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



On Sun, Sep 24, 2006 at 03:13:31PM +1000, matthew green 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?
> 
> 
> since the hardcoded value is for freebsd, #2 seems the right place.

I agree. It's a FreeBSD-specific issue, it needs a FreeBSD-specific fix.

Take care,

Bill

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