Re: Hooking a system call.

[Peter Senna Tschudin <peter.senna@xxxxxxxxx>]

There are many syscall examples for systemtap at: http://sourceware.org/systemtap/examples/

On Mar 26, 2012 6:09 AM, "Mulyadi Santosa" <mulyadi.santosa@xxxxxxxxx> wrote:

On Mon, Mar 26, 2012 at 15:14, V.Ravikumar <ravikumar.vallabhu@xxxxxxxxx> wrote:
> But in my sample module example code for  intercepting system call. how can
> I make system_call_table address to writable so that one can change to
> customized system call.

My memory is a bit rigid about this part, but IIRC it's work of linker
script that put the section that holds syscall table into read-only
section. Not sure if that attribute could be changed on the fly

--
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com

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