syslog-ng.init

syslog-ng日志服务器源码

#!/bin/sh

################################################################################
#
# Program: syslog-ng init script
#
# Description:
#
#  This is an init script for syslog-ng on the HP-UX platform.
#
#  To start the service, we check if the daemon program is executable.
#  Accordingly, the preferred way to disable the service PERMANENTLY
#  is to rename the binary or remove execute permissions.
#  Ideally, you would remove the software from your system entirely.
#
#  The lowest PID of a running instance of the executable is logged to a
#  file. This PID is used for killing the daemon. This is a best guess of
#  course, it is much better to use built-in shutdown functions if the
#  daemon has those.
#
#
# Platforms (tested): HP-UX (B.10.20)
#
#
# Author: Gregor Binder <[e-mail]>
#
# Last Changed: October 10, 2000
#
#     Copyright (c) 2000 by sysfive.com GmbH, All rights reserved.
#
################################################################################

################################################################################
# configuration
#
INIT_PROG="/opt/syslog-ng/sbin/syslog-ng"   # FULL path to daemon required for fuser
INIT_OPTS=""                     # options passed to daemon
INIT_HOOK="1"                    # in case you want to use /etc/rc.config.d
                                 # comment this out and edit code below

INIT_RDIR="/var/run"

PATH=/bin:/sbin:/usr/bin:/usr/sbin

INIT_NAME=`basename "$INIT_PROG"`
INIT_RPID="${INIT_RDIR}/${INIT_NAME}.pid"

################################################################################
# init
#
INIT_RETURN=0

umask 077

# Error Handling the HP way
#
set_return () {
  x=$?
  if [ $x -ne 0 ]; then
    echo "EXIT CODE: $x"
    INIT_RETURN=1  # always 1 so that 2 can be used for other reasons
  fi
}


case "$1" in

'start_msg')

  echo "Start $INIT_NAME"
  ;;

'stop_msg')
  echo "Stopping $INIT_NAME"
  ;;

'start')

  # Remove comments to enable reading config files
  #
  #  if [ -f /etc/rc.config ] ; then
  #    . /etc/rc.config
  #  else
  #    echo "ERROR: /etc/rc.config defaults file MISSING"
  #  fi

  if [ "$INIT_HOOK" -eq 1 -a -x $INIT_PROG ] ; then
    $INIT_PROG $INIT_OPTS && echo "$INIT_NAME"
    set_return
  else
    INIT_RETURN=2
  fi  

;;

'stop')

  # Remove comments to enable reading config files
  #
  #  if [ -f /etc/rc.config ] ; then
  #    . /etc/rc.config
  #  else
  #    echo "ERROR: /etc/rc.config defaults file MISSING"
  #  fi

  # Determine PID of process(es) to stop
  #
  if [ "$INIT_HOOK" -ne 1 ] ; then
    INIT_RETURN=2

  else
    [ -r "$INIT_RPID" ] && {

      INIT_CPID=`cat "$INIT_RPID"`

        INIT_CPRG="`ps -ef | awk '$2 == '"$INIT_CPID"' { print $8 }'`"
        set_return

        [ "${INIT_CPRG:="unknown"}" = "$INIT_PROG" ] || {
          echo "process ID mismatch: [$INIT_CPID] is $INIT_CPRG"
          INIT_RETURN=1          
        }                           
                         
        [ $INIT_RETURN -eq 0 ] && kill "$INIT_CPID"
        set_return
                                                            
        [ $INIT_RETURN -eq 0 ] && rm -f "$INIT_RPID"
        set_return

        if [ $INIT_RETURN -eq 0 ]; then
          echo "$INIT_NAME stopped"
        else
          echo "Unable to stop $INIT_NAME"
        fi
    }

  fi
;;

*)
  echo "usage: $0 {start|stop}"
  INIT_RETURN=1
  ;;
esac

exit $INIT_RETURN