Re: modutils 2.4.2, please test asap

[Keith Owens <kaos@ocs.com.au>]

On Mon, 22 Jan 2001 15:21:33 -0800, 
David Brownell <david-b@pacbell.net> wrote:
>Ah, but the hotplug utilities use it.
>
>A pure 2.2 system (kernel + modutils) has no "modules.*map" files.
>A pure 2.4 system (ditto) does have them.
>
>But 2.2.18 kernel + 2.4 modutils will generate "modules.*map" files,
>which is not compatible with the previous behavior of 2.2 modutils
>with such kernels.

Tricky.  Something has to know whether to use modules.usbmap or not on
2.2.  This is one occasion when _not_ creating a file might be the
correct approach.  If I change modutils 2.4.2 to unlink existing map
files and only create a new map file if at least one module contains
that map, will that fix the 2.2 problem?

What, if anything, will break if maps files are not always created?

>I forget (haven't used 2.2 in a long time) -- does 2.4 modutils
>keep to the 2.2 style module tree on 2.2 kernels, or does it change
>that around too?

Modutils 2.4 handles both directory styles under /lib/modules/<version>,
for backwards compatibility.  It is the kernel Makefile which sets the
directory style for /lib/modules and there are no plans to backport the
2.4 style to 2.2.  AC will not take a 2.2 kernel patch that forces
users to upgrade their user space utilities.


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