man/binfmt.d.xml

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  Copyright 2011 Lennart Poettering

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<refentry id="binfmt.d">

        <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 at boot</refpurpose>
        </refnamediv>

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

        <refsect1>
                <title>Description</title>

		<para><command>systemd</command> uses
		files from the above directories to configure
		additional binary formats to register during boot in
		the kernel.</para>
        </refsect1>

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

                <para>Each file contains a list of binfmt_misc kernel
                binary format rules. Consult <ulink
                url="http://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>

                <para>Each configuration file is named in the style of
                <filename>&lt;program&gt;.conf</filename>.
                Files in <filename>/etc/</filename> overwrite
                files with the same name in <filename>/usr/lib/</filename>.
                Files in <filename>/run</filename> overwrite files with
                the same name in <filename>/etc/</filename> and
                <filename>/usr/lib/</filename>. Packages should install their
                configuration files in <filename>/usr/lib/</filename>, files
                in <filename>/etc/</filename> are reserved for the local
                administration, which possibly decides to overwrite the
                configurations installed from packages. All files are sorted
                by filename in alphabetical order, regardless in which of the
                directories they reside, to ensure that a specific
                configuration file takes precedence over another file with
                an alphabetically later name.</para>
        </refsect1>

        <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>wine</refentrytitle><manvolnum>8</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>