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<title>Debugging with GDB: Auto-loading</title>
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<a name="Auto_002dloading"></a>
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<div class="header">
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<p>
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Next: <a href="Messages_002fWarnings.html#Messages_002fWarnings" accesskey="n" rel="next">Messages/Warnings</a>, Previous: <a href="ABI.html#ABI" accesskey="p" rel="prev">ABI</a>, Up: <a href="Controlling-GDB.html#Controlling-GDB" accesskey="u" rel="up">Controlling GDB</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="Automatically-loading-associated-files"></a>
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<h3 class="section">22.7 Automatically loading associated files</h3>
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<a name="index-auto_002dloading"></a>
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<p><small>GDB</small> sometimes reads files with commands and settings automatically,
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without being explicitly told so by the user. We call this feature
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<em>auto-loading</em>. While auto-loading is useful for automatically adapting
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<small>GDB</small> to the needs of your project, it can sometimes produce unexpected
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results or introduce security risks (e.g., if the file comes from untrusted
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sources).
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory" accesskey="1">Init File in the Current Directory</a>:</td><td> </td><td align="left" valign="top">‘<samp>set/show/info auto-load local-gdbinit</samp>’
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</td></tr>
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<tr><td align="left" valign="top">• <a href="libthread_005fdb_002eso_002e1-file.html#libthread_005fdb_002eso_002e1-file" accesskey="2">libthread_db.so.1 file</a>:</td><td> </td><td align="left" valign="top">‘<samp>set/show/info auto-load libthread-db</samp>’
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</td></tr>
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<tr><th colspan="3" align="left" valign="top"><pre class="menu-comment">
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</pre></th></tr><tr><td align="left" valign="top">• <a href="Auto_002dloading-safe-path.html#Auto_002dloading-safe-path" accesskey="3">Auto-loading safe path</a>:</td><td> </td><td align="left" valign="top">‘<samp>set/show/info auto-load safe-path</samp>’
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Auto_002dloading-verbose-mode.html#Auto_002dloading-verbose-mode" accesskey="4">Auto-loading verbose mode</a>:</td><td> </td><td align="left" valign="top">‘<samp>set/show debug auto-load</samp>’
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</td></tr>
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</table>
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<p>There are various kinds of files <small>GDB</small> can automatically load.
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In addition to these files, <small>GDB</small> supports auto-loading code written
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in various extension languages. See <a href="Auto_002dloading-extensions.html#Auto_002dloading-extensions">Auto-loading extensions</a>.
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</p>
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<p>Note that loading of these associated files (including the local <samp>.gdbinit</samp>
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file) requires accordingly configured <code>auto-load safe-path</code>
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(see <a href="Auto_002dloading-safe-path.html#Auto_002dloading-safe-path">Auto-loading safe path</a>).
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</p>
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<p>For these reasons, <small>GDB</small> includes commands and options to let you
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control when to auto-load files and which files should be auto-loaded.
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</p>
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<dl compact="compact">
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<dd><a name="set-auto_002dload-off"></a><a name="index-set-auto_002dload-off"></a>
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</dd>
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<dt><code>set auto-load off</code></dt>
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<dd><p>Globally disable loading of all auto-loaded files.
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You may want to use this command with the ‘<samp>-iex</samp>’ option
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(see <a href="Startup.html#Option-_002dinit_002deval_002dcommand">Option -init-eval-command</a>) such as:
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</p><div class="smallexample">
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<pre class="smallexample">$ <kbd>gdb -iex "set auto-load off" untrusted-executable corefile</kbd>
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</pre></div>
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<p>Be aware that system init file (see <a href="System_002dwide-configuration.html#System_002dwide-configuration">System-wide configuration</a>)
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and init files from your home directory (see <a href="Startup.html#Home-Directory-Init-File">Home Directory Init File</a>)
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still get read (as they come from generally trusted directories).
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To prevent <small>GDB</small> from auto-loading even those init files, use the
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<samp>-nx</samp> option (see <a href="Mode-Options.html#Mode-Options">Mode Options</a>), in addition to
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<code>set auto-load no</code>.
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</p>
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<a name="show-auto_002dload"></a><a name="index-show-auto_002dload"></a>
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</dd>
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<dt><code>show auto-load</code></dt>
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<dd><p>Show whether auto-loading of each specific ‘<samp>auto-load</samp>’ file(s) is enabled
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or disabled.
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</p>
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<div class="smallexample">
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<pre class="smallexample">(gdb) show auto-load
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gdb-scripts: Auto-loading of canned sequences of commands scripts is on.
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libthread-db: Auto-loading of inferior specific libthread_db is on.
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local-gdbinit: Auto-loading of .gdbinit script from current directory
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is on.
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python-scripts: Auto-loading of Python scripts is on.
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safe-path: List of directories from which it is safe to auto-load files
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is $debugdir:$datadir/auto-load.
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scripts-directory: List of directories from which to load auto-loaded scripts
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is $debugdir:$datadir/auto-load.
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</pre></div>
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<a name="info-auto_002dload"></a><a name="index-info-auto_002dload"></a>
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</dd>
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<dt><code>info auto-load</code></dt>
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<dd><p>Print whether each specific ‘<samp>auto-load</samp>’ file(s) have been auto-loaded or
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not.
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</p>
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<div class="smallexample">
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<pre class="smallexample">(gdb) info auto-load
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gdb-scripts:
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Loaded Script
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Yes /home/user/gdb/gdb-gdb.gdb
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libthread-db: No auto-loaded libthread-db.
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local-gdbinit: Local .gdbinit file "/home/user/gdb/.gdbinit" has been
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loaded.
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python-scripts:
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Loaded Script
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Yes /home/user/gdb/gdb-gdb.py
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</pre></div>
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</dd>
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</dl>
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<p>These are <small>GDB</small> control commands for the auto-loading:
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</p>
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<table>
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<tr><td width="50%">See <a href="#set-auto_002dload-off">set auto-load off</a>.</td><td width="50%">Disable auto-loading globally.</td></tr>
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<tr><td width="50%">See <a href="#show-auto_002dload">show auto-load</a>.</td><td width="50%">Show setting of all kinds of files.</td></tr>
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<tr><td width="50%">See <a href="#info-auto_002dload">info auto-load</a>.</td><td width="50%">Show state of all kinds of files.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-sequences.html#set-auto_002dload-gdb_002dscripts">set auto-load gdb-scripts</a>.</td><td width="50%">Control for <small>GDB</small> command scripts.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-sequences.html#show-auto_002dload-gdb_002dscripts">show auto-load gdb-scripts</a>.</td><td width="50%">Show setting of <small>GDB</small> command scripts.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-sequences.html#info-auto_002dload-gdb_002dscripts">info auto-load gdb-scripts</a>.</td><td width="50%">Show state of <small>GDB</small> command scripts.</td></tr>
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<tr><td width="50%">See <a href="Python-Auto_002dloading.html#set-auto_002dload-python_002dscripts">set auto-load python-scripts</a>.</td><td width="50%">Control for <small>GDB</small> Python scripts.</td></tr>
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<tr><td width="50%">See <a href="Python-Auto_002dloading.html#show-auto_002dload-python_002dscripts">show auto-load python-scripts</a>.</td><td width="50%">Show setting of <small>GDB</small> Python scripts.</td></tr>
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<tr><td width="50%">See <a href="Python-Auto_002dloading.html#info-auto_002dload-python_002dscripts">info auto-load python-scripts</a>.</td><td width="50%">Show state of <small>GDB</small> Python scripts.</td></tr>
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<tr><td width="50%">See <a href="Guile-Auto_002dloading.html#set-auto_002dload-guile_002dscripts">set auto-load guile-scripts</a>.</td><td width="50%">Control for <small>GDB</small> Guile scripts.</td></tr>
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<tr><td width="50%">See <a href="Guile-Auto_002dloading.html#show-auto_002dload-guile_002dscripts">show auto-load guile-scripts</a>.</td><td width="50%">Show setting of <small>GDB</small> Guile scripts.</td></tr>
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<tr><td width="50%">See <a href="Guile-Auto_002dloading.html#info-auto_002dload-guile_002dscripts">info auto-load guile-scripts</a>.</td><td width="50%">Show state of <small>GDB</small> Guile scripts.</td></tr>
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<tr><td width="50%">See <a href="objfile_002dgdbdotext-file.html#set-auto_002dload-scripts_002ddirectory">set auto-load scripts-directory</a>.</td><td width="50%">Control for <small>GDB</small> auto-loaded scripts location.</td></tr>
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<tr><td width="50%">See <a href="objfile_002dgdbdotext-file.html#show-auto_002dload-scripts_002ddirectory">show auto-load scripts-directory</a>.</td><td width="50%">Show <small>GDB</small> auto-loaded scripts location.</td></tr>
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<tr><td width="50%">See <a href="objfile_002dgdbdotext-file.html#add_002dauto_002dload_002dscripts_002ddirectory">add-auto-load-scripts-directory</a>.</td><td width="50%">Add directory for auto-loaded scripts location list.</td></tr>
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<tr><td width="50%">See <a href="Init-File-in-the-Current-Directory.html#set-auto_002dload-local_002dgdbinit">set auto-load local-gdbinit</a>.</td><td width="50%">Control for init file in the current directory.</td></tr>
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<tr><td width="50%">See <a href="Init-File-in-the-Current-Directory.html#show-auto_002dload-local_002dgdbinit">show auto-load local-gdbinit</a>.</td><td width="50%">Show setting of init file in the current directory.</td></tr>
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<tr><td width="50%">See <a href="Init-File-in-the-Current-Directory.html#info-auto_002dload-local_002dgdbinit">info auto-load local-gdbinit</a>.</td><td width="50%">Show state of init file in the current directory.</td></tr>
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<tr><td width="50%">See <a href="libthread_005fdb_002eso_002e1-file.html#set-auto_002dload-libthread_002ddb">set auto-load libthread-db</a>.</td><td width="50%">Control for thread debugging library.</td></tr>
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<tr><td width="50%">See <a href="libthread_005fdb_002eso_002e1-file.html#show-auto_002dload-libthread_002ddb">show auto-load libthread-db</a>.</td><td width="50%">Show setting of thread debugging library.</td></tr>
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<tr><td width="50%">See <a href="libthread_005fdb_002eso_002e1-file.html#info-auto_002dload-libthread_002ddb">info auto-load libthread-db</a>.</td><td width="50%">Show state of thread debugging library.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-safe-path.html#set-auto_002dload-safe_002dpath">set auto-load safe-path</a>.</td><td width="50%">Control directories trusted for automatic loading.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-safe-path.html#show-auto_002dload-safe_002dpath">show auto-load safe-path</a>.</td><td width="50%">Show directories trusted for automatic loading.</td></tr>
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<tr><td width="50%">See <a href="Auto_002dloading-safe-path.html#add_002dauto_002dload_002dsafe_002dpath">add-auto-load-safe-path</a>.</td><td width="50%">Add directory trusted for automatic loading.</td></tr>
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</table>
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