Re: [PATCH] 2.2: /proc/config.gz

From: Philipp Rumpf (prumpf@parcelfarce.linux.theplanet.co.uk)
Date: Sat Sep 02 2000 - 11:29:00 EST


On Fri, Sep 01, 2000 at 01:28:08PM +0100, Alan Cox wrote:
> > On Fri, Sep 01, 2000 at 02:23:57PM +0200, almesber@lrc.di.epfl.ch wrote:
> > > I don't see the advantage over Alan's proposal of simply adding the
> > > config data to the bzImage or whatever is the most common format on
> > > the respective platform. You still have the same fundamental problem
> > > to solve (i.e. accessing the file), plus you may need to extend the
> > > boot loader(s) to support a new format ...
>
> My goal would be to ensure that the bootloader didnt need to be modified.
> It seems to work fine if you blindly tack junk on the end of a bzImage

We still load it into memory during boot then but overwrite it with the
uncompressed kernel. This means it might not be a great idea for 16 MB
of additional data but for .config it souhld be fine.

> As to the tool argument - looking for a 16byte magic key sequence and printing
> the rest is not hard.

in fact you can do
        cat .config.gz >> bzImage
        echo >> bzImage
        echo $(wc -c .config.gz) >> bzImage

and seek to the right offset directly.

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