mirror of https://gitee.com/openkylin/linux.git
71 lines
1.6 KiB
XML
71 lines
1.6 KiB
XML
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<refentry id="func-close">
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<refmeta>
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<refentrytitle>V4L2 close()</refentrytitle>
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&manvol;
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</refmeta>
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<refnamediv>
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<refname>v4l2-close</refname>
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<refpurpose>Close a V4L2 device</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <unistd.h></funcsynopsisinfo>
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<funcprototype>
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<funcdef>int <function>close</function></funcdef>
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<paramdef>int <parameter>fd</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Arguments</title>
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<variablelist>
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<varlistentry>
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<term><parameter>fd</parameter></term>
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<listitem>
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<para>&fd;</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Description</title>
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<para>Closes the device. Any I/O in progress is terminated and
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resources associated with the file descriptor are freed. However data
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format parameters, current input or output, control values or other
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properties remain unchanged.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para>The function returns <returnvalue>0</returnvalue> on
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success, <returnvalue>-1</returnvalue> on failure and the
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<varname>errno</varname> is set appropriately. Possible error
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codes:</para>
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<variablelist>
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<varlistentry>
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<term><errorcode>EBADF</errorcode></term>
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<listitem>
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<para><parameter>fd</parameter> is not a valid open file
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descriptor.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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</refentry>
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<!--
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Local Variables:
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mode: sgml
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sgml-parent-document: "v4l2.sgml"
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indent-tabs-mode: nil
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End:
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-->
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