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This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
181 lines
7.2 KiB
XML
181 lines
7.2 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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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">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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Copyright 2012 Lennart Poettering
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-->
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<refentry id="systemd-cryptsetup-generator" conditional='HAVE_LIBCRYPTSETUP'>
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<refentryinfo>
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<title>systemd-cryptsetup-generator</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-cryptsetup-generator</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-cryptsetup-generator</refname>
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<refpurpose>Unit generator for <filename>/etc/crypttab</filename></refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/usr/lib/systemd/system-generators/systemd-cryptsetup-generator</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-cryptsetup-generator</filename> is a
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generator that translates <filename>/etc/crypttab</filename> into
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native systemd units early at boot and when configuration of the
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system manager is reloaded. This will create
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<citerefentry><refentrytitle>systemd-cryptsetup@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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units as necessary.</para>
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<para><filename>systemd-cryptsetup-generator</filename> implements
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<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>Kernel Command Line</title>
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<para><filename>systemd-cryptsetup-generator</filename>
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understands the following kernel command line parameters:</para>
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<variablelist class='kernel-commandline-options'>
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<varlistentry>
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<term><varname>luks=</varname></term>
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<term><varname>rd.luks=</varname></term>
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<listitem><para>Takes a boolean argument. Defaults to
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<literal>yes</literal>. If <literal>no</literal>, disables the
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generator entirely. <varname>rd.luks=</varname> is honored
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only by initial RAM disk (initrd) while
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<varname>luks=</varname> is honored by both the main system
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and the initrd. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks.crypttab=</varname></term>
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<term><varname>rd.luks.crypttab=</varname></term>
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<listitem><para>Takes a boolean argument. Defaults to
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<literal>yes</literal>. If <literal>no</literal>, causes the
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generator to ignore any devices configured in
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<filename>/etc/crypttab</filename>
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(<varname>luks.uuid=</varname> will still work however).
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<varname>rd.luks.crypttab=</varname> is honored only by
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initial RAM disk (initrd) while
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<varname>luks.crypttab=</varname> is honored by both the main
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system and the initrd. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks.uuid=</varname></term>
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<term><varname>rd.luks.uuid=</varname></term>
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<listitem><para>Takes a LUKS superblock UUID as argument. This
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will activate the specified device as part of the boot process
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as if it was listed in <filename>/etc/crypttab</filename>.
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This option may be specified more than once in order to set up
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multiple devices. <varname>rd.luks.uuid=</varname> is honored
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only by initial RAM disk (initrd) while
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<varname>luks.uuid=</varname> is honored by both the main
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system and the initrd.</para>
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<para>If /etc/crypttab contains entries with the same UUID,
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then the name, keyfile and options specified there will be
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used. Otherwise, the device will have the name
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<literal>luks-UUID</literal>.</para>
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<para>If /etc/crypttab exists, only those UUIDs
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specified on the kernel command line
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will be activated in the initrd or the real root.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks.name=</varname></term>
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<term><varname>rd.luks.name=</varname></term>
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<listitem><para>Takes a LUKS super block UUID followed by an
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<literal>=</literal> and a name. This implies
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<varname>rd.luks.uuid=</varname> or
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<varname>luks.uuid=</varname> and will additionally make the
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LUKS device given by the UUID appear under the provided
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name.</para>
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<para><varname>rd.luks.name=</varname> is honored only by
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initial RAM disk (initrd) while <varname>luks.name=</varname>
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is honored by both the main system and the initrd.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks.options=</varname></term>
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<term><varname>rd.luks.options=</varname></term>
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<listitem><para>Takes a LUKS super block UUID followed by an
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<literal>=</literal> and a string of options separated by
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commas as argument. This will override the options for the
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given UUID.</para>
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<para>If only a list of options, without an UUID, is
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specified, they apply to any UUIDs not specified elsewhere,
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and without an entry in
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<filename>/etc/crypttab</filename>.</para><para>
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<varname>rd.luks.options=</varname> is honored only by initial
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RAM disk (initrd) while <varname>luks.options=</varname> is
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honored by both the main system and the initrd.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>luks.key=</varname></term>
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<term><varname>rd.luks.key=</varname></term>
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<listitem><para>Takes a password file name as argument or a
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LUKS super block UUID followed by a <literal>=</literal> and a
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password file name.</para>
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<para>For those entries specified with
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<varname>rd.luks.uuid=</varname> or
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<varname>luks.uuid=</varname>, the password file will be set
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to the one specified by <varname>rd.luks.key=</varname> or
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<varname>luks.key=</varname> of the corresponding UUID, or the
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password file that was specified without a UUID.</para>
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<para><varname>rd.luks.key=</varname>
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is honored only by initial RAM disk
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(initrd) while
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<varname>luks.key=</varname> is
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honored by both the main system and
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the initrd.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>crypttab</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-cryptsetup@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='die-net'><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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