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.. -*- coding: utf-8; mode: rst -*-
.. _FE_GET_EVENT:
************
FE_GET_EVENT
************
Name
====
FE_GET_EVENT
Synopsis
========
.. cpp:function:: int ioctl(int fd, int request = QPSK_GET_EVENT, struct dvb_frontend_event *ev)
Arguments
=========
.. flat-table::
:header-rows: 0
:stub-columns: 0
- .. row 1
- int fd
- File descriptor returned by a previous call to open().
- .. row 2
- int request
- Equals :ref:`FE_GET_EVENT` for this command.
- .. row 3
- struct dvb_frontend_event \*ev
- Points to the location where the event,
- .. row 4
-
- 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 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
.. 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.
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