Launching UI in logged in user context
 

Hi,

I am running Red Hat Linux 4. I have a program that gets started everytime when system gets up. The program runs with root privileges. In this program, I want to find who is currently logged in. What I want to do is to start the User interface process in logged in user mode.


e.g.

int main(int c, char *[]){

char *loggedUser = getenv("USER");

//Based on loggedUser value; execute further
return 0;
}


Consider the following scenario;
1. Start the system,
2. Program will get loaded with root privilege,
3. logged in to the system with 'test' user (i.e. non -root),
4. command getenv("USER"), returns 'null' value, How come?
5. if root logs in, then getenv("USER") returns 'root'


Is there any why to find who is currently logged within a process which is started by root?

First of all, why you process runs under root ? It should use it's own user or the connected user.

The process must run under root as it needs some root privileges.

What about the 'who' cmd ?

Got it...

I am using 'w -ih'/'who'