C++ USBPROXYDEV_2_DATA函数代码示例

/**
 * Close an endpoint.
 *
 * @returns VBox status code.
 */
static int usbProxyFreeBSDEndpointClose(PUSBPROXYDEV pProxyDev, int Endpoint)
{
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);
    PUSBENDPOINTFBSD pEndpointFBSD = &pDevFBSD->aSwEndpoint[Endpoint];
    struct usb_fs_close UsbFsClose;
    int rc = VINF_SUCCESS;

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

    /* check for cancelling */
    if (pEndpointFBSD->pUrb != NULL)
    {
        pEndpointFBSD->fCancelling = true;
        pDevFBSD->fCancelling = true;
    }

    /* check for opened */
    if (pEndpointFBSD->fOpen)
    {
        pEndpointFBSD->fOpen = false;

        /* Zero default */
        memset(&UsbFsClose, 0, sizeof(UsbFsClose));

        /* Set endpoint index */
        UsbFsClose.ep_index = Endpoint;

        /* Close endpoint */
        rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_FS_CLOSE, &UsbFsClose, true);
    }
    return rc;
}

/**
 * Uninit USB subsystem.
 */
static int usbProxyFreeBSDFsUnInit(PUSBPROXYDEV pProxyDev)
{
    struct usb_fs_uninit UsbFsUninit;
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);
    int rc;

    LogFlow(("usbProxyFreeBSDFsUnInit: ProxyDev=%p\n", (void *)pProxyDev));

    /* Sanity check */
    AssertPtrReturn(pDevFBSD, VERR_INVALID_PARAMETER);

    if (pDevFBSD->fInit != true)
        return VINF_SUCCESS;

    /* Close any open endpoints. */
    for (unsigned n = 0; n != USBFBSD_MAXENDPOINTS; n++)
        usbProxyFreeBSDEndpointClose(pProxyDev, n);

    /* Zero default */
    memset(&UsbFsUninit, 0, sizeof(UsbFsUninit));

    /* Uninit USB subsystem */
    rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_FS_UNINIT, &UsbFsUninit, false);
    if (RT_SUCCESS(rc))
        pDevFBSD->fInit = false;

    return rc;
}

/**
 * Claims all the interfaces and figures out the
 * current configuration.
 *
 * @returns VINF_SUCCESS.
 * @param   pProxyDev       The proxy device.
 */
static DECLCALLBACK(int) usbProxyFreeBSDInit(PUSBPROXYDEV pProxyDev)
{
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);
    int rc;

    LogFlow(("usbProxyFreeBSDInit: pProxyDev=%s\n",
             pProxyDev->pUsbIns->pszName));

    /* Retrieve current active configuration. */
    rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_GET_CONFIG,
                                &pProxyDev->iActiveCfg, true);
    if (RT_FAILURE(rc) || pProxyDev->iActiveCfg == 255)
    {
        pProxyDev->cIgnoreSetConfigs = 0;
        pProxyDev->iActiveCfg = -1;
    }
    else
    {
        pProxyDev->cIgnoreSetConfigs = 1;
        pProxyDev->iActiveCfg++;
    }

    Log(("usbProxyFreeBSDInit: iActiveCfg=%d\n", pProxyDev->iActiveCfg));

    return rc;
}

/**
 * Copy the device and free resources associated with the backend.
 */
static DECLCALLBACK(void) usbProxyWinClose(PUSBPROXYDEV pProxyDev)
{
    /* Here we just close the device and free up p->priv
     * there is no need to do anything like cancel outstanding requests
     * that will have been done already
     */
    PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);
    Assert(pPriv);
    if (!pPriv)
        return;
    Log(("usbProxyWinClose: %p\n", pPriv->hDev));

    if (pPriv->hDev != INVALID_HANDLE_VALUE)
    {
        Assert(pPriv->fClaimed);

        USBSUP_RELEASEDEV in;
        DWORD cbReturned = 0;
        in.bInterfaceNumber = pPriv->bInterfaceNumber;
        if (!DeviceIoControl(pPriv->hDev, SUPUSB_IOCTL_USB_RELEASE_DEVICE, &in, sizeof(in), NULL, 0, &cbReturned, NULL))
        {
            Log(("usbproxy: usbProxyWinClose: DeviceIoControl %#x failed with %#x!!\n", pPriv->hDev, GetLastError()));
        }
        if (!CloseHandle(pPriv->hDev))
            AssertLogRelMsgFailed(("usbproxy: usbProxyWinClose: CloseHandle %#x failed with %#x!!\n", pPriv->hDev, GetLastError()));
        pPriv->hDev = INVALID_HANDLE_VALUE;
    }

    CloseHandle(pPriv->hEventWakeup);
    RTCritSectDelete(&pPriv->CritSect);

    RTMemFree(pPriv->paQueuedUrbs);
    RTMemFree(pPriv->paHandles);
}

/**
 * Wrapper for the ioctl call.
 *
 * This wrapper will repeat the call if we get an EINTR or EAGAIN. It can also
 * handle ENODEV (detached device) errors.
 *
 * @returns whatever ioctl returns.
 * @param   pProxyDev       The proxy device.
 * @param   iCmd            The ioctl command / function.
 * @param   pvArg           The ioctl argument / data.
 * @param   fHandleNoDev    Whether to handle ENXIO.
 * @internal
 */
static int usbProxyFreeBSDDoIoCtl(PUSBPROXYDEV pProxyDev, unsigned long iCmd,
                                  void *pvArg, bool fHandleNoDev)
{
    int rc = VINF_SUCCESS;
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);

    LogFlow(("usbProxyFreeBSDDoIoCtl: iCmd=%#x\n", iCmd));

    do
    {
        rc = ioctl(RTFileToNative(pDevFBSD->hFile), iCmd, pvArg);
        if (rc >= 0)
            return VINF_SUCCESS;
    } while (errno == EINTR);

    if (errno == ENXIO && fHandleNoDev)
    {
        Log(("usbProxyFreeBSDDoIoCtl: ENXIO -> unplugged. pProxyDev=%s\n",
             pProxyDev->pUsbIns->pszName));
        errno = ENODEV;
    }
    else if (errno != EAGAIN)
    {
        LogFlow(("usbProxyFreeBSDDoIoCtl: Returned %d. pProxyDev=%s\n",
                 errno, pProxyDev->pUsbIns->pszName));
    }
    return RTErrConvertFromErrno(errno);
}

/**
 * Init USB subsystem.
 */
static int usbProxyFreeBSDFsInit(PUSBPROXYDEV pProxyDev)
{
    struct usb_fs_init UsbFsInit;
    PUSBPROXYDEVFBSD pDevFBSD = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVFBSD);
    int rc;

    LogFlow(("usbProxyFreeBSDFsInit: pProxyDev=%p\n", (void *)pProxyDev));

    /* Sanity check */
    AssertPtrReturn(pDevFBSD, VERR_INVALID_PARAMETER);

    if (pDevFBSD->fInit == true)
        return VINF_SUCCESS;

    /* Zero default */
    memset(&UsbFsInit, 0, sizeof(UsbFsInit));

    UsbFsInit.pEndpoints = pDevFBSD->aHwEndpoint;
    UsbFsInit.ep_index_max = USBFBSD_MAXENDPOINTS;

    /* Init USB subsystem */
    rc = usbProxyFreeBSDDoIoCtl(pProxyDev, USB_FS_INIT, &UsbFsInit, false);
    if (RT_SUCCESS(rc))
        pDevFBSD->fInit = true;

    return rc;
}

static DECLCALLBACK(int) usbProxySolarisWakeup(PUSBPROXYDEV pProxyDev)
{
    PUSBPROXYDEVSOL pDevSol = USBPROXYDEV_2_DATA(pProxyDev, PUSBPROXYDEVSOL);
    size_t cbIgnored;

    LogFlowFunc(("pProxyDev=%p\n", pProxyDev));

    return RTPipeWrite(pDevSol->hPipeWakeupW, "", 1, &cbIgnored);
}

/**
 * Converts the given Windows error code to VBox handling unplugged devices.
 *
 * @returns VBox status code.
 * @param   pProxDev    The USB proxy device instance.
 * @param   dwErr       Windows error code.
 */
static int usbProxyWinHandleUnpluggedDevice(PUSBPROXYDEV pProxyDev, DWORD dwErr)
{
    PPRIV_USBW32 pPriv = USBPROXYDEV_2_DATA(pProxyDev, PPRIV_USBW32);

    if (   dwErr == ERROR_INVALID_HANDLE_STATE
        || dwErr == ERROR_BAD_COMMAND)
    {
        Log(("usbproxy: device %x unplugged!!\n", pPriv->hDev));
        pProxyDev->fDetached = true;
    }
    else
        AssertMsgFailed(("lasterr=%d\n", dwErr));
    return RTErrConvertFromWin32(dwErr);
}