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7871c8e932
For many usecases it is useful to store the chassis type somewhere, and /etc/machine-info sounds like a good place. Ideally we could always detect the chassis type from firmware, but frequently that's not available and in many embedded devices probably entirely unrealistic. This patch adds a configurable setting CHASSIS= to /etc/machine-info and exposes this via hostnamectl/hostnamed. hostnamed will guess the chassis type from DMI if nothing is set explicitly. I also added support for detecting it from ACPI, which should be more useful as ACPI 5.0 actually knows a "tablet" chassis type, which neither DMI nor previous ACPI versions knew. This also enables DMI-based and ACPI-based detection for non-x86 systems as ACPI is apparently coming to ARM platforms soon. I tried to minimize the vocabulary of chassis types understood and added: desktop, laptop, server, tablet, handset. This is much less than either APCI or DMI know. If we need more types later on we can easily add them.
184 lines
8.4 KiB
XML
184 lines
8.4 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="machine-info">
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<refentryinfo>
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<title>machine-info</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>machine-info</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>machine-info</refname>
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<refpurpose>Local machine information file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/machine-info</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>The <filename>/etc/machine-info</filename> file
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contains machine meta data.</para>
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<para>The basic file format of
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<filename>machine-info</filename> is a
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newline-separated list of environment-like
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shell-compatible variable assignments. It is possible
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to source the configuration from shell scripts,
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however, beyond mere variable assignments no shell
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features are supported, allowing applications to read
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the file without implementing a shell compatible
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execution engine.</para>
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<para><filename>/etc/machine-info</filename> contains
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meta data about the machine that is set by the user or
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administrator.</para>
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<para>Depending on the operating system other
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configuration files might be checked for machine
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information as well, however only as fallback.</para>
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<para>You may use
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<citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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to change the settings of this file from the command
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line.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following machine meta data parameters may
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be set using
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<filename>/etc/machine-info</filename>:</para>
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<variablelist>
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<varlistentry>
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<term><varname>PRETTY_HOSTNAME=</varname></term>
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<listitem><para>A pretty
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human-readable UTF8 machine identifier
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string. This should contain a name
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like <literal>Lennart's
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Laptop</literal> which is useful to
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present to the user and does not
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suffer by the syntax limitations of
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internet domain names. If possible the
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internet host name as configured in
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<filename>/etc/hostname</filename>
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should be kept similar to this
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one. Example: if this value is
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<literal>Lennart's Computer</literal>
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an Internet host name of
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<literal>lennarts-computer</literal>
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might be a good choice. If this
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parameter is not set an application
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should fall back to the Internet host
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name for presentation
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purposes.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ICON_NAME=</varname></term>
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<listitem><para>An icon identifying
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this machine according to the <ulink
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url="http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">XDG
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Icon Naming Specification</ulink>. If
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this parameter is not set an
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application should fall back to
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<literal>computer</literal> or a
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similar icon name.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>CHASSIS=</varname></term>
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<listitem><para>The chassis
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type. Currently, the following chassis
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types are defined:
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<literal>desktop</literal>,
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<literal>laptop</literal>,
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<literal>server</literal>,
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<literal>tablet</literal>,
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<literal>handset</literal>, as well as
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the special chassis types
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<literal>vm</literal> and
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<literal>container</literal> for
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virtualized systems that lack an
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immediate physical chassis. Note that
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many systems allow detection of the
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chassis type automatically (based on
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firmware information or
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suchlike). This setting (if set) shall
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take precedence over automatically
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detected information and is useful to
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override misdetected configuration or
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to manually configure the chassis type
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where automatic detection is not
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available.</para></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>Example</title>
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<programlisting>PRETTY_HOSTNAME="Lennart's Tablet"
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ICON_NAME=computer-tablet
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CHASSIS=tablet</programlisting>
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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>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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