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/contrib/cvs/COPYING

https://bitbucket.org/freebsd/freebsd-head/
License | 251 lines | 206 code | 45 blank | 0 comment | 0 complexity | 4e7cf92dacd3fb97d3250ec8cdc10cd2 MD5 | raw file
  1[I have snipped the snail mail address of the FSF because it has
  2changed in the past and is likely to change again.  The current
  3address should be at http://www.gnu.org/]
  4
  5		    GNU GENERAL PUBLIC LICENSE
  6		     Version 1, February 1989
  7
  8 Copyright (C) 1989 Free Software Foundation, Inc.
  9 Everyone is permitted to copy and distribute verbatim copies
 10 of this license document, but changing it is not allowed.
 11
 12			    Preamble
 13
 14  The license agreements of most software companies try to keep users
 15at the mercy of those companies.  By contrast, our General Public
 16License is intended to guarantee your freedom to share and change free
 17software--to make sure the software is free for all its users.  The
 18General Public License applies to the Free Software Foundation's
 19software and to any other program whose authors commit to using it.
 20You can use it for your programs, too.
 21
 22  When we speak of free software, we are referring to freedom, not
 23price.  Specifically, the General Public License is designed to make
 24sure that you have the freedom to give away or sell copies of free
 25software, that you receive source code or can get it if you want it,
 26that you can change the software or use pieces of it in new free
 27programs; and that you know you can do these things.
 28
 29  To protect your rights, we need to make restrictions that forbid
 30anyone to deny you these rights or to ask you to surrender the rights.
 31These restrictions translate to certain responsibilities for you if you
 32distribute copies of the software, or if you modify it.
 33
 34  For example, if you distribute copies of a such a program, whether
 35gratis or for a fee, you must give the recipients all the rights that
 36you have.  You must make sure that they, too, receive or can get the
 37source code.  And you must tell them their rights.
 38
 39  We protect your rights with two steps: (1) copyright the software, and
 40(2) offer you this license which gives you legal permission to copy,
 41distribute and/or modify the software.
 42
 43  Also, for each author's protection and ours, we want to make certain
 44that everyone understands that there is no warranty for this free
 45software.  If the software is modified by someone else and passed on, we
 46want its recipients to know that what they have is not the original, so
 47that any problems introduced by others will not reflect on the original
 48authors' reputations.
 49
 50  The precise terms and conditions for copying, distribution and
 51modification follow.
 52
 53		    GNU GENERAL PUBLIC LICENSE
 54   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 55
 56  0. This License Agreement applies to any program or other work which
 57contains a notice placed by the copyright holder saying it may be
 58distributed under the terms of this General Public License.  The
 59"Program", below, refers to any such program or work, and a "work based
 60on the Program" means either the Program or any work containing the
 61Program or a portion of it, either verbatim or with modifications.  Each
 62licensee is addressed as "you".
 63
 64  1. You may copy and distribute verbatim copies of the Program's source
 65code as you receive it, in any medium, provided that you conspicuously and
 66appropriately publish on each copy an appropriate copyright notice and
 67disclaimer of warranty; keep intact all the notices that refer to this
 68General Public License and to the absence of any warranty; and give any
 69other recipients of the Program a copy of this General Public License
 70along with the Program.  You may charge a fee for the physical act of
 71transferring a copy.
 72
 73  2. You may modify your copy or copies of the Program or any portion of
 74it, and copy and distribute such modifications under the terms of Paragraph
 751 above, provided that you also do the following:
 76
 77    a) cause the modified files to carry prominent notices stating that
 78    you changed the files and the date of any change; and
 79
 80    b) cause the whole of any work that you distribute or publish, that
 81    in whole or in part contains the Program or any part thereof, either
 82    with or without modifications, to be licensed at no charge to all
 83    third parties under the terms of this General Public License (except
 84    that you may choose to grant warranty protection to some or all
 85    third parties, at your option).
 86
 87    c) If the modified program normally reads commands interactively when
 88    run, you must cause it, when started running for such interactive use
 89    in the simplest and most usual way, to print or display an
 90    announcement including an appropriate copyright notice and a notice
 91    that there is no warranty (or else, saying that you provide a
 92    warranty) and that users may redistribute the program under these
 93    conditions, and telling the user how to view a copy of this General
 94    Public License.
 95
 96    d) You may charge a fee for the physical act of transferring a
 97    copy, and you may at your option offer warranty protection in
 98    exchange for a fee.
 99
100Mere aggregation of another independent work with the Program (or its
101derivative) on a volume of a storage or distribution medium does not bring
102the other work under the scope of these terms.
103
104  3. You may copy and distribute the Program (or a portion or derivative of
105it, under Paragraph 2) in object code or executable form under the terms of
106Paragraphs 1 and 2 above provided that you also do one of the following:
107
108    a) accompany it with the complete corresponding machine-readable
109    source code, which must be distributed under the terms of
110    Paragraphs 1 and 2 above; or,
111
112    b) accompany it with a written offer, valid for at least three
113    years, to give any third party free (except for a nominal charge
114    for the cost of distribution) a complete machine-readable copy of the
115    corresponding source code, to be distributed under the terms of
116    Paragraphs 1 and 2 above; or,
117
118    c) accompany it with the information you received as to where the
119    corresponding source code may be obtained.  (This alternative is
120    allowed only for noncommercial distribution and only if you
121    received the program in object code or executable form alone.)
122
123Source code for a work means the preferred form of the work for making
124modifications to it.  For an executable file, complete source code means
125all the source code for all modules it contains; but, as a special
126exception, it need not include source code for modules which are standard
127libraries that accompany the operating system on which the executable
128file runs, or for standard header files or definitions files that
129accompany that operating system.
130
131  4. You may not copy, modify, sublicense, distribute or transfer the
132Program except as expressly provided under this General Public License.
133Any attempt otherwise to copy, modify, sublicense, distribute or transfer
134the Program is void, and will automatically terminate your rights to use
135the Program under this License.  However, parties who have received
136copies, or rights to use copies, from you under this General Public
137License will not have their licenses terminated so long as such parties
138remain in full compliance.
139
140  5. By copying, distributing or modifying the Program (or any work based
141on the Program) you indicate your acceptance of this license to do so,
142and all its terms and conditions.
143
144  6. Each time you redistribute the Program (or any work based on the
145Program), the recipient automatically receives a license from the original
146licensor to copy, distribute or modify the Program subject to these
147terms and conditions.  You may not impose any further restrictions on the
148recipients' exercise of the rights granted herein.
149
150  7. The Free Software Foundation may publish revised and/or new versions
151of the General Public License from time to time.  Such new versions will
152be similar in spirit to the present version, but may differ in detail to
153address new problems or concerns.
154
155Each version is given a distinguishing version number.  If the Program
156specifies a version number of the license which applies to it and "any
157later version", you have the option of following the terms and conditions
158either of that version or of any later version published by the Free
159Software Foundation.  If the Program does not specify a version number of
160the license, you may choose any version ever published by the Free Software
161Foundation.
162
163  8. If you wish to incorporate parts of the Program into other free
164programs whose distribution conditions are different, write to the author
165to ask for permission.  For software which is copyrighted by the Free
166Software Foundation, write to the Free Software Foundation; we sometimes
167make exceptions for this.  Our decision will be guided by the two goals
168of preserving the free status of all derivatives of our free software and
169of promoting the sharing and reuse of software generally.
170
171			    NO WARRANTY
172
173  9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
174FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
175OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
176PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
177OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
178MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
179TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
180PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
181REPAIR OR CORRECTION.
182
183  10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
184WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
185REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
186INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
187OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
188TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
189YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
190PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
191POSSIBILITY OF SUCH DAMAGES.
192
193		     END OF TERMS AND CONDITIONS
194
195	Appendix: How to Apply These Terms to Your New Programs
196
197  If you develop a new program, and you want it to be of the greatest
198possible use to humanity, the best way to achieve this is to make it
199free software which everyone can redistribute and change under these
200terms.
201
202  To do so, attach the following notices to the program.  It is safest to
203attach them to the start of each source file to most effectively convey
204the exclusion of warranty; and each file should have at least the
205"copyright" line and a pointer to where the full notice is found.
206
207    <one line to give the program's name and a brief idea of what it does.>
208    Copyright (C) 19yy  <name of author>
209
210    This program is free software; you can redistribute it and/or modify
211    it under the terms of the GNU General Public License as published by
212    the Free Software Foundation; either version 1, or (at your option)
213    any later version.
214
215    This program is distributed in the hope that it will be useful,
216    but WITHOUT ANY WARRANTY; without even the implied warranty of
217    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
218    GNU General Public License for more details.
219
220    You should have received a copy of the GNU General Public License
221    along with this program; if not, write to the Free Software
222    Foundation, Inc.
223
224Also add information on how to contact you by electronic and paper mail.
225
226If the program is interactive, make it output a short notice like this
227when it starts in an interactive mode:
228
229    Gnomovision version 69, Copyright (C) 19xx name of author
230    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
231    This is free software, and you are welcome to redistribute it
232    under certain conditions; type `show c' for details.
233
234The hypothetical commands `show w' and `show c' should show the
235appropriate parts of the General Public License.  Of course, the
236commands you use may be called something other than `show w' and `show
237c'; they could even be mouse-clicks or menu items--whatever suits your
238program.
239
240You should also get your employer (if you work as a programmer) or your
241school, if any, to sign a "copyright disclaimer" for the program, if
242necessary.  Here a sample; alter the names:
243
244  Yoyodyne, Inc., hereby disclaims all copyright interest in the
245  program `Gnomovision' (a program to direct compilers to make passes
246  at assemblers) written by James Hacker.
247
248  <signature of Ty Coon>, 1 April 1989
249  Ty Coon, President of Vice
250
251That's all there is to it!