From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Thu, 20 Mar 2014 12:26:29 -0700
Subject: Fwd: Adding custom system calls
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On Fri, Mar 21, 2014 at 12:50:27AM +0530, arun kumar wrote:
> 
> yeah it does seems like a homework question..
> 
> I remember doing it on KernelVersion: 2.6 by modifying some files including
> unistd.h writing a wrapper for it and writing the code for it. This included
> some tweaking inside the /arch subtree of the kernel.
> my intentions are entirely academic.
> 
> Currently working on kernelVer: 3.12.14
> I am somewhat struggling to comprehend the changes (steep learning curve), if
> you could guide me on what files to look for, i am sure i can find my way from
> there.

There's loads of "how to add a syscall to Linux" tutorials out there,
what have you tried and what errors have you gotten when following them?

greg k-h