| Re: [chrony-users] chronyd C&M protocol licensing |
[ Thread Index |
Date Index
| More chrony.tuxfamily.org/chrony-users Archives
]
Well, if you want to be sure, do like Phoenix did with the IBM bios for the
PC. You get one person/team to write out the specification from the source
code for exactly what the data strucures, and queries are. Then you get
another person team which has never seen the code, only the apecification, and
inpliments the program from that, being very careful to document what was done
to ensure that they never saw the source code.
You cannot do that yourself, unless you can convince a court that you sffered
a bought of total amnesia between wrting the specification and writing the
code. Otherwise believe the presumption would be that what you write would be
a derived work.
Alternatively, you can get a special licence from the copyright holder to do
what you want. Exactly who the copyright holder would be for chrony is
unclear as a number of people have worked on it and contributed to it.
Thirdly you could do as you like and hope none of the copyright holders sue
you.
It is unclear to me which provision of GPL2 you want to violate. Do you want
to release it as prprietary code, and sue anyone who copies it? Do you want to
allow others to do that?
Note that I am not a lawyer, and this is not legal advice.
William G. Unruh __| Canadian Institute for|____ Tel: +1(604)822-3273
Physics&Astronomy _|___ Advanced Research _|____ Fax: +1(604)822-5324
UBC, Vancouver,BC _|_ Program in Cosmology |____ unruh@xxxxxxxxxxxxxx
Canada V6T 1Z1 ____|____ and Gravity ______|_ www.theory.physics.ubc.ca/
On Mon, 3 Jan 2022, Brad Hards wrote:
[CAUTION: Non-UBC Email]
Hi,
I'm working on a Java implementation of the client side of the chronyd command
and monitoring protocol - its up at https://github.com/bradh/chrony-java-parent/tree/main/chrony-java
At this stage it doesn't do much - just the tracking request + reply parsing.
I expect to add sources and sourcestats.
As noted at https://chrony.tuxfamily.org/
faq.html#_is_the_chronyc_chronyd_protocol_documented_anywhere the only
documentation for the protocol is the source code. I realise that the source
code to chrony is GPL v2 (only).
While there is no doubt that I used information from the chrony source (in
particular, candm.h and how Float encoding works from util.c), I'm not sure
whether it is a derived work. If possible, I would like to license my
implementation under a more liberal license (e.g. Apache or MIT). Is that OK?
Brad
--
To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx.
--
To unsubscribe email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxxxxxxxxxxx
with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxx.