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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
-<!ENTITY % entities SYSTEM "custom-entities.ent" >
-%entities;
-]>
+"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
+ SPDX-License-Identifier: LGPL-2.1+
+
This file is part of systemd.
Copyright 2013 Harald Hoyer
in <filename>/usr/lib/kernel/install.d/</filename>. This can be used to override a system-supplied
executables with a local file if needed; a symbolic link in <filename>/etc/kernel/install.d/</filename>
with the same name as an executable in <filename>/usr/lib/kernel/install.d/</filename>,
- pointing to /dev/null, disables the executable entirely. Executables must have the
+ pointing to <filename>/dev/null</filename>, disables the executable entirely. Executables must have the
extension <literal>.install</literal>; other extensions are ignored.</para>
+ <para>An executable should return <constant>0</constant> on success. It may also
+ return <constant>77</constant> to cause the whole operation to terminate
+ (executables later in lexical order will be skipped).</para>
</refsect1>
<refsect1>
<listitem>
<para><command>kernel-install</command> creates the directory
<filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename>
- and calls every executable
+ and calls executables from
<filename>/usr/lib/kernel/install.d/*.install</filename> and
<filename>/etc/kernel/install.d/*.install</filename> with
the arguments
- <programlisting>add <replaceable>KERNEL-VERSION</replaceable> <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename></programlisting>
+ <programlisting>add <replaceable>KERNEL-VERSION</replaceable> \
+ <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename> <replaceable>KERNEL-IMAGE</replaceable></programlisting>
</para>
<para>The kernel-install plugin <filename>50-depmod.install</filename> runs depmod for the <replaceable>KERNEL-VERSION</replaceable>.</para>
<varlistentry>
<term><command>remove <replaceable>KERNEL-VERSION</replaceable></command></term>
<listitem>
- <para>Calls every executable <filename>/usr/lib/kernel/install.d/*.install</filename>
+ <para>Calls executables from <filename>/usr/lib/kernel/install.d/*.install</filename>
and <filename>/etc/kernel/install.d/*.install</filename> with the arguments
<programlisting>remove <replaceable>KERNEL-VERSION</replaceable> <filename>/boot/<replaceable>MACHINE-ID</replaceable>/<replaceable>KERNEL-VERSION</replaceable>/</filename></programlisting>
</para>
<refsect1>
<title>Exit status</title>
- <para>If every executable returns with 0, 0 is returned, a non-zero failure code otherwise.</para>
+ <para>If every executable returns 0 or 77, 0 is returned, and a non-zero failure code otherwise.</para>
</refsect1>
<refsect1>
<para>
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <ulink url="http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec">Boot loader specification</ulink>
+ <ulink url="https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec">Boot loader specification</ulink>
</para>
</refsect1>