#!/bin/sh
# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
# This file is public domain and comes with NO WARRANTY of any kind

# Mysql daemon start/stop script.

# Usually this is put in /etc/init.d (at least on machines SYSV R4 based
# systems) and linked to /etc/rc3.d/S99mysql and /etc/rc0.d/S01mysql.
# When this is done the mysql server will be started when the machine is
# started and shut down when the systems goes down.

# Comments to support chkconfig on RedHat Linux
# chkconfig: 2345 90 90
# description: A very fast and reliable SQL database engine.

# The following variables are only set for letting mysql.server find things.
# If you want to affect other MySQL variables, you should make your changes
# in the /etc/my.cnf or other configuration files.

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

# cbelisle@mandrakesoft : We need it to get the functions.
INITD=/etc/rc.d/init.d
. $INITD/functions

# Set some defaults
datadir=/var/lib/mysql
basedir=
pid_file=
if test -z "$basedir"
then
  basedir=/
  bindir=/usr/bin
else
  bindir="$basedir/bin"
fi
if test -z "$pid_file"
then
  pid_file=$datadir/`/bin/hostname`.pid
else
  case "$pid_file" in
    /* ) ;;
    * )  pid_file="$datadir/$pid_file" ;;
  esac
fi

mode=$1    # start or stop

parse_arguments() {
  for arg do
    case "$arg" in
      --basedir=*)  basedir=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
      --datadir=*)  datadir=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
      --pid-file=*) pid_file=`echo "$arg" | sed -e 's/^[^=]*=//'` ;;
    esac
  done
}

# Get arguments from the my.cnf file, groups [mysqld] and [mysql_server]
if test -x ./bin/my_print_defaults
then
  print_defaults="./bin/my_print_defaults"
elif test -x $bindir/my_print_defaults
then
  print_defaults="$bindir/my_print_defaults"
elif test -x $bindir/mysql_print_defaults
then
  print_defaults="$bindir/mysql_print_defaults"
else
  # Try to find basedir in /etc/my.cnf
  conf=/etc/my.cnf
  print_defaults=
  if test -r $conf
  then
    subpat='^[^=]*basedir[^=]*=\(.*\)$'
    dirs=`sed -e "/$subpat/!d" -e 's//\1/' $conf`
    for d in $dirs
    do
      d=`echo $d | sed -e 's/[ 	]//g'`
      if test -x "$d/bin/my_print_defaults"
      then
        print_defaults="$d/bin/my_print_defaults"
        break
      fi
      if test -x "$d/bin/mysql_print_defaults"
      then
        print_defaults="$d/bin/mysql_print_defaults"
        break
      fi
    done
  fi

  # Hope it's in the PATH ... but I doubt it
  test -z "$print_defaults" && print_defaults="my_print_defaults"
fi

parse_arguments `$print_defaults $defaults mysqld mysql_server`

# Safeguard (relative paths, core dumps..)
cd $basedir

case "$mode" in
  'start')
    # Start daemon

    TMPDIR=/tmp
    export TMPDIR
    TMP=/tmp
    export TMP

    if test -x $bindir/safe_mysqld
    then
      # Give extra arguments to mysqld with the my.cnf file. This script may
      # be overwritten at next upgrade.
      gprintf "Starting MySQL Server"      
      $bindir/safe_mysqld --datadir=$datadir --pid-file=$pid_file 2>&1 | logger -t safe_mysqld &
      success
      # Make lock for RedHat / SuSE
      if test -w /var/lock/subsys
      then
        touch /var/lock/subsys/mysql
      fi
      echo
    else
      gprintf "Can't execute %s/safe_mysqld\n" "$bindir"
    fi
    ;;

  'stop')
    # Stop daemon. We use a signal here to avoid having to know the
    # root password.
    unset TMPDIR
    unset TMP
    gprintf "Stopping MySQL Server"
    if test -f "$pid_file"
    then
      mysqld_pid=`cat $pid_file`
      gprintf "(pid %s)" "$mysqld_pid"
      kill $mysqld_pid
      # mysqld should remove the pid_file when it exits, so wait for it.

      sleep 1
      while [ -s $pid_file -a "$flags" != aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ]
      do
        [ -z "$flags" ] && echo "Wait for mysqld to exit\c" || echo ".\c"
        flags=a$flags
        sleep 1
      done

      if [ -s $pid_file ]
         then failure " gave up waiting!"
      elif [ -n "$flags" ]
         then success
      else
	 success
      fi

      # delete lock for RedHat / SuSE
      if test -f /var/lock/subsys/mysql
      then
        rm /var/lock/subsys/mysql
      fi
      echo
      
    else
      failure "No mysqld pid file found. Looked for %s." "$pid_file"
      echo
    fi
    ;;
  
  'status')
    status mysqld
    ;;
  
  'reload')
    $0 stop
    $0 start
    ;;

  'restart')
    $0 stop
    $0 start
    ;;

  *)
    # usage
    gprintf "usage: %s start|stop|status|reload|restart\n" "$0"
    exit 1
    ;;
esac
