licenses (for apple OSX and others)?

2011-08-14 Thread ivo welch
curiosity question---could btrfs be licensed in multiple ways to allow
Apple and other vendors to adopt it?  as end users, having one good
file system that works everywhere as a main root system would be
heaven...
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RE: licenses (for apple OSX and others)?

2011-08-14 Thread Edward Ned Harvey
 From: linux-btrfs-ow...@vger.kernel.org [mailto:linux-btrfs-
 ow...@vger.kernel.org] On Behalf Of ivo welch
 
 curiosity question---could btrfs be licensed in multiple ways to allow
 Apple and other vendors to adopt it?  

No.  The source code is copyrighted by many different entities, and the only
way to release it under any other license would require all of the
contributors to mutually agree.  It'll never happen.  Likewise, perhaps
Apple could release their code under a license that's compatible with GPL,
but I seriously doubt that would ever happen.


 as end users, having one good
 file system that works everywhere as a main root system would be
 heaven...

Agreed.  But the various producers of filesystems are generally commercial
entities interested in making a profit.  For various reasons, many of them
intentionally don't go this direction.  They're all trying to differentiate
themselves.

Generally speaking, the problem is the requirement to integrate some other
FS into a kernel or other component that requires license compatibility for
booting.  Generally speaking you can circumvent this problem by using things
like Fuse to mount a filesystem in user space, thus not requiring it to be
built into the kernel, thus eliminating any license compatibility problems.

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Re: licenses (for apple OSX and others)?

2011-08-14 Thread ivo welch
thx, ed.

this is a case where I am wondering whether EVERYONE, including all
the commercial contributors to btrfs, would be better off with another
additional license that also allowed kernel integration for companies
like Apple.   the decision-making (and rights) for btrfs are so
dispersed, however, that we may all end up with a worse outcome,
including the commercial and other contributors.  (perhaps, it would
be worth asking them, if a mailing list of contributors to btrfs
existed.)

I am and I am not a fan of Apple.  they scare me.  I am afraid that
Apple will be much worse than IBM and Microsoft ever were.  I would
rather not see them get more than 20% market share.  still, the world
is what it is.

now, specifically, which contributors to btrfs would it hurt if Apple
were allowed to integrate the code into its kernel to make btrfs its
main file system?

I can only think of Microsoft as a company that might be hurt.  FAT is
the universal file system now, and it could lose that status.
Microsoft may not have wanted to contribute to btrfs in this case to
begin with.  did they ever contribute here?

I cannot imagine that any server company, like Sun, Oracle, or IBM,
would be worse off if OSX and linux would both use btrfs.  it would
probably make their life a whole lot easier.

linux on the desktop would be MUCH better off compared to the current
situation with everyone using their own almost-compatible file system,
and more so than OSX on the desktop would be better off.  (linux on
the server would probably be mildly better off, but here one can argue
that Apple would get more than it contributes.)  besides, the btrfs
system would control the evolution of btrfs, not Apple.

just my two cents...

/iaw


On Sun, Aug 14, 2011 at 7:00 PM, Edward Ned Harvey ker...@nedharvey.com wrote:
 From: linux-btrfs-ow...@vger.kernel.org [mailto:linux-btrfs-
 ow...@vger.kernel.org] On Behalf Of ivo welch

 curiosity question---could btrfs be licensed in multiple ways to allow
 Apple and other vendors to adopt it?

 No.  The source code is copyrighted by many different entities, and the only
 way to release it under any other license would require all of the
 contributors to mutually agree.  It'll never happen.  Likewise, perhaps
 Apple could release their code under a license that's compatible with GPL,
 but I seriously doubt that would ever happen.


 as end users, having one good
 file system that works everywhere as a main root system would be
 heaven...

 Agreed.  But the various producers of filesystems are generally commercial
 entities interested in making a profit.  For various reasons, many of them
 intentionally don't go this direction.  They're all trying to differentiate
 themselves.

 Generally speaking, the problem is the requirement to integrate some other
 FS into a kernel or other component that requires license compatibility for
 booting.  Generally speaking you can circumvent this problem by using things
 like Fuse to mount a filesystem in user space, thus not requiring it to be
 built into the kernel, thus eliminating any license compatibility problems.


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Re: licenses (for apple OSX and others)?

2011-08-14 Thread Billy Crook
On Sun, Aug 14, 2011 at 19:34, ivo welch ivo...@gmail.com wrote:
 curiosity question---could btrfs be licensed in multiple ways to allow
 Apple and other vendors to adopt it?

Great question, Ivo.

And it turns out, btrfs is already licensed to permit commercial use,
integration into other products, and resale.

The license of btrfs isn't stopping Apple or Microsoft from using
btrfs.  All licenses have terms (You should read the terms on some of
Apple and Microsoft's software), but so long as they don't violate any
terms, they are welcome to use all parts of the btrfs code for their
corporation's profit, and their customer's benefit.
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Re: licenses (for apple OSX and others)?

2011-08-14 Thread C Anthony Risinger
On Sun, Aug 14, 2011 at 9:53 PM, Billy Crook billycr...@gmail.com wrote:
 On Sun, Aug 14, 2011 at 19:34, ivo welch ivo...@gmail.com wrote:
 curiosity question---could btrfs be licensed in multiple ways to allow
 Apple and other vendors to adopt it?

 Great question, Ivo.

 And it turns out, btrfs is already licensed to permit commercial use,
 integration into other products, and resale.

 The license of btrfs isn't stopping Apple or Microsoft from using
 btrfs.  All licenses have terms (You should read the terms on some of
 Apple and Microsoft's software), but so long as they don't violate any
 terms, they are welcome to use all parts of the btrfs code for their
 corporation's profit, and their customer's benefit.

... and while some will certainly argue one way or another, this is a
case where (IMO) the code for btrfs (as a module) is clearly distinct
from the OSX kernel (as it was not even designed for it originally)
and would not constitute far reaching public release of Apple IP ...
though tbh i know nothing about OSX kernel and whether it support
things like dynamic modules, so i could be mistaken ...

... but im confident there is a way Apple could wire it up so IP
release could be very small or nonexistent.  or maintain a port if
they so wished.

the real question is whether or not they would even desire using it
with infrastructure around HFS+/etc ... in my observations Apple and
friends are incredibly ... ehm ... selective -- the hardware and
everything above it *must* have the `Seal of Approval` -- maybe to
reduce/isolate their problem pool or maintain it's clique-crazed
chic aura :-), i dont know, but it's not for the end-user's
flexibility -- that's for sure.  the glaring example to me is
virtually the entire mobile/handheld/device industry deciding on
micro-USB as the power+data xchange connection *except* one infamous
product line ...

but meh, who really knows anyway; it certainly would be incredibly
cool to have a common denominator greater than FAT, especially since
commodity flash chips are 8-16GB now.

-- 

C Anthony
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