[openbeosnetteam] Re: Userland update
- From: "Nathan Whitehorn" <nathan.whitehorn@xxxxxxxxxxx>
- To: openbeosnetteam@xxxxxxxxxxxxx
- Date: Thu, 09 May 2002 18:10:47 EDT (-0400)
> I've started to get some commands working, but I ran into some
> problems
> that I forgot to think about earlier (stupid me):
>
> 1) ioctl() doesn't get the size of the data buffer in BeOS - it's
> always zero. Hence, it's needed to already know all the commands and
> their buffer lengths at compile time, which isn't too nice (but hey,
> it's working).
> Fortunately, BSD ioctls are computed values and contain the length of
> the buffer
>
> 2) pointers in buffers passed to ioctl() - we use them a lot, but
> also
> the BSD code (notably struct ifconf) uses them, and it's some ugly
> work
> required to copy those buffers first into the shared region.
You could use area_for() for this. Just share the memory area they are
in with the net_server. This is how net_server does it in R5.
-Nathan
--
Fortune Cookie Says:
In Dr. Johnson's famous dictionary patriotism is defined as the last
resort of the scoundrel. With all due respect to an enlightened but
inferior lexicographer I beg to submit that it is the first.
-- Ambrose Bierce, "The Devil's Dictionary"
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