUCCEEDED(rc) && isOnMainThread)
                ++gXPCOMInitCount;
        }

        AssertComRC(rc);
        return rc;
    }
    Assert(RTThreadIsMain(RTThreadSelf()));

    /* this is the first initialization */
    gXPCOMInitCount = 1;
    bool const fInitEventQueues = true;

    /* prepare paths for registry files */
    char szCompReg[RTPATH_MAX];
    char szXptiDat[RTPATH_MAX];

    int vrc = GetVBoxUserHomeDirectory(szCompReg, sizeof(szCompReg));
    AssertRCReturn(vrc, NS_ERROR_FAILURE);
    strcpy(szXptiDat, szCompReg);

    vrc = RTPathAppend(szCompReg, sizeof(szCompReg), "compreg.dat");
    AssertRCReturn(vrc, NS_ERROR_FAILURE);
    vrc = RTPathAppend(szXptiDat, sizeof(szXptiDat), "xpti.dat");
    AssertRCReturn(vrc, NS_ERROR_FAILURE);

    LogFlowFunc(("component registry  : \"%s\"\n", szCompReg));
    LogFlowFunc(("XPTI data file      : \"%s\"\n", szXptiDat));

#if defined (XPCOM_GLUE)
    XPCOMGlueStartup(nsnull);
#endif

    static const char *kAppPathsToProbe[] =
    {
        NULL, /* 0: will use VBOX_APP_HOME */
        NULL, /* 1: will try RTPathAppPrivateArch() */
#ifdef RT_OS_LINUX
        "/usr/lib/virtualbox",
        "/opt/VirtualBox",
#elif RT_OS_SOLARIS
        "/opt/VirtualBox/amd64",
        "/opt/VirtualBox/i386",
#elif RT_OS_DARWIN
        "/Application/VirtualBox.app/Contents/MacOS",
#endif
    };

    /* Find out the directory where VirtualBox binaries are located */
    for (size_t i = 0; i < RT_ELEMENTS(kAppPathsToProbe); ++ i)
    {
        char szAppHomeDir[RTPATH_MAX];

        if (i == 0)
        {
            /* Use VBOX_APP_HOME if present */
            vrc = RTEnvGetEx(RTENV_DEFAULT, "VBOX_APP_HOME", szAppHomeDir, sizeof(szAppHomeDir), NULL);
            if (vrc == VERR_ENV_VAR_NOT_FOUND)
                continue;
            AssertRC(vrc);
        }
        else if (i == 1)
        {
            /* Use RTPathAppPrivateArch() first */
            vrc = RTPathAppPrivateArch(szAppHomeDir, sizeof(szAppHomeDir));
            AssertRC(vrc);
        }
        else
        {
            /* Iterate over all other paths */
            szAppHomeDir[RTPATH_MAX - 1] = '\0';
            strncpy(szAppHomeDir, kAppPathsToProbe[i], RTPATH_MAX - 1);
            vrc = VINF_SUCCESS;
        }
        if (RT_FAILURE(vrc))
        {
            rc = NS_ERROR_FAILURE;
            continue;
        }

        char szCompDir[RTPATH_MAX];
        vrc = RTPathAppend(strcpy(szCompDir, szAppHomeDir), sizeof(szCompDir), "components");
        if (RT_FAILURE(vrc))
        {
            rc = NS_ERROR_FAILURE;
            continue;
        }
        LogFlowFunc(("component directory : \"%s\"\n", szCompDir));

        nsCOMPtr<DirectoryServiceProvider> dsProv;
        dsProv = new DirectoryServiceProvider();
        if (dsProv)
            rc = dsProv->init(szCompReg, szXptiDat, szCompDir, szAppHomeDir);
        else
            rc = NS_ERROR_OUT_OF_MEMORY;
        if (NS_FAILED(rc))
            break;

        /* Setup the application path for NS_InitXPCOM2. Note that we properly
         * answer the NS_XPCOM_CURRENT_PROCESS_DIR query in our directory
         * service provider but it seems to be activated after the directory
         * service is used for the first time (see the source NS_InitXPCOM2). So
         * use the same value here to be on the safe side. */
        nsCOMPtr <nsIFile> appDir;
        {
            char *appDirCP = NULL;
            vrc = RTStrUtf8ToCurrentCP(&appDirCP, szAppHomeDir);
            if (RT_SUCCESS(vrc))
            {
                nsCOMPtr<nsILocalFile> file;
                rc = NS_NewNativeLocalFile(nsEmbedCString(appDirCP),
                                           PR_FALSE, getter_AddRefs(file));
                if (NS_SUCCEEDED(rc))
                    appDir = do_QueryInterface(file, &rc);

                RTStrFree(appDirCP);
            }
            else
                rc = NS_ERROR_FAILURE;
        }
        if (NS_FAILED(rc))
            break;

        /* Set VBOX_XPCOM_HOME to the same app path to make XPCOM sources that
         * still use it instead of the directory service happy */
        vrc = RTEnvSetEx(RTENV_DEFAULT, "VBOX_XPCOM_HOME", szAppHomeDir);
        AssertRC(vrc);

        /* Finally, initialize XPCOM */
        {
            nsCOMPtr<nsIServiceManager> serviceManager;
            rc = NS_InitXPCOM2(getter_AddRefs(serviceManager), appDir, dsProv);
            if (NS_SUCCEEDED(rc))
            {
                nsCOMPtr<nsIComponentRegistrar> registrar =
                    do_QueryInterface(serviceManager, &rc);
                if (NS_SUCCEEDED(rc))
                {
                    rc = registrar->AutoRegister(nsnull);
                    if (NS_SUCCEEDED(rc))
                    {
                        /* We succeeded, stop probing paths */
                        LogFlowFunc(("Succeeded.\n"));
                        break;
                    }
                }
            }
        }

        /* clean up before the new try */
        rc = NS_ShutdownXPCOM(nsnull);

        if (i == 0)
        {
            /* We failed with VBOX_APP_HOME, don't probe other paths */
            break;
        }
    }

#endif /* !defined (VBOX_WITH_XPCOM) */

    // for both COM and XPCOM, we only get here if this is the main thread;
    // only then initialize the autolock system (AutoLock.cpp)
    Assert(RTThreadIsMain(RTThreadSelf()));
    util::InitAutoLockSystem();

    AssertComRC(rc);

    /*
     * Init the main event queue (ASSUMES it cannot fail).
     */
    if (SUCCEEDED(rc))
        EventQueue::init();

    return rc;
}