[systemd-devel] Dbus user/system session

[arnaud gaboury]

Here are the unit files I use to start my user Dbus session daemon


/home/gabx/.config/systemd/user/dbus.service
----------------------------------------
[Unit]
Description=D-Bus System Message Bus
Requires=dbus.socket


[Service]
ExecStart=/usr/bin/dbus-daemon --session --address=systemd: --nofork
--systemd-activation
ExecReload=/usr/bin/dbus-send --print-reply --session
--type=method_call --dest=org.freedesktop.DBus /
org.freedesktop.DBus.ReloadConfig

[Install]
WantedBy=default.target


/home/gabx/.config/systemd/user/dbus.socket
------------------------------------------
[Unit]
Description = D-Bus System Message Bus Socket

[Socket]
ListenStream = %t/dbus/user_bus_socket

[Install]
WantedBy=dbus.target
WantedBy=sockets.target



It seems everything is Ok as Dbus is doing its job.


gabx at hortensia ➤➤ ~aur % systemctl --user status
● hortensia
    State: running
     Jobs: 0 queued
   Failed: 0 units
    Since: Sun 2014-11-02 11:58:45 CET; 6h ago
   CGroup: /user.slice/user-1000.slice/user at 1000.service
           ├─839 /usr/lib/systemd/systemd --user
           ├─840 (sd-pam)
           ├─dbus.service
           │ └─855 /usr/bin/dbus-daemon --session --address=systemd:
--nofork --systemd-activation


Now when I list dbus process, here is the output:
118:dbus       588     1  0 11:58 ?        00:00:00
/usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile
--systemd-activation
126:gabx       855   839  0 11:58 ?        00:00:00
/usr/bin/dbus-daemon --session --address=systemd: --nofork
--systemd-activation
132:dbus       892   461  0 11:58 ?        00:00:00
/usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile
--systemd-activation
152:gabx      1485     1  0 11:58 ?        00:00:00
/usr/bin/dbus-launch --autolaunch 77f348a2b3fb429b85a5de751ea9175a
--binary-syntax --close-stderr
153:gabx      1486     1  0 11:58 ?        00:00:00
/usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
155:gabx      1494  1488  0 11:58 ?        00:00:00
/usr/bin/dbus-daemon --config-file=/etc/at-spi2/accessibility.conf
--nofork --print-address 3


As one can see, I have two similar systemd dbus-daemon processes owned
by Dbus : PID 588 & 892.

Is it the expected behavior ?

Thank you for suggestions.

-- 

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