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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