Sandboxing in Linux

Question

I want to create a Web app which would allow the user to upload some C code, and see the results of its execution (the code would be compiled on the server). The users are u

Answer 1

There's a tool called strace - it monitors system calls made by a given process. You just need to watch out for specific calls suggesting 'illegal' function access. AFAIK, it's the method used in programming competitions to sandbox contestants' programs.