Oddbean new post about login | logout @2ffa8eb4 partially related, is there any hope that the in kernel IPC mechanism that was attempted with kdbys/bus-1 will make a resurgence? Somehow relying on D-BUS doesn't feel like a great security improvement over suid.
@b722fd86 unlikely. And D-Bus has its weaknesses, but security-wise it's a lot more sound than suid/fcaps mess. It has interactive auth via Polkit even. I mean, I'd do it differently sure in my ideal world that only exists in my head, but it's a fundamental improvement over fucking suid/fcaps, hence all power to D-Bus.