I don’t understand how this is any improvement over pkexec
That has the same problem as sudo
: the SUID bit is set for it.
The fact that run0
uses polkit is more of a byproduct that this kinda authentication is already done with polkit all over the place in systemd. You can have individual subcommand accessible to different users (for example everyone can systemctl status
, but systemctl reboot
needs to be in the wheel
group) which is why its generally used within systemd already. And it wouldn't surprise me if again you can do it with this as well, limiting what commands can unconditionally run, need prompt or are completely blocked.
Ah yes, I need a whole separate OS just to boot my actual OS...
I would in no world call GRUB a bootloader that doesn't suck.