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.. -*- coding: utf-8; mode: rst -*-
.. _FE_GET_FRONTEND:
***************
FE_GET_FRONTEND
***************
Name
====
FE_GET_FRONTEND
Synopsis
========
.. c:function:: int ioctl(int fd, int request = FE_GET_FRONTEND, struct dvb_frontend_parameters *p)
Arguments
=========
.. flat-table::
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:stub-columns: 0
- .. row 1
- int fd
- File descriptor returned by a previous call to open().
- .. row 2
- int request
- Equals :ref:`FE_SET_FRONTEND` for this
command.
- .. row 3
- struct dvb_frontend_parameters \*p
- Points to parameters for tuning operation.
Description
===========
This ioctl call queries the currently effective frontend parameters. For
this command, read-only access to the device is sufficient.
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.
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- .. row 1
- ``EINVAL``
- Maximum supported symbol rate reached.
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