Re: Get source and destination info

[Casey Schaufler]

--- Shahbaz Khan <shaz.linux@xxxxxxxxx> wrote:

> Hi,
> 
> I am trying to figure out what part in the kernel code is the point
> from where I can get source and destination ip-address, port, security
> labels (selinux etc) from a packet before I export it to application
> space for my needs. Any hints?

Look into the netlabel and xfrm code. In Smack it gets dealt with
in smack_lsm.c, but Smack only uses netlabel. SELinux spreads the
handling into a number of files, including hooks.c, netlabel.c, xfrm.c,
and ss/services.c.


Casey Schaufler
casey@xxxxxxxxxxxxxxxx
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