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177 lines
6.1 KiB
177 lines
6.1 KiB
#! /bin/sh
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# prerm script for kdm-trinity
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#
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# see: dh_installdeb(1)
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set -e
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# summary of how this script can be called:
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# * <prerm> `remove'
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# * <old-prerm> `upgrade' <new-version>
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# * <new-prerm> `failed-upgrade' <old-version>
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# * <conflictor's-prerm> `remove' `in-favour' <package> <new-version>
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# * <deconfigured's-prerm> `deconfigure' `in-favour'
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# <package-being-installed> <version> `removing'
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# <conflicting-package> <version>
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# for details, see http://www.debian.org/doc/debian-policy/ or
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# the debian-policy package
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# debconf may not be available if some massive purging is going on
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HAVE_DEBCONF=
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if [ -e /usr/share/debconf/confmodule ]; then
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. /usr/share/debconf/confmodule
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HAVE_DEBCONF=yes
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fi
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case "$1" in
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# we NEVER want to unconditionally stop kdm; see below
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upgrade|failed-upgrade)
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REMOVING=
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;;
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remove|deconfigure)
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REMOVING=yes
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rm -f /etc/init.d/kdm-trinity
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;;
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*)
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echo "prerm called with unknown argument \`$1'" >&2
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exit 1
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;;
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esac
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STOP=
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# are we supposed to restart on upgrade? if REMOVING kdm, we don't care what
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# the user says, we have to stop the daemon
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if grep -qs ^restart-on-upgrade /etc/trinity/kdm/kdm.options ||
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[ -n "$REMOVING" ]; then
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# is there an kdm process running?
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if start-stop-daemon --stop --quiet --signal 0 --name kdm-trinity; then
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# any children?
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PARENTS=$(pidof /usr/bin/kdm-trinity || true)
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CHILDREN=
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if [ -n "$PARENTS" ]; then
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for PROCESS in $PARENTS; do
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# make sure we got numbers back
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[ $PROCESS -eq $PROCESS ] 2> /dev/null ||
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exit
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# FIXME - redo this part uses shell-lib.sh from xfree86
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# die "pidof returned non-numeric value"
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# we could use grep -q here if ps would ignore SIGPIPE :-P
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if (ps axj | grep "^ *$PROCESS" > /dev/null 2>&1); then
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CHILDREN=yes
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fi
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done
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if [ -n "$CHILDREN" ]; then
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if [ -n "$HAVE_DEBCONF" ]; then
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# ask the question
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db_input high kdm/stop_running_server_with_children || true
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db_go
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# what did the user say?
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ANSWER=
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if db_get kdm/stop_running_server_with_children; then
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ANSWER="$RET"
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fi
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if [ "$ANSWER" = "true" ]; then
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STOP=yes
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fi
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# forget that we have seen the question; this is the sort of
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# non-configuration question that should be asked every time
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db_fset kdm/stop_running_server_with_children seen false
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fi
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else
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STOP=yes
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fi
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fi
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fi
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fi
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if [ -n "$STOP" ]; then
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if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
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invoke-rc.d kdm-trinity stop || true
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else
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/etc/init.d/kdm-trinity stop || true
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fi
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else
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if [ "$1" = "upgrade" -o "$1" = "failed-upgrade" ]; then
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touch /var/run/kdm-trinity.upgrade
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fi
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fi
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DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
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if [ "$1" = "remove" -o "$1" = "deconfigure" ]; then
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if [ -n "$HAVE_DEBCONF" ]; then
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# disown this question
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db_unregister shared/default-x-display-manager || true
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# does the question still exist?
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if db_get shared/default-x-display-manager; then
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if db_metaget shared/default-x-display-manager owners; then
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# FIXME - redo this part uses shell-lib.sh from xfree86
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#observe "X display managers now available are \"$OWNERS\""
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db_subst shared/default-x-display-manager choices "$RET"
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fi
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DEFAULT_DISPLAY_MANAGER=
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if db_get shared/default-x-display-manager; then
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DEFAULT_DISPLAY_MANAGER="$RET"
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fi
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# are we removing the currently selected display manager?
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if [ -n "$DEFAULT_DISPLAY_MANAGER" ]; then
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if [ "kdm-trinity" = "$DEFAULT_DISPLAY_MANAGER" ]; then
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if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
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if db_get "$DEFAULT_DISPLAY_MANAGER/daemon_name"; then
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# does the display manager file reference the current default? if
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# so, remove it because it will now be wrong
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if [ -n "$RET" ]; then
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if [ "$(cat "$DEFAULT_DISPLAY_MANAGER_FILE")" = "$RET" ]; then
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rm "$DEFAULT_DISPLAY_MANAGER_FILE"
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fi
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fi
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fi
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fi
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# ask the user to choose a new default
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db_fset shared/default-x-display-manager seen false
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db_input critical shared/default-x-display-manager || true
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db_go
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# if the default display manager file doesn't exist, write it with
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# the path to the new default display manager
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if [ ! -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
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DEFAULT_DISPLAY_MANAGER=
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if db_get shared/default-x-display-manager; then
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DEFAULT_DISPLAY_MANAGER="$RET"
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fi
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if [ -n "$DEFAULT_DISPLAY_MANAGER" ]; then
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# FIXME - redo this part uses shell-lib.sh from xfree86
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#warn "new default display manager has been selected; please be" \
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# "sure to run \"dpkg-reconfigure $RET\" to ensure that it" \
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# "is configured"
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DAEMON_NAME=
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if db_get "$DEFAULT_DISPLAY_MANAGER"/daemon_name; then
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DAEMON_NAME="$RET"
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fi
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if [ ! -n "$DAEMON_NAME" ]; then
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# if we were unable to determine the name of the selected daemon (for
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# instance, if the selected default display manager doesn't provide a
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# daemon_name question), guess
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DAEMON_NAME=$(which "$DEFAULT_DISPLAY_MANAGER" 2>/dev/null)
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if [ ! -n "$DAEMON_NAME" ]; then
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echo .
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# FIXME - redo this part uses shell-lib.sh from xfree86
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#warn "unable to determine path to default X display manager" \
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# "$DEFAULT_DISPLAY_MANAGER; not updating" \
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# "$DEFAULT_DISPLAY_MANAGER_FILE"
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fi
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fi
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if [ -n "$DAEMON_NAME" ]; then
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echo "$DAEMON_NAME" > "$DEFAULT_DISPLAY_MANAGER_FILE"
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fi
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fi
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fi
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fi
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fi
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fi
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fi
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fi
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exit 0
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