<?xml version="1.0"?> <!--*-nxml-*--> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"> <!-- SPDX-License-Identifier: LGPL-2.1-or-later --> <refentry id="binfmt.d" conditional='ENABLE_BINFMT' xmlns:xi="http://www.w3.org/2001/XInclude"> <refentryinfo> <title>binfmt.d</title> <productname>systemd</productname> </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><simplelist> <member><filename>/etc/binfmt.d/*.conf</filename></member> <member><filename>/run/binfmt.d/*.conf</filename></member> <member><filename>/usr/lib/binfmt.d/*.conf</filename></member> </simplelist></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 the kernel's <ulink url="https://docs.kernel.org/admin-guide/binfmt-misc.html">Kernel Support for miscellaneous Binary Formats (binfmt_misc)</ulink> documentation file for more information on registration of additional binary formats and how to write rules.</para> <para>Empty lines and lines beginning with <literal>;</literal> and <literal>#</literal> are ignored. Note that this means you may not use those symbols as the 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><simplelist type="inline"> <member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member> <member><citerefentry><refentrytitle>systemd-binfmt.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></member> <member><citerefentry><refentrytitle>systemd-delta</refentrytitle><manvolnum>1</manvolnum></citerefentry></member> <member><citerefentry project='die-net'><refentrytitle>wine</refentrytitle><manvolnum>8</manvolnum></citerefentry></member> </simplelist></para> </refsect1> </refentry>