C++ RT_FAILURE函数代码示例

int NetIfCreateHostOnlyNetworkInterface(VirtualBox *pVBox,
                                        IHostNetworkInterface **aHostNetworkInterface,
                                        IProgress **aProgress,
                                        const char *pcszName)
{
#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
    /* create a progress object */
    ComObjPtr<Progress> progress;
    progress.createObject();

    ComPtr<IHost> host;
    HRESULT hrc = pVBox->COMGETTER(Host)(host.asOutParam());
    if (SUCCEEDED(hrc))
    {
        hrc = progress->init(pVBox, host,
                             Bstr("Creating host only network interface").raw(),
                             FALSE /* aCancelable */);
        if (SUCCEEDED(hrc))
        {
            progress.queryInterfaceTo(aProgress);

            char szAdpCtl[RTPATH_MAX];
            int rc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " add"));
            if (RT_FAILURE(rc))
            {
                progress->notifyComplete(E_FAIL,
                                         COM_IIDOF(IHostNetworkInterface),
                                         HostNetworkInterface::getStaticComponentName(),
                                         "Failed to get program path, rc=%Rrc\n", rc);
                return rc;
            }
            strcat(szAdpCtl, "/" VBOXNETADPCTL_NAME " ");
            if (pcszName && strlen(pcszName) <= RTPATH_MAX - strlen(szAdpCtl) - sizeof(" add"))
            {
                strcat(szAdpCtl, pcszName);
                strcat(szAdpCtl, " add");
            }
            else
                strcat(szAdpCtl, "add");
            FILE *fp = popen(szAdpCtl, "r");

            if (fp)
            {
                char szBuf[VBOXNET_MAX_SHORT_NAME];
                if (fgets(szBuf, sizeof(szBuf), fp))
                {
                    char *pLast = szBuf + strlen(szBuf) - 1;
                    if (pLast >= szBuf && *pLast == '\n')
                        *pLast = 0;

                    size_t cbNameLen = strlen(szBuf) + 1;
                    PNETIFINFO pInfo = (PNETIFINFO)RTMemAllocZ(RT_OFFSETOF(NETIFINFO, szName[cbNameLen]));
                    if (!pInfo)
                        rc = VERR_NO_MEMORY;
                    else
                    {
                        strcpy(pInfo->szShortName, szBuf);
                        strcpy(pInfo->szName, szBuf);
                        rc = NetIfGetConfigByName(pInfo);
                        if (RT_FAILURE(rc))
                        {
                            progress->notifyComplete(E_FAIL,
                                                     COM_IIDOF(IHostNetworkInterface),
                                                     HostNetworkInterface::getStaticComponentName(),
                                                     "Failed to get config info for %s (as reported by '" VBOXNETADPCTL_NAME " add')\n", szBuf);
                        }
                        else
                        {
                            Bstr IfName(szBuf);
                            /* create a new uninitialized host interface object */
                            ComObjPtr<HostNetworkInterface> iface;
                            iface.createObject();
                            iface->init(IfName, HostNetworkInterfaceType_HostOnly, pInfo);
                            iface->setVirtualBox(pVBox);
                            iface.queryInterfaceTo(aHostNetworkInterface);
                        }
                        RTMemFree(pInfo);
                    }
                }
                if ((rc = pclose(fp)) != 0)
                {
                    progress->notifyComplete(E_FAIL,
                                             COM_IIDOF(IHostNetworkInterface),
                                             HostNetworkInterface::getStaticComponentName(),
                                             "Failed to execute '"VBOXNETADPCTL_NAME " add' (exit status: %d)", rc);
                    rc = VERR_INTERNAL_ERROR;
                }
            }
            if (RT_SUCCESS(rc))
                progress->notifyComplete(rc);
        }
    }

    return hrc;

#else
    NOREF(pVBox);
    NOREF(aHostNetworkInterface);
    NOREF(aProgress);
    return VERR_NOT_IMPLEMENTED;
//.........这里部分代码省略.........

/**
 * Verifies the manifest and its signature.
 *
 * @returns VBox status code, failures with message.
 * @param   hOurManifest    The manifest we compiled.
 * @param   hManifestFile   The manifest file in the extension pack.
 * @param   hSignatureFile  The manifest signature file.
 * @param   pszError            Where to store an error message on failure.
 * @param   cbError             The size of the buffer @a pszError points to.
 */
static int vboxExtPackVerifyManifestAndSignature(RTMANIFEST hOurManifest, RTVFSFILE hManifestFile, RTVFSFILE hSignatureFile,
                                                 char *pszError, size_t cbError)
{
    /*
     * Read the manifest from the extension pack.
     */
    int rc = RTVfsFileSeek(hManifestFile, 0, RTFILE_SEEK_BEGIN, NULL);
    if (RT_FAILURE(rc))
        return vboxExtPackReturnError(rc, pszError, cbError, "RTVfsFileSeek failed: %Rrc", rc);

    RTMANIFEST hTheirManifest;
    rc = RTManifestCreate(0 /*fFlags*/, &hTheirManifest);
    if (RT_FAILURE(rc))
        return vboxExtPackReturnError(rc, pszError, cbError, "RTManifestCreate failed: %Rrc", rc);

    RTVFSIOSTREAM hVfsIos = RTVfsFileToIoStream(hManifestFile);
    rc = RTManifestReadStandard(hTheirManifest, hVfsIos);
    RTVfsIoStrmRelease(hVfsIos);
    if (RT_SUCCESS(rc))
    {
        /*
         * Compare the manifests.
         */
        static const char *s_apszIgnoreEntries[] =
        {
            VBOX_EXTPACK_MANIFEST_NAME,
            VBOX_EXTPACK_SIGNATURE_NAME,
            "./" VBOX_EXTPACK_MANIFEST_NAME,
            "./" VBOX_EXTPACK_SIGNATURE_NAME,
            NULL
        };
        char szError[RTPATH_MAX];
        rc = RTManifestEqualsEx(hOurManifest, hTheirManifest, &s_apszIgnoreEntries[0], NULL,
                                RTMANIFEST_EQUALS_IGN_MISSING_ATTRS /*fFlags*/,
                                szError, sizeof(szError));
        if (RT_SUCCESS(rc))
        {
            /*
             * Validate the manifest file signature.
             */
            /** @todo implement signature stuff */
            NOREF(hSignatureFile);

        }
        else if (rc == VERR_NOT_EQUAL && szError[0])
            vboxExtPackSetError(pszError, cbError, "Manifest mismatch: %s", szError);
        else
            vboxExtPackSetError(pszError, cbError, "RTManifestEqualsEx failed: %Rrc", rc);
#if 0
        RTVFSIOSTREAM hVfsIosStdOut = NIL_RTVFSIOSTREAM;
        RTVfsIoStrmFromStdHandle(RTHANDLESTD_OUTPUT, RTFILE_O_WRITE, true, &hVfsIosStdOut);
        RTVfsIoStrmWrite(hVfsIosStdOut, "Our:\n", sizeof("Our:\n") - 1, true, NULL);
        RTManifestWriteStandard(hOurManifest, hVfsIosStdOut);
        RTVfsIoStrmWrite(hVfsIosStdOut, "Their:\n", sizeof("Their:\n") - 1, true, NULL);
        RTManifestWriteStandard(hTheirManifest, hVfsIosStdOut);
#endif
    }
    else
        vboxExtPackSetError(pszError, cbError, "Error parsing '%s': %Rrc", VBOX_EXTPACK_MANIFEST_NAME, rc);

    RTManifestRelease(hTheirManifest);
    return rc;
}

RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags)
{
    /*
     * Validate input.
     */
    AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
    AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
    AssertPtrReturn(pObjInfo, VERR_INVALID_POINTER);
    AssertMsgReturn(    enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING
                    &&  enmAdditionalAttribs <= RTFSOBJATTRADD_LAST,
                    ("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs),
                    VERR_INVALID_PARAMETER);
    AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);

    /*
     * Query file info.
     */
    WIN32_FILE_ATTRIBUTE_DATA Data;
    PRTUTF16 pwszPath;
    int rc = RTStrToUtf16(pszPath, &pwszPath);
    if (RT_FAILURE(rc))
        return rc;
    if (!GetFileAttributesExW(pwszPath, GetFileExInfoStandard, &Data))
    {
        /* Fallback to FindFileFirst in case of sharing violation. */
        if (GetLastError() == ERROR_SHARING_VIOLATION)
        {
            WIN32_FIND_DATAW FindData;
            HANDLE hDir = FindFirstFileW(pwszPath, &FindData);
            if (hDir == INVALID_HANDLE_VALUE)
            {
                rc = RTErrConvertFromWin32(GetLastError());
                RTUtf16Free(pwszPath);
                return rc;
            }
            FindClose(hDir);

            Data.dwFileAttributes   = FindData.dwFileAttributes;
            Data.ftCreationTime     = FindData.ftCreationTime;
            Data.ftLastAccessTime   = FindData.ftLastAccessTime;
            Data.ftLastWriteTime    = FindData.ftLastWriteTime;
            Data.nFileSizeHigh      = FindData.nFileSizeHigh;
            Data.nFileSizeLow       = FindData.nFileSizeLow;
        }
        else
        {
            rc = RTErrConvertFromWin32(GetLastError());
            RTUtf16Free(pwszPath);
            return rc;
        }
    }

    /*
     * Getting the information for the link target is a bit annoying and
     * subject to the same access violation mess as above.. :/
     */
    /** @todo we're too lazy wrt to error paths here... */
    if (   (fFlags & RTPATH_F_FOLLOW_LINK)
        && (Data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
    {
        HANDLE hFinal = CreateFileW(pwszPath,
                                    GENERIC_READ,
                                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
                                    NULL,
                                    OPEN_EXISTING,
                                    FILE_FLAG_BACKUP_SEMANTICS,
                                    NULL);
        if (hFinal != INVALID_HANDLE_VALUE)
        {
            BY_HANDLE_FILE_INFORMATION FileData;
            if (GetFileInformationByHandle(hFinal, &FileData))
            {
                Data.dwFileAttributes   = FileData.dwFileAttributes;
                Data.ftCreationTime     = FileData.ftCreationTime;
                Data.ftLastAccessTime   = FileData.ftLastAccessTime;
                Data.ftLastWriteTime    = FileData.ftLastWriteTime;
                Data.nFileSizeHigh      = FileData.nFileSizeHigh;
                Data.nFileSizeLow       = FileData.nFileSizeLow;
            }
            CloseHandle(hFinal);
        }
        else if (GetLastError() != ERROR_SHARING_VIOLATION)
        {
            rc = RTErrConvertFromWin32(GetLastError());
            RTUtf16Free(pwszPath);
            return rc;
        }
    }

    RTUtf16Free(pwszPath);

    /*
     * Setup the returned data.
     */
    pObjInfo->cbObject    = ((uint64_t)Data.nFileSizeHigh << 32)
                          |  (uint64_t)Data.nFileSizeLow;
    pObjInfo->cbAllocated = pObjInfo->cbObject;

    Assert(sizeof(uint64_t) == sizeof(Data.ftCreationTime));
    RTTimeSpecSetNtTime(&pObjInfo->BirthTime,         *(uint64_t *)&Data.ftCreationTime);
//.........这里部分代码省略.........

static int rtCrPkcs7SignedData_CheckSanityExtra(PCRTCRPKCS7SIGNEDDATA pSignedData, uint32_t fFlags,
                                                PRTERRINFO pErrInfo, const char *pszErrorTag)
{
    bool const fAuthenticode = RT_BOOL(fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_AUTHENTICODE);

    //RTAsn1Dump(&pSignedData->SeqCore.Asn1Core, 0, 0, RTAsn1DumpStrmPrintfV, g_pStdOut);

    if (   RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V1) != 0
        && RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V3) != 0
        && RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V4) != 0
        && RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V5) != 0)
        return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNED_DATA_VERSION, "SignedData version is %llu, expected %u",
                             pSignedData->Version.uValue.u, RTCRPKCS7SIGNEDDATA_V1);

    /*
     * DigestAlgorithms.
     */
    if (pSignedData->DigestAlgorithms.cItems == 0) /** @todo this might be too strict */
        return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_SIGNED_DATA_NO_DIGEST_ALGOS, "SignedData.DigestAlgorithms is empty");
    if (pSignedData->DigestAlgorithms.cItems != 1 && fAuthenticode)
        return RTErrInfoSetF(pErrInfo, VERR_CR_SPC_NOT_EXACTLY_ONE_DIGEST_ALGO,
                             "SignedData.DigestAlgorithms has more than one algorithm (%u)",
                             pSignedData->DigestAlgorithms.cItems);

    if (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_ONLY_KNOWN_HASH)
        for (uint32_t i = 0; i < pSignedData->DigestAlgorithms.cItems; i++)
        {
            if (RTCrX509AlgorithmIdentifier_QueryDigestType(&pSignedData->DigestAlgorithms.paItems[i]) == RTDIGESTTYPE_INVALID)
                return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_UNKNOWN_DIGEST_ALGORITHM,
                                     "SignedData.DigestAlgorithms[%i] is not known: %s",
                                     i, pSignedData->DigestAlgorithms.paItems[i].Algorithm.szObjId);
            if (pSignedData->DigestAlgorithms.paItems[i].Parameters.enmType != RTASN1TYPE_NULL)
                return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_DIGEST_PARAMS_NOT_IMPL,
                                     "SignedData.DigestAlgorithms[%i] has parameters: tag=%u",
                                     i, pSignedData->DigestAlgorithms.paItems[i].Parameters.u.Core.uTag);
        }

    /*
     * Certificates.
     */
    if (   (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_SIGNING_CERT_PRESENT)
        && pSignedData->Certificates.cItems == 0)
        return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_NO_CERTIFICATES,
                            "SignedData.Certifcates is empty, expected at least one certificate");

    /*
     * Crls.
     */
    if (fAuthenticode && RTAsn1Core_IsPresent(&pSignedData->Crls))
        return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_EXPECTED_NO_CRLS,
                            "SignedData.Crls is not empty as expected for authenticode.");
    /** @todo check Crls when they become important. */

    /*
     * SignerInfos.
     */
    if (pSignedData->SignerInfos.cItems == 0)
        return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_NO_SIGNER_INFOS, "SignedData.SignerInfos is empty?");
    if (fAuthenticode && pSignedData->SignerInfos.cItems != 1)
        return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_EXPECTED_ONE_SIGNER_INFO,
                             "SignedData.SignerInfos should have one entry for authenticode: %u",
                             pSignedData->SignerInfos.cItems);

    for (uint32_t i = 0; i < pSignedData->SignerInfos.cItems; i++)
    {
        PCRTCRPKCS7SIGNERINFO pSignerInfo = &pSignedData->SignerInfos.paItems[i];

        if (RTAsn1Integer_UnsignedCompareWithU32(&pSignerInfo->Version, RTCRPKCS7SIGNERINFO_V1) != 0)
            return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_INFO_VERSION,
                                 "SignedData.SignerInfos[%u] version is %llu, expected %u",
                                 i, pSignerInfo->Version.uValue.u, RTCRPKCS7SIGNERINFO_V1);

        /* IssuerAndSerialNumber. */
        int rc = RTCrX509Name_CheckSanity(&pSignerInfo->IssuerAndSerialNumber.Name, 0, pErrInfo,
                                          "SignedData.SignerInfos[#].IssuerAndSerialNumber.Name");
        if (RT_FAILURE(rc))
            return rc;

        if (pSignerInfo->IssuerAndSerialNumber.SerialNumber.Asn1Core.cb == 0)
            return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_INFO_NO_ISSUER_SERIAL_NO,
                                 "SignedData.SignerInfos[%u].IssuerAndSerialNumber.SerialNumber is missing (zero length)", i);

        PCRTCRX509CERTIFICATE pCert;
        pCert = RTCrPkcs7SetOfCerts_FindX509ByIssuerAndSerialNumber(&pSignedData->Certificates,
                                                                    &pSignerInfo->IssuerAndSerialNumber.Name,
                                                                    &pSignerInfo->IssuerAndSerialNumber.SerialNumber);
        if (!pCert && (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_SIGNING_CERT_PRESENT))
            return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_CERT_NOT_SHIPPED,
                                 "SignedData.SignerInfos[%u].IssuerAndSerialNumber not found in T0.Certificates", i);

        /* DigestAlgorithm */
        uint32_t j = 0;
        while (   j < pSignedData->DigestAlgorithms.cItems
               && RTCrX509AlgorithmIdentifier_Compare(&pSignedData->DigestAlgorithms.paItems[j],
                                                      &pSignerInfo->DigestAlgorithm) != 0)
            j++;
        if (j >= pSignedData->DigestAlgorithms.cItems)
            return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_DIGEST_ALGO_NOT_FOUND_IN_LIST,
                                 "SignedData.SignerInfos[%u].DigestAlgorithm (%s) not found in SignedData.DigestAlgorithms",
                                 i, pSignerInfo->DigestAlgorithm.Algorithm.szObjId);
//.........这里部分代码省略.........

/**
 * Validates the extension pack tarball prior to unpacking.
 *
 * Operations performed:
 *      - Mandatory files.
 *      - Manifest check.
 *      - Manifest seal check.
 *      - XML check, match name.
 *
 * @returns VBox status code, failures with message.
 * @param   hTarballFile        The handle to open the @a pszTarball file.
 * @param   pszExtPackName      The name of the extension pack name.  NULL if
 *                              the name is not fixed.
 * @param   pszTarball          The name of the tarball in case we have to
 *                              complain about something.
 * @param   pszTarballDigest    The SHA-256 digest of the tarball.  Empty string
 *                              if no digest available.
 * @param   pszError            Where to store an error message on failure.
 * @param   cbError             The size of the buffer @a pszError points to.
 * @param   phValidManifest     Where to optionally return the handle to fully
 *                              validated the manifest for the extension pack.
 *                              This includes all files.
 * @param   phXmlFile           Where to optionally return the memorized XML
 *                              file.
 * @param   pStrDigest          Where to return the digest of the file.
 *                              Optional.
 */
int VBoxExtPackValidateTarball(RTFILE hTarballFile, const char *pszExtPackName,
                               const char *pszTarball, const char *pszTarballDigest,
                               char *pszError, size_t cbError,
                               PRTMANIFEST phValidManifest, PRTVFSFILE phXmlFile, RTCString *pStrDigest)
{
    /*
     * Clear return values.
     */
    if (phValidManifest)
        *phValidManifest = NIL_RTMANIFEST;
    if (phXmlFile)
        *phXmlFile = NIL_RTVFSFILE;
    Assert(cbError > 1);
    *pszError = '\0';
    NOREF(pszTarball);

    /*
     * Open the tar.gz filesystem stream and set up an manifest in-memory file.
     */
    RTMANIFEST      hFileManifest;
    RTVFSFSSTREAM   hTarFss;
    int rc = VBoxExtPackOpenTarFss(hTarballFile, pszError, cbError, &hTarFss, &hFileManifest);
    if (RT_FAILURE(rc))
        return rc;

    RTMANIFEST hOurManifest;
    rc = RTManifestCreate(0 /*fFlags*/, &hOurManifest);
    if (RT_SUCCESS(rc))
    {
        /*
         * Process the tarball (would be nice to move this to a function).
         */
        RTVFSFILE hXmlFile       = NIL_RTVFSFILE;
        RTVFSFILE hManifestFile  = NIL_RTVFSFILE;
        RTVFSFILE hSignatureFile = NIL_RTVFSFILE;
        for (;;)
        {
            /*
             * Get the next stream object.
             */
            char           *pszName;
            RTVFSOBJ        hVfsObj;
            RTVFSOBJTYPE    enmType;
            rc = RTVfsFsStrmNext(hTarFss, &pszName, &enmType, &hVfsObj);
            if (RT_FAILURE(rc))
            {
                if (rc != VERR_EOF)
                    vboxExtPackSetError(pszError, cbError, "RTVfsFsStrmNext failed: %Rrc", rc);
                else
                    rc = VINF_SUCCESS;
                break;
            }
            const char     *pszAdjName = pszName[0] == '.' && pszName[1] == '/' ? &pszName[2] : pszName;

            /*
             * Check the type & name validity, performing special tests on
             * standard extension pack member files.
             *
             * N.B. We will always reach the end of the loop before breaking on
             *      failure - cleanup reasons.
             */
            rc = VBoxExtPackValidateMember(pszName, enmType, hVfsObj, pszError, cbError);
            if (RT_SUCCESS(rc))
            {
                PRTVFSFILE phVfsFile = NULL;
                if (!strcmp(pszAdjName, VBOX_EXTPACK_DESCRIPTION_NAME))
                    phVfsFile = &hXmlFile;
                else if (!strcmp(pszAdjName, VBOX_EXTPACK_MANIFEST_NAME))
                    phVfsFile = &hManifestFile;
                else if (!strcmp(pszAdjName, VBOX_EXTPACK_SIGNATURE_NAME))
                    phVfsFile = &hSignatureFile;
                else if (!strncmp(pszAdjName, VBOX_EXTPACK_LICENSE_NAME_PREFIX, sizeof(VBOX_EXTPACK_LICENSE_NAME_PREFIX) - 1))
                    rc = VBoxExtPackValidateStandardFile(pszAdjName, enmType, &hVfsObj, NULL, pszError, cbError);
//.........这里部分代码省略.........

/**
 * The PDM thread function.
 *
 * @returns return from pfnThread.
 *
 * @param   Thread  The thread handle.
 * @param   pvUser  Pointer to the PDMTHREAD structure.
 */
static DECLCALLBACK(int) pdmR3ThreadMain(RTTHREAD Thread, void *pvUser)
{
    PPDMTHREAD pThread = (PPDMTHREAD)pvUser;
    Log(("PDMThread: Initializing thread %RTthrd / %p / '%s'...\n", Thread, pThread, RTThreadGetName(Thread)));
    pThread->Thread = Thread;

    PUVM pUVM = pThread->Internal.s.pVM->pUVM;
    if (   pUVM->pVmm2UserMethods
        && pUVM->pVmm2UserMethods->pfnNotifyPdmtInit)
        pUVM->pVmm2UserMethods->pfnNotifyPdmtInit(pUVM->pVmm2UserMethods, pUVM);

    /*
     * The run loop.
     *
     * It handles simple thread functions which returns when they see a suspending
     * request and leaves the PDMR3ThreadIAmSuspending and PDMR3ThreadIAmRunning
     * parts to us.
     */
    int rc;
    for (;;)
    {
        switch (pThread->Internal.s.enmType)
        {
            case PDMTHREADTYPE_DEVICE:
                rc = pThread->u.Dev.pfnThread(pThread->u.Dev.pDevIns, pThread);
                break;

            case PDMTHREADTYPE_USB:
                rc = pThread->u.Usb.pfnThread(pThread->u.Usb.pUsbIns, pThread);
                break;

            case PDMTHREADTYPE_DRIVER:
                rc = pThread->u.Drv.pfnThread(pThread->u.Drv.pDrvIns, pThread);
                break;

            case PDMTHREADTYPE_INTERNAL:
                rc = pThread->u.Int.pfnThread(pThread->Internal.s.pVM, pThread);
                break;

            case PDMTHREADTYPE_EXTERNAL:
                rc = pThread->u.Ext.pfnThread(pThread);
                break;

            default:
                AssertMsgFailed(("%d\n", pThread->Internal.s.enmType));
                rc = VERR_PDM_THREAD_IPE_1;
                break;
        }
        if (RT_FAILURE(rc))
            break;

        /*
         * If this is a simple thread function, the state will be suspending
         * or initializing now. If it isn't we're supposed to terminate.
         */
        if (    pThread->enmState != PDMTHREADSTATE_SUSPENDING
            &&  pThread->enmState != PDMTHREADSTATE_INITIALIZING)
        {
            Assert(pThread->enmState == PDMTHREADSTATE_TERMINATING);
            break;
        }
        rc = PDMR3ThreadIAmSuspending(pThread);
        if (RT_FAILURE(rc))
            break;
        if (pThread->enmState != PDMTHREADSTATE_RESUMING)
        {
            Assert(pThread->enmState == PDMTHREADSTATE_TERMINATING);
            break;
        }

        rc = PDMR3ThreadIAmRunning(pThread);
        if (RT_FAILURE(rc))
            break;
    }

    if (RT_FAILURE(rc))
        LogRel(("PDMThread: Thread '%s' (%RTthrd) quit unexpectedly with rc=%Rrc.\n", RTThreadGetName(Thread), Thread, rc));

    /*
     * Advance the state to terminating and then on to terminated.
     */
    for (;;)
    {
        PDMTHREADSTATE enmState = pThread->enmState;
        if (    enmState == PDMTHREADSTATE_TERMINATING
            ||  pdmR3AtomicCmpXchgState(pThread, PDMTHREADSTATE_TERMINATING, enmState))
            break;
    }

    ASMAtomicXchgSize(&pThread->enmState, PDMTHREADSTATE_TERMINATED);
    int rc2 = RTThreadUserSignal(Thread); AssertRC(rc2);

//.........这里部分代码省略.........

/**
 * Creates a diff of the changes between the streams @a pLeft and @a pRight.
 *
 * This currently only implements the simplest diff format, so no contexts.
 *
 * Also, note that we won't detect differences in the final newline of the
 * streams.
 *
 * @returns The number of differences.
 * @param   pszFilename         The filename.
 * @param   pLeft               The left side stream.
 * @param   pRight              The right side stream.
 * @param   fIgnoreEol          Whether to ignore end of line markers.
 * @param   fIgnoreLeadingWhite Set if leading white space should be ignored.
 * @param   fIgnoreTrailingWhite  Set if trailing white space should be ignored.
 * @param   fSpecialChars       Whether to print special chars in a human
 *                              readable form or not.
 * @param   cchTab              The tab size.
 * @param   pDiff               Where to write the diff.
 */
size_t ScmDiffStreams(const char *pszFilename, PSCMSTREAM pLeft, PSCMSTREAM pRight, bool fIgnoreEol,
                      bool fIgnoreLeadingWhite, bool fIgnoreTrailingWhite, bool fSpecialChars,
                      size_t cchTab, PRTSTREAM pDiff)
{
#ifdef RT_STRICT
    ScmStreamCheckItegrity(pLeft);
    ScmStreamCheckItegrity(pRight);
#endif

    /*
     * Set up the diff state.
     */
    SCMDIFFSTATE State;
    State.cDiffs                = 0;
    State.pszFilename           = pszFilename;
    State.pLeft                 = pLeft;
    State.pRight                = pRight;
    State.fIgnoreEol            = fIgnoreEol;
    State.fIgnoreLeadingWhite   = fIgnoreLeadingWhite;
    State.fIgnoreTrailingWhite  = fIgnoreTrailingWhite;
    State.fSpecialChars         = fSpecialChars;
    State.cchTab                = cchTab;
    State.pDiff                 = pDiff;

    /*
     * Compare them line by line.
     */
    ScmStreamRewindForReading(pLeft);
    ScmStreamRewindForReading(pRight);
    const char *pchLeft;
    const char *pchRight;

    for (;;)
    {
        SCMEOL  enmEolLeft;
        size_t  cchLeft;
        pchLeft  = ScmStreamGetLine(pLeft,  &cchLeft,  &enmEolLeft);

        SCMEOL  enmEolRight;
        size_t  cchRight;
        pchRight = ScmStreamGetLine(pRight, &cchRight, &enmEolRight);
        if (!pchLeft || !pchRight)
            break;

        if (!scmDiffCompare(&State, pchLeft, cchLeft, enmEolLeft, pchRight, cchRight, enmEolRight))
            scmDiffSynchronize(&State, 3);
    }

    /*
     * Deal with any remaining differences.
     */
    if (pchLeft)
        scmDiffReport(&State, 0, ScmStreamTellLine(pLeft) - 1, ~(size_t)0, ScmStreamTellLine(pRight), 0);
    else if (pchRight)
        scmDiffReport(&State, 0, ScmStreamTellLine(pLeft), 0, ScmStreamTellLine(pRight) - 1, ~(size_t)0);

    /*
     * Report any errors.
     */
    if (RT_FAILURE(ScmStreamGetStatus(pLeft)))
        RTMsgError("Left diff stream error: %Rrc\n", ScmStreamGetStatus(pLeft));
    if (RT_FAILURE(ScmStreamGetStatus(pRight)))
        RTMsgError("Right diff stream error: %Rrc\n", ScmStreamGetStatus(pRight));

    return State.cDiffs;
}

/**
 * Recursively delete a directory.
 *
 * @returns IPRT status code, errors go via rtPathRmError.
 * @param   pOpts               The RM options.
 * @param   pszPath             Pointer to a writable buffer holding the path to
 *                              the directory.
 * @param   cchPath             The length of the path (avoid strlen).
 * @param   pDirEntry           Pointer to a directory entry buffer that is
 *                              RTPATHRM_DIR_MAX_ENTRY_SIZE bytes big.
 */
static int rtPathRmRecursive(PRTPATHRMCMDOPTS pOpts, char *pszPath, size_t cchPath, PRTDIRENTRYEX pDirEntry)
{
    /*
     * Make sure the path ends with a slash.
     */
    if (!cchPath || !RTPATH_IS_SLASH(pszPath[cchPath - 1]))
    {
        if (cchPath + 1 >= RTPATH_MAX)
            return rtPathRmError(pOpts, pszPath, VERR_BUFFER_OVERFLOW, "Buffer overflow fixing up '%s'.\n", pszPath);
        pszPath[cchPath++] = RTPATH_SLASH;
        pszPath[cchPath]   = '\0';
    }

    /*
     * Traverse the directory.
     */
    PRTDIR hDir;
    int rc = RTDirOpen(&hDir, pszPath);
    if (RT_FAILURE(rc))
        return rtPathRmError(pOpts, pszPath, rc, "Error opening directory '%s': %Rrc", pszPath, rc);
    int rcRet = VINF_SUCCESS;
    for (;;)
    {
        /*
         * Read the next entry, constructing an full path for it.
         */
        size_t cbEntry = RTPATHRM_DIR_MAX_ENTRY_SIZE;
        rc = RTDirReadEx(hDir, pDirEntry, &cbEntry, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK);
        if (rc == VERR_NO_MORE_FILES)
        {
            /*
             * Reached the end of the directory.
             */
            pszPath[cchPath] = '\0';
            rc = RTDirClose(hDir);
            if (RT_FAILURE(rc))
                return rtPathRmError(pOpts, pszPath, rc, "Error closing directory '%s': %Rrc", pszPath, rc);

            /* Delete the directory. */
            int rc2 = rtPathRmOneDir(pOpts, pszPath);
            if (RT_FAILURE(rc2) && RT_SUCCESS(rcRet))
                return rc2;
            return rcRet;
        }

        if (RT_FAILURE(rc))
        {
            rc = rtPathRmError(pOpts, pszPath, rc, "Error reading directory '%s': %Rrc", pszPath, rc);
            break;
        }

        /* Skip '.' and '..'. */
        if (   pDirEntry->szName[0] == '.'
            && (   pDirEntry->cbName == 1
                || (   pDirEntry->cbName == 2
                    && pDirEntry->szName[1] == '.')))
            continue;

        /* Construct full path. */
        if (cchPath + pDirEntry->cbName >= RTPATH_MAX)
        {
            pszPath[cchPath] = '\0';
            rc = rtPathRmError(pOpts, pszPath, VERR_BUFFER_OVERFLOW, "Path buffer overflow in directory '%s'.", pszPath);
            break;
        }
        memcpy(pszPath + cchPath, pDirEntry->szName, pDirEntry->cbName + 1);

        /*
         * Take action according to the type.
         */
        switch (pDirEntry->Info.Attr.fMode & RTFS_TYPE_MASK)
        {
            case RTFS_TYPE_FILE:
                rc = rtPathRmOneFile(pOpts, pszPath, &pDirEntry->Info);
                break;

            case RTFS_TYPE_DIRECTORY:
                rc = rtPathRmRecursive(pOpts, pszPath, cchPath + pDirEntry->cbName, pDirEntry);
                break;

            case RTFS_TYPE_SYMLINK:
                rc = rtPathRmOneSymlink(pOpts, pszPath);
                break;

            case RTFS_TYPE_FIFO:
            case RTFS_TYPE_DEV_CHAR:
            case RTFS_TYPE_DEV_BLOCK:
            case RTFS_TYPE_SOCKET:
                rc = rtPathRmOneFile(pOpts, pszPath, &pDirEntry->Info);
//.........这里部分代码省略.........

/**
 * Remove one user specified file or directory.
 *
 * @returns IPRT status code, errors go via rtPathRmError.
 * @param   pOpts               The RM options.
 * @param   pszPath             The path to the file, directory, whatever.
 */
static int rtPathRmOne(PRTPATHRMCMDOPTS pOpts, const char *pszPath)
{
    /*
     * RM refuses to delete some directories.
     */
    int rc = rtPathRmOneValidate(pOpts, pszPath);
    if (RT_FAILURE(rc))
        return rc;

    /*
     * Query file system object info.
     */
    RTFSOBJINFO ObjInfo;
    rc = RTPathQueryInfoEx(pszPath, &ObjInfo, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK);
    if (RT_FAILURE(rc))
    {
        if (pOpts->fForce && (rc == VERR_FILE_NOT_FOUND || rc == VERR_PATH_NOT_FOUND))
            return VINF_SUCCESS;
        return rtPathRmError(pOpts, pszPath, rc, "Error deleting '%s': %Rrc", pszPath, rc);
    }

    /*
     * Take type specific action.
     */
    switch (ObjInfo.Attr.fMode & RTFS_TYPE_MASK)
    {
        case RTFS_TYPE_FILE:
            return rtPathRmOneFile(pOpts, pszPath, &ObjInfo);

        case RTFS_TYPE_DIRECTORY:
            if (pOpts->fRecursive)
            {
                char szPath[RTPATH_MAX];
                rc = RTPathAbs(pszPath, szPath, sizeof(szPath));
                if (RT_FAILURE(rc))
                    return rtPathRmError(pOpts, pszPath, rc, "RTPathAbs failed on '%s': %Rrc\n", pszPath, rc);

                union
                {
                    RTDIRENTRYEX    Core;
                    uint8_t         abPadding[RTPATHRM_DIR_MAX_ENTRY_SIZE];
                } DirEntry;

                return rtPathRmRecursive(pOpts, szPath, strlen(szPath), &DirEntry.Core);
            }
            if (pOpts->fDirsAndOther)
                return rtPathRmOneDir(pOpts, pszPath);
            return rtPathRmError(pOpts, pszPath, VERR_IS_A_DIRECTORY, "Cannot remove '%s': %Rrc\n", pszPath, VERR_IS_A_DIRECTORY);

        case RTFS_TYPE_SYMLINK:
            return rtPathRmOneSymlink(pOpts, pszPath);

        case RTFS_TYPE_FIFO:
        case RTFS_TYPE_DEV_CHAR:
        case RTFS_TYPE_DEV_BLOCK:
        case RTFS_TYPE_SOCKET:
            return rtPathRmOneFile(pOpts, pszPath, &ObjInfo);

        case RTFS_TYPE_WHITEOUT:
        default:
            return rtPathRmError(pOpts, pszPath, VERR_UNEXPECTED_FS_OBJ_TYPE,
                                 "Object '%s' has an unknown file type: %o\n", pszPath, ObjInfo.Attr.fMode & RTFS_TYPE_MASK);

    }
}

/**
 * Device I/O Control entry point.
 *
 * @param   pFilp       Associated file pointer.
 * @param   uCmd        The function specified to ioctl().
 * @param   ulArg       The argument specified to ioctl().
 */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
static int VBoxNetAdpLinuxIOCtl(struct inode *pInode, struct file *pFilp,
                                unsigned int uCmd, unsigned long ulArg)
#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) */
static long VBoxNetAdpLinuxIOCtlUnlocked(struct file *pFilp,
                                         unsigned int uCmd, unsigned long ulArg)
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) */
{
    VBOXNETADPREQ Req;
    PVBOXNETADP pAdp;
    int rc;
    char *pszName = NULL;

    Log(("VBoxNetAdpLinuxIOCtl: param len %#x; uCmd=%#x; add=%#x\n", _IOC_SIZE(uCmd), uCmd, VBOXNETADP_CTL_ADD));
    if (RT_UNLIKELY(_IOC_SIZE(uCmd) != sizeof(Req))) /* paranoia */
    {
        Log(("VBoxNetAdpLinuxIOCtl: bad ioctl sizeof(Req)=%#x _IOC_SIZE=%#x; uCmd=%#x.\n", sizeof(Req), _IOC_SIZE(uCmd), uCmd));
        return -EINVAL;
    }

    switch (uCmd)
    {
        case VBOXNETADP_CTL_ADD:
            Log(("VBoxNetAdpLinuxIOCtl: _IOC_DIR(uCmd)=%#x; IOC_OUT=%#x\n", _IOC_DIR(uCmd), IOC_OUT));
            if (RT_UNLIKELY(copy_from_user(&Req, (void *)ulArg, sizeof(Req))))
            {
                Log(("VBoxNetAdpLinuxIOCtl: copy_from_user(,%#lx,) failed; uCmd=%#x.\n", ulArg, uCmd));
                return -EFAULT;
            }
            Log(("VBoxNetAdpLinuxIOCtl: Add %s\n", Req.szName));

            if (Req.szName[0])
            {
                pAdp = vboxNetAdpFindByName(Req.szName);
                if (pAdp)
                {
                    Log(("VBoxNetAdpLinuxIOCtl: '%s' already exists\n", Req.szName));
                    return -EINVAL;
                }
                pszName = Req.szName;
            }
            rc = vboxNetAdpCreate(&pAdp, pszName);
            if (RT_FAILURE(rc))
            {
                Log(("VBoxNetAdpLinuxIOCtl: vboxNetAdpCreate -> %Rrc\n", rc));
                return -(rc == VERR_OUT_OF_RESOURCES ? ENOMEM : EINVAL);
            }

            Assert(strlen(pAdp->szName) < sizeof(Req.szName));
            strncpy(Req.szName, pAdp->szName, sizeof(Req.szName) - 1);
            Req.szName[sizeof(Req.szName) - 1] = '\0';

            if (RT_UNLIKELY(copy_to_user((void *)ulArg, &Req, sizeof(Req))))
            {
                /* this is really bad! */
                /** @todo remove the adapter again? */
                printk(KERN_ERR "VBoxNetAdpLinuxIOCtl: copy_to_user(%#lx,,%#zx); uCmd=%#x!\n", ulArg, sizeof(Req), uCmd);
                return -EFAULT;
            }
            Log(("VBoxNetAdpLinuxIOCtl: Successfully added '%s'\n", Req.szName));
            break;

        case VBOXNETADP_CTL_REMOVE:
            if (RT_UNLIKELY(copy_from_user(&Req, (void *)ulArg, sizeof(Req))))
            {
                Log(("VBoxNetAdpLinuxIOCtl: copy_from_user(,%#lx,) failed; uCmd=%#x.\n", ulArg, uCmd));
                return -EFAULT;
            }
            Log(("VBoxNetAdpLinuxIOCtl: Remove %s\n", Req.szName));

            pAdp = vboxNetAdpFindByName(Req.szName);
            if (!pAdp)
            {
                Log(("VBoxNetAdpLinuxIOCtl: '%s' not found\n", Req.szName));
                return -EINVAL;
            }

            rc = vboxNetAdpDestroy(pAdp);
            if (RT_FAILURE(rc))
            {
                Log(("VBoxNetAdpLinuxIOCtl: vboxNetAdpDestroy('%s') -> %Rrc\n", Req.szName, rc));
                return -EINVAL;
            }
            Log(("VBoxNetAdpLinuxIOCtl: Successfully removed '%s'\n", Req.szName));
            break;

        default:
            printk(KERN_ERR "VBoxNetAdpLinuxIOCtl: unknown command %x.\n", uCmd);
            return -EINVAL;
    }

    return 0;
}

/**
 * Worker that removes a file.
 *
 * Currently used to delete both regular and special files.
 *
 * @returns IPRT status code, errors go via rtPathRmError.
 * @param   pOpts               The RM options.
 * @param   pszPath             The path to the file.
 * @param   pObjInfo            The FS object info for the file.
 */
static int rtPathRmOneFile(PRTPATHRMCMDOPTS pOpts, const char *pszPath, PRTFSOBJINFO pObjInfo)
{
    int rc;
    if (pOpts->fVerbose)
        rtPathRmVerbose(pOpts, pszPath);

    /*
     * Wipe the file if requested and possible.
     */
    if (pOpts->fSafeDelete && RTFS_IS_FILE(pObjInfo->Attr.fMode))
    {
        /* Lazy init of the 0xff buffer. */
        if (g_ab0xFF[0] != 0xff || g_ab0xFF[sizeof(g_ab0xFF) - 1] != 0xff)
            memset(g_ab0xFF, 0xff, sizeof(g_ab0xFF));

        RTFILE hFile;
        rc = RTFileOpen(&hFile, pszPath, RTFILE_O_WRITE);
        if (RT_FAILURE(rc))
            return rtPathRmError(pOpts, pszPath, rc, "Opening '%s' for overwriting: %Rrc\n", pszPath, rc);

        for (unsigned iPass = 0; iPass < 3; iPass++)
        {
            uint8_t const *pabFiller = iPass == 1 ? g_abZeros         : g_ab0xFF;
            size_t const   cbFiller  = iPass == 1 ? sizeof(g_abZeros) : sizeof(g_ab0xFF);

            rc = RTFileSeek(hFile, 0, RTFILE_SEEK_BEGIN, NULL);
            if (RT_FAILURE(rc))
            {
                rc = rtPathRmError(pOpts, pszPath, rc, "Error seeking to start of '%s': %Rrc\n", pszPath, rc);
                break;
            }
            for (RTFOFF cbLeft = pObjInfo->cbObject; cbLeft > 0; cbLeft -= cbFiller)
            {
                size_t cbToWrite = cbFiller;
                if (cbLeft < (RTFOFF)cbToWrite)
                    cbToWrite = (size_t)cbLeft;
                rc = RTFileWrite(hFile, pabFiller, cbToWrite, NULL);
                if (RT_FAILURE(rc))
                {
                    rc = rtPathRmError(pOpts, pszPath, rc, "Error writing to '%s': %Rrc\n", pszPath, rc);
                    break;
                }
            }
        }

        int rc2 = RTFileClose(hFile);
        if (RT_FAILURE(rc2) && RT_SUCCESS(rc))
            return rtPathRmError(pOpts, pszPath, rc2, "Closing '%s' failed: %Rrc\n", pszPath, rc);
        if (RT_FAILURE(rc))
            return rc;
    }

    /*
     * Remove the file.
     */
    rc = RTFileDelete(pszPath);
    if (RT_FAILURE(rc))
        return rtPathRmError(pOpts, pszPath, rc,
                             RTFS_IS_FILE(pObjInfo->Attr.fMode)
                             ? "Error removing regular file '%s': %Rrc\n"
                             : "Error removing special file '%s': %Rrc\n",
                             pszPath, rc);
    return rc;
}

static int vboxvfs_mount(struct mount *mp, struct thread *td)
{
    int rc;
    char *pszShare;
    int  cbShare, cbOption;
    int uid = 0, gid = 0;
    struct sf_glob_info *pShFlGlobalInfo;
    SHFLSTRING *pShFlShareName = NULL;
    int cbShFlShareName;

    printf("%s: Enter\n", __FUNCTION__);

    if (mp->mnt_flag & (MNT_UPDATE | MNT_ROOTFS))
        return EOPNOTSUPP;

    if (vfs_filteropt(mp->mnt_optnew, vboxvfs_opts))
    {
        vfs_mount_error(mp, "%s", "Invalid option");
        return EINVAL;
    }

    rc = vfs_getopt(mp->mnt_optnew, "from", (void **)&pszShare, &cbShare);
    if (rc || pszShare[cbShare-1] != '\0' || cbShare > 0xfffe)
        return EINVAL;

    rc = vfs_getopt(mp->mnt_optnew, "gid", (void **)&gid, &cbOption);
    if ((rc != ENOENT) && (rc || cbOption != sizeof(gid)))
        return EINVAL;

    rc = vfs_getopt(mp->mnt_optnew, "uid", (void **)&uid, &cbOption);
    if ((rc != ENOENT) && (rc || cbOption != sizeof(uid)))
        return EINVAL;

    pShFlGlobalInfo = RTMemAllocZ(sizeof(struct sf_glob_info));
    if (!pShFlGlobalInfo)
        return ENOMEM;

    cbShFlShareName = offsetof (SHFLSTRING, String.utf8) + cbShare + 1;
    pShFlShareName  = RTMemAllocZ(cbShFlShareName);
    if (!pShFlShareName)
        return VERR_NO_MEMORY;

    pShFlShareName->u16Length = cbShare;
    pShFlShareName->u16Size   = cbShare + 1;
    memcpy (pShFlShareName->String.utf8, pszShare, cbShare + 1);

    rc = VbglR0SfMapFolder (&g_vboxSFClient, pShFlShareName, &pShFlGlobalInfo->map);
    RTMemFree(pShFlShareName);

    if (RT_FAILURE (rc))
    {
        RTMemFree(pShFlGlobalInfo);
        printf("VbglR0SfMapFolder failed rc=%d\n", rc);
        return EPROTO;
    }

    pShFlGlobalInfo->uid = uid;
    pShFlGlobalInfo->gid = gid;

    mp->mnt_data = pShFlGlobalInfo;

    /** @todo root vnode. */

    vfs_getnewfsid(mp);
    vfs_mountedfrom(mp, pszShare);

    printf("%s: Leave rc=0\n", __FUNCTION__);

    return 0;
}

//.........这里部分代码省略.........
    pbData = pUrb->abData;

    switch (pUrb->enmType)
    {
        case VUSBXFERTYPE_MSG:
        {
            pEndpointFBSD->apvData[0] = pbData;
            pEndpointFBSD->acbData[0] = 8;

            /* check wLength */
            if (pbData[6] || pbData[7])
            {
                pEndpointFBSD->apvData[1] = pbData + 8;
                pEndpointFBSD->acbData[1] = pbData[6] | (pbData[7] << 8);
                cFrames = 2;
            }
            else
            {
                pEndpointFBSD->apvData[1] = NULL;
                pEndpointFBSD->acbData[1] = 0;
                cFrames = 1;
            }

            LogFlow(("usbProxyFreeBSDUrbQueue: pUrb->cbData=%u, 0x%02x, "
                     "0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
                     pUrb->cbData, pbData[0], pbData[1], pbData[2], pbData[3],
                     pbData[4], pbData[5], pbData[6], pbData[7]));

            pXferEndpoint->timeout = USB_FS_TIMEOUT_NONE;
            pXferEndpoint->flags = USB_FS_FLAG_MULTI_SHORT_OK;
            break;
        }
        case VUSBXFERTYPE_ISOC:
        {
            unsigned i;

            for (i = 0; i < pUrb->cIsocPkts; i++)
            {
                if (i >= pEndpointFBSD->cMaxFrames)
                    break;
                pEndpointFBSD->apvData[i] = pbData + pUrb->aIsocPkts[i].off;
                pEndpointFBSD->acbData[i] = pUrb->aIsocPkts[i].cb;
            }
            /* Timeout handling will be done during reap. */
            pXferEndpoint->timeout = USB_FS_TIMEOUT_NONE;
            pXferEndpoint->flags = USB_FS_FLAG_MULTI_SHORT_OK;
            cFrames = i;
            break;
        }
        default:
        {
            pEndpointFBSD->apvData[0] = pbData;
            pEndpointFBSD->cbData0 = pUrb->cbData;

            /* XXX maybe we have to loop */
            if (pUrb->cbData > pEndpointFBSD->cMaxIo)
                pEndpointFBSD->acbData[0] = pEndpointFBSD->cMaxIo;
            else
                pEndpointFBSD->acbData[0] = pUrb->cbData;

            /* Timeout handling will be done during reap. */
            pXferEndpoint->timeout = USB_FS_TIMEOUT_NONE;
            pXferEndpoint->flags = pUrb->fShortNotOk ? 0 : USB_FS_FLAG_MULTI_SHORT_OK;
            cFrames = 1;
            break;
        }
    }

    /* store number of frames */
    pXferEndpoint->nFrames = cFrames;

    /* zero-default */
    memset(&UsbFsStart, 0, sizeof(UsbFsStart));

    /* Start the transfer */
    UsbFsStart.ep_index = index;

    rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_FS_START, &UsbFsStart, true);

    LogFlow(("usbProxyFreeBSDUrbQueue: USB_FS_START returned rc=%d "
             "len[0]=%u len[1]=%u cbData=%u index=%u ep_num=%u\n", rc,
             (unsigned)pEndpointFBSD->acbData[0],
             (unsigned)pEndpointFBSD->acbData[1],
             (unsigned)pUrb->cbData,
             (unsigned)index, (unsigned)ep_num));

    if (RT_FAILURE(rc))
    {
        if (rc == VERR_RESOURCE_BUSY)
        {
            index++;
            goto retry;
        }
        return rc;
    }
    pUrb->Dev.pvPrivate = (void *)(long)(index + 1);
    pEndpointFBSD->pUrb = pUrb;

    return rc;
}

static int usbProxyFreeBSDEndpointOpen(PUSBPROXYDEV pProxyDev, int Endpoint, bool fIsoc, int index)
{
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);
    PUSBENDPOINTFBSD pEndpointFBSD = NULL; /* shut up gcc */
    struct usb_fs_endpoint *pXferEndpoint;
    struct usb_fs_open UsbFsOpen;
    int rc;

    LogFlow(("usbProxyFreeBSDEndpointOpen: pProxyDev=%p Endpoint=%d\n",
             (void *)pProxyDev, Endpoint));

    for (; index < USBFBSD_MAXENDPOINTS; index++)
    {
        pEndpointFBSD = &pDevFBSD->aSwEndpoint[index];
        if (pEndpointFBSD->fCancelling)
            continue;
        if (   pEndpointFBSD->fOpen
            && !pEndpointFBSD->pUrb
            && (int)pEndpointFBSD->iEpNum == Endpoint)
            return index;
    }

    if (index == USBFBSD_MAXENDPOINTS)
    {
        for (index = 0; index != USBFBSD_MAXENDPOINTS; index++)
        {
            pEndpointFBSD = &pDevFBSD->aSwEndpoint[index];
            if (pEndpointFBSD->fCancelling)
                continue;
            if (!pEndpointFBSD->fOpen)
                break;
        }
        if (index == USBFBSD_MAXENDPOINTS)
            return -1;
    }
    /* set ppBuffer and pLength */

    pXferEndpoint = &pDevFBSD->aHwEndpoint[index];
    pXferEndpoint->ppBuffer = &pEndpointFBSD->apvData[0];
    pXferEndpoint->pLength = &pEndpointFBSD->acbData[0];

    LogFlow(("usbProxyFreeBSDEndpointOpen: ep_index=%d ep_num=%d\n",
             index, Endpoint));

    memset(&UsbFsOpen, 0, sizeof(UsbFsOpen));

    UsbFsOpen.ep_index = index;
    UsbFsOpen.ep_no = Endpoint;
    UsbFsOpen.max_bufsize = 256 * 1024;
    /* Hardcoded assumption about the URBs we get. */

    UsbFsOpen.max_frames = fIsoc ? USBFBSD_MAXFRAMES : 2;

    rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_FS_OPEN, &UsbFsOpen, true);
    if (RT_FAILURE(rc))
    {
        if (rc == VERR_RESOURCE_BUSY)
            LogFlow(("usbProxyFreeBSDEndpointOpen: EBUSY\n"));

        return -1;
    }
    pEndpointFBSD->fOpen = true;
    pEndpointFBSD->pUrb = NULL;
    pEndpointFBSD->iEpNum = Endpoint;
    pEndpointFBSD->cMaxIo = UsbFsOpen.max_bufsize;
    pEndpointFBSD->cMaxFrames = UsbFsOpen.max_frames;

    return index;
}

/**
 *  Entry point.
 */
extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp)
{
    RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_SUPLIB);
    RTPrintf(TESTCASE ": TESTING...\n");
    RTStrmFlush(g_pStdOut);

    /*
     * Create empty VM.
     */
    PUVM pUVM;
    int rc = VMR3Create(1, NULL, NULL, NULL, tstVMREQConfigConstructor, NULL, NULL, &pUVM);
    if (RT_SUCCESS(rc))
    {
        /*
         * Do testing.
         */
        uint64_t u64StartTS = RTTimeNanoTS();
        RTTHREAD Thread0;
        rc = RTThreadCreate(&Thread0, Thread, pUVM, 0, RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "REQ1");
        if (RT_SUCCESS(rc))
        {
            RTTHREAD Thread1;
            rc = RTThreadCreate(&Thread1, Thread, pUVM, 0, RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "REQ1");
            if (RT_SUCCESS(rc))
            {
                int rcThread1;
                rc = RTThreadWait(Thread1, RT_INDEFINITE_WAIT, &rcThread1);
                if (RT_FAILURE(rc))
                {
                    RTPrintf(TESTCASE ": RTThreadWait(Thread1,,) failed, rc=%Rrc\n", rc);
                    g_cErrors++;
                }
                if (RT_FAILURE(rcThread1))
                    g_cErrors++;
            }
            else
            {
                RTPrintf(TESTCASE ": RTThreadCreate(&Thread1,,,,) failed, rc=%Rrc\n", rc);
                g_cErrors++;
            }

            int rcThread0;
            rc = RTThreadWait(Thread0, RT_INDEFINITE_WAIT, &rcThread0);
            if (RT_FAILURE(rc))
            {
                RTPrintf(TESTCASE ": RTThreadWait(Thread1,,) failed, rc=%Rrc\n", rc);
                g_cErrors++;
            }
            if (RT_FAILURE(rcThread0))
                g_cErrors++;
        }
        else
        {
            RTPrintf(TESTCASE ": RTThreadCreate(&Thread0,,,,) failed, rc=%Rrc\n", rc);
            g_cErrors++;
        }
        uint64_t u64ElapsedTS = RTTimeNanoTS() - u64StartTS;
        RTPrintf(TESTCASE  ": %llu ns elapsed\n", u64ElapsedTS);
        RTStrmFlush(g_pStdOut);

        /*
         * Print stats.
         */
        STAMR3Print(pUVM, "/VM/Req/*");

        /*
         * Testing va_list fun.
         */
        RTPrintf(TESTCASE ": va_list argument test...\n"); RTStrmFlush(g_pStdOut);
        PassVA(pUVM, "hello %s", "world");
        VMR3AtRuntimeErrorRegister(pUVM, MyAtRuntimeError, (void *)"user argument");
        VMSetRuntimeError(VMR3GetVM(pUVM), 0 /*fFlags*/, "enum", "some %s string", "error");

        /*
         * Cleanup.
         */
        rc = VMR3PowerOff(pUVM);
        if (!RT_SUCCESS(rc))
        {
            RTPrintf(TESTCASE ": error: failed to power off vm! rc=%Rrc\n", rc);
            g_cErrors++;
        }
        rc = VMR3Destroy(pUVM);
        if (!RT_SUCCESS(rc))
        {
            RTPrintf(TESTCASE ": error: failed to destroy vm! rc=%Rrc\n", rc);
            g_cErrors++;
        }
        VMR3ReleaseUVM(pUVM);
    }
    else
    {
        RTPrintf(TESTCASE ": fatal error: failed to create vm! rc=%Rrc\n", rc);
        g_cErrors++;
    }

    /*
//.........这里部分代码省略.........