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From: "J. R. Okajima" <hooanon05@yahoo.co.jp>
Subject: Re: Intercepting system calls
To: Gaurav Saxena <grvsaxena419@gmail.com>
Cc: linux-kernel@vger.kernel.org
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Date: Fri, 23 Dec 2011 16:25:49 +0900
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Hello Gaurav,

Gaurav Saxena:
> I am writing an application for which I need to intercept some
> filesystem system calls eg. unlink. I need unlink to call my code
	:::

For kernel space, CONFIG_KPROBES may help you.
See Documentation/kprobes.txt in detail.

For user space, $LD_PRELOAD may help you.
You will need to develop your shared object library which contains
your_unlink() and replaces the original unlink().
See ld.so(8) manual page.


J. R. Okajima