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<title>Backend-Specific Operations: GnomeVFS - Filesystem Abstraction library</title>
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<a href="#gnome-vfs-2.0-gnome-vfs-file-advanced-ops.description" class="shortcut">Description</a></span>
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<h2><span class="refentrytitle"><a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.top_of_page"></a>Backend-Specific Operations</span></h2>
<p>Backend-Specific Operations — Execute backend-specific operations</p>
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<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.functions"></a><h2>Functions</h2>
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<a class="link" href="gnome-vfs-2.0-gnome-vfs-result.html#GnomeVFSResult" title="enum GnomeVFSResult"><span class="returnvalue">GnomeVFSResult</span></a>
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<a class="link" href="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.html#gnome-vfs-file-control" title="gnome_vfs_file_control ()">gnome_vfs_file_control</a> <span class="c_punctuation">()</span>
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<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.description"></a><h2>Description</h2>
<p>
Advanced file operations allow you to execute backend-specific commands.
Currently, none of the <span class="type">GnomeVFSModules</span> shipped with GnomeVFS includes
useful operations, but they allow sophisticated module-specific code
that can not be added to GnomeVFS because it would break abstraction.
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<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.functions_details"></a><h2>Functions</h2>
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<a name="gnome-vfs-file-control"></a><h3>gnome_vfs_file_control ()</h3>
<pre class="programlisting"><a class="link" href="gnome-vfs-2.0-gnome-vfs-result.html#GnomeVFSResult" title="enum GnomeVFSResult"><span class="returnvalue">GnomeVFSResult</span></a>
gnome_vfs_file_control (<em class="parameter"><code><span class="type">GnomeVFSHandle</span> *handle</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *operation</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> operation_data</code></em>);</pre>
<p>Execute a backend dependent operation specified by the string <em class="parameter"><code>operation</code></em>
.
This is typically used for specialized vfs backends that need additional
operations that gnome-vfs doesn't have. Compare it to the unix call <code class="function">ioctl()</code>.
The format of <em class="parameter"><code>operation_data</code></em>
depends on the operation. Operation that are
backend specific are normally namespaced by their module name.</p>
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<a name="gnome-vfs-file-control.parameters"></a><h4>Parameters</h4>
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<td class="parameter_name"><p>handle</p></td>
<td class="parameter_description"><p>handle of the file to affect.</p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>operation</p></td>
<td class="parameter_description"><p>operation to execute.</p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>operation_data</p></td>
<td class="parameter_description"><p>data needed to execute the operation.</p></td>
<td class="parameter_annotations"> </td>
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<a name="gnome-vfs-file-control.returns"></a><h4>Returns</h4>
<p> an integer representing the success of the operation.</p>
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<a name="gnome-vfs-2.0-gnome-vfs-file-advanced-ops.other_details"></a><h2>Types and Values</h2>
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