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<?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">
<!--
SPDX-License-Identifier: LGPL-2.1+
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<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/admin-guide/binfmt-misc.rst">binfmt-misc.rst</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>
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