where exactly is this patched call on socket?

Somewhere in this forum I found it said on af_inet.c

But I dont find this file in any of my sources... :(

On Sun, Apr 24, 2011 at 5:45 PM, Earlence <[email protected]> wrote:

> to connect to the internet, the process should have the internet gid.
> it is given this gid when the internet permission is granted to its
> surrounding apk.
> the check has been patched into the socket calls. you don't have to
> worry about requesting permission anywhere else than in your manifest
> file.
>
> -Earlence
>
> On Apr 24, 1:20 pm, 万朝新 <[email protected]> wrote:
> > ps:
> > For example,if i want to set up a socket connect ,how can i request
> > permission. And which part of android source code implementation the
> > permission check .
> >
> > Thanks very much!
> >
> > 2011/4/22 mytears <[email protected]>
> >
> > > Hello All,
> > >        i know that the permissions of Applications are written in
> /data/
> > > system/packages.xml and the requests are checked by
> > > ActivityManagerService.java.  but i don't know if there is permission
> > > check by android while i am ececute Native C.  And how to implement
> > > the permission checks on Native C.
> >
> > > Thanks a lot!!
>
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