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NEWS: move PrivateUsers= change at the top, as it changes behaviour

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This commit is contained in:
Luca Boccassi 2023-06-28 14:33:48 +01:00
parent d7b3c52cb1
commit e6da1e04c6
1 changed files with 15 additions and 5 deletions
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NEWS
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@ -27,6 +27,21 @@ CHANGES WITH 254 in spe:
*now* to include a native systemd unit file instead of a legacy
System V script to retain compatibility with future systemd releases.
* Behaviour of the per-user service manager units have changed w.r.t.
sandboxing options, so that they work without having to manually
enable PrivateUsers= as well, which is not required for system units.
To make this work, we will implicitly enable user namespaces
(PrivateUsers=yes) when a sandboxing option is enabled in a user unit.
The drawback is that system users will no longer be visible (and
appear as 'nobody') to the user unit when a sandboxing option is
enabled. By definition a sandboxed user unit should run with reduced
privileges, so impact should be small. This will remove a great source
of confusion that has been reported by users over the years, due to
how these options require an extra setting to be manually enabled when
used in the per-user service manager, as opposed as to the system
service manager. For more details, see:
https://lists.freedesktop.org/archives/systemd-devel/2022-December/048682.html
Security Relevant Changes:
* pam_systemd will now by default pass the CAP_WAKE_ALARM ambient
@ -114,11 +129,6 @@ CHANGES WITH 254 in spe:
* The "systemctl clean" command may now be used to clear the fdstore of
a service.
* The PrivateUsers= setting is now implied for user services if certain
sandboxing options are enabled for them, that cannot be implemented
unprivileged unless a user namespace is allocated. (See comment about
this in the v253 NEWS below).
* Unit *.preset files gained a new directive "ignore", in addition to
the existing "enable" and "disable". As the name suggests it leaves
units defined like this in its status quo, i.e. neither enables nor