How to use kernel functions like get_current() in user programs
 

Hi friends,
I have started looking at data structures in Kernel very very recently. However, whenever I come across a data structure, I feel like calling them from my user program just to know its working or current value.
Say, for example, the kernel function get_current(). This is a function, which many system calls like "getpid", "getppid" use. If I want to call this function directly from my program ie, without using system call interface, what libraries should I include?

I tried the following program, but failed !!

#include <stdio.h>
#include <linux/kernel.h>
#include <unistd.h>

int main()
{
struct task_struct *p;

p = get_current();
printf ("UID = %d\n", p->uid);

return 0;
}


This program does not work, it says "Invalid dereferencing". What is the correct procedure to use such kernel functions?
Please guide.

Thanks,
Sreeram

I might be wrong, but I don't think you can do that without some level of hacking in the kernel source.