[systemd-devel] systemd service not connecting to session dbus

[Deepan Muthusamy]

My application is a user created application which will interact with systemd to monitor other running process, so I have to connect to system dbus. At the same time My application has to communicate with other session applications, so Iam communicating using session bus.Also My application has to start at boot time by systemd. Is it possible? If possible what are all the changes I have to make?

My target board is rcar H3. My target os is yocto project with genivi meta ivi system.


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________________________________
From: Mantas Mikulėnas <grawity at gmail.com>
Sent: Monday, August 13, 2018 7:13 PM
To: Deepan Muthusamy
Cc: Systemd
Subject: Re: [systemd-devel] systemd service not connecting to session dbus

On Mon, Aug 13, 2018 at 3:37 PM Deepan Muthusamy <deepan.muthusamy at tcs.com<mailto:deepan.muthusamy at tcs.com>> wrote:

My application has to communicate to both system dbus and session dbus and I want to start my application through systemd. How to do that?

Everything can use the system bus, but only applications belonging to the session can use the session bus. Trying to access user sessions from within a system service is somewhat contradictory (is it a system service *or* is it a desktop app?). It *is* technically possible but you need a really good reason as well as to consider that there can be more than one session, less than one session, that sessions can appear and disappear at any time... The only common exception are tightly integrated embedded distros, where exactly one permanent session exists.

--
Mantas Mikulėnas
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