Attaching an NKE to Existing Sockets
Attaching an NKE to Existing Sockets
- Subject: Attaching an NKE to Existing Sockets
- From: Jones Curtis <email@hidden>
- Date: Tue, 29 Aug 2006 14:23:02 -0400
I hope this is an appropriate place for this question; if not, if you
have any good suggestions on where I might get an answer, let me
know. I've searched all over and found very little.
Briefly, I would like to be able to attach a socket filter to sockets
(including listeners) that were created prior to the loading of my NKE.
I looked at how netstat worked, using a sysctl to get at tcbinfo, and
after digging through various structs, I wasn't convinced that I'd be
able to get a socket_t out of that, even if I could figure out how to
get at that symbol.
I also saw that every open socket is added to the associated proc
struct (I think), but I wasn't sure how I could distinguish between
sockets and non-sockets. And I thought I might be reduced to
iterating through all possible pids, unless I could similarly get
access to the pidhashtbl symbol.
And both of those ideas relied on symbols that I'm probably not
supposed to be using, directly, anyway.
Anyway ... any help would be appreciated.
Thanks.
--
Curtis Jones
email@hidden
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