Linux

48190 readers

1270 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

[email protected]

How do you disable machinectl entirely? [solved] (iusearchlinux.fyi)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

3 comments fedilink hide all child comments

I’m mostly interested in disabling the command to create a root shell ‘machinectl shell @root’. Attempting to ‘systemctl disable systemd-machined’ doesn’t work.

Edit:

After some more poking, it seems polkit is the way to do it. Create the file /etc/polkit-1/rules.d/10-deny-machinectl.rules and add the following

polkit.addRule(function(action, subject) {
   if (action.id.startsWith("org.freedesktop.machine1.")) {
         return polkit.Result.NO;
   }
});

The list of all actions you can filter on are in /usr/share/polkit-1/actions/org.freedesktop.machine1.policy

top 3 comments

sorted by: hot top controversial new old

[–] [email protected] 6 points 1 year ago

I didn't find a way to disable the command but in this discussion they seem to change it to request the root password:
https://github.com/systemd/systemd/issues/2799

[–] [email protected] 5 points 1 year ago (1 children)

I didn't even know about machinectl. Thank you

[–] [email protected] 2 points 1 year ago

The worst is that if the ‘wheel’ group is empty, it will give a root shell to absolutely anyone.