Support - Open Source Credits
Some of the CalDigit software include several open source packages under several different open source licenses as described below.
All of the source for these included open source packages may be found here:
CalDigit USB3 3.0 and xHCI host controller driver
This driver uses, modifies and combines both Apple's IOUSBFamily and Linux xHCI driver as described in the following:
Apple IOUSBFamily - The CalDigit xHCI driver includes and uses the functionality of IOUSBFamily Copyright © 2000 - 2010 Apple, Inc.
IOUSBFamily is used under the terms of the APPLE PUBLIC SOURCE LICENSE Version 2.0 (as included in Exhibit A).
Linux xHCI Driver - The CalDigit xHCI driver reuses and modifies the source codes of Linux USB 3.0 and xHCI host controller driver created by Sarah Sharp, Intel Corporation.
Linux xHCI Driver is used under the terms of the GNU GENERAL PUBLIC SOURCE LICENSE Version 2.0 (as included in Exhibit B).
EXHIBIT A: APPLE PUBLIC SOURCE LICENSE Version 2.0
APPLE PUBLIC SOURCE LICENSE
Version 2.0 - August 6, 2003
Please read this License carefully before downloading this software.
By downloading or using this software, you are agreeing to be bound by
the terms of this License. If you do not or cannot agree to the terms
of this License, please do not download or use the software.
1. General; Definitions. This License applies to any program or other
work which Apple Computer, Inc. ("Apple") makes publicly available and
which contains a notice placed by Apple identifying such program or
work as "Original Code" and stating that it is subject to the terms of
this Apple Public Source License version 2.0 ("License"). As used in
1.1 "Applicable Patent Rights" mean: (a) in the case where Apple is
the grantor of rights, (i) claims of patents that are now or hereafter
acquired, owned by or assigned to Apple and (ii) that cover subject
matter contained in the Original Code, but only to the extent
necessary to use, reproduce and/or distribute the Original Code
without infringement; and (b) in the case where You are the grantor of
rights, (i) claims of patents that are now or hereafter acquired,
owned by or assigned to You and (ii) that cover subject matter in Your
Modifications, taken alone or in combination with Original Code.
1.2 "Contributor" means any person or entity that creates or
contributes to the creation of Modifications.
1.3 "Covered Code" means the Original Code, Modifications, the
combination of Original Code and any Modifications, and/or any
respective portions thereof.
1.4 "Externally Deploy" means: (a) to sublicense, distribute or
otherwise make Covered Code available, directly or indirectly, to
anyone other than You; and/or (b) to use Covered Code, alone or as
part of a Larger Work, in any way to provide a service, including but
not limited to delivery of content, through electronic communication
with a client other than You.
1.5 "Larger Work" means a work which combines Covered Code or portions
thereof with code not governed by the terms of this License.
1.6 "Modifications" mean any addition to, deletion from, and/or change
to, the substance and/or structure of the Original Code, any previous
Modifications, the combination of Original Code and any previous
Modifications, and/or any respective portions thereof. When code is
released as a series of files, a Modification is: (a) any addition to
or deletion from the contents of a file containing Covered Code;
and/or (b) any new file or other representation of computer program
statements that contains any part of Covered Code.
1.7 "Original Code" means (a) the Source Code of a program or other
work as originally made available by Apple under this License,
including the Source Code of any updates or upgrades to such programs
or works made available by Apple under this License, and that has been
expressly identified by Apple as such in the header file(s) of such
work; and (b) the object code compiled from such Source Code and
originally made available by Apple under this License.
1.8 "Source Code" means the human readable form of a program or other
work that is suitable for making modifications to it, including all
modules it contains, plus any associated interface definition files,
scripts used to control compilation and installation of an executable
1.9 "You" or "Your" means an individual or a legal entity exercising
rights under this License. For legal entities, "You" or "Your"
includes any entity which controls, is controlled by, or is under
common control with, You, where "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of fifty percent
(50%) or more of the outstanding shares or beneficial ownership of
2. Permitted Uses; Conditions & Restrictions. Subject to the terms
and conditions of this License, Apple hereby grants You, effective on
the date You accept this License and download the Original Code, a
world-wide, royalty-free, non-exclusive license, to the extent of
Apple's Applicable Patent Rights and copyrights covering the Original
Code, to do the following:
2.1 Unmodified Code. You may use, reproduce, display, perform,
internally distribute within Your organization, and Externally Deploy
verbatim, unmodified copies of the Original Code, for commercial or
non-commercial purposes, provided that in each instance:
(a) You must retain and reproduce in all copies of Original Code the
copyright and other proprietary notices and disclaimers of Apple as
they appear in the Original Code, and keep intact all notices in the
Original Code that refer to this License; and
(b) You must include a copy of this License with every copy of Source
Code of Covered Code and documentation You distribute or Externally
Deploy, and You may not offer or impose any terms on such Source Code
that alter or restrict this License or the recipients' rights
hereunder, except as permitted under Section 6.
2.2 Modified Code. You may modify Covered Code and use, reproduce,
display, perform, internally distribute within Your organization, and
Externally Deploy Your Modifications and Covered Code, for commercial
or non-commercial purposes, provided that in each instance You also
meet all of these conditions:
(a) You must satisfy all the conditions of Section 2.1 with respect to
the Source Code of the Covered Code;
(b) You must duplicate, to the extent it does not already exist, the
notice in Exhibit A in each file of the Source Code of all Your
Modifications, and cause the modified files to carry prominent notices
stating that You changed the files and the date of any change; and
(c) If You Externally Deploy Your Modifications, You must make
Source Code of all Your Externally Deployed Modifications either
available to those to whom You have Externally Deployed Your
Modifications, or publicly available. Source Code of Your Externally
Deployed Modifications must be released under the terms set forth in
this License, including the license grants set forth in Section 3
below, for as long as you Externally Deploy the Covered Code or twelve
(12) months from the date of initial External Deployment, whichever is
longer. You should preferably distribute the Source Code of Your
Externally Deployed Modifications electronically (e.g. download from a
2.3 Distribution of Executable Versions. In addition, if You
Externally Deploy Covered Code (Original Code and/or Modifications) in
object code, executable form only, You must include a prominent
notice, in the code itself as well as in related documentation,
stating that Source Code of the Covered Code is available under the
terms of this License with information on how and where to obtain such
2.4 Third Party Rights. You expressly acknowledge and agree that
although Apple and each Contributor grants the licenses to their
respective portions of the Covered Code set forth herein, no
assurances are provided by Apple or any Contributor that the Covered
Code does not infringe the patent or other intellectual property
rights of any other entity. Apple and each Contributor disclaim any
liability to You for claims brought by any other entity based on
infringement of intellectual property rights or otherwise. As a
condition to exercising the rights and licenses granted hereunder, You
hereby assume sole responsibility to secure any other intellectual
property rights needed, if any. For example, if a third party patent
license is required to allow You to distribute the Covered Code, it is
Your responsibility to acquire that license before distributing the
3. Your Grants. In consideration of, and as a condition to, the
licenses granted to You under this License, You hereby grant to any
person or entity receiving or distributing Covered Code under this
License a non-exclusive, royalty-free, perpetual, irrevocable license,
under Your Applicable Patent Rights and other intellectual property
rights (other than patent) owned or controlled by You, to use,
reproduce, display, perform, modify, sublicense, distribute and
Externally Deploy Your Modifications of the same scope and extent as
Apple's licenses under Sections 2.1 and 2.2 above.
4. Larger Works. You may create a Larger Work by combining Covered
Code with other code not governed by the terms of this License and
distribute the Larger Work as a single product. In each such instance,
You must make sure the requirements of this License are fulfilled for
the Covered Code or any portion thereof.
5. Limitations on Patent License. Except as expressly stated in
Section 2, no other patent rights, express or implied, are granted by
Apple herein. Modifications and/or Larger Works may require additional
patent licenses from Apple which Apple may grant in its sole
6. Additional Terms. You may choose to offer, and to charge a fee for,
warranty, support, indemnity or liability obligations and/or other
rights consistent with the scope of the license granted herein
("Additional Terms") to one or more recipients of Covered Code.
However, You may do so only on Your own behalf and as Your sole
responsibility, and not on behalf of Apple or any Contributor. You
must obtain the recipient's agreement that any such Additional Terms
are offered by You alone, and You hereby agree to indemnify, defend
and hold Apple and every Contributor harmless for any liability
incurred by or claims asserted against Apple or such Contributor by
reason of any such Additional Terms.
7. Versions of the License. Apple may publish revised and/or new
versions of this License from time to time. Each version will be given
a distinguishing version number. Once Original Code has been published
under a particular version of this License, You may continue to use it
under the terms of that version. You may also choose to use such
Original Code under the terms of any subsequent version of this
License published by Apple. No one other than Apple has the right to
modify the terms applicable to Covered Code created under this
8. NO WARRANTY OR SUPPORT. The Covered Code may contain in whole or in
part pre-release, untested, or not fully tested works. The Covered
Code may contain errors that could cause failures or loss of data, and
may be incomplete or contain inaccuracies. You expressly acknowledge
and agree that use of the Covered Code, or any portion thereof, is at
Your sole and entire risk. THE COVERED CODE IS PROVIDED "AS IS" AND
WITHOUT WARRANTY, UPGRADES OR SUPPORT OF ANY KIND AND APPLE AND
APPLE'S LICENSOR(S) (COLLECTIVELY REFERRED TO AS "APPLE" FOR THE
PURPOSES OF SECTIONS 8 AND 9) AND ALL CONTRIBUTORS EXPRESSLY DISCLAIM
ALL WARRANTIES AND/OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES AND/OR CONDITIONS OF
MERCHANTABILITY, OF SATISFACTORY QUALITY, OF FITNESS FOR A PARTICULAR
PURPOSE, OF ACCURACY, OF QUIET ENJOYMENT, AND NONINFRINGEMENT OF THIRD
PARTY RIGHTS. APPLE AND EACH CONTRIBUTOR DOES NOT WARRANT AGAINST
INTERFERENCE WITH YOUR ENJOYMENT OF THE COVERED CODE, THAT THE
FUNCTIONS CONTAINED IN THE COVERED CODE WILL MEET YOUR REQUIREMENTS,
THAT THE OPERATION OF THE COVERED CODE WILL BE UNINTERRUPTED OR
ERROR-FREE, OR THAT DEFECTS IN THE COVERED CODE WILL BE CORRECTED. NO
ORAL OR WRITTEN INFORMATION OR ADVICE GIVEN BY APPLE, AN APPLE
AUTHORIZED REPRESENTATIVE OR ANY CONTRIBUTOR SHALL CREATE A WARRANTY.
You acknowledge that the Covered Code is not intended for use in the
operation of nuclear facilities, aircraft navigation, communication
systems, or air traffic control machines in which case the failure of
the Covered Code could lead to death, personal injury, or severe
physical or environmental damage.
9. LIMITATION OF LIABILITY. TO THE EXTENT NOT PROHIBITED BY LAW, IN NO
EVENT SHALL APPLE OR ANY CONTRIBUTOR BE LIABLE FOR ANY INCIDENTAL,
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATING
TO THIS LICENSE OR YOUR USE OR INABILITY TO USE THE COVERED CODE, OR
ANY PORTION THEREOF, WHETHER UNDER A THEORY OF CONTRACT, WARRANTY,
TORT (INCLUDING NEGLIGENCE), PRODUCTS LIABILITY OR OTHERWISE, EVEN IF
APPLE OR SUCH CONTRIBUTOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES AND NOTWITHSTANDING THE FAILURE OF ESSENTIAL PURPOSE OF ANY
REMEDY. SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF LIABILITY OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS LIMITATION MAY NOT APPLY
TO YOU. In no event shall Apple's total liability to You for all
damages (other than as may be required by applicable law) under this
License exceed the amount of fifty dollars ($50.00).
10. Trademarks. This License does not grant any rights to use the
trademarks or trade names "Apple", "Apple Computer", "Mac", "Mac OS",
"QuickTime", "QuickTime Streaming Server" or any other trademarks,
service marks, logos or trade names belonging to Apple (collectively
"Apple Marks") or to any trademark, service mark, logo or trade name
belonging to any Contributor. You agree not to use any Apple Marks in
or as part of the name of products derived from the Original Code or
to endorse or promote products derived from the Original Code other
than as expressly permitted by and in strict compliance at all times
with Apple's third party trademark usage guidelines which are posted
11. Ownership. Subject to the licenses granted under this License,
each Contributor retains all rights, title and interest in and to any
Modifications made by such Contributor. Apple retains all rights,
title and interest in and to the Original Code and any Modifications
made by or on behalf of Apple ("Apple Modifications"), and such Apple
Modifications will not be automatically subject to this License. Apple
may, at its sole discretion, choose to license such Apple
Modifications under this License, or on different terms from those
contained in this License or may choose not to license them at all.
12.1 Termination. This License and the rights granted hereunder will
(a) automatically without notice from Apple if You fail to comply with
any term(s) of this License and fail to cure such breach within 30
days of becoming aware of such breach;
(b) immediately in the event of the circumstances described in Section
(c) automatically without notice from Apple if You, at any time during
the term of this License, commence an action for patent infringement
against Apple; provided that Apple did not first commence
an action for patent infringement against You in that instance.
12.2 Effect of Termination. Upon termination, You agree to immediately
stop any further use, reproduction, modification, sublicensing and
distribution of the Covered Code. All sublicenses to the Covered Code
which have been properly granted prior to termination shall survive
any termination of this License. Provisions which, by their nature,
should remain in effect beyond the termination of this License shall
survive, including but not limited to Sections 3, 5, 8, 9, 10, 11,
12.2 and 13. No party will be liable to any other for compensation,
indemnity or damages of any sort solely as a result of terminating
this License in accordance with its terms, and termination of this
License will be without prejudice to any other right or remedy of
13.1 Government End Users. The Covered Code is a "commercial item" as
defined in FAR 2.101. Government software and technical data rights in
the Covered Code include only those rights customarily provided to the
public as defined in this License. This customary commercial license
in technical data and software is provided in accordance with FAR
12.211 (Technical Data) and 12.212 (Computer Software) and, for
Department of Defense purchases, DFAR 252.227-7015 (Technical Data --
Commercial Items) and 227.7202-3 (Rights in Commercial Computer
Software or Computer Software Documentation). Accordingly, all U.S.
Government End Users acquire Covered Code with only those rights set
13.2 Relationship of Parties. This License will not be construed as
creating an agency, partnership, joint venture or any other form of
legal association between or among You, Apple or any Contributor, and
You will not represent to the contrary, whether expressly, by
implication, appearance or otherwise.
13.3 Independent Development. Nothing in this License will impair
Apple's right to acquire, license, develop, have others develop for
it, market and/or distribute technology or products that perform the
same or similar functions as, or otherwise compete with,
Modifications, Larger Works, technology or products that You may
develop, produce, market or distribute.
13.4 Waiver; Construction. Failure by Apple or any Contributor to
enforce any provision of this License will not be deemed a waiver of
future enforcement of that or any other provision. Any law or
regulation which provides that the language of a contract shall be
construed against the drafter will not apply to this License.
13.5 Severability. (a) If for any reason a court of competent
jurisdiction finds any provision of this License, or portion thereof,
to be unenforceable, that provision of the License will be enforced to
the maximum extent permissible so as to effect the economic benefits
and intent of the parties, and the remainder of this License will
continue in full force and effect. (b) Notwithstanding the foregoing,
if applicable law prohibits or restricts You from fully and/or
specifically complying with Sections 2 and/or 3 or prevents the
enforceability of either of those Sections, this License will
immediately terminate and You must immediately discontinue any use of
the Covered Code and destroy all copies of it that are in your
possession or control.
13.6 Dispute Resolution. Any litigation or other dispute resolution
between You and Apple relating to this License shall take place in the
Northern District of California, and You and Apple hereby consent to
the personal jurisdiction of, and venue in, the state and federal
courts within that District with respect to this License. The
application of the United Nations Convention on Contracts for the
International Sale of Goods is expressly excluded.
13.7 Entire Agreement; Governing Law. This License constitutes the
entire agreement between the parties with respect to the subject
matter hereof. This License shall be governed by the laws of the
United States and the State of California, except that body of
California law concerning conflicts of law.
Where You are located in the province of Quebec, Canada, the following
clause applies: The parties hereby confirm that they have requested
that this License and all related documents be drafted in English. Les
parties ont exige que le present contrat et tous les documents
connexes soient rediges en anglais.
"Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights
This file contains Original Code and/or Modifications of Original Code
as defined in and that are subject to the Apple Public Source License
Version 2.0 (the 'License'). You may not use this file except in
compliance with the License. Please obtain a copy of the License at
http://www.opensource.apple.com/apsl/ and read it before using this
The Original Code and all software distributed under the License are
distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
Please see the License for the specific language governing rights and
limitations under the License."
EXHIBIT B: GNU GENERAL PUBLIC SOURCE LICENSE Version 2.0
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
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.
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.
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.
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
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.
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
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.
The precise terms and conditions for copying, distribution and
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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".
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.
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.
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.
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:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
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.
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.)
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.
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 right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.