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NEWS: add a note about symlink following in .wants and .requires 

This ain't so easy to express without using too much technical language...

https://github.com/systemd/systemd/pull/10094#issuecomment-427407570
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Zbigniew Jędrzejewski-Szmek 2018-12-18 14:31:24 +01:00
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@ -9,6 +9,19 @@ CHANGES WITH 240 in spe:
an SELinux policy update is required.
(See e.g. https://github.com/fedora-selinux/selinux-policy/pull/234.)
* When unit files are loaded from disk, previously systemd would
sometimes (depending on the unit loading order) load units from the
target path of symlinks in .wants/ or .requires/ directories of other
units. This meant that unit could be loaded from different paths
depending on whether the unit was requested explicitly or as a
dependency of another unit, not honouring the priority of directories
in search path. It also meant that it was possible to successfully
load and start units which are not found in the unit search path, as
long as they were requested as a dependency and linked to from
.wants/ or .requires/. The target paths of those symlinks are not
used for loading units anymore and the unit file must be found in
the search path.
* A new service type has been added: Type=exec. It's very similar to
Type=simple but ensures the service manager will wait for both fork()
and execve() of the main service binary to complete before proceeding