core-agent-linux/qubes-rpc/qubes.WaitForSession
Marek Marczykowski-Górecki 96aa933024
Wait for user session as X session owner
... instead of requested user. This makes sure that session startup
script will be able to send a signal here to notify about session
startup.

This is especially needed when the first service started in the VM is
called as root (like qubes.InstallUpdatesGUI).

Fixes QubesOS/qubes-issues#3526
2018-02-14 02:19:15 +01:00

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#!/bin/sh
# old API - get the user from caller
#read -r IGNORE_USERNAME
# use default user provided in QubesDB, or hardcoded 'user' - this must be the
# same as the X session owner
USERNAME=$(qubesdb-read /default-user || echo 'user')
cmd='echo $$ >> /tmp/qubes-session-waiter; [ ! -f /tmp/qubes-session-env ] && exec sleep inf'
if [ "$(id -un)" = "$USERNAME" ]; then
sh -c "$cmd" 2>/dev/null
else
su -c "$cmd" - "$USERNAME" 2> /dev/null
fi
# the above line is _expected_ to be terminated by a signal, don't treat this as a failure
exit 0