core-agent-linux/debian/qubes-core-agent.prerm

#!/bin/bash
# prerm script for core-agent-linux
#
# see: dh_installdeb(1)

set -e

# The prerm script may be called in the following ways:
#   * <prerm> 'remove'
#   * <old-prerm> 'upgrade' <new-version>
#   * <conflictor's-prerm> 'remove' 'in-favour' <package> <new-version>
#   * <deconfigured's-prerm> 'deconfigure' 'in-favour' <package-being-installed> 
#     <version> [removing conflicting-package version]
#
#     The package whose prerm is being called will be at least "Half-Installed".
# All package dependencies will at least be "Half-Installed" and will have 
# previously been configured and not removed. If there was no error, all 
# dependencies will at least be "Unpacked", but these actions may be called in 
# various error states where dependencies are only "Half-Installed" due to a 
# partial upgrade.
#
#   * <new-prerm> 'failed-upgrade' <old-version>
#
#     Called during error handling when prerm upgrade fails. The new package
# will not yet be unpacked, and all the same constraints as for preinst
# upgrade apply.
#
#    For details, see http://www.debian.org/doc/debian-policy/ or
# https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html or
# the debian-policy package

if [ "$1" = "remove" ] ; then
    # no more packages left
    if [ -e /var/lib/qubes/fstab.orig ] ; then
        mv /var/lib/qubes/fstab.orig /etc/fstab
    fi

    if [ -d /var/lib/qubes/removed-udev-scripts ] ; then
        mv /var/lib/qubes/removed-udev-scripts/* /etc/udev/rules.d/
    fi

    if [ -e /var/lib/qubes/serial.orig ] ; then
        mv /var/lib/qubes/serial.orig /etc/init/serial.conf
    fi

    for init in plymouth-shutdown \
            prefdm \
            splash-manager \
            start-ttys \
            tty ; do
        dpkg-divert --divert /etc/init/${init}.conf.qubes-disabled --package qubes-core-agent --remove /etc/init/${init}.conf
    done

    dpkg-divert --divert /etc/init/serial.conf.qubes-orig --package qubes-core-agent --remove /etc/init/serial.conf
fi

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0

# vim: set ts=4 sw=4 sts=4 et :