Automatically unmount CIFS before Network-Manager Ubuntu 10.04

Even though my previous article already fixed my problem (esp. on Ubuntu 10.04), browsing the net last night and found this script which is way much easier and more effective than my previous:

How to use the script:

1. Save it in your personal script folder (mine usually $HOME/bin), for now I named it umountcifs.sh

2. Make the script executable

$> chmod +x $HOME/bin/umountcifs.sh

3. Add it in your Gnome’s startup application. (System > Preferences > Startup Applications)

4. Modify the file /etc/sudoers  or you can issue

$> sudo visudo

5. Add the following line or append it line with

ALL ALL=(ALL) NOPASSWD: /etc/init.d/umountnfs.sh

6. Done.

Here’s the scripts:

#!/usr/bin/env python

#Author: Seamus Phelan

#This program runs a custom command/script just before gnome shuts
#down.  This is done the same way that gedit does it (listening for
#the 'save-yourself' event).  This is different to placing scipts
#in /etc/rc#.d/ as the script will be run before gnome exits.
#If the custom script/command fails with a non-zero return code, a
#popup dialog box will appear offering the chance to cancel logout
#
#Usage: 1 - change the command in the 'subprocess.call' in
#           function 'session_save_yourself' below to be what ever
#           you want to run at logout.
#       2 - Run this program at every gnome login (add via menu System
#           -> Preferences -> Session)
#
#

import sys
import subprocess
import datetime

import gnome
import gnome.ui
import gtk

class Namespace: pass
ns = Namespace()
ns.dialog = None

def main():
    prog = gnome.init ("gnome_save_yourself", "1.0", gnome.libgnome_module_info_get(), sys.argv, [])
    client = gnome.ui.master_client()
    #set up call back for when 'logout'/'Shutdown' button pressed
    client.connect("save-yourself", session_save_yourself)
    client.connect("shutdown-cancelled", shutdown_cancelled)

def session_save_yourself( *args):
    #Unmount those CIFS shares!
    retcode = subprocess.call("sudo /etc/init.d/umountnfs.sh", shell=True)
    if retcode != 0:
        #command failed
        show_error_dialog()
    return True

def shutdown_cancelled( *args):
    if ns.dialog != None:
        ns.dialog.destroy()
    return True

def show_error_dialog():
    ns.dialog = gtk.Dialog("There was a problem running your pre-shutdown script",
                           None,
                           gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
                           ("There was a problem running your pre-shutdown script - continue logout", gtk.RESPONSE_ACCEPT))
    if ns.test_mode == True:
        response = ns.dialog.run()
        ns.dialog.destroy()
    else:
        #when in shutdown mode gnome will only allow you to open a window using master_client().save_any_dialog()
        #It also adds the 'Cancel logout' button
        gnome.ui.master_client().save_any_dialog(ns.dialog)

#Find out if we are in test mode???
if len(sys.argv) >=2 and sys.argv[1] == "test":
    ns.test_mode = True
else:
    ns.test_mode = False

if ns.test_mode == True:
    main()
    session_save_yourself()
else:
    main()
    gtk.main()

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