I will use it. I don’t care what others think. People can use su, sudo, doas, run0 by their choice, and I don’t see why we need a common opinion about it.
This. One thing Linux is about is personal freedom.
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If you make users sign in too much, they will just make their passwords short and easy to remember, even 24hrs is too much and people bitch about it all the time, especially since we have password managers enforced, meaning every time they need to Auth they need to Auth into their system, Auth into their password manager, copy the password, auth into their phone, look at the 2FA code and type that in.
Doing this every day just to open email is understandably fucking enraging even to me as a security “”“engineer”“”/analyst/${bullshitblueteamemailreaderjob}
Press it harder and they will use simple passwords that will inevitably be passed through to something external (e.g. cockpit which even I can bruteforce) or reused somewhere at some point, and then someone just has to get lucky once and run whatever
run0 sudo su <reverse shell bs here>to bypass all protections.or reused
somewhereeverywhereat some pointconstantlyI agree with you. If i had to add my password everytime I’d just add my personal account to sudo group.
Good security works with people, not against them.
SELinux has left the chat.
No.
You say that, but, lennart’s Cancer is everywhere.
ok them go suffer alone in your 2004 distro that can’t update bash because it break the 400 scripts that it use to boot lmao
This just sounds like a a solution in search of a problem.
sudo has more than 220k lines of code, I can definitely see the use of a simpler alternative.
Don’t doas already fill that gap ?
run0 is just an alias for a part of systemd, so installing doas too would be useless bloat. Another thing to note is that doas is just smaller sudo, you still wouldn’t use 99 % of its features.
edit: also from my totally surface level understanding both sudo and doas “elevate your privileges” which is supposedly unnecessary attack surface. run0 does it in a better way which I do not understand.
also from my totally surface level understanding both sudo and doas “elevate your privileges” which is supposedly unnecessary attack surface. run0 does it in a better way which I do not understand.
sudoanddoasare setuid binaries, a special privileged bit to tell the kernel that this binary is not run as the user starting it, but as the owner. A lot of care has to be incorporated into these to make sure you don’t escalate your privileges as the default interface is very limited, being a single bit.Another issue with this approach is that since you’re running this from your shell, the process will by default inherit all environment variables, which can be convenient, but also annoying (since a privileged process might write into your $HOME) or upright dangerous.
run0doesn’t use that mechanism.systemdis, being a service manager at its core, something launching binaries in specialized environments, e.g. it will start an nginx process under the nginx user with a private tmp, protecting the system from writes by that service, maybe restrict it to a given address family etc. So the infrastructure to launch processes – even for users viasystemd-run– is already there.run0just goes one step further and implements an interface to request to start elevated (or rather with permissions different from their own) processes from a user’s shell.Classic solutions do it like this:
- user starts binary with setuid (let’s say
sudo) that runs with root (because that’s the owner of the binary) privileges in their shell. Since this is a child process of their shell, it inherits all environment variables by default. sudochecks/etc/sudoersif that user is authorized to perform the requested action and either denies the request, performs it or asks for authentication.- a new process is spawned from it, again inheriting the environment variables that were not cleaned, as you can’t get rid of variables by forking (this is often an issue if you have services that have their secrets configured via environment variables)
With
run0:- user starts
run0binary as a user process. This process inherits the environment variables. run0forwards the user’s request via interface to the running systemd process (pid 1 I guess). That process however does not inherit any variables by default, since it was started outside the user’s shell.- systemd checks if the user who started the
run0binary is allowed to perform the requested operation and again, either denies the request, performs it or asks for authentication. - a new process is spawned from it, but it will only receive the environment variables that were explicitly requested as there’s no inheritance.
At least that’s my understanding, I haven’t looked too much into it or used it yet.
the pid1 part is wrong, only the systemd-init run in pid1, in it’s own process, own binary etc, it’s sole purpose is being an init system, after that it start the rest of the system, including the others systemd binaries
the rest is perfect thanks!, in the lennart he made a comparation with ssh were you “forward the commad to run as root”, i think it’s a good analogy
- user starts binary with setuid (let’s say
. run0 does it in a better way which I do not understand.
it does that in a “ssh like” that i read in the blog, they foward your commands, they don’t elevate your user, they also use polkit for security intead of sudoers
Not if no one uses it.
No one will use this either
The original problem was to automagically prompt the user for password, if he tried to run some systemd executable without the wheel privileges. At some point they decided to reuse the code for [a command that allows you to run stuff as root] replacement because sudo is too bloated and vulnerable.
Systemd, not linux
systemd/Linux, or as I’ve recently taken to calling it, systemd plus Linux
Fortunately there’s still Artix GNU+Linux :)
They’ve outarched the Arch
Laughs in Gentoo
That’s SystemD+Linux to you!
I might try run0 for fun, but I don’t think it’ll replace sudo any time soon.
The biggest issue I see is run0 purposely not copying any environment variables except forTERM.
You’d have to specify which editor to use, the current directory, stuff likePATHandHOMEevery time you run a command.deleted by creator
Wouldn’t it be better to just use containers then? Nix and Guix has the exact thing - you get to control what variables you want to pass in.
You can’t really install packages or modify configs on the host without root. Containers can only do some parts.
Su - then
I’m not a fan of the idea at all, but come on, it can’t really be that bad. There’s got to be somewhere you can tell it what environment variables to use. Probably something like
run0 systemd-edit /usr/system/systemd/systemrun/run0-environment --system-default=systemit can’t really be that bad.
LoL; you say that… But
run0 uses systemd-run i don’t remember you can use that directly
Alias it to pull those in automatically?
Maybe, but now I still need to remember the alias or distribute it to any machine I’m working on.
Not that difficult if you have everything managed with Ansible or similar anyways, but lots of people likely don’t have that setup.
No, it’ll just be yet another pile of bloat that’ll separate IBM distros and their followers (rhel, fedora, centos, debian, arch) from the rest (alpine, void, gentoo, devuan, *BSD).
Wait Arch and Debian are owned by IBM? It sounds like one insane piece of conspiracy tbh.
Nah, I’m just referring to IBM’s acquisition of redhat. I’ve been referring to redhat as IBM in kind.
And neither Arch, nor Ubuntu, nor Debian, nor OpenSUSE, nor any other distro using systemd belongs to IBM.
systemd has nothing to do with any corporation doing bad stuff to “our Linux”.
It is just newer software, doing more things more easily.
Sure, the centralization is pretty damn bad. But for example replacing sudo is needed.
But for example replacing sudo is needed.
There’s plenty of 100-loc tools for that already. And doas, who has most of sudo’s server-features, is not much bigger.
And they all work even without systemd or services.
And neither Arch, nor Ubuntu, nor Debian, nor OpenSUSE, nor any other distro using systemd belongs to IBM.
Where did I say they belong to IBM?
Sure, the centralization is pretty damn bad. But for example replacing sudo is needed.
We already have doas, which is such a simple codebase I’d have a hard time imagining it contains a bug that leads to setuid being a problem. run0’s codebase size on the other hand…
But for example replacing sudo is needed.
Seriously asking: what’s wrong with Sudo? And aren’t there already loads of alternatives?
I suppose doas is a pretty great alternative.
Smaller code is often good, but not always.
systemd nightmare needs to end. Too many broken garbage from malicious actors within the opensource community.
Just as an experiment, get every distro to have at least 2 or 3 SysVInit / runit / rc.init alternatives, and you will see a MASS Migration back to SysVInit. Bash/shell script init functions were really dead simple and almost unbreakable/hackerproof.
Systemd really needs to be thrown in the garbage dumps of history so we can finally have a UNIX-like boot back.
As someone who writes bash scripts, fuck no, this is a terrible language and it shouldn’t be used for anything more complex than sticking two programs together.
Also, parallelism goes right out of the window.
Maybe you’d convince me with a real programming language.
That just made me imagine a Rust rewrite of systemd
Any time I see a grognard seriously suggest going back to bash for anything exceeding 10 lines of code it makes me very happy none of them are in control.
If systemd is as bad as you claim why did nearly every distro switch to it?
Corpo sabotage of opensource. So many community projects are under the thumb of corpo insiders. It was a “cash-grab” a way to shoehorn and takeover an essential but mostly unchanged and stable Init system. And they shimmed that into everything they could ram it into with no options or alternatives.
that’s some high ammount of copium from someone that never made a distro
Btw can RH as the biggest contributor to systemd make it paid like it did with RHEL? Then it’s going to be the death of the free and independent Linux desktop for quite a while.
Don’t spread lies, misinformation and/or FUD.
Btw can RH as the biggest contributor to systemd make it paid like it did with RHEL?
It’s not. They’ve only made it harder for other parties to freely benefit from RHEL’s hard work at the expense of RHEL.
Don’t spread lies, misinformation and/or FUD.
Uhm what? I asked a question bruh.
They’ve only made it harder for other parties to freely benefit from RHEL’s hard work
True but they still can find something to hurt everyone. Not like I think it will happen but it is a problem with centralization and a company being behind a big and important product.
Uhm what? I asked a question bruh.
The bold parts include a false claim; i.e. Red Hat made RHEL paid.. So it’s perfectly possible to include a lie, piece of misinformation and/or straight up FUD within a question.
True but they still can find something to hurt everyone. Not like I think it will happen but it is a problem with centralization and a company being behind a big and important product.
I agree with you that Red Hat is indeed way too powerful in this realm. Hence, there will inevitably always be the fear that they might (somehow) misuse their power. So far, they’ve been mostly benevolent and I hope it will stay that way. There’s no fault at being cautious, but this should never lead us towards toxic behavior.
EDIT: Why the downvotes?
If IBM makes redhat do something that greedy and stupid (it’d be more likely to happen with a distribution like fedora or centos than userland components), we have plenty of existing infrastructure to fall back on.
(it’d be more likely to happen with a distribution like fedora or centos than userland components
I mean, if they make an actual workstation distro and kill systemd’s real FOSS nature, everyone else will have to spend some time rebuilding their distros with other init systems. That’ll be quite a sabotage.
RedHat is not restricting access to any upstream project. They package things in extremely stable form, which means they need to manage like all the software themselves and do tons of backports, as normally software just releases new versions.
They restrict access to these packages.
So yes, their 5 years old systemd with backported security fixes may be restricted. But not the normal systemd you can install anywhere.
You are not wrong. IBM management paralleled in the same cash-grab and exit C-suite functions that has consumed Redhat. That is why the merger happened.
Soon, Purple Hat should be charging for systemd and hopefully other corpos and organizations will move back to sanity.
Soon, Purple Hat should be charging for systemd and hopefully other corpos and organizations will move back to sanity.
Unless otherwise noted, the systemd project sources are licensed under the terms and conditions of LGPL-2.1-or-later (GNU Lesser General Public License v2.1 or later).
New sources that cannot be distributed under LGPL-2.1-or-later will no longer be accepted for inclusion in the systemd project to maintain license uniformity.
I can understand critism of systemd for its tools only working with itself and not with any other Unix tools. But it’s absolutely a conspiracy theory to think they’d want to charge for systemd. Though I do agree that if someone was charging for systemd (which they can’t because its open source), open source alternatives would pop up.
No, it’s licensed under the LGPL, which means source code can be freely distributed and distros would continue to package it for free no matter how hard Redhat tried to paywall it.
Eeeh, if anything, systemd is Microsoft’s contribution.
/s sort of
How is RH related to Arch lol? By having GNU core utils?
Arch ships redhat userland (systemd) and doesn’t support alternative userlands; you have to go to artix for that.
For clarity,
because the obnoxious ones out there didn’t get it,this refers to how Arch, Debian, Fedora and most other distros just default to systemd and hence can (and probably will) make use ofrun0. While, on the other hand, distros like Alpine, Artix, Devuan, Void and others (including *BSD-systems) will not. For distros with no defaults (e.g. Gentoo), the user gets to decide.
Meaning, run0 is overengineered too?
no? it an alias to systemd-run, you can call an alias bloated
imo it’s kinda like bash’s bloatness. Sure, I’d use a less bloated shell but I need bash as a bash interpreter regardless, so using a smaller shell would actually be more bloat. In a similar way you already have systemd, so you don’t really gain any more bloat by having this alias for systemd-run or how it’s called.
No, like, alternatives to systemd-stuff often do the same job in 1/3 or 1/10 the code.
Sure, but that is just unnecessary bloat if you already have the systemd-stuff installed.
but with only 1/20 of it’s capabilities lmao
80/20 you know? :) like in sudo vs. doas.
And no. Maybe Runit. Dinit, hard to say. S6 has no need for sockets but still implements it.
Prompting for every single command seems like it’d suck
Also, you can configure sudo to prompt every time if you really want.
I was on a system that was configured that way for “security”, so I would just ‘sudo bash’ which is obviously much safer /s.
My system is configured that way (by me) and I regularly use sudo -s.
I just want to see if there’s a root shell and not rely on some hidden timeout 🙄
The beauty of Linux at home, you get to choose what works best for you.
Yeah I mean at that point it’s redundant because you might as well type su -c “some command here”. On the other hand having such alias does no harm if you’re already using systemd.
su is the best. I mean, i should be using the admin (root) password for admin things, not the user password of user who is already logged in. And there needs to be a root service already running to make user have root previlages which is dumb imo. Sudo vulnerability could cause previlage escalation but if there is no root process managing this, then it can’t leak the root access. Only kernel security issue(or other root processes) will leak root access if that was the case, which i think is better.
The permission to do admin things is given by the root user, to your account. So you have to verify your identity by entering your password.
Isn’t that how it is? I though that was analogous to how almost everything worked IRL. Whether withdrawing funds from a bank or engaging government services, you prove your identity as a customer/citizen to get the relevant services. At no point do you login to bank or government computers with full privileges.
If you own your own bank, then i think you login as the one with full previlages. Yes when doing administrator things, you have to use sudo. The problem with root with sudo is, you authenticate as a user, then gain full permission from root, i.e analogous to login in to bank with full previlages.
As a person who need to run
sudo commandits better to just verify yourself as root user to gain “full access”. I’m not saying about partial previlages. That is i just need a script which is just su -c with environment variables being copiedI see where you’re coming from, but in enterprise environments, you have admin accounts and root login is disabled for security purposes.
Sure. Sudo is a super useful tool in such places. The problem I have is that it is stuffed into the desktop
Completely agree with this take. There are dozens of us!
I don’t know, we’ll just have to see. But personally, I am not a fan of tying so many functionalities to systemd.
I’m going to continue to keep avoiding Poettering software for as long as he continues to act like a jackass. Even his commit messages are dripping with condescension.
Funny. I didn’t know a single thing about the person. But that commit message made me like him more.
Ofc assuming he was just making a light-hearted joke in it.
Users were complaining that their terminal transparency was being broken by the nspawn container and that the colour for other applications like tmux were being affected by it. For example tmux was appearing in the same navy blue in the terminal emulator instead of its usual green.
Idk he’s just a hot take merchant basically. He has a particular hate-boner for distros that don’t use systemd as the default init system like void and gentoo (usually these are troll tweets as opposed to commit messages though).
Idk he’s just a hot take merchant basically. He has a particular hate-boner for distros that don’t use systemd as the default init system like void and gentoo (usually these are troll tweets as opposed to commit messages though).
shut up, wtf that has todo with the commit, people who don’t use systemd it’s not going to complain about the color of something that they don’t use
shut up
lol didn’t realise Poettering had a lemmy account
What an odd and disjointed comment
exactly lol
You’ll have to give another example in order to support your point. Because that commit was funny!
As it is running sudo with a long process is annoying missing and having to reenter my password or missing and the process timing out if I go afk to wait, I can’t imagine having to type my password every few moments when I run an upgrade. Surely this is not the pitch. This is already looking dead in the water if so, and god help me if I have to remember to type run0.
No no no
It’ll be systemctl --user enable --now systemd-run0dI’m dead
At the moment, fish doesn’t know what to do with run0. When that changes, I’ll start using it :)
I’m surprised they would implement having just run0 effectively log you in as root. For the super security conscious constrictions of the command versus sudo, it would seem that the very notion of elevating your privilege beyond the single command to be carried out, would be anathema to the whole goal of this new command. Evidently not, but it’s surprising to me.
you can run a command using run0 it’s only elevating that commads, sometimes it’s needed to login as root, it’s life
I’m trying to understand what you just wrote. Did you miss a period somewhere?
They did not miss anything. They just used commas where periods should be.
You can run a command using run0. It’s only elevating that command. Sometimes it’s needed to login as root. It’s life.
The way it is written, semi-colons may be more appropriate but that would be a lot of them.
You actually pointed out that they did, indeed, do miss a period (the one after “run0.”)
you can run a command using run0 it’s only elevating that commads,
