Current File : //snap/core/16928/etc/rc2.d/S01cgmanager
#! /bin/sh
### BEGIN INIT INFO
# Provides: cgmanager
# Required-Start: mountkernfs
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Cgroup manager daemon
# Description:
# The cgroup manager accepts cgroup administration requests
# over dbus, honoring privilege by root users in mapped user
# namespaces over the non-root mapped uids. This allows safe
# nesting of lxc containers by unprivileged users.
### END INIT INFO
# Do NOT "set -e"
PATH=/sbin:/bin
DAEMON=/sbin/cgmanager
NAME=cgmanager
DESC="cgroup management daemon"
BASEOPTS="--daemon -m name=systemd"
test -x $DAEMON || exit 0
PIDFILE=/run/$NAME.pid
if [ -f /etc/default/cgmanager ]; then
# get cgmanager_opts if specified
. /etc/default/cgmanager
fi
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions
DAEMON_ARGS="$BASEOPTS $cgmanager_opts $cgm_extra_mounts"
do_stop()
{
# If the cgmanager stops, the proxy must stop
/etc/init.d/cgproxy stop >/dev/null 2>&1 || true
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2
# Wait for children to finish too if this is a daemon that forks
# and if the daemon is only ever run from this initscript.
# If the above conditions are not satisfied then add some other code
# that waits for the process to drop all resources that could be
# needed by services started subsequently. A last resort is to
# sleep for some time.
start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
[ "$?" = 2 ] && return 2
# Many daemons don't delete their pidfiles when they exit.
rm -f $PIDFILE
return "$RETVAL"
}
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
|| return 1
# Kill any existing cgproxy
/etc/init.d/cgproxy stop >/dev/null 2>&1 || true
# check whether to start cgproxy or cgmanager
if /sbin/cgproxy --check-master; then
NESTED=yes /etc/init.d/cgproxy start || true && { exit 0; }
fi
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
$DAEMON_ARGS \
|| return $?
# Todo - once the compiled cgm is installed we could use it here to ping
# cgmanager as our test for readiness.
sleep 1
}
case "$1" in
restart|force-reload)
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
start)
log_daemon_msg "Starting $DESC" "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
status_of_proc -p $PIDFILE "$DAEMON" "$NAME" && exit 0 || exit $?
;;
*)
echo "Usage: $0 {start|stop|restart|force-reload}" >&2
exit 3
;;
esac
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