[systemd-devel] service runs - but it's not really there

[lejeczek]

On 29/01/2021 13:02, Reindl Harald wrote:
>
>
> Am 29.01.21 um 13:55 schrieb lejeczek:
>>>> ● user at 0.service - User Manager for UID 0
>>>>     Loaded: loaded 
>>>> (/usr/lib/systemd/system/user at .service; static; vendor
>>>> preset: disabled)
>>>>     Active: active (running) since Thu 2021-01-28 
>>>> 17:13:01 GMT; 2h 34min ago
>>>>   Main PID: 854314 (systemd)
>>>>     Status: "Startup finished in 44ms."
>>>>      Tasks: 35
>>>>     Memory: 69.3M
>>>>     CGroup: /user.slice/user-0.slice/user at 0.service
>>>>             ├─init.scope
>>>>             │ ├─854314 /usr/lib/systemd/systemd --user
>>>>             │ └─854319 (sd-pam)
>>>>             └─syncthing.service
>>>>
>>>> exists and gets auto started by "systemd" without any 
>>>> asking really.
>>>> This is really very bad, no?
>>>> What am I missing here?
>>> systemd at the very least will spawn your per-user dbus 
>>> daemon, which
>>> is needs to be available for many programs to function. 
>>> Even others
>>> require systemd themselves.
>>>
>>> Lennart
>>>
>>> -- 
>>> Lennart Poettering, Berlin
>> I think I found it, in my opinion a very cheeky bastard - 
>> syncthing - who does this:
>>
>> [Install]
>> WantedBy=default.target
>>
>> which results in:
>>
>> -> $ llr /etc/systemd/user/default.target.wants/
>> total 0
>> lrwxrwxrwx. 1 root root 39 Jan 26 10:39 syncthing.service 
>> -> /usr/lib/systemd/user/syncthing.service
>>
>> So those of you on RHEL and derivatives (I assume that 
>> same rpm goes to all those) - suffices to install 
>> "syncthing" an you have your "roor" does as above and if 
>> you are not aware then the "root" does that with you not 
>> even knowing.
>>
>> As a matter of sharing opinions - is that a good & 
>> healthy practice to make & distribute packages like that?
>
> what is your problem?
>
> it's an ordinary user session and not some mystery of 
> "root does as above"
>
> RTFM 
> https://www.freedesktop.org/software/systemd/man/user@.service.html 
> instead talking about "very cheeky bastard - syncthin"
I doubt I can explain or express it any better, If you do 
not get it it's fine.
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