<?xml version="1.0"?>
<!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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  This file is part of systemd.

  Copyright 2011 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
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-->
<refentry id="binfmt.d" conditional='ENABLE_BINFMT'
          xmlns:xi="http://www.w3.org/2001/XInclude">

        <refentryinfo>
                <title>binfmt.d</title>
                <productname>systemd</productname>

                <authorgroup>
                        <author>
                                <contrib>Developer</contrib>
                                <firstname>Lennart</firstname>
                                <surname>Poettering</surname>
                                <email>lennart@poettering.net</email>
                        </author>
                </authorgroup>
        </refentryinfo>

        <refmeta>
                <refentrytitle>binfmt.d</refentrytitle>
                <manvolnum>5</manvolnum>
        </refmeta>

        <refnamediv>
                <refname>binfmt.d</refname>
                <refpurpose>Configure additional binary formats for
                executables at boot</refpurpose>
        </refnamediv>

        <refsynopsisdiv>
                <para><filename>/etc/binfmt.d/*.conf</filename></para>
                <para><filename>/run/binfmt.d/*.conf</filename></para>
                <para><filename>/usr/lib/binfmt.d/*.conf</filename></para>
        </refsynopsisdiv>

        <refsect1>
                <title>Description</title>

                <para>At boot,
                <citerefentry><refentrytitle>systemd-binfmt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
                reads configuration files from the above directories
                to register in the kernel additional binary
                formats for executables.</para>
        </refsect1>

        <refsect1>
                <title>Configuration Format</title>

                <para>Each file contains a list of binfmt_misc kernel
                binary format rules. Consult <ulink
                url="https://www.kernel.org/doc/Documentation/binfmt_misc.txt">binfmt_misc.txt</ulink>
                for more information on registration of additional
                binary formats and how to write rules.</para>

                <para>Empty lines and lines beginning with ; and # are
                ignored. Note that this means you may not use ; and #
                as delimiter in binary format rules.</para>
        </refsect1>

        <xi:include href="standard-conf.xml" xpointer="confd" />

        <refsect1>
                <title>Example</title>
                <example>
                        <title>/etc/binfmt.d/wine.conf example:</title>

                        <programlisting># Start WINE on Windows executables
:DOSWin:M::MZ::/usr/bin/wine:</programlisting>
                </example>
        </refsect1>

        <refsect1>
                <title>See Also</title>
                <para>
                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd-binfmt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>systemd-delta</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                        <citerefentry project='die-net'><refentrytitle>wine</refentrytitle><manvolnum>8</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>