Red Hat Bugzilla – Bug 491877
session bus started outside from the consolekit session in slim
Last modified: 2010-06-28 07:33:15 EDT
Description of problem:
X clients are started inside ck-xinit-session as a fallback so that if the display manager doesn't start the consolekit session by itself, there's a console session anyway.
But the session bus is started earlier by /etc/X11/xinit/xinitrc.d/00-start-message-bus.sh so the autostarted services will have less policy kit authorizations because of not running inside the console session.
I guess that one of the following needs to happen:
- display managers like slim need to start the console session on their own,
- the fallback is fixed, so the message bus is started inside ck-xinit-session.
The right thing here is clearly to reduce the shell script madness in xinit, and fix up display managers to interact with ConsoleKit
Anyway, dbus is not involved in this; moving this bug to slim
(In reply to comment #0)
> Description of problem:
> X clients are started inside ck-xinit-session as a fallback so that if the
> display manager doesn't start the consolekit session by itself, there's a
> console session anyway.
I don't see it that way. I'd rather say that the consolekit session is
started last for no specific reason. But it could be started before.
> But the session bus is started earlier by
> /etc/X11/xinit/xinitrc.d/00-start-message-bus.sh so the autostarted services
> will have less policy kit authorizations because of not running inside the
> console session.
It is by mere chance that it is started earlier.
> I guess that one of the following needs to happen:
> - display managers like slim need to start the console session on their own,
Or the consolekit session should be started in the session scripts in xinitrc-common before xinitrc.d scripts are started. It is not only an issue for the dm, but also for X started through xinitrc. Maybe it could also be possible to start the consolekit session in etc/X11/xinit/xinitrc.d/. I guess that this would require some changes since currently I guess that ck-xinit-session has to exec a program and closes the dbus conncetion when the program is returning.
In fact, reading the code, it looks like there is no explicit code to close the consolekit session, I guess it is closed at exit in some way since ck_connector_close_session doesn't seems to be called explicitely.
Maybe the solution would be to code something like ck-xinit-session that returns the cookie and its pid, and have the process killed after the end of the session to close the dbus connection.
The problem I see is if the dm crashes the consolekit session leader could still be alive and the dbus connection would then still be open.
Looking at dbus-launch, maybe the right solution would be to have something similar with the consolekit session leader.
Isn't there a need for some common code to do a process that exits when the session exits to keep dbus connections?
I'd like to have a look at how the services that need consolekit session are started. Can you point me to a package that install such a /etc/X11/xinit/xinitrc.d file, or tell where such autostarted services are started?
Anyway, one possibility I see would be to have dbus-launch start CK_XINIT_SESSION if needed. I think it could work. So, there would be, before 00-start-message-bus.sh (could be in 00-start-consolekit-session, maybe installed together with libck-connector):
if [ -x /usr/bin/ck-xinit-session -a -z "$XDG_SESSION_COOKIE" ]; then
And 00-start-message-bus.sh would be modified to be:
if [ -z "$DBUS_SESSION_BUS_ADDRESS" ]; then
eval `dbus-launch --sh-syntax --exit-with-session $CK_XINIT_SESSION`
Wouldn't that work?
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
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