linux-kernel - Re: Intercepting system calls

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Message-ID: <1162.1324625149@jrobl>
Date:	Fri, 23 Dec 2011 16:25:49 +0900
From:	"J. R. Okajima" <hooanon05@...oo.co.jp>
To:	Gaurav Saxena <grvsaxena419@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Intercepting system calls

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
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