http://cypherpunk-handbook.i2p/articles/openbsd.html
Gentoo and other distributions (like Artix, Alpine and Void) have
the advantage of not using SystemD (or SysVinit). But QubesOS, Fedora
Secureblue, Tails, Whonix, Kicksecure, Arch, NixOS, and many others
use it. 30 - recallocarray(3) recallocarray is a libc function that ensures data is discarded
before allocating new memory and checks for integer overflow from
multiplication.