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<p><tt class="chtitle1">闄勫綍C 鐗堟潈瀹ｅ憡</tt></p>
<p><tt class="chtitle2">C.1 The FreeBSD Copyright</tt></p>
<p>Copyright 1994-2002 FreeBSD, Inc. All rights reserved.</p>
<p>Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:</p>
<ol>
<li>Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.</li>
<li>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.</li>
</ol>
<p>THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT ``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 FREEBSD PROJECT 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.</p>
<p>The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the FreeBSD Project or FreeBSD, Inc.</p>
<p><tt class="chtitle2">C.2 The 4.4 BSD Copyright</tt></p>
<p>All of the documentation and software included in the 4.4BSD and 4.4BSD-Lite
Releases is copyrighted by The Regents of the University of California.</p>
<p>Copyright 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents
of the University of California. All rights reserved.</p>
<p>Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:</p>
<ol>
<li>Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.</li>
<li>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.</li>
<li>All advertising materials mentioning features or use of this software must
display the following acknowledgement: <br>
This product includes software developed by the University of California,
Berkeley and its contributors.</li>
<li>Neither the name of the University nor the names of its contributors may be
used to endorse or promote products derived from this software without specific
prior written permission.</li>
</ol>
<p>THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.</p>
<p>The Institute of Electrical and Electronics Engineers and the American National
Standards Committee X3, on Information Processing Systems have given us
permission to reprint portions of their documentation.</p>
<p>In the following statement, the phrase ``this text'' refers to portions of the
system documentation.</p>
<p>Portions of this text are reprinted and reproduced in electronic form in the
second BSD Networking Software Release, from IEEE Std 1003.1-1988, IEEE Standard
Portable Operating System Interface for Computer Environments (POSIX), copyright
C 1988 by the Institute of Electrical and Electronics Engineers, Inc. In the
event of any discrepancy between these versions and the original IEEE Standard,
the original IEEE Standard is the referee document.</p>
<p>In the following statement, the phrase ``This material'' refers to portions of
the system documentation.</p>
<p>This material is reproduced with permission from American National Standards
Committee X3, on Information Processing Systems. Computer and Business Equipment
Manufacturers Association (CBEMA), 311 First St., NW, Suite 500, Washington, DC
20001-2178. The developmental work of Programming Language C was completed by
the X3J11 Technical Committee.</p>
<p>The views and conclusions contained in the software and documentation are those
of the authors and should not be interpreted as representing official policies,
either expressed or implied, of the Regents of the University of California.</p>
<p><tt class="chtitle2">C.3 GNU GENERAL PUBLIC LICENSE</tt></p>
<p align="center">Version 2, June 1991</p>
<p align="center">Copyright (C) 1989, 1991 Free Software Foundation, Inc.<br>
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA</p>
<p align="center">Everyone is permitted to copy and distribute verbatim copies<br>
of this license document, but changing it is not allowed.</p>
<p align="center"><b>Preamble</b></p>
<p>The licenses for most software are designed to take away your freedom to share
and change it. By contrast, the GNU General Public License is intended to
guarantee your freedom to share and change free software--to make sure the
software is free for all its users. This General Public License applies to most
of the Free Software Foundation's software and to any other program whose
authors commit to using it. (Some other Free Software Foundation software is
covered by the GNU Library General Public License instead.) You can apply it to
your programs, too.</p>
<p>When we speak of free software, we are referring to freedom, not price. Our
General Public Licenses are designed to make sure that you have the freedom to
distribute copies of free software (and charge for this service if you wish),
that you receive source code or can get it if you want it, that you can change
the software or use pieces of it in new free programs; and that you know you can
do these things.</p>
<p>To protect your rights, we need to make restrictions that forbid anyone to deny
you these rights or to ask you to surrender the rights. These restrictions
translate to certain responsibilities for you if you distribute copies of the
software, or if you modify it. </p>
<p>For example, if you distribute copies of such a program, whether gratis or for a
fee, you must give the recipients all the rights that you have. You must make
sure that they, too, receive or can get the source code. And you must show them
these terms so they know their rights. </p>
<p>We protect your rights with two steps: (1) copyright the software, and (2) offer
you this license which gives you legal permission to copy, distribute and/or
modify the software. </p>
<p>Also, for each author's protection and ours, we want to make certain that
everyone understands that there is no warranty for this free software. If the
software is modified by someone else and passed on, we want its recipients to
know that what they have is not the original, so that any problems introduced by
others will not reflect on the original authors' reputations. </p>
<p>Finally, any free program is threatened constantly by software patents. We wish
to avoid the danger that redistributors of a free program will individually
obtain patent licenses, in effect making the program proprietary. To prevent
this, we have made it clear that any patent must be licensed for everyone's free
use or not licensed at all.</p>
<p>The precise terms and conditions for copying, distribution and modification
follow. </p>
<p align="center"><b>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</b></p>
<p>0. This License applies to any program or other work which contains a notice
placed by the copyright holder saying it may be distributed under the terms of
this General Public License. The "Program", below, refers to any such program or
work, and a "work based on the Program" means either the Program or any
derivative work under copyright law: that is to say, a work containing the
Program or a portion of it, either verbatim or with modifications and/or
translated into another language. (Hereinafter, translation is included without
limitation in the term "modification".) Each licensee is addressed as "you".</p>
<p>Activities other than copying, distribution and modification are not covered by
this License; they are outside its scope. The act of running the Program is not
restricted, and the output from the Program is covered only if its contents
constitute a work based on the Program (independent of having been made by
running the Program). Whether that is true depends on what the Program does.</p>
<p>1. You may copy and distribute verbatim copies of the Program's source code as
you receive it, in any medium, provided that you conspicuously and appropriately
publish on each copy an appropriate copyright notice and disclaimer of warranty;
keep intact all the notices that refer to this License and to the absence of any
warranty; and give any other recipients of the Program a copy of this License
along with the Program. </p>
<p>You may charge a fee for the physical act of transferring a copy, and you may at
your option offer warranty protection in exchange for a fee. </p>
<p>2. You may modify your copy or copies of the Program or any portion of it, thus
forming a work based on the Program, and copy and distribute such modifications
or work under the terms of Section 1 above, provided that you also meet all of
these conditions: </p>
<p>a) You must cause the modified files to carry prominent notices stating that you
changed the files and the date of any change. </p>
<p>b) You must cause any work that you distribute or publish, that in whole or in
part contains or is derived from the Program or any part thereof, to be licensed
as a whole at no charge to all third parties under the terms of this License. </p>
<p>c) If the modified program normally reads commands interactively when run, you
must cause it, when started running for such interactive use in the most
ordinary way, to print or display an announcement including an appropriate
copyright notice and a notice that there is no warranty (or else, saying that
you provide a warranty) and that users may redistribute the program under these
conditions, and telling the user how to view a copy of this License. (Exception:
if the Program itself is interactive but does not normally print such an
announcement, your work based on the Program is not required to print an
announcement.) </p>
<p>These requirements apply to the modified work as a whole. If identifiable
sections of that work are not derived from the Program, and can be reasonably
considered independent and separate works in themselves, then this License, and
its terms, do not apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a whole which is a
work based on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the entire whole,
and thus to each and every part regardless of who wrote it. </p>
<p>Thus, it is not the intent of this section to claim rights or contest your
rights to work written entirely by you; rather, the intent is to exercise the
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