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Diffstat (limited to 'Documentation/media/uapi/dvb/fe-get-event.rst')
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diff --git a/Documentation/media/uapi/dvb/fe-get-event.rst b/Documentation/media/uapi/dvb/fe-get-event.rst new file mode 100644 index 000000000..505db94bf --- /dev/null +++ b/Documentation/media/uapi/dvb/fe-get-event.rst @@ -0,0 +1,71 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _FE_GET_EVENT: + +************ +FE_GET_EVENT +************ + +Name +==== + +FE_GET_EVENT + +.. attention:: This ioctl is deprecated. + + +Synopsis +======== + +.. c:function:: int ioctl(int fd, FE_GET_EVENT, struct dvb_frontend_event *ev) + :name: FE_GET_EVENT + + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open() <dvb-fe-open>`. + +``ev`` + Points to the location where the event, if any, is to be stored. + + +Description +=========== + +This ioctl call returns a frontend event if available. If an event is +not available, the behavior depends on whether the device is in blocking +or non-blocking mode. In the latter case, the call fails immediately +with errno set to ``EWOULDBLOCK``. In the former case, the call blocks until +an event becomes available. + + +Return Value +============ + +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + + - .. row 1 + + - ``EWOULDBLOCK`` + + - There is no event pending, and the device is in non-blocking mode. + + - .. row 2 + + - ``EOVERFLOW`` + + - Overflow in event queue - one or more events were lost. + +Generic error codes are described at the +:ref:`Generic Error Codes <gen-errors>` chapter. |