htdocs/manual/mod/mod_dld.html - httpd - Git at Google

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     <title>Apache module mod_dld</title>

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       <img src="../images/sub.gif" alt="[APACHE DOCUMENTATION]" />

       <h3>Apache HTTP Server Version 1.3</h3>
         <div class="obsolete"><p>You are looking at the documentation for the
         1.3 version of the Apache HTTP Server, which is no longer
         maintained, and has been declared "end of life". If you are in
         fact still using the 1.3 version, <strong style="font-weight: inherit;">please consider upgrading</strong>.
         The current version of the server is <a
         href="http://httpd.apache.org/docs/2.4/">2.4</a>.</p>
         <p>This module is obsolete. As of version 1.3 of Apache, it has been replaced with
         <a
         href="http://httpd.apache.org/docs/2.4/mod/mod_so.html"
         >mod_so</a>.</p>

         </div>

     </div>

     <h1 align="CENTER">Module mod_dld</h1>
     This module is
     contained in the <code>mod_dld.c</code> file, and is not
     compiled in by default. It provides for loading of executable
     code and modules into the server at start-up time, using the
     GNU dld library.

     <h2>Summary</h2>
     The optional dld module is a proof-of-concept piece of code
     which loads other modules into the server as it is configuring
     itself (the first time only; for now, rereading the config
     files cannot affect the state of loaded modules), using the GNU
     dynamic linking library, DLD. It isn't compiled into the server
     by default, since not everyone has DLD, but it works when I try
     it. (Famous last words.)

     <p>Note that for some reason, <code>LoadFile /lib/libc.a</code>
     seems to be required for just about everything.</p>

     <p>Note: that DLD needs to read the symbol table out of the
     server binary when starting up; these commands will fail if the
     server can't find its own binary when it starts up, or if that
     binary is stripped.</p>

     <h2>Directives</h2>

     <ul>
       <li><a href="#loadfile">LoadFile</a></li>

       <li><a href="#loadmodule">LoadModule</a></li>
     </ul>
     <hr />

     <h2><a id="loadfile" name="loadfile">LoadFile</a></h2>

     <a href="directive-dict.html#Syntax"
     rel="Help"><strong>Syntax:</strong></a> LoadFile <em>filename
     filename ...</em><br />
      <a href="directive-dict.html#Context"
     rel="Help"><strong>Context:</strong></a> server config<br />
      <a href="directive-dict.html#Status"
     rel="Help"><strong>Status:</strong></a> Experimental<br />
      <a href="directive-dict.html#Module"
     rel="Help"><strong>Module:</strong></a> mod_dld

     <p>The LoadFile directive links in the named object files or
     libraries when the server is started; this is used to load
     additional code which may be required for some module to work.
     <em>Filename</em> is relative to <a
     href="core.html#serverroot">ServerRoot</a>.</p>
     <hr />

     <h2><a id="loadmodule" name="loadmodule">LoadModule</a></h2>

     <a href="directive-dict.html#Syntax"
     rel="Help"><strong>Syntax:</strong></a> LoadModule <em>module
     filename</em><br />
      <a href="directive-dict.html#Context"
     rel="Help"><strong>Context:</strong></a> server config<br />
      <a href="directive-dict.html#Status"
     rel="Help"><strong>Status:</strong></a> Experimental<br />
      <a href="directive-dict.html#Module"
     rel="Help"><strong>Module:</strong></a> mod_dld

     <p>The LoadModule directive links in the object file or library
     <em>filename</em> and adds the module structure named
     <em>module</em> to the list of active modules. <em>Module</em>
     is the name of the external variable of type
     <code>module</code> in the file. Example:</p>

     <blockquote>
       <code>LoadModule ai_backcompat_module
       modules/mod_ai_backcompat.o<br />
        LoadFile /lib/libc.a</code>
     </blockquote>
     loads the module in the modules subdirectory of the ServerRoot.


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	margin: 0;
	padding: 8px 10px;
	padding-left: 50px;
	padding-bottom: 10px;
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	vlink="#000080" alink="#FF0000">

	<div align="CENTER">
	<img src="../images/sub.gif" alt="[APACHE DOCUMENTATION]" />

	<h3>Apache HTTP Server Version 1.3</h3>
	<div class="obsolete"><p>You are looking at the documentation for the
	1.3 version of the Apache HTTP Server, which is no longer
	maintained, and has been declared "end of life". If you are in
	fact still using the 1.3 version, <strong style="font-weight: inherit;">please consider upgrading</strong>.
	The current version of the server is <a
	href="http://httpd.apache.org/docs/2.4/">2.4</a>.</p>
	<p>This module is obsolete. As of version 1.3 of Apache, it has been replaced with
	<a
	href="http://httpd.apache.org/docs/2.4/mod/mod_so.html"
	>mod_so</a>.</p>

	</div>

	</div>

	<h1 align="CENTER">Module mod_dld</h1>
	This module is
	contained in the <code>mod_dld.c</code> file, and is not
	compiled in by default. It provides for loading of executable
	code and modules into the server at start-up time, using the
	GNU dld library.

	<h2>Summary</h2>
	The optional dld module is a proof-of-concept piece of code
	which loads other modules into the server as it is configuring
	itself (the first time only; for now, rereading the config
	files cannot affect the state of loaded modules), using the GNU
	dynamic linking library, DLD. It isn't compiled into the server
	by default, since not everyone has DLD, but it works when I try
	it. (Famous last words.)

	<p>Note that for some reason, <code>LoadFile /lib/libc.a</code>
	seems to be required for just about everything.</p>

	<p>Note: that DLD needs to read the symbol table out of the
	server binary when starting up; these commands will fail if the
	server can't find its own binary when it starts up, or if that
	binary is stripped.</p>

	<h2>Directives</h2>

	<ul>
	<li><a href="#loadfile">LoadFile</a></li>

	<li><a href="#loadmodule">LoadModule</a></li>
	</ul>
	<hr />

	<h2><a id="loadfile" name="loadfile">LoadFile</a></h2>

	<a href="directive-dict.html#Syntax"
	rel="Help"><strong>Syntax:</strong></a> LoadFile <em>filename
	filename ...</em><br />
	<a href="directive-dict.html#Context"
	rel="Help"><strong>Context:</strong></a> server config<br />
	<a href="directive-dict.html#Status"
	rel="Help"><strong>Status:</strong></a> Experimental<br />
	<a href="directive-dict.html#Module"
	rel="Help"><strong>Module:</strong></a> mod_dld

	<p>The LoadFile directive links in the named object files or
	libraries when the server is started; this is used to load
	additional code which may be required for some module to work.
	<em>Filename</em> is relative to <a
	href="core.html#serverroot">ServerRoot</a>.</p>
	<hr />

	<h2><a id="loadmodule" name="loadmodule">LoadModule</a></h2>

	<a href="directive-dict.html#Syntax"
	rel="Help"><strong>Syntax:</strong></a> LoadModule <em>module
	filename</em><br />
	<a href="directive-dict.html#Context"
	rel="Help"><strong>Context:</strong></a> server config<br />
	<a href="directive-dict.html#Status"
	rel="Help"><strong>Status:</strong></a> Experimental<br />
	<a href="directive-dict.html#Module"
	rel="Help"><strong>Module:</strong></a> mod_dld

	<p>The LoadModule directive links in the object file or library
	<em>filename</em> and adds the module structure named
	<em>module</em> to the list of active modules. <em>Module</em>
	is the name of the external variable of type
	<code>module</code> in the file. Example:</p>

	<blockquote>
	<code>LoadModule ai_backcompat_module
	modules/mod_ai_backcompat.o<br />
	LoadFile /lib/libc.a</code>
	</blockquote>
	loads the module in the modules subdirectory of the ServerRoot.


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