Documentation/userspace-api/media/v4l/func-close.rst

.. Permission is granted to copy, distribute and/or modify this
.. document under the terms of the GNU Free Documentation License,
.. Version 1.1 or any later version published by the Free Software
.. Foundation, with no Invariant Sections, no Front-Cover Texts
.. and no Back-Cover Texts. A copy of the license is included at
.. Documentation/userspace-api/media/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections

.. _func-close:

************
V4L2 close()
************

Name
====

v4l2-close - Close a V4L2 device


Synopsis
========

.. code-block:: c

    #include <unistd.h>


.. c:function:: int close( int fd )
    :name: v4l2-close

Arguments
=========

``fd``
    File descriptor returned by :ref:`open() <func-open>`.


Description
===========

Closes the device. Any I/O in progress is terminated and resources
associated with the file descriptor are freed. However data format
parameters, current input or output, control values or other properties
remain unchanged.


Return Value
============

The function returns 0 on success, -1 on failure and the ``errno`` is
set appropriately. Possible error codes:

EBADF
    ``fd`` is not a valid open file descriptor.