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| <p class="apache">Apache HTTP Server Version 2.4</p> |
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| <div id="preamble"><h1>Apache Module mod_so</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_so.html" title="English"> en </a> | |
| <a href="../fr/mod/mod_so.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | |
| <a href="../ja/mod/mod_so.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | |
| <a href="../ko/mod/mod_so.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | |
| <a href="../tr/mod/mod_so.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> |
| </div> |
| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Loading of executable code and |
| modules into the server at start-up or restart time</td></tr> |
| <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>so_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_so.c</td></tr> |
| <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>This is a Base module (always included) on |
| Windows</td></tr></table> |
| <h3>Summary</h3> |
| |
| |
| <p>On selected operating systems this module can be used to |
| load modules into Apache HTTP Server at runtime via the <a href="../dso.html">Dynamic Shared Object</a> (DSO) mechanism, |
| rather than requiring a recompilation.</p> |
| |
| <p>On Unix, the loaded code typically comes from shared object |
| files (usually with <code>.so</code> extension), on Windows |
| this may either be the <code>.so</code> or <code>.dll</code> |
| extension.</p> |
| |
| <div class="warning"><h3>Warning</h3> |
| <p>Modules built for one major version of the Apache HTTP Server |
| will generally not work on another. (e.g. 1.3 vs. 2.0, or 2.0 vs. |
| 2.2) There are usually API changes between one major version and |
| another that require that modules be modified to work with the new |
| version.</p> |
| </div> |
| </div> |
| <div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3> |
| <ul id="topics"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#windows">Creating Loadable Modules for Windows</a></li> |
| </ul><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#loadfile">LoadFile</a></li> |
| <li><img alt="" src="../images/down.gif" /> <a href="#loadmodule">LoadModule</a></li> |
| </ul> |
| <h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_so">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_so">Report a bug</a></li></ul><h3>See also</h3> |
| <ul class="seealso"> |
| <li><a href="#comments_section">Comments</a></li></ul></div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="section"> |
| <h2><a name="windows" id="windows">Creating Loadable Modules for Windows</a></h2> |
| |
| <div class="note"><h3>Note</h3> |
| <p>On Windows, where loadable files typically have a file extension |
| of <code>.dll</code>, Apache httpd modules are called |
| <code>mod_whatever.so</code>, just as they are on other platforms. |
| However, you may encounter third-party modules, such as PHP for |
| example, that continue to use the <code>.dll</code> convention.</p> |
| |
| <p>While <code>mod_so</code> still loads modules with |
| <code>ApacheModuleFoo.dll</code> names, the new naming convention is |
| preferred; if you are converting your loadable module for 2.0, |
| please fix the name to this 2.0 convention.</p></div> |
| |
| <p>The Apache httpd module API is unchanged between the Unix and |
| Windows versions. Many modules will run on Windows with no or |
| little change from Unix, although others rely on aspects of the |
| Unix architecture which are not present in Windows, and will |
| not work.</p> |
| |
| <p>When a module does work, it can be added to the server in |
| one of two ways. As with Unix, it can be compiled into the |
| server. Because Apache httpd for Windows does not have the |
| <code>Configure</code> program of Apache httpd for Unix, the module's |
| source file must be added to the ApacheCore project file, and |
| its symbols must be added to the |
| <code>os\win32\modules.c</code> file.</p> |
| |
| <p>The second way is to compile the module as a DLL, a shared |
| library that can be loaded into the server at runtime, using |
| the <code class="directive">LoadModule</code> |
| directive. These module DLLs can be distributed and run on any |
| Apache httpd for Windows installation, without recompilation of the |
| server.</p> |
| |
| <p>To create a module DLL, a small change is necessary to the |
| module's source file: The module record must be exported from |
| the DLL (which will be created later; see below). To do this, |
| add the <code>AP_MODULE_DECLARE_DATA</code> (defined in the |
| Apache httpd header files) to your module's module record definition. |
| For example, if your module has:</p> |
| |
| <div class="example"><p><code> |
| module foo_module; |
| </code></p></div> |
| |
| <p>Replace the above with:</p> |
| <div class="example"><p><code> |
| module AP_MODULE_DECLARE_DATA foo_module; |
| </code></p></div> |
| |
| <p>Note that this will only be activated on Windows, so the |
| module can continue to be used, unchanged, with Unix if needed. |
| Also, if you are familiar with <code>.DEF</code> files, you can |
| export the module record with that method instead.</p> |
| |
| <p>Now, create a DLL containing your module. You will need to |
| link this against the libhttpd.lib export library that is |
| created when the libhttpd.dll shared library is compiled. You |
| may also have to change the compiler settings to ensure that |
| the Apache httpd header files are correctly located. You can find |
| this library in your server root's modules directory. It is |
| best to grab an existing module .dsp file from the tree to |
| assure the build environment is configured correctly, or |
| alternately compare the compiler and link options to your |
| .dsp.</p> |
| |
| <p>This should create a DLL version of your module. Now simply |
| place it in the <code>modules</code> directory of your server |
| root, and use the <code class="directive">LoadModule</code> |
| directive to load it.</p> |
| |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="LoadFile" id="LoadFile">LoadFile</a> <a name="loadfile" id="loadfile">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Link in the named object file or library</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LoadFile <em>filename</em> [<em>filename</em>] ...</code></td></tr> |
| <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> |
| <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_so</td></tr> |
| </table> |
| |
| <p>The <code class="directive">LoadFile</code> directive links in the named object files or |
| libraries when the server is started or restarted; this is used |
| to load additional code which may be required for some module |
| to work. <em>Filename</em> is either an absolute path or |
| relative to <a href="core.html#serverroot">ServerRoot</a>.</p> |
| |
| <p>For example:</p> |
| |
| <pre class="prettyprint lang-config">LoadFile "libexec/libxmlparse.so"</pre> |
| |
| |
| |
| </div> |
| <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> |
| <div class="directive-section"><h2><a name="LoadModule" id="LoadModule">LoadModule</a> <a name="loadmodule" id="loadmodule">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Links in the object file or library, and adds to the list |
| of active modules</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>LoadModule <em>module filename</em></code></td></tr> |
| <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> |
| <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> |
| <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_so</td></tr> |
| </table> |
| <p>The <code class="directive">LoadModule</code> 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, and is listed as the <a href="module-dict.html#ModuleIdentifier">Module Identifier</a> |
| in the module documentation.</p> |
| |
| <p>For example:</p> |
| |
| <pre class="prettyprint lang-config">LoadModule status_module "modules/mod_status.so"</pre> |
| |
| |
| <p>loads the named module from the modules subdirectory of the |
| ServerRoot.</p> |
| |
| </div> |
| </div> |
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| <a href="../tr/mod/mod_so.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> |
| </div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div> |
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