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  • Committer: Teddy Hogeborn
  • Date: 2019-02-11 05:14:10 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 376.
  • Revision ID: teddy@recompile.se-20190211051410-43fmzhy0vlafw2pc
Fix warnings from -Wimplicit-fallthrough

* plugin-runner.c (main/parse_opt): Add __builtin_unreachable() after
                                    calls to argp_state_help().
* plugins.d/askpass-fifo.c (error_plus): Add __builtin_unreachable()
                                         after calls to error().
* plugins.d/mandos-client.c (main/parse_opt) Add
                                             __builtin_unreachable()
                                             after calls to
                                             argp_state_help().
* plugins.d/password-prompt.c: - '' -

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plugins.d/mandos-client.xml
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY COMMANDNAME "mandos-client">
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<!ENTITY TIMESTAMP "2023-10-21">
 
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<!ENTITY TIMESTAMP "2019-02-10">
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<!ENTITY % common SYSTEM "../common.ent">
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%common;
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]>
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    </para>
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    <para>
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      This program is not meant to be run directly; it is really meant
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      to be run by other programs in the initial
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      <acronym>RAM</acronym> disk environment; see <xref
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      linkend="overview"/>.
 
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      to run as a plugin of the <application>Mandos</application>
 
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>, which runs in the
 
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      initial <acronym>RAM</acronym> disk environment because it is
 
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      specified as a <quote>keyscript</quote> in the <citerefentry>
 
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      <refentrytitle>crypttab</refentrytitle><manvolnum>5</manvolnum>
 
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      </citerefentry> file.
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    </para>
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  </refsect1>
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    <title>OPTIONS</title>
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    <para>
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      This program is commonly not invoked from the command line; it
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      is normally started by another program as described in <xref
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      linkend="description"/>.  Any command line options this program
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      accepts are therefore normally provided by the invoking program,
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      and not directly.
 
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      is normally started by the <application>Mandos</application>
 
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      plugin runner, see <citerefentry><refentrytitle
 
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      >plugin-runner</refentrytitle><manvolnum>8mandos</manvolnum>
 
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      </citerefentry>.  Any command line options this program accepts
 
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      are therefore normally provided by the plugin runner, and not
 
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      directly.
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    </para>
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    <variablelist>
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    <title>OVERVIEW</title>
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    <xi:include href="../overview.xml"/>
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    <para>
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      This program is the client part.  It is run automatically in an
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      initial <acronym>RAM</acronym> disk environment.
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    </para>
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    <para>
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      In an initial <acronym>RAM</acronym> disk environment using
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      <citerefentry><refentrytitle>systemd</refentrytitle>
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      <manvolnum>1</manvolnum></citerefentry>, this program is started
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      by the <application>Mandos</application> <citerefentry>
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      <refentrytitle>password-agent</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>, which in turn is
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      started automatically by the <citerefentry>
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      <refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum>
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      </citerefentry> <quote>Password Agent</quote> system.
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    </para>
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    <para>
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      In the case of a non-<citerefentry>
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      <refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum>
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      </citerefentry> environment, this program is started as a plugin
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      of the <application>Mandos</application> <citerefentry>
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      <refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>, which runs in the
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      initial <acronym>RAM</acronym> disk environment because it is
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      specified as a <quote>keyscript</quote> in the <citerefentry>
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      <refentrytitle>crypttab</refentrytitle><manvolnum>5</manvolnum>
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      </citerefentry> file.
 
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      This program is the client part.  It is a plugin started by
 
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry> which will run in
 
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      an initial <acronym>RAM</acronym> disk environment.
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    </para>
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    <para>
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      This program could, theoretically, be used as a keyscript in
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      <filename>/etc/crypttab</filename>, but it would then be
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      impossible to enter a password for the encrypted root disk at
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      the console, since this program does not read from the console
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      at all.
 
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      at all.  This is why a separate plugin runner (<citerefentry>
 
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      <refentrytitle>plugin-runner</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>) is used to run
 
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      both this program and others in in parallel,
 
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      <emphasis>one</emphasis> of which (<citerefentry>
 
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      <refentrytitle>password-prompt</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>) will prompt for
 
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      passwords on the system console.
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    </para>
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  </refsect1>
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          <para>
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            This environment variable will be assumed to contain the
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            directory containing any helper executables.  The use and
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            nature of these helper executables, if any, is purposely
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            not documented.
 
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            nature of these helper executables, if any, is
 
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            purposefully not documented.
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        </para>
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        </listitem>
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      </varlistentry>
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    <title>EXAMPLE</title>
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    <para>
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      Note that normally, command line options will not be given
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      directly, but passed on via the program responsible for starting
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      this program; see <xref linkend="overview"/>.
 
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      directly, but via options for the Mandos <citerefentry
 
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      ><refentrytitle>plugin-runner</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>.
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    </para>
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    <informalexample>
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      <para>
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  <refsect1 id="security">
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    <title>SECURITY</title>
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    <para>
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      This program assumes that it is set-uid to root, and will switch
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      back to the original (and presumably non-privileged) user and
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      group after bringing up the network interface.
 
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      This program is set-uid to root, but will switch back to the
 
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      original (and presumably non-privileged) user and group after
 
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      bringing up the network interface.
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    </para>
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    <para>
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      To use this program for its intended purpose (see <xref
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      <manvolnum>5</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>mandos</refentrytitle>
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      <manvolnum>8</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>password-agent</refentrytitle>
 
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      <citerefentry><refentrytitle>password-prompt</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>
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      </varlistentry>
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      <varlistentry>
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        <term>
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          <ulink url="https://www.avahi.org/">Avahi</ulink>
 
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          <ulink url="http://www.avahi.org/">Avahi</ulink>
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        </term>
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      <listitem>
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        <para>