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|
#!/bin/sh
#
# Example init.d script with LSB support.
#
# Please read this init.d carefully and modify the sections to
# adjust it to the program you want to run.
#
# Copyright (c) 2007 Javier Fernandez-Sanguino <jfs@debian.org>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License with
# the Debian operating system, in /usr/share/common-licenses/GPL; if
# not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
#
### BEGIN INIT INFO
# Provides: minisapserver
# Required-Start: $network $local_fs
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Mini SAP server
# Description: Daemon for sending SAP announcements
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/sapserver
NAME=minisapserver
DESC=minisapserver
LOGDIR=/var/log
DAEMONUSER=daemon
PIDFILE=/var/run/$NAME.pid
test -x $DAEMON || exit 0
. /lib/lsb/init-functions
# Default options, these can be overriden by the information
# at /etc/default/$NAME
DAEMON_OPTS="" # Additional options given to the server
DIETIME=10 # Time to wait for the server to die, in seconds
# If this value is set too low you might not
# let some servers to die gracefully and
# 'restart' will not work
#STARTTIME=2 # Time to wait for the server to start, in seconds
# If this value is set each time the server is
# started (on start or restart) the script will
# stall to try to determine if it is running
# If it is not set and the server takes time
# to setup a pid file the log message might
# be a false positive (says it did not start
# when it actually did)
LOGFILE=$LOGDIR/$NAME.log # Server logfile
#DAEMONUSER=minisapserver # Users to run the daemons as. If this value
# is set start-stop-daemon will chuid the server
# Include defaults if available
if [ -f /etc/default/$NAME ] ; then
. /etc/default/$NAME
fi
if [ "x$RUN" != "xyes" ] ; then
log_failure_msg "$NAME disabled, please adjust the configuration to your needs "
log_failure_msg "and then set RUN to 'yes' in /etc/default/$NAME to enable it."
exit 0
fi
# Check that the user exists (if we set a user)
# Does the user exist?
if [ -n "$DAEMONUSER" ] ; then
if getent passwd | grep -q "^$DAEMONUSER:"; then
# Obtain the uid and gid
DAEMONUID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $3}'`
DAEMONGID=`getent passwd |grep "^$DAEMONUSER:" | awk -F : '{print $4}'`
else
log_failure_msg "The user $DAEMONUSER, required to run $NAME does not exist."
exit 1
fi
fi
set -e
running_pid() {
# Check if a given process pid's cmdline matches a given name
pid=$1
name=$2
[ -z "$pid" ] && return 1
[ ! -d /proc/$pid ] && return 1
cmd=`cat /proc/$pid/cmdline | tr "\000" "\n"|head -n 1 |cut -d : -f 1`
# Is this the expected server
[ "$cmd" != "$name" ] && return 1
return 0
}
running() {
# Check if the process is running looking at /proc
# (works for all users)
# No pidfile, probably no daemon present
[ ! -f "$PIDFILE" ] && return 1
pid=`cat $PIDFILE`
running_pid $pid $DAEMON || return 1
return 0
}
start_server() {
# Start the process using the wrapper
if [ -z "$DAEMONUSER" ] ; then
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--make-pidfile --background \
--exec $DAEMON -- $DAEMON_OPTS
errcode=$?
else
start-stop-daemon --start --quiet --pidfile $PIDFILE \
--chuid $DAEMONUSER --make-pidfile --background \
--exec $DAEMON -- $DAEMON_OPTS
errcode=$?
fi
return $errcode
}
stop_server() {
# Stop the process using the wrapper
if [ -z "$DAEMONUSER" ] ; then
killproc -p $PIDFILE $DAEMON
errcode=$?
else
# if we are using a daemonuser then look for process that match
start-stop-daemon --stop --quiet --pidfile $PIDFILE \
--user $DAEMONUSER \
--exec $DAEMON
errcode=$?
fi
return $errcode
}
reload_server() {
[ ! -f "$PIDFILE" ] && return 1
pid=pidofproc $PIDFILE # This is the daemon's pid
# Send a SIGHUP
kill -1 $pid
return $?
}
force_stop() {
# Force the process to die killing it manually
[ ! -e "$PIDFILE" ] && return
if running ; then
kill -15 $pid
# Is it really dead?
sleep "$DIETIME"s
if running ; then
kill -9 $pid
sleep "$DIETIME"s
if running ; then
echo "Cannot kill $NAME (pid=$pid)!"
exit 1
fi
fi
fi
rm -f $PIDFILE
}
case "$1" in
start)
log_daemon_msg "Starting $DESC " "$NAME"
# Check if it's running first
if running ; then
log_progress_msg "apparently already running"
log_end_msg 0
exit 0
fi
if start_server ; then
# NOTE: Some servers might die some time after they start,
# this code will detect this issue if STARTTIME is set
# to a reasonable value
[ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time
if running ; then
# It's ok, the server started and is running
log_end_msg 0
else
# It is not running after we did start
log_end_msg 1
fi
else
# Either we could not start it
log_end_msg 1
fi
;;
stop)
log_daemon_msg "Stopping $DESC" "$NAME"
if running ; then
# Only stop the server if we see it running
errcode=0
stop_server || errcode=$?
log_end_msg $errcode
else
# If it's not running don't do anything
log_progress_msg "apparently not running"
log_end_msg 0
exit 0
fi
;;
force-stop)
# First try to stop gracefully the program
$0 stop
if running; then
# If it's still running try to kill it more forcefully
log_daemon_msg "Stopping (force) $DESC" "$NAME"
errcode=0
force_stop || errcode=$?
log_end_msg $errcode
fi
;;
restart|force-reload)
log_daemon_msg "Restarting $DESC" "$NAME"
errcode=0
stop_server || errcode=$?
# Wait some sensible amount, some server need this
[ -n "$DIETIME" ] && sleep $DIETIME
start_server || errcode=$?
[ -n "$STARTTIME" ] && sleep $STARTTIME
running || errcode=$?
log_end_msg $errcode
;;
status)
log_daemon_msg "Checking status of $DESC" "$NAME"
if running ; then
log_progress_msg "running"
log_end_msg 0
else
log_progress_msg "apparently not running"
log_end_msg 1
exit 1
fi
;;
# Use this if the daemon cannot reload
reload)
log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"
log_warning_msg "cannot re-read the config file (use restart)."
;;
# And this if it cann
#reload)
#
# If the daemon can reload its config files on the fly
# for example by sending it SIGHUP, do it here.
#
# If the daemon responds to changes in its config file
# directly anyway, make this a do-nothing entry.
#
# log_daemon_msg "Reloading $DESC configuration files" "$NAME"
# if running ; then
# reload_server
# if ! running ; then
# Process died after we tried to reload
# log_progress_msg "died on reload"
# log_end_msg 1
# exit 1
# fi
# else
# log_progress_msg "server is not running"
# log_end_msg 1
# exit 1
# fi
#;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
exit 1
;;
esac
exit 0
|
