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Date:      Sun, 25 Sep 2005 13:24:47 +0100
From:      David Malone <dwmalone@maths.tcd.ie>
To:        kamal kc <kamal_ckk@yahoo.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: kernel hack
Message-ID:  <20050925122447.GA5489@walton.maths.tcd.ie>
In-Reply-To: <20050925103151.68094.qmail@web35703.mail.mud.yahoo.com>
References:  <20050925103151.68094.qmail@web35703.mail.mud.yahoo.com>

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On Sun, Sep 25, 2005 at 03:31:51AM -0700, kamal kc wrote:
> does anybody know what is the best way
> to start kernel hack.

It isn't quite clear what you mean, but presuming you mean "make
a change to the FreeBSD kernel that you use" then:

1) First learn how to recompile your kernel.
   You can get details from the FreeBSD handbook
   (http://www.freebsd.org/handbook/).
2) Look under /usr/src/sys for the kernel source code.
   The main bit is in /usr/src/sys/kern, networking
   lives under /usr/src/sys/net* and so on.
3) Change the code you want and then recompie the kernel.
   Remember to keep an old kernel around incase you make
   a mistake.

	David.



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