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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >dummy_seclabel</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="Additional Supplied Modules" HREF="contrib.html"><LINK REL="PREVIOUS" TITLE="dict_xsyn" HREF="dict-xsyn.html"><LINK REL="NEXT" TITLE="earthdistance" HREF="earthdistance.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="dict_xsyn" HREF="dict-xsyn.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="contrib.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Appendix F. Additional Supplied Modules</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="earthdistance" HREF="earthdistance.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="DUMMY-SECLABEL" >F.12. dummy_seclabel</A ></H1 ><P > The <TT CLASS="FILENAME" >dummy_seclabel</TT > module exists only to support regression testing of the <TT CLASS="COMMAND" >SECURITY LABEL</TT > statement. It is not intended to be used in production. </P ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN148041" >F.12.1. Rationale</A ></H2 ><P > The <TT CLASS="COMMAND" >SECURITY LABEL</TT > statement allows the user to assign security labels to database objects; however, security labels can only be assigned when specifically allowed by a loadable module, so this module is provided to allow proper regression testing. </P ><P > Security label providers intended to be used in production will typically be dependent on a platform-specific feature such as <SPAN CLASS="PRODUCTNAME" >SE-Linux</SPAN >. This module is platform-independent, and therefore better-suited to regression testing. </P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN148047" >F.12.2. Usage</A ></H2 ><P > Here's a simple example of usage: </P ><PRE CLASS="PROGRAMLISTING" ># postgresql.conf shared_preload_libraries = 'dummy_seclabel'</PRE ><PRE CLASS="PROGRAMLISTING" >postgres=# CREATE TABLE t (a int, b text); CREATE TABLE postgres=# SECURITY LABEL ON TABLE t IS 'classified'; SECURITY LABEL</PRE ><P > The <TT CLASS="FILENAME" >dummy_seclabel</TT > module provides only four hardcoded labels: <TT CLASS="LITERAL" >unclassified</TT >, <TT CLASS="LITERAL" >classified</TT >, <TT CLASS="LITERAL" >secret</TT >, and <TT CLASS="LITERAL" >top secret</TT >. It does not allow any other strings as security labels. </P ><P > These labels are not used to enforce access controls. They are only used to check whether the <TT CLASS="COMMAND" >SECURITY LABEL</TT > statement works as expected, or not. </P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN148060" >F.12.3. Author</A ></H2 ><P > KaiGai Kohei <CODE CLASS="EMAIL" ><<A HREF="mailto:kaigai@ak.jp.nec.com" >kaigai@ak.jp.nec.com</A >></CODE > </P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="dict-xsyn.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="earthdistance.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >dict_xsyn</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="contrib.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >earthdistance</TD ></TR ></TABLE ></DIV ></BODY ></HTML >