Date: Tue, 01 Jan 2008 02:31:43 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: kientzle@freebsd.org Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, simon@freebsd.org Subject: Re: cvs commit: src/lib/libarchive Makefile archive.h.in archive_entry.c archive_entry.h archive_entry_link_resolver.c archive_entry_private.h archive_entry_strmode.c archive_platform.h archive_read.c archive_read_support_compression_none.c archive_read_support_format_all.c ... Message-ID: <20080101.023143.-160243128.imp@bsdimp.com> In-Reply-To: <4779D924.8020708@freebsd.org> References: <20071231001554.GB987@zaphod.nitro.dk> <20071231.203352.-165197022.imp@bsdimp.com> <4779D924.8020708@freebsd.org>
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In message: <4779D924.8020708@freebsd.org>
Tim Kientzle <kientzle@freebsd.org> writes:
: M. Warner Losh wrote:
: > In message: <20071231001554.GB987@zaphod.nitro.dk>
: > "Simon L. Nielsen" <simon@FreeBSD.org> writes:
: > : > * New read support: mtree format
: > :
: > : This sounds interesting but I can't really figure out what it
: > : does... ? :) (and I couldn't find any mention in the updated manual
: > : pages.)
: >
: > Any chance our 'install' tools can be made to copy the files w/o the
: > right permissions and 'log' the right stuff to an mtree formatted
: > file? That would make building a distribution as a mere mortal
: > possible...
:
: Yep. ;-) That's a major motivation of this work.
: In fact, you don't even need to copy the files
: anywhere. The approach I'm considering would
: have "make buildworld" write out entries of this
: form during the build:
:
: /bin/ls uid=0 mode=0555 contents=/usr/obj/usr/src/bin/ls
:
: Then "make installworld" becomes essentially just:
:
: tar -xUvf world.mtree -C ${DESTDIR}
:
: or you can create a distribution tarball with:
:
: tar -czf world.tgz @world.mtree
I mostly like this idea, save for one problem: install will strip the
symbols from /usr/obj/usr/src/bin/ls before installing it into
$DESTDIR/bin/ls.
: In particular, I like that this approach uses exactly
: the same machinery for local installs or distribution
: building, varying only in the very last step.
:
: The code I just committed to -CURRENT is sufficient to
: begin experimenting with this approach; you just need
: to be careful to include "#mtree" as the first line
: (to please libarchive's auto-format detection).
: The use of full pathnames in mtree files is another
: idea I copied from the NetBSD folks; I've documented
: this as "mtree v2" in the mtree.5 manpage.
:
: There are still a lot of details to work out, but I
: hope this is sufficient for someone else to begin
: experimenting with the next step, which is figuring out
: the appropriate ways to change our distribution build.
Yes. Any ideas how long the experimentation will last?
Warner
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