Linux - 1.3 implementing user and kernel program

Part 1.3

implementing user and kernel program

 

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What we want to do :

in this section we want to implement kernel program through system calls to gather the information we want, we aslo want to implement simple user space program in C language to call our systemcall and show it in nice format to the user.

the idea here is simple I show the concept and steps here, after that I will implement them one by one.

Idea:

All we should do is the user space and kernel space point to the same RAM address like this:

 

so we should pass our structs by reference to system call, like bellow:

now we have the value of every thing that has changed in kernel mode.

 

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