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<A HREF="/software/hurd/whatsnew.html"><STRONG>What's New</STRONG></A><BR>
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<A HREF="/software/hurd/changelogs.html">ChangeLogs</A><BR>
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<A HREF="/software/hurd/hurd.html"><STRONG>GNU Hurd</STRONG></A><BR>
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<H3>What is the GNU Hurd?</H3>
<P>
The GNU Hurd is the GNU project's replacement for the Unix kernel.
The Hurd is a collection of servers that run on the Mach microkernel
to implement file systems, network protocols, file access control, and
other features that are implemented by the Unix kernel or similar
kernels (such as Linux).
<P>
If you have any news related to the Hurd project, feel free to send a
news entry to <A HREF="mailto:web-hurd@gnu.org">web-hurd@gnu.org</A>
so that it can be added here.
<HR>
<H3>What's new?</H3>
<P>
<DL>
<!-- News entries start here -->
<dt>14 January 2007</dt>
<dd>
<p>Neal Walfield and Marcus Brinkmann have written and submitted for
publication <a
href="http://lists.gnu.org/archive/html/bug-hurd/2007-01/msg00046.html"><em>A
Critique of the GNU Hurd Multi-server Operating System</em></a> and a <a
href="http://lists.gnu.org/archive/html/l4-hurd/2007-01/msg00007.html">position
paper <em>Improving Usability via Access Decomposition and Policy
Refinement</em></a>. Please follow the two preceding links to see the complete
announcements. The authors welcome comments and discussion which may be
directed to the <a href="mailto:bug-hurd@gnu.org"><bug-hurd@gnu.org>
mailing list</a> for the Critique and to the <a
href="mailto:l4-hurd@gnu.org"><l4-hurd@gnu.org> mailing list</a> for the
position paper.
<p>The abstract of the Critique: <blockquote><p>The GNU Hurd's design was
motivated by a desire to rectify a number of observed shortcomings in Unix.
Foremost among these is that many policies that limit users exist simply as
remnants of the design of the system's mechanisms and their implementation. To
increase extensibility and integration, the Hurd adopts an object-based
architecture and defines interfaces, which, in particular those for the
composition of and access to name spaces, are virtualizable.
<p>This paper is first a presentation of the Hurd's design goals and a
characterization of its architecture primarily as it represents a departure
from Unix's. We then critique the architecture and assess it in terms of the
user environment of today focusing on security. Then follows an evaluation of
Mach, the microkernel on which the Hurd is built, emphasizing the design
constraints which Mach imposes as well as a number of deficiencies its design
presents for multi-server like systems. Finally, we reflect on the properties
such a system appears to require.</blockquote>
<p>The abstract of the position paper: <blockquote><p>Commodity operating
systems fail to meet the security, resource management and integration
expectations of users. We propose a unified solution based on a capability
framework as it supports fine grained objects, straightforward access
propagation and virtualizable interfaces and explore how to improve resource
use via access decomposition and policy refinement with minimum interposition.
We argue that only a small static number of scheduling policies are needed in
practice and advocate hierarchical policy specification and central
realization.</blockquote></dd>
<dt>7 January 2007</dt>
<dd>
<p>A number of GNU Hurd developers will again (as already in the previous
years) meet at the time of the FOSDEM 2007, which will take place from
2007-02-24 to 25 in Brussels, Belgium. <a
href="http://hurd.gnufans.org/bin/view/Hug/FOSDEM2007">This wiki page</a> has
some details. <a href="/software/hurd/help.html">Contact us</a> if you are
interested in meeting with us.</dd>
<dt>27 April 2006</dt>
<dd>
<p>The GNU Hurd project will participate in this year's
<strong>Google Summer of Code</strong>, under the aegis of the GNU project.</p>
<p>The following is a list of items you might want to work on. If you want to
modify or extend these tasks or have your own ideas what to work on, please
feel invited to contact us on the <a
href="/software/hurd/help.html#TOCmail">bug-hurd mailing list</a> or the <a
href="/software/hurd/help.html#TOCirc">#hurd IRC channel</a>.</p>
<ul>
<li>Make GNU Mach use more <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5488">up to date
<em>device drivers</em></a>.</li>
<li>Work on <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5489">GNU Mach's
<em>IPC / VM system</em></a>.</li>
<li>Design and implement a <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5485"><em>sound
system</em></a>.</li>
<li>Transition the Hurd libraries and servers <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5487">from
<em>cthreads</em> to <em>pthreads</em></a>.</li>
<li>Find and implement a reasonable way to make the Hurd servers use <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5490">
<em>syslog</em></a>.</li>
<li>Design and implement <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=1619">
<em>libchannel</em></a>, a library for streams.</li>
<li>Rewrite <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5469">
<em>pfinet</em></a>, our interface to the IPv4 world.</li>
<li>Implement and make the Hurd properly use <a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5503">
<em>extended attributes</em></a>.</li>
<li>Design / implement / enhance support for the...
<ul>
<li><a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5486"><em>Andrew
File System (AFS)</em></a>;</li>
<li><a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5497"><em>NFS
client</em> and <em>NFSd</em></a>;</li>
<li><a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5498"><em>EXT3
file system</em></a>;</li>
<li><a
href="http://savannah.gnu.org/task/?func=detailitem&item_id=5499"><em>Logical
Volume Manager (LVM)</em></a>.</li>
</ul>
</ul>
<p>Please see the page
<a href="/software/soc-projects/guidelines.html">GNU guidelines for Summer of
Code projects</a> about how to make an application and
<a href="/software/soc-projects/ideas.html">Summer of Code project ideas
list</a> for a list of tasks for various GNU projects and information about
about how to submit your own ideas for tasks.</p>
</dd>
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send other questions to
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