RE: m_dup
RE: m_dup
- Subject: RE: m_dup
- From: "Carl Smith" <email@hidden>
- Date: Thu, 14 Apr 2005 13:59:37 -0400
- Thread-topic: m_dup
You mean have I looked at m_dup in /uipc_mbuf.c yes, do I understand it
completely no, otherwise I would not be asking these questions.
I was assuming it was a newly allocated mbuf, because it was similar to
m_devget, using m_gethdr and m_get, but I just wanted some
reconfirmation from the more experienced Mac/Unix experts.
Before I went through a bunch of kernel panics and headaches. :)
Thanks
Carl
-----Original Message-----
From: macnetworkprog-bounces+csmith=email@hidden
[mailto:macnetworkprog-bounces+csmith=email@hidden]
On Behalf Of Justin Walker
Sent: Thursday, April 14, 2005 1:49 PM
To: macnetworkprog Programming
Subject: Re: m_dup
On Apr 14, 2005, at 10:41, Carl Smith wrote:
> In my kernel code I want to make a copy of a passed in struct mbuf.
> Actually I want this mbuf copy to be a newly allocated mbuf that is a
> duplicate/clone of the passed in mbuf, but I want to be able to free
> the original mbuf.
>
> So my question is, will m_dup() do this for me or should I be looking
> at
> something else, like m_copy? Or again is it not that simple and I need
> to allocate a new mbuf, somehow, then do one of the above mentioned
> calls?
Have you actually looked at the code? That might help answer your
questions. If you have, it would be good to say so.
Regards,
Justin
--
Justin C. Walker, Curmudgeon-At-Large
Institute for General Semantics
--------
If you're not confused,
You're not paying attention
--------
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