Re: Kernel Module from C program

[Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>]

On Thu, Oct 27, 2011 at 04:07:08PM +0000, Luis Morales wrote:
> 
> Greetings,
> 
> 
> 
> I'm new to the world of kernel modules programming. I've read the Linux Kernel Module Programming Guide by Peter Jay Salzman,  among other documents, and I have the following question:
> 
> 
> I'd like to know if it's possible to take a program developed in C (in this case OpenSIPs, which is a SIP Proxy Server) and turn it into a kernel module (I know "to turn it" is probably not the right expression, what I mean is if I could modify it somehow so that it can be loaded as a kernel module) ?
> 
> 
> As far as I've understand, kernel modules are developed for drivers or to do some modifications to system calls, but I like to know if it's possible to do what I stated earlier. 
> 
> Thanks,
> 
> 
> Luis Morales.

As you can't use the usual user space libraries in the kernel, it might
take quite some time to port a user space program to the linux kernel
API. And I guess it wouldn't be a good idea from a security POV, as you
don't have things like memory protection in kernel space.

Thanks,
	Jonathan Neuschäfer

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