Re: [gdm-list] Session identification and postlogin

[Francesco Fumanti <francesco fumanti gmx net>]

Hello,

pidfile="/tmp/onboard-at-gdmlogin-display-${DISPLAY}.pid"

gives
/tmp/onboard-at-gdmlogin-display-127.0.0.1:1178.0.pid
during gdmlogin

but gives
/tmp/onboard-at-gdmlogin-display-127.0.0.1:1178.pid
during PostLogin

I suppose :1178 is the display and .0 is the screen. (a display can 
be composed from multiple screens; for example a user with 2 
monitors; correct?)

So I am thinking of stripping the .0 from $pidfile during gdmlogin. 
Would this not make it screen independent?

Now I have to find a way to cut the screen indication from the value 
of $DISPLAY.
sed?

Many thanks in advance for any confirmation or help.

Francesco


At 2:11 PM +0200 8/27/07, Francesco Fumanti wrote:
> Hello,
>
>
>
>
> I am trying to do a configuration to be able to start and quit an
> simple onscreen keyboard (not gok; another one called onboard to be
> precise) during gdmlogin. (I will also start another utility, but
> that is not relevant here.)
>
> A dwell gesture will not start onboard directly; it will start a
> script that starts and quits onboard. To check whether onboard is
> already running, the script creates a pidfile with the pid of the
> started onboard instance; if onboard is already running, the script
> gets the pid from the pidfile, kills onboard and removes the pidfile.
> This is working properly on my single user setup.
>
>
>
>
> In order to make it also work with simultaneous multiple user, I
> added the value of $DISPLAY to the name of the pidfile:
>
> pidfile="/tmp/onboard-at-gdmlogin-display-${DISPLAY}.pid"
>
> Now I wonder whether this will also work in the case of users with
> multiple screens. Can anybody please confirm it?
>
>
>
>
> Moreover, when gdmlogin quits, the pidfile will remain present on the
> system if the user did not quit onboard. So I will create a "cleanup"
> script to remove the pidfile, and call it from PostLogin.
>
> Could anybody please confirm that it is the correct way to do it?
>
> Moreover, could anybody please confirm that during PostLogin, the
> variable $DISPLAY will still have the same value that it had during
> the gdmlogin session? Otherwise, the cleanup script will not be able
> to reconstruct the name of the pidfile.
>
> If $DISPLAY has changed, could anybody please tell me how I should proceed?
>
>
> Thanks in advance.
>
> Francesco
>
>
> PS: Once I have it all running, I will put everything online and send
> a link to it to this mailing list.
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