linux-hardening

hey ptr, i just wanted to say you thanks so much for maintaining the repository up to date, this is the 10th kernel that i use from you, and by far its the fastest i have ever tried yet, (rdb-llvm branch) i wish you the best on life and thanks for making linux a much better experience overall

A way of possibly speeding up large function such as finding groups and users on system is to have it run once, and then save the results to a global variables. Then whenever this information is needed, the program wont have to search through the whole system again.

You can also only update this after a change has occurred (ie: a new user is added/removed) and run the process as a new thread i