tests: fix shellcheck warnings in plugins/sink.ctf.fs
[babeltrace.git] / LICENSES / GPL-2.0
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1Valid-License-Identifier: GPL-2.0-only
2Valid-License-Identifier: GPL-2.0-or-later
3SPDX-URL: https://spdx.org/licenses/GPL-2.0.html
4Usage-Guide:
5 To use this license in source code, put one of the following SPDX
6 tag/value pairs into a comment according to the placement
7 guidelines in the licensing rules documentation.
8 For 'GNU General Public License (GPL) version 2 only' use:
9 SPDX-License-Identifier: GPL-2.0-only
10 For 'GNU General Public License (GPL) version 2 or any later version' use:
11 SPDX-License-Identifier: GPL-2.0-or-later
12License-Text:
13
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14 GNU GENERAL PUBLIC LICENSE
15 Version 2, June 1991
16
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17 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
18 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Everyone is permitted to copy and distribute verbatim copies
20 of this license document, but changing it is not allowed.
21
22 Preamble
23
24 The licenses for most software are designed to take away your
25freedom to share and change it. By contrast, the GNU General Public
26License is intended to guarantee your freedom to share and change free
27software--to make sure the software is free for all its users. This
28General Public License applies to most of the Free Software
29Foundation's software and to any other program whose authors commit to
30using it. (Some other Free Software Foundation software is covered by
31the GNU Lesser General Public License instead.) You can apply it to
32your programs, too.
33
34 When we speak of free software, we are referring to freedom, not
35price. Our General Public Licenses are designed to make sure that you
36have the freedom to distribute copies of free software (and charge for
37this service if you wish), that you receive source code or can get it
38if you want it, that you can change the software or use pieces of it
39in new free programs; and that you know you can do these things.
40
41 To protect your rights, we need to make restrictions that forbid
42anyone to deny you these rights or to ask you to surrender the rights.
43These restrictions translate to certain responsibilities for you if you
44distribute copies of the software, or if you modify it.
45
46 For example, if you distribute copies of such a program, whether
47gratis or for a fee, you must give the recipients all the rights that
48you have. You must make sure that they, too, receive or can get the
49source code. And you must show them these terms so they know their
50rights.
51
52 We protect your rights with two steps: (1) copyright the software, and
53(2) offer you this license which gives you legal permission to copy,
54distribute and/or modify the software.
55
56 Also, for each author's protection and ours, we want to make certain
57that everyone understands that there is no warranty for this free
58software. If the software is modified by someone else and passed on, we
59want its recipients to know that what they have is not the original, so
60that any problems introduced by others will not reflect on the original
61authors' reputations.
62
63 Finally, any free program is threatened constantly by software
64patents. We wish to avoid the danger that redistributors of a free
65program will individually obtain patent licenses, in effect making the
66program proprietary. To prevent this, we have made it clear that any
67patent must be licensed for everyone's free use or not licensed at all.
68
69 The precise terms and conditions for copying, distribution and
70modification follow.
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72 GNU GENERAL PUBLIC LICENSE
73 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
74
75 0. This License applies to any program or other work which contains
76a notice placed by the copyright holder saying it may be distributed
77under the terms of this General Public License. The "Program", below,
78refers to any such program or work, and a "work based on the Program"
79means either the Program or any derivative work under copyright law:
80that is to say, a work containing the Program or a portion of it,
81either verbatim or with modifications and/or translated into another
82language. (Hereinafter, translation is included without limitation in
83the term "modification".) Each licensee is addressed as "you".
84
85Activities other than copying, distribution and modification are not
86covered by this License; they are outside its scope. The act of
87running the Program is not restricted, and the output from the Program
88is covered only if its contents constitute a work based on the
89Program (independent of having been made by running the Program).
90Whether that is true depends on what the Program does.
91
92 1. You may copy and distribute verbatim copies of the Program's
93source code as you receive it, in any medium, provided that you
94conspicuously and appropriately publish on each copy an appropriate
95copyright notice and disclaimer of warranty; keep intact all the
96notices that refer to this License and to the absence of any warranty;
97and give any other recipients of the Program a copy of this License
98along with the Program.
99
100You may charge a fee for the physical act of transferring a copy, and
101you may at your option offer warranty protection in exchange for a fee.
102
103 2. You may modify your copy or copies of the Program or any portion
104of it, thus forming a work based on the Program, and copy and
105distribute such modifications or work under the terms of Section 1
106above, provided that you also meet all of these conditions:
107
108 a) You must cause the modified files to carry prominent notices
109 stating that you changed the files and the date of any change.
110
111 b) You must cause any work that you distribute or publish, that in
112 whole or in part contains or is derived from the Program or any
113 part thereof, to be licensed as a whole at no charge to all third
114 parties under the terms of this License.
115
116 c) If the modified program normally reads commands interactively
117 when run, you must cause it, when started running for such
118 interactive use in the most ordinary way, to print or display an
119 announcement including an appropriate copyright notice and a
120 notice that there is no warranty (or else, saying that you provide
121 a warranty) and that users may redistribute the program under
122 these conditions, and telling the user how to view a copy of this
123 License. (Exception: if the Program itself is interactive but
124 does not normally print such an announcement, your work based on
125 the Program is not required to print an announcement.)
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127These requirements apply to the modified work as a whole. If
128identifiable sections of that work are not derived from the Program,
129and can be reasonably considered independent and separate works in
130themselves, then this License, and its terms, do not apply to those
131sections when you distribute them as separate works. But when you
132distribute the same sections as part of a whole which is a work based
133on the Program, the distribution of the whole must be on the terms of
134this License, whose permissions for other licensees extend to the
135entire whole, and thus to each and every part regardless of who wrote it.
136
137Thus, it is not the intent of this section to claim rights or contest
138your rights to work written entirely by you; rather, the intent is to
139exercise the right to control the distribution of derivative or
140collective works based on the Program.
141
142In addition, mere aggregation of another work not based on the Program
143with the Program (or with a work based on the Program) on a volume of
144a storage or distribution medium does not bring the other work under
145the scope of this License.
146
147 3. You may copy and distribute the Program (or a work based on it,
148under Section 2) in object code or executable form under the terms of
149Sections 1 and 2 above provided that you also do one of the following:
150
151 a) Accompany it with the complete corresponding machine-readable
152 source code, which must be distributed under the terms of Sections
153 1 and 2 above on a medium customarily used for software interchange; or,
154
155 b) Accompany it with a written offer, valid for at least three
156 years, to give any third party, for a charge no more than your
157 cost of physically performing source distribution, a complete
158 machine-readable copy of the corresponding source code, to be
159 distributed under the terms of Sections 1 and 2 above on a medium
160 customarily used for software interchange; or,
161
162 c) Accompany it with the information you received as to the offer
163 to distribute corresponding source code. (This alternative is
164 allowed only for noncommercial distribution and only if you
165 received the program in object code or executable form with such
166 an offer, in accord with Subsection b above.)
167
168The source code for a work means the preferred form of the work for
169making modifications to it. For an executable work, complete source
170code means all the source code for all modules it contains, plus any
171associated interface definition files, plus the scripts used to
172control compilation and installation of the executable. However, as a
173special exception, the source code distributed need not include
174anything that is normally distributed (in either source or binary
175form) with the major components (compiler, kernel, and so on) of the
176operating system on which the executable runs, unless that component
177itself accompanies the executable.
178
179If distribution of executable or object code is made by offering
180access to copy from a designated place, then offering equivalent
181access to copy the source code from the same place counts as
182distribution of the source code, even though third parties are not
183compelled to copy the source along with the object code.
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185 4. You may not copy, modify, sublicense, or distribute the Program
186except as expressly provided under this License. Any attempt
187otherwise to copy, modify, sublicense or distribute the Program is
188void, and will automatically terminate your rights under this License.
189However, parties who have received copies, or rights, from you under
190this License will not have their licenses terminated so long as such
191parties remain in full compliance.
192
193 5. You are not required to accept this License, since you have not
194signed it. However, nothing else grants you permission to modify or
195distribute the Program or its derivative works. These actions are
196prohibited by law if you do not accept this License. Therefore, by
197modifying or distributing the Program (or any work based on the
198Program), you indicate your acceptance of this License to do so, and
199all its terms and conditions for copying, distributing or modifying
200the Program or works based on it.
201
202 6. Each time you redistribute the Program (or any work based on the
203Program), the recipient automatically receives a license from the
204original licensor to copy, distribute or modify the Program subject to
205these terms and conditions. You may not impose any further
206restrictions on the recipients' exercise of the rights granted herein.
207You are not responsible for enforcing compliance by third parties to
208this License.
209
210 7. If, as a consequence of a court judgment or allegation of patent
211infringement or for any other reason (not limited to patent issues),
212conditions are imposed on you (whether by court order, agreement or
213otherwise) that contradict the conditions of this License, they do not
214excuse you from the conditions of this License. If you cannot
215distribute so as to satisfy simultaneously your obligations under this
216License and any other pertinent obligations, then as a consequence you
217may not distribute the Program at all. For example, if a patent
218license would not permit royalty-free redistribution of the Program by
219all those who receive copies directly or indirectly through you, then
220the only way you could satisfy both it and this License would be to
221refrain entirely from distribution of the Program.
222
223If any portion of this section is held invalid or unenforceable under
224any particular circumstance, the balance of the section is intended to
225apply and the section as a whole is intended to apply in other
226circumstances.
227
228It is not the purpose of this section to induce you to infringe any
229patents or other property right claims or to contest validity of any
230such claims; this section has the sole purpose of protecting the
231integrity of the free software distribution system, which is
232implemented by public license practices. Many people have made
233generous contributions to the wide range of software distributed
234through that system in reliance on consistent application of that
235system; it is up to the author/donor to decide if he or she is willing
236to distribute software through any other system and a licensee cannot
237impose that choice.
238
239This section is intended to make thoroughly clear what is believed to
240be a consequence of the rest of this License.
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242 8. If the distribution and/or use of the Program is restricted in
243certain countries either by patents or by copyrighted interfaces, the
244original copyright holder who places the Program under this License
245may add an explicit geographical distribution limitation excluding
246those countries, so that distribution is permitted only in or among
247countries not thus excluded. In such case, this License incorporates
248the limitation as if written in the body of this License.
249
250 9. The Free Software Foundation may publish revised and/or new versions
251of the General Public License from time to time. Such new versions will
252be similar in spirit to the present version, but may differ in detail to
253address new problems or concerns.
254
255Each version is given a distinguishing version number. If the Program
256specifies a version number of this License which applies to it and "any
257later version", you have the option of following the terms and conditions
258either of that version or of any later version published by the Free
259Software Foundation. If the Program does not specify a version number of
260this License, you may choose any version ever published by the Free Software
261Foundation.
262
263 10. If you wish to incorporate parts of the Program into other free
264programs whose distribution conditions are different, write to the author
265to ask for permission. For software which is copyrighted by the Free
266Software Foundation, write to the Free Software Foundation; we sometimes
267make exceptions for this. Our decision will be guided by the two goals
268of preserving the free status of all derivatives of our free software and
269of promoting the sharing and reuse of software generally.
270
271 NO WARRANTY
272
273 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
274FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
275OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
276PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
277OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
278MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
279TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
280PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
281REPAIR OR CORRECTION.
282
283 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
284WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
285REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
286INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
287OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
288TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
289YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
290PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
291POSSIBILITY OF SUCH DAMAGES.
292
293 END OF TERMS AND CONDITIONS
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295 How to Apply These Terms to Your New Programs
296
297 If you develop a new program, and you want it to be of the greatest
298possible use to the public, the best way to achieve this is to make it
299free software which everyone can redistribute and change under these terms.
300
301 To do so, attach the following notices to the program. It is safest
302to attach them to the start of each source file to most effectively
303convey the exclusion of warranty; and each file should have at least
304the "copyright" line and a pointer to where the full notice is found.
305
306 <one line to give the program's name and a brief idea of what it does.>
307 Copyright (C) <year> <name of author>
308
309 This program is free software; you can redistribute it and/or modify
310 it under the terms of the GNU General Public License as published by
311 the Free Software Foundation; either version 2 of the License, or
312 (at your option) any later version.
313
314 This program is distributed in the hope that it will be useful,
315 but WITHOUT ANY WARRANTY; without even the implied warranty of
316 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
317 GNU General Public License for more details.
318
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319 You should have received a copy of the GNU General Public License
320 along with this program; if not, write to the Free Software
321 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
322
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323
324Also add information on how to contact you by electronic and paper mail.
325
326If the program is interactive, make it output a short notice like this
327when it starts in an interactive mode:
328
329 Gnomovision version 69, Copyright (C) year name of author
330 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
331 This is free software, and you are welcome to redistribute it
332 under certain conditions; type `show c' for details.
333
334The hypothetical commands `show w' and `show c' should show the appropriate
335parts of the General Public License. Of course, the commands you use may
336be called something other than `show w' and `show c'; they could even be
337mouse-clicks or menu items--whatever suits your program.
338
339You should also get your employer (if you work as a programmer) or your
340school, if any, to sign a "copyright disclaimer" for the program, if
341necessary. Here is a sample; alter the names:
342
343 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
344 `Gnomovision' (which makes passes at compilers) written by James Hacker.
345
346 <signature of Ty Coon>, 1 April 1989
347 Ty Coon, President of Vice
348
349This General Public License does not permit incorporating your program into
350proprietary programs. If your program is a subroutine library, you may
351consider it more useful to permit linking proprietary applications with the
352library. If this is what you want to do, use the GNU Lesser General
353Public License instead of this License.
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