workaround for FreeBSD binary that hardcodes a device major (was: Re: CVS commit: src/sys/conf)

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

Simon Burge <simonb%NetBSD.org@localhost> wrote:

[About http://mail-index.NetBSD.org/source-changes/2006/09/23/0110.html]
> This would seem to break all kernel configs that don't have a twa
> device.  At least for evbppc/WALNUT I get:
> 
>       #      link  WALNUT/netbsd
>        [ ... ]
>       devsw.o:(.data+0x590): undefined reference to `twa_cdevsw'

I backed the change out to restore the build, but I wonder how this
should be fixed.

3ware's tw_cli is only available as a FreeBSD or Linux binary. The
FreeBSD version hardcodes the twa major at 187. There is the same
problem for twe at major 146. I see 3 options

1) Tag the major 187 as reserved in the MI range and only define it on
i386
2) Use a MD major for twa, and patch freebsd_sys_mknod() so that 187
gets translated into the right major
3) Use a MD major for twa, and patch the tw_cli binary so that the right
major gets used. 

What's the best way?

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost