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geom.page
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geom.page
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<!--
Copyright (c) 2006 Robert N. M. Watson
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
-->
<page role="geom">
<title>GEOM Storage Framework and GBDE Encrypted Storage</title>
<section>
<title>GEOM Storage Framework and GBDE Encrypted Storage</title>
<html>
<p>GEOM is a modular I/O request transformation framework allowing
kernel modules to attach to I/O devices providing a variety of layout
and data transformations. GEOM was created as part of the TrustedBSD
Project in order to support cryptographic disk services, such as
GBDE, on the FreeBSD platform. GBDE implements strong crypographic
protection of file systems at the GEOM layer.</p>
<p>GEOM has been present in FreeBSD since FreeBSD 5.0-RELEASE, with
increasing numbers of transform modules over time, including the
GELI encryption and integrity protection module.</p>
<p>GEOM and GBDE were implemented by Poul-Henning Kamp.</p>
</html>
</section>
</page>