When you hate something so much you have to find weird corner cases to support your views. Even then the way described isn’t how someone who knows that they are doing would do.
The best way for an unprivileged user to manage a service is for that user to run it. That way you inherit the correct permissions / acls / selinux contexts.
What if multiple users have to manage that service?
Edit: nvrmnd, pretty sure the runnit solution won't allow this either, your answer is correct. What about while the service is already running? Wouldn't your solution require a restart?
If the service is already running it has to be stopped as a system service and run as a user service. In order to ensure that the service inherits all the correct permissions / acls / se linux policies the service needs to be launched from the limited permissions context.
With the systemd approach you’re not just passing a control handle around. You’re ensuring the process is running under an appropriate security context.
If you want to let multiple users manage the user systems service, I would probably go with sudo and systemd user files. You could create a group which has sudo access etc. The important idea is that an unprivileged user controls an unprivileged service.
pretty sure the runnit solution won’t allow this either
I'm no expert, but I think you could make a special group, set the supervise directory to be owned by that group, and add all relevant users to that group? Either way, as I explained in a different reply, running the service as a user vs letting that user control a root service are completely different things, and one is not always a substitute for the other.
Lol. Lmao even. I needed to do this because I wanted to learn the miryoku keyboard layout , and I wanted a way to quickly switch between Miryoku and standard QWERTY. The best way to do this that I could come up with was to bind a special key on my keyboard to toggle kmonad on and off. So I wrote a service for kmonad and gave my user permission to manage it. Running kmonad as my user wouldn't work, because kmonad needs root to create a virtual input device.
Luckily, I am running Void, so the solution was a single well-documented command. Out of curiosity I decided to take a look at what this would look like on systemd distros, leading to this meme. Honestly, I had to do a double take by the time the guy started talking about Javascript.
I feel kind of useless typing this out because you're just gonna ignore it anyway. In my post, I am talking about needing to do X. Your response is "why are you doing X, you should do Y". Why am I not surprised that you're a systemd user? Do you also use Gnome by any chance?
Hey. There is no reason to feel useless. Everyone has value. And the best part about Linux is that we all can make our own choices. If people hate systemd they don’t have to use it. That’s ok. Void linux I think is actually a pretty cool distro. It reminds me of the BSDs for some reason.
I use systemd because I like how it works and I think it’s well designed. As for desktops I am a huge fan of sway. Gnome isn’t bad on a laptop or tablet though. What do you use?
Your response is "why are you doing X, you should do Y"
Because they're right, you shouldn't do X. I know that's not a satisfying answer for most people to hear, but it's often one people need to hear.
If the process must run as root, then giving a user direct and unauthenticated control over it is a security vulnerability. You've created a quick workaround for your issue, and to be clear it is unlikely to realistically cause you problems individually, but on a larger scale that becomes a massive issue. A better solution is required rather than recommend everybody create a hole in their security like yours in order to do this thing.
If this is something that unprivileged users reasonably want to control, then this control should be possible unprivileged, or at least with limited privilege, not by simply granting permanent total control of a root service.
This is ultimately an upstream issue more than anything else.
Wait, aren't most desktop environment support switching keyboard layout these days? For example, gnome can do that with super+space or via the language switcher in the top bar. Using a user service to do this seems overkill.
and I wanted a way to quickly switch between Miryoku and standard QWERTY. The best way to do this that I could come up with was to bind a special key on my keyboard to toggle kmonad on and off.
Ok, just stop complaining. Almost everyone else disagrees and most of the community doesn't even know that there is a different init system. Systemd was widely accepted 6 years ago and we have moved on.
The good news is that you don't have to use it. The bad news is pretty much everyone expects you to be using it.
Big news (from 2017): debian held back software features because someone doesn't like the new way of doing things. Let's blame systemd for this unprecedented case.
What's wrong with giving access to the specific sudo command, as suggested in the other answers?
one is giving the permission to manage the system service to a specific user, the other is running the service as the current user so they have permission to manage it by default
Systemd was created to replace the init system, then through extreme scope creep took over way more than wanted and needed, the main developer was "problematic" to say it politically correct, and in practice it has over complicated many super easy tasks to the point that I hate it. Other init systems were intuitive, systemd is all but.
Few weeks ago I setup a systemd server ssh server. Changing the port would be 5 seconds in changing a line in the sshd config, but now with the new and improved systemd I need to follow some nightmare documentation into creating systemd files in unrelated places and reload configs or something and I'm done with it
If you've never had a reason to not use it, then it's fine to continue using it. Systemd has been shown to be more or less stable, fast, and secure. The reason I don't like it is because it makes simple things really complicated. Some examples:
Distros that use systemd init also seems to prefer using other systemd components as well. So you can get caught in weird situations where one task is spread across two different systems (e.g. systemd timers vs cron, systemd-elogind vs acpid)
If none of these sound familiar, then switching to a non-systemd distro likely won't make your life easier. But if you do, then it might be worth considering.
I'm out of the loop. The answer that references "one person's personal opinion" is from 2017, and the context it links to is from 2016. Surely things have changed since then, right?
.. Right?
(I'm genuinely asking, I've got no idea)
Edit: I just checked on Linux Mint 21.3. It's still on the same version as back then, 0.105. Well, Debian is nothing if not sable!
Mint 21.3 is based on Debian Bookworm (via Ubuntu 22.04, not counting LMDE of course). I don't know what you're looking at and I also don't fully know how this works, but what you said doesn't seem to be the case.
Gonna be honest, never heard of running before this. Briefly considered switching before OPs presentation in the comments turned me off. I don't want to associate with his/ her mind of weirdo, they aren't fun.
I don't support calling people who volunteer their time to develop free software "just shit", but I can't help but agree at least a little bit about redhat. Redhat is kind of like Richard Nixon: if you just assume that eveything you dislike is their fault, you would be right surprisingly often.
"Predictable" interface naming
avahi
dbus
That being said, they did also contribute to a lot of kickass software, from btrfs to Firefox to linux namespaces to qemu to pipewire, as well as to software that you can't really live without like glibc or gdb. So I guess the converse also holds: if you just assume that everything you like is there thanks to redhat, you would be correct pretty often as well. Can't really say that about Nixon though.