Current File : //usr/share/help/C/system-admin-guide/lockdown-repartitioning.page
<page xmlns="http://projectmallard.org/1.0/"
xmlns:its="http://www.w3.org/2005/11/its"
type="topic" style="task"
id="lockdown-repartitioning">
<info>
<link type="guide" xref="user-settings#lockdown"/>
<link type="seealso" xref="dconf-lockdown" />
<revision pkgversion="3.14" date="2014-12-10" status="review"/>
<credit type="author copyright">
<name>Jana Svarova</name>
<email>jana.svarova@gmail.com</email>
<years>2014</years>
</credit>
<credit type="copyright editor">
<name>Ekaterina Gerasimova</name>
<email>kittykat3756@gmail.com</email>
<years>2014</years>
</credit>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
<desc>Prevent the user from changing disk partitions.</desc>
</info>
<title>Disable repartitioning</title>
<p><sys>polkit</sys> enables you to set permissions for individual
operations. For <sys>udisks2</sys>, the utility for disk management services,
the configuration is located at
<file>/usr/share/polkit-1/actions/org.freedesktop.udisks2.policy</file>. This
file contains a set of actions and default values, which can be overridden by
system administrator.</p>
<note style="tip">
<p>The <sys>polkit</sys> configuration in <file>/etc</file> overrides that
shipped by packages in <file>/usr/share</file>.</p>
</note>
<steps>
<title>Disable repartitioning</title>
<item>
<p>Create a file with the same content as in
<file>/usr/share/polkit-1/actions/org.freedesktop.udisks2.policy</file>:
<cmd>cp /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy /etc/share/polkit-1/actions/org.freedesktop.udisks2.policy</cmd></p>
<note style="important">
<p>Do not change the
<file>/usr/share/polkit-1/actions/org.freedesktop.udisks2.policy</file>
file, your changes will be overwritten by the next package update.</p>
</note>
</item>
<item>
<p>Delete any actions you do not need from within the
<code>policyconfig</code> element and add the following lines to the
<file>/etc/polkit-1/actions/org.freedesktop.udisks2.policy</file>
file:</p>
<listing>
<code><![CDATA[
<action id="org.freedesktop.udisks2.modify-device">
<description>Modify the drive settings</description>
<message>Authentication is required to modify drive settings</message>
<defaults>
<allow_any>no</allow_any>
<allow_inactive>no</allow_inactive>
<allow_active>yes</allow_active>
</defaults>
</action>
]]></code>
</listing>
<p>Replace <code>no</code> by <code>auth_admin</code> if you want to
ensure only the root user is able to carry out the action.</p>
</item>
<item>
<p>Save the changes.</p>
</item>
</steps>
<p>When the user tries to change the disk settings, the following message is
shown: <gui>Authentication is required to modify drive settings</gui>.</p>
</page>
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