shadow/man/newgidmap.1.xml

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  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<refentry id='newgidmap.1'>
  <refmeta>
    <refentrytitle>newgidmap</refentrytitle>
    <manvolnum>1</manvolnum>
    <refmiscinfo class="sectdesc">User Commands</refmiscinfo>
    <refmiscinfo class="source">shadow-utils</refmiscinfo>
    <refmiscinfo class="version">&SHADOW_UTILS_VERSION;</refmiscinfo>
  </refmeta>
  <refnamediv id='name'>
    <refname>newgidmap</refname>
    <refpurpose>set the gid mapping of a user namespace</refpurpose>
  </refnamediv>

  <refsynopsisdiv id='synopsis'>
    <cmdsynopsis>
      <command>newgidmap</command>
      <arg choice='plain'>
	<replaceable>pid</replaceable>
      </arg>
      <arg choice='plain'>
	<replaceable>gid</replaceable>
      </arg>
      <arg choice='plain'>
	<replaceable>lowergid</replaceable>
      </arg>
      <arg choice='plain'>
	<replaceable>count</replaceable>
      </arg>
      <arg choice='opt'>
	<arg choice='plain'>
	  <replaceable>pid</replaceable>
	</arg>
	<arg choice='plain'>
	  <replaceable>gid</replaceable>
	</arg>
	<arg choice='plain'>
	  <replaceable>lowergid</replaceable>
	</arg>
	<arg choice='plain'>
	  <replaceable>count</replaceable>
	</arg>
	<arg choice='opt'>
	  <replaceable>...</replaceable>
	</arg>
      </arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1 id='description'>
    <title>DESCRIPTION</title>
    <para>
      The <command>newgidmap</command> sets <filename>/proc/[pid]/gid_map</filename> based on it's
      command line arguments and the gids allowed in <filename>/etc/subgid</filename>.
    </para>

  </refsect1>

  <refsect1 id='options'>
    <title>OPTIONS</title>
    <para>
      There currently are no options to the <command>newgidmap</command> command.
    </para>
    <variablelist remap='IP'>
    </variablelist>
  </refsect1>

  <refsect1 id='note'>
    <title>NOTE</title>
    <para>
      The only restriction placed on the login shell is that the command
      name must be listed in <filename>/etc/shells</filename>, unless the
      invoker is the superuser, and then any value may be added. An
      account with a restricted login shell may not change her login shell.
      For this reason, placing <filename>/bin/rsh</filename> in
      <filename>/etc/shells</filename> is discouraged since accidentally
      changing to a restricted shell would prevent the user from ever
      changing her login shell back to its original value.
    </para>
  </refsect1>


  <refsect1 id='files'>
    <title>FILES</title>
    <variablelist>
      <varlistentry>
	<term><filename>/etc/subgid</filename></term>
	<listitem>
	  <para>List of users subordinate user IDs.</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><filename>/proc/[pid]/gid_map</filename></term>
	<listitem>
	  <para>Mapping of gids from one between user namespaces.</para>
	</listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1 id='see_also'>
    <title>SEE ALSO</title>
    <para>
      <citerefentry>
	<refentrytitle>login.defs</refentrytitle><manvolnum>5</manvolnum>
      </citerefentry>,
      <citerefentry>
	<refentrytitle>useradd</refentrytitle><manvolnum>8</manvolnum>
      </citerefentry>,
      <citerefentry>
	<refentrytitle>usermod</refentrytitle><manvolnum>8</manvolnum>
      </citerefentry>,
      <citerefentry>
	<refentrytitle>newusers</refentrytitle><manvolnum>8</manvolnum>
      </citerefentry>,
      <citerefentry>
	<refentrytitle>userdel</refentrytitle><manvolnum>8</manvolnum>
      </citerefentry>,
      <citerefentry>
	<refentrytitle>subgid</refentrytitle><manvolnum>5</manvolnum>
      </citerefentry>.
    </para>
  </refsect1>
</refentry>