On Thu, 12 Mar 2020, Jędrzej Dudkiewicz wrote:
[...]
> And one more question: what is systemd-timedated? It seems that is
> exactly same thing, but I don't think this is true?
It's the DBus service that most bits of timedatectl talk to. timedatectl
doesn't modify system configuration directly. When you run `timedatectl
set-time ...`, for instance, it's actually systemd-timedated that changes
the system's time.
There's a bunch of reasons for this split: privilege separation is a good
idea in general; the privileged service can choose whether to perform or
deny a request according to the system's polkit configuration; other
non-timedatectl clients can have equal programmatic access to the same
time-and-date settings.
systemd-timedated doesn't actually have any relationship with
systemd-timesyncd, despite the similar name.
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