Current File : //snap/core20/current/usr/lib/init/init-d-script
#!/bin/sh
# See init-d-script(5) for instructions on how to use this library.
#=============================================================================
# Shift arguments early to fix #826214
__init_d_script_name="$1"
shift
# 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
# PATH should only include /usr/* if it runs after the mountnfs.sh
# script. Scripts running before mountnfs.sh should remove the /usr/*
# entries.
PATH=/usr/sbin:/usr/bin:/sbin:/bin
export PATH
is_call_implemented() {
command -V $1 > /dev/null 2>&1
}
do_usage() {
if is_call_implemented do_reload ; then
echo "Usage: $SCRIPTNAME {start|stop|status|reload|restart|try-restart|force-reload}" >&2
else
echo "Usage: $SCRIPTNAME {start|stop|status|restart|try-restart|force-reload}" >&2
fi
}
call() {
cmd="$1"
shift
if is_call_implemented ${cmd}_override ; then
${cmd}_override "$@"
else
${cmd} "$@"
fi
}
#
# Function that starts the daemon/service
#
do_start_cmd() {
start-stop-daemon --start --quiet --oknodo \
${PIDFILE:+--pidfile ${PIDFILE}} $START_ARGS \
--startas $DAEMON --name ${COMMAND_NAME} --exec $DAEMON -- $DAEMON_ARGS
}
do_start()
{
if is_call_implemented do_start_prepare ; then
call do_start_prepare
fi
log_daemon_msg "Starting $DESC" "$NAME"
call do_start_cmd
retval=$?
case ${retval} in
0|1) vlog_end_msg 0 ;;
2) vlog_end_msg 1 ;;
esac
if is_call_implemented do_start_cleanup ; then
call do_start_cleanup
else
return ${retval}
fi
}
#
# Function that stops the daemon/service
#
do_stop_cmd() {
start-stop-daemon --stop --quiet --oknodo --retry=TERM/30/KILL/5 \
$STOP_ARGS \
${PIDFILE:+--pidfile ${PIDFILE}} --name ${COMMAND_NAME} --exec $DAEMON
RETVAL="$?"
[ "$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 \
$STOP_ARGS \
--exec $DAEMON
[ "$?" = 2 ] && return 2
# Many daemons don't delete their pidfiles when they exit.
rm -f $PIDFILE
return $RETVAL
}
do_stop()
{
if is_call_implemented do_stop_prepare ; then
call do_stop_prepare
fi
vlog_daemon_msg "Stopping $DESC" "$NAME"
call do_stop_cmd
retval=$?
case ${retval} in
0|1) vlog_end_msg 0 ;;
2) vlog_end_msg 1 ;;
esac
if is_call_implemented do_stop_cleanup ; then
call do_stop_cleanup
else
return ${retval}
fi
}
do_restart() {
if is_call_implemented do_restart_prepare ; then
call do_restart_prepare
fi
vlog_daemon_msg "Restarting $DESC" "$NAME"
call do_stop_cmd
call do_start_cmd
retval=$?
case ${retval} in
0|1) vlog_end_msg 0 ;;
2) vlog_end_msg 1 ;;
esac
if is_call_implemented do_restart_cleanup ; then
call do_restart_cleanup
else
return ${retval}
fi
}
do_force_reload() {
if is_call_implemented do_reload ; then
call do_reload
else
call do_restart
fi
}
# Enable this using
# alias do_reload=do_reload_sigusr1
do_reload_sigusr1() {
if is_call_implemented do_reload_prepare ; then
call do_reload_prepare
fi
log_daemon_msg "Reloading $DESC configuration files" "$NAME"
start-stop-daemon --oknodo --stop --signal 1 --quiet \
--pidfile "$PIDFILE" --exec "$DAEMON"
log_end_msg $?
if is_call_implemented do_reload_cleanup ; then
call do_reload_cleanup
fi
}
do_status() {
# FIXME: Does it make sense to call `status_of_proc' if PIDFILE is
# empty?
status_of_proc "$DAEMON" "$NAME" ${PIDFILE:="-p ${PIDFILE}"}
}
if [ "$DEBUG" = "true" ] ; then
set -x
fi
# Unset configuration variables to make sure that if variable is not assigned a
# value in init script, it does not use one from environment. See #822918.
unset DAEMON DAEMON_ARGS NAME COMMAND_NAME PIDFILE
SCRIPTNAME="$__init_d_script_name"
scriptbasename="$(basename "$__init_d_script_name")"
if [ "$scriptbasename" != "init-d-script" ] ; then
. "$__init_d_script_name"
else
exit 0
fi
NAME=${NAME:=$(basename $DAEMON)}
DESC=${DESC:=$NAME}
: ${COMMAND_NAME:=${NAME}}
# Do not use pid file if $PIDFILE is 'none'. Otherwise, generate from
# $NAME or use the value provided by the init.d script.
if [ none = "$PIDFILE" ] ; then
PIDFILE=
elif [ -z "$PIDFILE" ] ; then
PIDFILE=/var/run/$NAME.pid
fi
# Read configuration variable file if it is present
[ -r "/etc/default/${NAME}" ] && . "/etc/default/${NAME}"
# Exit if the package is not installed
if [ none != "$DAEMON" ] && [ ! -x "$DAEMON" ] ; then
exit 0
fi
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
if [ -t 0 ] ; then # Be verbose when called from a terminal
VERBOSE=yes
fi
case "$1" in
start)
call do_start
;;
stop)
call do_stop
;;
status)
call do_status
;;
reload)
if is_call_implemented do_reload ; then
do_reload
else
call do_usage
exit 3
fi
;;
force-reload)
call do_force_reload
;;
restart)
call do_restart
;;
try-restart)
log_daemon_msg "Trying to restart $DESC" "$NAME"
if call do_status > /dev/null 2>&1 ; then
call do_restart
log_end_msg $?
else
log_progress_msg "is not running."
log_end_msg 1
fi
;;
'')
call do_usage
exit 3
;;
*)
if is_call_implemented do_unknown ; then
call do_unknown "$1"
exit 3
else
call do_usage
exit 3
fi
;;
esac
exit $? # See https://bugs.debian.org/822753#53
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