systemd-random-seed.service.xml 3.09 KB
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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">
<!--
  This file is part of systemd.

  Copyright 2012 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.

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<refentry id="systemd-random-seed.service" conditional='ENABLE_RANDOMSEED'>
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        <refentryinfo>
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                <title>systemd-random-seed.service</title>
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                <productname>systemd</productname>

                <authorgroup>
                        <author>
                                <contrib>Developer</contrib>
                                <firstname>Lennart</firstname>
                                <surname>Poettering</surname>
                                <email>lennart@poettering.net</email>
                        </author>
                </authorgroup>
        </refentryinfo>

        <refmeta>
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                <refentrytitle>systemd-random-seed.service</refentrytitle>
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                <manvolnum>8</manvolnum>
        </refmeta>

        <refnamediv>
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                <refname>systemd-random-seed.service</refname>
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                <refname>systemd-random-seed</refname>
                <refpurpose>Load and save the system random seed at boot and shutdown</refpurpose>
        </refnamediv>

        <refsynopsisdiv>
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                <para><filename>systemd-random-seed.service</filename></para>
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                <para><filename>/usr/lib/systemd/systemd-random-seed</filename></para>
        </refsynopsisdiv>

        <refsect1>
                <title>Description</title>

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                <para><filename>systemd-random-seed.service</filename>
                is a service that restores the random seed of the
                system at early-boot and saves it at shutdown. See
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                <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry>
                for details. Saving/restoring the random seed across
                boots increases the amount of available entropy early
                at boot. On disk the random seed is stored in
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                <filename>/var/lib/systemd/random-seed</filename>.</para>
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        </refsect1>

        <refsect1>
                <title>See Also</title>
                <para>
                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                        <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>