STDMETHODIMP USBController::RemoveDeviceFilter(ULONG aPosition, IUSBDeviceFilter **aFilter) { #ifdef VBOX_WITH_USB CheckComArgOutPointerValid(aFilter); AutoCaller autoCaller(this); if (FAILED(autoCaller.rc())) return autoCaller.rc(); /* the machine needs to be mutable */ AutoMutableStateDependency adep(m->pParent); if (FAILED(adep.rc())) return adep.rc(); AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS); if (!m->llDeviceFilters->size()) return setError(E_INVALIDARG, tr("The USB device filter list is empty")); if (aPosition >= m->llDeviceFilters->size()) return setError(E_INVALIDARG, tr("Invalid position: %lu (must be in range [0, %lu])"), aPosition, m->llDeviceFilters->size() - 1); /* backup the list before modification */ m->llDeviceFilters.backup(); ComObjPtr<USBDeviceFilter> filter; { /* iterate to the position... */ DeviceFilterList::iterator it = m->llDeviceFilters->begin(); std::advance (it, aPosition); /* ...get an element from there... */ filter = *it; /* ...and remove */ filter->mInList = false; m->llDeviceFilters->erase (it); } /* cancel sharing (make an independent copy of data) */ filter->unshare(); filter.queryInterfaceTo(aFilter); /* notify the proxy (only when it makes sense) */ if (filter->getData().mActive && Global::IsOnline(adep.machineState()) && filter->getData().mRemote.isMatch (false)) { USBProxyService *service = m->pHost->usbProxyService(); ComAssertRet(service, E_FAIL); ComAssertRet(filter->getId() != NULL, E_FAIL); service->removeFilter(filter->getId()); filter->getId() = NULL; } alock.release(); AutoWriteLock mlock(m->pParent COMMA_LOCKVAL_SRC_POS); m->pParent->setModified(Machine::IsModified_USB); mlock.release(); return S_OK; #else /* VBOX_WITH_USB */ NOREF(aPosition); NOREF(aFilter); ReturnComNotImplemented(); #endif /* VBOX_WITH_USB */ }