copyin

[narayan at twg-ap.UUCP]

In article <4838 at brl-adm.ARPA>, Conley%csvax.cs.ukans.edu at RELAY.CS.NET writes:
> system: 780, 4.3
> 
> "Gotta do a copyin".
> 
> Dispensing with what we do ( and don't! ) know about the u area, kernel
> ....
>
> Would anyone care to shed some light on this?

This would work on a VAX where the kernel address space begins with the
high order bit turned on. But if you go to some other machine where
it is not possible to distinguish between kernel space and user space,
then this string will be treated to be in the kernel area. They you
may crash and burn. You really need to to do a uchar(I think) not
a copy in to load the string in (after setting u.u_xxx).
-- 

Narayan Mohanram

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