> Which is why hoarding state management in PID 0 is a dumb idea. Because the Unix process API is unreliable and unsafe ( http://catern.com/process.html http:/

> Which is why hoarding state management in PID 0 is a dumb idea. Because the Unix process API is unreliable and unsafe ( http://catern.com/process.html http://catern.com/process.html ), managing processes is difficult to impossible in a general way under Unix systems including Linux. Linux gained some features to help with this, but for the longest time, PID 1 was the only process that could manage its child processes in a way that wasn't fraught with race conditions -- meaning systemd or something like it was the only way to have safe, effective process management because it tracked all that state in PID 1. Blame Unix being broken, not systemd, for the problems systemd solves.