linux-kernel - Re: fastboot: unpacking initramfs faster

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Date:	Thu, 26 Mar 2009 13:56:24 +0100 (CET)
From:	Bodo Eggert <7eggert@....de>
To:	Andreas Robinson <andr345@...il.com>
cc:	Bodo Eggert <7eggert@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: fastboot: unpacking initramfs faster

On Thu, 26 Mar 2009, Andreas Robinson wrote:
> On Thu, 2009-03-26 at 12:26 +0100, Bodo Eggert wrote:
> > On Thu, 26 Mar 2009, Andreas Robinson wrote:
> > > On Tue, 2009-03-24 at 23:11 +0100, Bodo Eggert wrote:
> [snip]

> > > > Why not make a new set? http://7eggert.dyndns.org:8080/l/bgz.tar.gz

> The file permissions are wrong, I'm not allowed to download it.

fixed

> > Thinking about it: It's now very kernel-specific, other users might like a
> > block signature to make it robust against errors - e.g. in the middle of a
> > .tar.bgz file. I think I'll change that soon and put 0x55aa in front of
> > each block.
> 
> I think we'll want an optional checksum of the compressed data.
> Suppose bit 32 in the compressed block size field is set, the next field
> is the block's Adler32 checksum.
> (the adler32 source is in include/linux/zutil.h)

I will think about it.
-- 
Funny quotes:
5. 99 percent of lawyers give the rest a bad name.
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