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Date: Mon, 21 Apr 2014 23:14:15 +0800
From: bycn82 <bycn82@gmail.com>
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To: "Andrey V. Elsukov" <ae@FreeBSD.org>
Subject: Re: how does it pass in the rule sets
References: <5352298C.2090902@gmail.com> <53552C83.7060008@FreeBSD.org>
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On 4/21/14 22:34, Andrey V. Elsukov wrote:
> On 19.04.2014 11:45, bycn82 wrote:
>> Hi,
>> can someone help to explain how does the user land command `ipfw` pass
>> the rule set into the hook function in the kernel? I assume that it must
>> be hardcoded in somewhere, but I did not find it yet.
> ipfw(8) uses raw socket and setsockopt(2)/getsockopt(2) functions to
> interact with kernel. In particular, do_cmd() function from ipfw2.c does it.
>
Thanks very much,
Actually I saw the source already, the ipfw_ctl() method. I would like 
to call it as "an event handler"
But why it will triggered?  where are the code to register this method 
as listener?
Sorry for using Java terminologies ;)