Optional mmap(2) support for geom(4) providers

[Poul-Henning Kamp]

In message <20060516212707.GI65555 at funkthat.com>, John-Mark Gurney writes:
>Maxim Sobolev wrote this message on Tue, May 16, 2006 at 01:24 -0700:
>> Well, in my particular case I would like to experiment with
>> dynamic exporting of shared ELF objects from the kernel into
>> userspace. md(4) seems like a good fit, but dlopen(3) uses
>> mmap, so that it doesn't work OOB. There can be other uses
>> as well.
>
>Doing a seperate cdev that implements mmap is quite easy...
>
>For something like that it seems like you wouldn't need any of md's
>disk device features, would you?

I agree, md(4) will only get in the way of what is necessary.

Look at the adlink driver, it is much closer to what you want.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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