Bug#793519: Error org.freedesktop.DBus.Error.Failed: Configuration file needs one or more <listen> elements giving addresses

[積丹尼 Dan Jacobson]

Package: dbus
Version: 1.9.18-1

Setting up dbus (1.9.18-1) ...
Installing new version of config file /etc/dbus-1/session.conf ...
Installing new version of config file /etc/dbus-1/system.conf ...
A reboot is required to replace the running dbus-daemon.
Please reboot the system when convenient.
Error org.freedesktop.DBus.Error.Failed: Configuration file needs one or more <listen> elements giving addresses


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[Simon McVittie]

retitle 793519 after upgrade to 1.9.18, reloading bus config does not work until system is rebooted
forwarded 793519 https://bugs.freedesktop.org/show_bug.cgi?id=89280#c30

On 24/07/15 20:33, 積丹尼 Dan Jacobson wrote:
> Installing new version of config file /etc/dbus-1/session.conf ...
> Installing new version of config file /etc/dbus-1/system.conf ...
> A reboot is required to replace the running dbus-daemon.
> Please reboot the system when convenient.
> Error org.freedesktop.DBus.Error.Failed: Configuration file needs one or more <listen> elements giving addresses

This is a known and unavoidable consequence of the change to how
bus setup works in 1.9.18; the stub configuration file in
/etc/dbus-1 as installed by 1.9.18 is not a valid configuration
file for whatever you were upgrading from (assuming << 1.9.18).
For those not using development-branch releases, the only time
this is encountered would be on upgrade from 1.8 (jessie) to 1.10
(stretch, soon).

The maintainer script already advised you to reboot when
convenient, so I don't consider it to be a major issue that
the bus configuration can't be reloaded (e.g. to allow a
newly installed D-Bus system service to work) until you have
done so. However, it's good to have a bug documenting this.

I don't think this can be made to work better while still
achieving the goal that basic bus setup moves to /usr
and dbus-daemon can be run without error with an empty /etc,
without at least one of these bad effects:

* breaking upgrades on systems where the sysadmin has
edited /etc/dbus-1/system.conf (which Debian policy says
they may, but comments in the file say they should not)
* potentially leaving system.conf in a state where changes
in subsequent dbus upgrades do not take effect (which
could result in security vulnerabilities remaining unfixed)
* setting up a cyclic <include> loop between /etc and /usr

Suggestions welcome, but please read the various config
files and https://bugs.freedesktop.org/show_bug.cgi?id=89280
first, to get the context and rule out things we already
considered.

Any dbus upgrade in which we added new syntax <foo/> for
system.conf, and used <foo/> in the new system.conf, would
have the same problem.

S

[積丹尼 Dan Jacobson]

OK but then there should be a message saying don't worry about the next message:

>> Installing new version of config file /etc/dbus-1/session.conf ...
>> Installing new version of config file /etc/dbus-1/system.conf ...
>> A reboot is required to replace the running dbus-daemon.
>> Please reboot the system when convenient.

The following "Error org.freedesktop ..." message is expected and can be ignored.