Re: Intercepting system calls

[Gaurav Saxena]

Hello  J. R. Okajima

On Fri, Dec 23, 2011 at 12:55 PM, J. R. Okajima <hooanon05@xxxxxxxxxxx> wrote:
>
> 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.
Ok I have seen details of KPROBES, I think it will suit to my
requirements, I just wanted to know a few things,
Can I use probes to prevent unlink of certain files? Also is
CONFIG_KPROBES set to "y" on linux kernels available with distros like
ubuntu?
>
> 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



-- 
Thanks and Regards ,
Gaurav
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