source: trunk/packages/invirt-console-server/debian/invirt-console-server.init @ 1741

#!/bin/bash
### BEGIN INIT INFO
# Provides:          invirt-console-server
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Invirt console proxy server
# Description:       
### END INIT INFO

# Author: Invirt project <invirt@mit.edu>

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="the Invirt console server"
NAME=invirt-console-server
DAEMON=/usr/bin/invirt-consolefs
MOUNTPOINT="/consolefs"
DAEMON_ARGS="-f $MOUNTPOINT"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

gen_config()
{
    for i in /etc/conserver/invirt-hosts.cf \
             /etc/remctl/acl/invirt-console-server \
             /etc/issue.net.no_tkt \
             /etc/nss-pgsql.conf \
             ; do
        mako-render $i.mako > $i
    done
}

#
# Function that starts the daemon/service
#
do_start()
{
    # Return
    #   0 if daemon has been started
    #   1 if daemon was already running
    #   2 if daemon could not be started
    
    # Try to make sure fuse is setup
    [ -e /dev/fuse ] || modprobe fuse || return 2
    
    if cat /proc/mounts | grep " $MOUNTPOINT " >/dev/null 2>&1; then
        return 1
    fi
    
    gen_config
    
    daemon -r -O daemon.info -E daemon.err -n $NAME -- $DAEMON $DAEMON_ARGS || return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
    # 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
    
    if ! cat /proc/mounts | grep " $MOUNTPOINT " >/dev/null 2>&1; then
        return 1
    fi
    
    daemon --stop -n $NAME
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
}

do_reload()
{
    gen_config
    invoke-rc.d conserver-server reload
}

case "$1" in
  start)
    [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
    do_start
    case "$?" in
        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
        2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
    esac
    ;;
  stop)
    [ "$VERBOSE" != no ] && 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
    ;;
  reload|force-reload)
    log_daemon_msg "Reloading $DESC" "$NAME"
    do_reload
    log_end_msg $?
    ;;
  restart)
    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
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
    exit 3
    ;;
esac

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