Re: pass-through linux ioctl for mfi(4)

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Sep 17, 2012 at 03:02:56PM -0400, Christos Zoulas wrote:
> On Sep 17,  8:42pm, bouyer%antioche.eu.org@localhost (Manuel Bouyer) wrote:
> -- Subject: Re: pass-through linux ioctl for mfi(4)
> 
> | On Mon, Sep 17, 2012 at 02:31:35PM -0400, Christos Zoulas wrote:
> | > On Sep 17,  6:08pm, bouyer%antioche.eu.org@localhost (Manuel Bouyer) 
> wrote:
> | > -- Subject: Re: pass-through linux ioctl for mfi(4)
> | > 
> | > | Sorry but I can't see how a kernel with COMPAT_LINUX but without
> | > | mfi would compile.
> | > 
> | > You you get the major by name using "mfi"...
> | 
> | I was talking about Robert's solution, which needs the mfiioctl address.
> | 
> | I looked a bit at this and it's really not straitforward. We need to
> | get the vp to have the informations we need, so we're basically re-writing
> | some of sys/kern's code ...
> | Do you have a better way to get the file's type and major ?
> 
> file's f_type should be DTYPE_VNODE, then f_data points to the vnode...
> This whole thing is too complicated. Perhaps add dlsym() in the kernel
> to do dlsym("mfiioctl")? :-)

I agree it's too complicated. Couldn't we just keep the dispatch based on
com then ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--