How can I do "export $(dbus-launch) in booting

Question

I'm using GDbus and make a dbus communication. It using sesstion bus.

Problem is dbus-launch.

I was running dbus in Yocto with c++11. And, I have to export $(dbus-launch).

But, I want to export $(dbus-launch) or same thing in booting time. Because dbus start by systemd.

Answer 1

One solution is to have a recipe that adds environment variable:

SRC_URI +=  "file://dbus-env.sh"

do_install_append() {
    install -d -m 0755 ${D}${sysconfdir}/profile.d
    install -m 0755 ${WORKDIR}/dbus-env.sh ${D}${sysconfdir}/profile.d/
}

FILES_${PN} += "${sysconfdir}/profile.d/dbus-env.sh"

With dbus-env.sh

#!/bin/sh

export $(dbus-launch)

Answer 2

Use this command in /etc/profile or $HOME/.profile or $HOME/.bashrc :

eval \`dbus-launch --auto-syntax`

this will export "DBUS_SESSION_BUS_ADDRESS" and "DBUS_SESSION_BUS_PID" with proper values

you can also use this script:

[[ -n $SSH_CLIENT ]] && export $(cat /proc/$(command pgrep -u "$USER"  -f -- "dbus-daemon --session" )/environ| tr '\0' '\n' | command grep "DBUS_SESSION_BUS_ADDRESS=")