Date: Mon, 22 Feb 2010 00:46:56 +0200 From: Alex RAY <ray@ddteam.net> To: Tim Kientzle <kientzle@freebsd.org> Cc: bf1783@gmail.com, freebsd-hackers@freebsd.org Subject: Re: GEOM_ULZMA Message-ID: <20100222004656.3dd2acfe.ray@ddteam.net> In-Reply-To: <4B80C7E7.1090303@freebsd.org> References: <d873d5be1002202023w4dfcc8d9o56ec4fe53066f8ca@mail.gmail.com> <4B80C7E7.1090303@freebsd.org>
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On Sat, 20 Feb 2010 21:43:03 -0800 Tim Kientzle <kientzle@freebsd.org> wrote: > b. f. wrote: > >>> The code organization depends on what you want to do with it and how you > >>> want to update the code in the future, if your lzma library is third party. > >> LZMA made by Igor Pavlov, and since 4.62 it licensed under Public Domain. > >> So we can use it, if we need. > >> > >>> If you never intend to update the lzma code then I guess it's fine to > >>> embed it in a big .c file. For a port, it doesn't matter much since it > >>> is your own thing. There are stricter rules on maintainability and style > >>> if you want it in the base system. > >> So, I think right place for lzma library under sys/contrib directory, if I "promise" >maintain it? > > > > There are already long-standing plans to import lzma compression > > libraries into the base system, by the libarchive maintainers. > > Libarchive has hooks to support the liblzma library > from Lasse Collin's "xz utils" package. When linked > against this library, libarchive (and hence bsdtar) > has full support for "bare" lzma streams and for > Collin's "xz" format (which is a big improvement over > bare lzma streams). Like Igor Pavlov's original > code, the "xz utils" code is in the public domain. > > Officially, xz utils is in version 4.999.8beta; Collin > has promised to bump the version to 5.0 once he feels > the code is sufficiently stable. As far as I can > tell, it's actually in pretty good shape now; the > changes going in seem to mostly be minor portability > fixes. I see no reason to not import the current > version into the FreeBSD base system. I plan > to do so but may not get to it very soon; I > certainly would not complain if someone else > beat me to it. ;-) > > There are other lzma libraries around, of course. > In particular, I've seen references to the lzma libraries > distributed with lzip. Unfortunately, lzip is GPLv3 > so is not a candidate for inclusion in FreeBSD's base > system. > > Tim > Thanks for that info. GEOM_ULZMA contain two parts mkulzma and GEOM module. libarchive can help for mkulzma utility, but how they can help for GEOM module? I need to know, where correct place for lzma code in kernel tree? -- Alex RAY <ray@ddteam.net>
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