# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# statd - Network Status Monitor daemon

# statd is used by the lock daemon to implement lock recovery when the
# NFS server machine crashes and reboots

# This is modified from Ubuntu's statd.conf

description "NSM daemon"
author "chromium-os-dev@chromium.org"

start on (started rpcbind or mounting TYPE=nfs)
stop on stopping rpcbind

expect fork
respawn

env NEED_STATD
export NEED_STATD

# Uncomment to enable console output
#console output

env DEFAULTFILE=/etc/conf.d/nfs

pre-start script
  . /etc/init/lib/nfs-check-setup

  # create the NFS directories here
  local d
  for d in rpc_pipefs v4recovery v4root ; do
    d="/var/lib/nfs/${d}"
    [ ! -d "${d}" ] && mkdir -p "${d}"
  done

  # This doesn't stop upstart from starting the daemon, sadly.
  # However, it does stop us from starting rpcbind, and if that
  # is not already running then rpc.statd will fail to start!
  [ "$NEED_STATD" = "yes" ] || { stop statd; exit 0; }

  start rpcbind || true
  status rpcbind | grep -q start/running
  exec sm-notify
end script

script
  if [ -f "$DEFAULTFILE" ]; then
      . "$DEFAULTFILE"
  fi

  # We can't use grep here since the resulting fork will make upstart
  # think we are done, and then it will be confused when grep exits
  # We also can't use pattern matching since dash doesn't support it
  # So how to check NFS_NEED_SERVICES? The environment variable
  # NEED_STATD is not transferred to this script although from the
  # Upstart documentation it looks like it should be.

  # We rely on the 'stop statd' in the pre-start script to stop the
  # daemon in this case. But upstart doesn't necessary honour that,
  # probably because it is a race condition. Starting statd by mistake
  # is probably not a big problem

  # To fix properly:
  # 1. Use bash / ash where =~ or == *pattern* or ${var/sub/rep} work
  # 2. Enhance upstart so that the pre-start script can 'stop the start'
  exec rpc.statd -L $OPTS_RPC_STATD
end script