Date: Mon, 20 Jun 2005 19:56:31 -0700 From: Tim Kientzle <kientzle@freebsd.org> To: Garrett Wollman <wollman@csail.mit.edu> Cc: freebsd-current@freebsd.org Subject: Re: cpio/pax using libarchive? (was Re: Replace /rescue/vi with mined(1) from DragonFlyBSD) Message-ID: <42B781DF.3090802@freebsd.org> In-Reply-To: <17079.32011.712557.948691@khavrinen.csail.mit.edu> References: <20050617214658.GA41804@troutmask.apl.washington.edu> <58826.1119044951@critter.freebsd.dk> <20050617220222.GA42080@troutmask.apl.washington.edu> <20050617220653.GA114@saltmine.radix.net> <20050617221353.GA48584@troutmask.apl.washington.edu> <20050618061603.GM50157@cirb503493.alcatel.com.au> <20050619033904.GB3061@dragon.NUXI.org> <20050619070640.GQ50157@cirb503493.alcatel.com.au> <42B5C0BC.40904@freebsd.org> <20050620092543.GA54301@cat.robbins.dropbear.id.au> <42B77A6B.6090906@freebsd.org> <17079.32011.712557.948691@khavrinen.csail.mit.edu>
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Garrett Wollman wrote: > <<On Mon, 20 Jun 2005 19:24:43 -0700, Tim Kientzle <kientzle@FreeBSD.ORG> said: > >>If anyone would like to tackle this, I have one concrete suggestion: >>start with passthrough (copy) mode. If I understand it correctly, >>it can be implemented quite simply by forking: > > Nobody implements it that way, because That Would Be Slow > (particularly in `-l' mode). Harumph. Yes, you're right about that. I was thinking that a fork design would allow you to make use of tar's deep directory support (which uses chdir() a lot and would make passthrough mode pretty tricky). But the cpio design makes deep dir support tricky no matter what. I still stand by one assertion above: start with passthrough mode. ;-) Tim
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