linux-kernel - Re: Dumping the checksums in a module

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Message-ID: <20070518204650.GA17343@uranus.ravnborg.org>
Date:	Fri, 18 May 2007 22:46:50 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	John Sigler <linux.kernel@...e.fr>, linux-kernel@...r.kernel.org
Subject: Re: Dumping the checksums in a module

On Fri, May 18, 2007 at 10:27:06PM +0200, Jan Engelhardt wrote:
> 
> On May 18 2007 17:02, John Sigler wrote:
> >
> > I'm getting "disagrees about version of symbol struct_module" messages,
> > and I'm trying to understand why.
> >
> > As far as I understand (which is not very far), if I define
> > CONFIG_MODVERSIONS, then checksums for various functions (all exported
> > functions?) and various structures (which ones?) will be included inside
> > the kernel image, and written to Module.symvers. When an out-of-tree
> > module is built, it will also include these checksums.
> >
> > How do I list the checksums within a module?
> >
> > Is there a simpler way to list all the checksums?
> 
> 22:25 ichi:~ > modinfo aes
> srcversion:     8CB82B3A254D5A950FD0D14
> 
> I think this one checksum is computed out of all functions that
> the module uses.
It is computed based on all files used for the module.
Check help for "Loadable module support | Source Checksum for all modules"

	Sam
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