Tyler,
This is quite possible.
The ps command reads ALL or most of the info it needs from the /proc
directory. The proc filesystem is a virtual filesystem implemented by the
kernel.
If you change ps software then you will be able to implement these security
restrictions.
(1) check the login
(2) if only root , then read and show from /proc files.
You can get the source code of ps from
http://ftp.debian.org/debian/dists/potato/main/source/admin/psmisc_19.orig.tar.gz
Thanks
Sena Seneviratne
Computer Engineering Lab
School of Electrical and Information Engineering
Sydney University
Australia
At 09:12 PM 6/15/2006 -0600, you wrote:
OK, I am pretty good with c. My goal here is... Well, when a user types who,
I don't want it to work, unless its root. (easy to change) but I want some
security like that in the kernel. Also, I want to limit it to when the user
types ps, they can't get everyone's processes, but jsut there own, unless of
course, they are root.
Thanks,
~~TheCreator~~
website:
http://tysplace.shaned.net
msn:
[email protected]
aim:
st8amnd2005
skype:
st8amnd127
moo coder/wizard and administrator
----- Original Message -----
From: "sena seneviratne" <[email protected]>
To: "Tyler Littlefield" <[email protected]>
Cc: <[email protected]>
Sent: Thursday, June 15, 2006 8:01 PM
Subject: Re: a newbie with the kernel--a few questions
> Hi,
>
> I have done some kernel programming with the kernel 2.4.19 and implemented
> some features which are required by some of our research projects.
>
> (1) The first thing is you have to be good in C programming.
>
> (2) Then you should know what you would like to do. Whether it would be an
> addition of new feature? or an improvement?
>
> (3)At this place kernel code is available for cross-referencing and
> learning etc
> http://lxr.linux.no/source/
>
> (4) You can download kernel from
http://www.kernel.org/pub/linux/kernel/v2.6/
>
> What is your objective?
>
> Thanks
> Sena Seneviratne
> Computer Engineering Lab
> School of Electrical and Information Engineering
> Sydney University
> Australia
>
>
>
>
> At 05:03 PM 6/15/2006 -0600, you wrote:
> >Hello list,
> >I have a couple questions.
> >First, I want to get into kernel programming.
> >It looks kinda, imposing with the directories and everything. How do you
> >know what is what? If you want to write something, how do you know where
to
> >put it in so that it conflict with other things? Also, how do you know
what
> >functions are where? I guess I am just looking for something on the
design
> >of the kernel, probably its structure when looking at the source code.
> >thanks,
> >~~TheCreator~~
> >website:
> >http://tysplace.shaned.net
> >msn:
> >[email protected]
> >aim:
> >st8amnd2005
> >skype:
> >st8amnd127
> >moo coder/wizard and administrator
> >
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-kernel"
in
> >the body of a message to [email protected]
> >More majordomo info at http://vger.kernel.org/majordomo-info.html
> >Please read the FAQ at http://www.tux.org/lkml/
>
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