mirror of
https://github.com/SELinuxProject/selinux
synced 2024-12-12 00:55:03 +00:00
36f62b78f1
Since the secilc compiler is independent of libsepol, move secilc out of libsepol. Linke secilc dynamically rather than statically with libsepol. - Move secilc source, test policies, docs, and secilc manpage to secilc directory. - Remove unneeded Makefile from libsepol/cil. To build secilc, run make in the secilc directory. - Add target to install the secilc binary to /usr/bin/. - Create an Android makefile for secilc and move secilc out of libsepol Android makefile. - Add cil_set_mls to libsepol public API as it is needed by secilc. - Remove policy.conf from testing since it is no longer used. Signed-off-by: Yuli Khodorkovskiy <ykhodorkovskiy@tresys.com>
421 lines
18 KiB
XML
421 lines
18 KiB
XML
<!-- Common Interface Language (CIL) Reference Guide -->
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<!-- user_statements.xml -->
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<sect1>
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<title>User Statements</title>
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<sect2 id="user">
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<title>user</title>
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<para>Declares an SELinux user identifier in the current namespace.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(user user_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>user</literal></para>
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</entry>
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<entry>
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<para>The <literal>user</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>The SELinux <literal>user</literal> identifier.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This will declare an SELinux user as <literal>unconfined.user</literal>:</para>
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<programlisting><![CDATA[
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(block unconfined
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(user user)
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="userrole">
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<title>userrole</title>
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<para>Associates a previously declared <literal><link linkend="user">user</link></literal> identifier with a previously declared <literal><link linkend="role">role</link></literal> identifier.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(userrole user_id role_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>userrole</literal></para>
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</entry>
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<entry>
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<para>The <literal>userrole</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>role_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared <literal><link linkend="role">role</link></literal> or <literal><link linkend="roleattribute">roleattribute</link></literal> identifier.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will associate <literal>unconfined.user</literal> to <literal>unconfined.role</literal>:</para>
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<programlisting><![CDATA[
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(block unconfined
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(user user)
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(role role)
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(userrole user role)
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="userlevel">
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<title>userlevel</title>
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<para>Associates a previously declared <literal><link linkend="user">user</link></literal> identifier with a previously declared <literal><link linkend="level">level</link></literal> identifier. The <literal><link linkend="level">level</link></literal> may be named or anonymous.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(userlevel user_id level_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>userlevel</literal></para>
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</entry>
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<entry>
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<para>The <literal>userlevel</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>level_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared <literal><link linkend="level">level</link></literal> identifier. This may consist of a single <literal><link linkend="sensitivity">sensitivity</link></literal> with zero or more mixed named and anonymous <literal><link linkend="category">category</link></literal>'s as discussed in the <literal><link linkend="level">level</link></literal> statement.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will associate <literal>unconfined.user</literal> with a named <literal><link linkend="level">level</link></literal> of <literal>systemlow</literal>:</para>
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<programlisting><![CDATA[
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(sensitivity s0)
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(level systemlow (s0))
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(block unconfined
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(user user)
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(userlevel user systemlow)
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; An anonymous example:
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;(userlevel user (s0))
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="userrange">
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<title>userrange</title>
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<para>Associates a previously declared <literal><link linkend="user">user</link></literal> identifer with a previously declared <literal><link linkend="levelrange">levelrange</link></literal> identifier. The <literal><link linkend="levelrange">levelrange</link></literal> may be named or anonymous.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(userrange user_id levelrange_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>userrange</literal></para>
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</entry>
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<entry>
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<para>The <literal>userrange</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>levelrange_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared <literal><link linkend="levelrange">levelrange</link></literal> identifier. This may be formed by named or anonymous components as discussed in the <literal><link linkend="levelrange">levelrange</link></literal> statement and shown in the examples.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will associate <literal>unconfined.user</literal> with a named <literal><link linkend="levelrange">levelrange</link></literal> of <literal>low_high</literal>, other anonymous examples are also shown:</para>
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<programlisting><![CDATA[
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(category c0)
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(category c1)
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(categoryorder (c0 c1))
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(sensitivity s0)
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(sensitivity s1)
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(dominance (s0 s1))
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(sensitivitycategory s0 (c0 c1))
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(level systemLow (s0))
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(level systemHigh (s0 (c0 c1)))
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(levelrange low_high (systemLow systemHigh))
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(block unconfined
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(user user)
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(role role)
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(userrole user role)
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; Named example:
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(userrange user low_high)
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; Anonymous examples:
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;(userrange user (systemLow systemHigh))
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;(userrange user (systemLow (s0 (c0 c1))))
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;(userrange user ((s0) (s0 (c0 c1))))
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="userbounds">
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<title>userbounds</title>
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<para>Defines a hierarchical relationship between users where the child user cannot have more priviledges than the parent.</para>
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<para>Notes:</para>
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<itemizedlist>
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<listitem><para>It is not possible to bind the parent to more than one child.</para></listitem>
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<listitem><para>While this is added to the binary policy, it is not enforced by the SELinux kernel services.</para></listitem>
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</itemizedlist>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(userbounds parent_user_id child_user_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>userbounds</literal></para>
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</entry>
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<entry>
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<para>The <literal>userbounds</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>parent_user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>child_user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>The user <literal>test</literal> cannot have greater priviledges than <literal>unconfined.user</literal>:</para>
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<programlisting><![CDATA[
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(user test)
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(unconfined
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(user user)
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(userbounds user .test)
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="userprefix">
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<title>userprefix</title>
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<para>Declare a user prefix that will be replaced by the file labeling utilities described at <ulink url="http://selinuxproject.org/page/PolicyStoreConfigurationFiles#file_contexts.template_File">http://selinuxproject.org/page/PolicyStoreConfigurationFiles</ulink> that details the <filename>file_contexts</filename> entries.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(userprefix user_id prefix)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>userprefix</literal></para>
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</entry>
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<entry>
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<para>The <literal>userprefix</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>prefix</literal></para>
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</entry>
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<entry>
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<para>The string to be used by the file labeling utilities.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will associate <literal>unconfined.admin</literal> user with a prefix of "<literal>user</literal>":</para>
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<programlisting><![CDATA[
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(block unconfined
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(user admin
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(userprefix admin user)
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="selinuxuser">
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<title>selinuxuser</title>
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<para>Associates a GNU/Linux user to a previously declared <literal><link linkend="user">user</link></literal> identifier with a previously declared MLS <literal><link linkend="userrange">userrange</link></literal>. Note that the <literal><link linkend="userrange">userrange</link></literal> is required even if the policy is non-MCS/MLS.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(selinuxuser user_name user_id userrange_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>selinuxuser</literal></para>
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</entry>
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<entry>
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<para>The <literal>selinuxuser</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_name</literal></para>
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</entry>
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<entry>
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<para>A string representing the GNU/Linux user name</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>userrange_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared <literal><link linkend="userrange">userrange</link></literal> identifier that has been associated to the <literal>user</literal> identifier. This may be formed by named or anonymous components as discussed in the <literal><link linkend="userrange">userrange</link></literal> statement and shown in the examples.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will associate <literal>unconfined.admin</literal> user with a GNU / Linux user "<literal>admin_1</literal>":</para>
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<programlisting><![CDATA[
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(block unconfined
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(user admin)
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(selinuxuser admin_1 admin low_low)
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)]]>
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</programlisting>
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</sect2>
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<sect2 id="selinuxuserdefault">
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<title>selinuxuserdefault</title>
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<para>Declares the default SELinux user. Only one <literal>selinuxuserdefault</literal> statement is allowed in the policy. Note that the <literal><link linkend="userrange">userrange</link></literal> identifier is required even if the policy is non-MCS/MLS.</para>
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<para><emphasis role="bold">Statement definition:</emphasis></para>
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<programlisting><![CDATA[(selinuxuserdefault user_id userrange_id)]]></programlisting>
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<para><emphasis role="bold">Where:</emphasis></para>
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<informaltable frame="all">
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<tgroup cols="2">
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<colspec colwidth="2 *"/>
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<colspec colwidth="6 *"/>
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<tbody>
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<row>
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<entry>
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<para><literal>selinuxuserdefault</literal></para>
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</entry>
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<entry>
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<para>The <literal>selinuxuserdefault</literal> keyword.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>user_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared SELinux <literal><link linkend="user">user</link></literal> identifier.</para>
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</entry>
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</row>
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<row>
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<entry>
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<para><literal>userrange_id</literal></para>
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</entry>
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<entry>
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<para>A previously declared <literal><link linkend="userrange">userrange</link></literal> identifier that has been associated to the <literal><link linkend="user">user</link></literal> identifier. This may be formed by named or anonymous components as discussed in the <literal><link linkend="userrange">userrange</link></literal> statement and shown in the examples.</para>
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</entry>
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</row>
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</tbody></tgroup>
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</informaltable>
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<para><emphasis role="bold">Example:</emphasis></para>
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<para>This example will define the <literal>unconfined.user</literal> as the default SELinux user:</para>
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<programlisting><![CDATA[
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(block unconfined
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(user user)
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(selinuxuserdefault user low_low)
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)]]>
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</programlisting>
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</sect2>
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</sect1>
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