int
main(int argc, const char *argv[])
{
char **ppsz_cd_drives=NULL, **c;
cdio_log_set_handler (log_handler);
/* Print out a list of CD-drives */
printf("All CD-ROM/DVD drives...\n");
ppsz_cd_drives = getDevices();
if (NULL != ppsz_cd_drives)
for( c = ppsz_cd_drives; *c != NULL; c++ ) {
printf("Drive %s\n", *c);
}
freeDeviceList(ppsz_cd_drives);
print_drive_class("All CD-ROM drives (again)", CDIO_FS_MATCH_ALL);
print_drive_class("CD-ROM drives with a CD-DA loaded...", CDIO_FS_AUDIO);
print_drive_class("CD-ROM drives with some sort of ISO 9660 filesystem...",
CDIO_FS_ANAL_ISO9660_ANY, true);
print_drive_class("(S)VCD drives...", CDIO_FS_ANAL_VCD_ANY, true);
return 0;
}
/*
* Return a list of devices found by libftdi together with a number of fields
* describing the corresponding USB device.
* The list is internally cached. To free it, call freeDeviceList().
*
* Returns: a vector pointer containing 0 or more devices, or NULL if an error
* occured while retrieving the list. When NULL is returned, this is guaranteed
* to be an ftdi error.
*/
const FtdiDevice::vec_deviceInfo* FtdiDevice::getDeviceList( ftdi_context* c )
{
ftdi_context* context = c ? c : ftdi_new();
if ( context == 0 ) return 0;
if ( s_deviceList != 0 ) freeDeviceList();
int r = ftdi_usb_find_all( context, &s_ftdiDeviceList, USB_VENDOR_ID, USB_PRODUCT_ID );
s_deviceList = new vec_deviceInfo();
if ( r >= 0 ) {
struct ftdi_device_list* openDev = s_ftdiDeviceList;
while ( openDev ) {
struct deviceInfo info;
info.ftdiDevice = openDev->dev;
info.usbInfo = fetchUsbInformation( context, info.ftdiDevice );
s_deviceList->push_back( info );
openDev = openDev->next;
}
}
//Only free the context if it has been allocated locally.
if ( c == 0 ) ftdi_free( context );
return s_deviceList;
}
/**
* Resets the receive state to the idle state.
*
* @returns nothing.
*/
void USBProxyBackendUsbIp::resetRecvState()
{
freeDeviceList(m->pHead);
m->pHead = NULL;
m->ppNext = &m->pHead;
m->cDevicesCur = 0;
m->enmRecvState = kUsbIpRecvState_None;
m->cbResidualRecv = 0;
m->pbRecvBuf = &m->Scratch.abRecv[0];
m->cDevicesLeft = 0;
}
static void
print_drive_class(const char *psz_msg, cdio_fs_anal_t bitmask,
bool b_any=false) {
char **ppsz_cd_drives=NULL, **c;
printf("%s...\n", psz_msg);
ppsz_cd_drives = getDevices(NULL, bitmask, b_any);
if (NULL != ppsz_cd_drives)
for( c = ppsz_cd_drives; *c != NULL; c++ ) {
printf("Drive %s\n", *c);
}
freeDeviceList(ppsz_cd_drives);
printf("-----\n");
}
int USBProxyBackendUsbIp::wait(RTMSINTERVAL aMillies)
{
int rc = VINF_SUCCESS;
bool fDeviceListChangedOrWokenUp = false;
/* Try to reconnect once when we enter if we lost the connection earlier. */
if (m->hSocket == NIL_RTSOCKET)
rc = reconnect();
/* Query a new device list upon entering. */
if (m->enmRecvState == kUsbIpRecvState_None)
{
rc = startListExportedDevicesReq();
if (RT_FAILURE(rc))
disconnect();
}
/*
* Because the USB/IP protocol doesn't specify a way to get notified about
* new or removed exported devices we have to poll the host periodically for
* a new device list and compare it with the previous one notifying the proxy
* service about changes.
*/
while ( !fDeviceListChangedOrWokenUp
&& (aMillies == RT_INDEFINITE_WAIT || aMillies > 0)
&& RT_SUCCESS(rc))
{
RTMSINTERVAL msWait = aMillies;
uint64_t msPollStart = RTTimeMilliTS();
uint32_t uIdReady = 0;
uint32_t fEventsRecv = 0;
/* Limit the waiting time to 1sec so we can either reconnect or get a new device list. */
if (m->hSocket == NIL_RTSOCKET || m->enmRecvState == kUsbIpRecvState_None)
msWait = RT_MIN(1000, aMillies);
rc = RTPoll(m->hPollSet, msWait, &fEventsRecv, &uIdReady);
if (RT_SUCCESS(rc))
{
if (uIdReady == USBIP_POLL_ID_PIPE)
{
/* Drain the wakeup pipe. */
char bRead = 0;
size_t cbRead = 0;
rc = RTPipeRead(m->hWakeupPipeR, &bRead, 1, &cbRead);
Assert(RT_SUCCESS(rc) && cbRead == 1);
fDeviceListChangedOrWokenUp = true;
}
else if (uIdReady == USBIP_POLL_ID_SOCKET)
{
if (fEventsRecv & RTPOLL_EVT_ERROR)
rc = VERR_NET_SHUTDOWN;
else
rc = receiveData();
if (RT_SUCCESS(rc))
{
/*
* If we are in the none state again we received the previous request
* and have a new device list to compare the old against.
*/
if (m->enmRecvState == kUsbIpRecvState_None)
{
if (hasDevListChanged(m->pHead))
fDeviceListChangedOrWokenUp = true;
/* Update to the new list in any case now that we have it anyway. */
RTSemFastMutexRequest(m->hMtxDevices);
freeDeviceList(m->pUsbDevicesCur);
m->cUsbDevicesCur = m->cDevicesCur;
m->pUsbDevicesCur = m->pHead;
RTSemFastMutexRelease(m->hMtxDevices);
m->pHead = NULL;
resetRecvState();
}
}
else if (rc == VERR_NET_SHUTDOWN || rc == VERR_BROKEN_PIPE)
{
LogRelMax(10, ("USB/IP: Lost connection to host \"%s\", trying to reconnect...\n", m->pszHost));
disconnect();
rc = VINF_SUCCESS;
}
}
else
{
AssertMsgFailed(("Invalid poll ID returned\n"));
rc = VERR_INVALID_STATE;
}
aMillies -= (RTTimeMilliTS() - msPollStart);
}
else if (rc == VERR_TIMEOUT)
{
aMillies -= msWait;
if (aMillies)
{
/* Try to reconnect and start a new request if we lost the connection before. */
if (m->hSocket == NIL_RTSOCKET)
rc = reconnect();
if (RT_SUCCESS(rc))
rc = startListExportedDevicesReq();
}
}
}
return rc;
}
