core-admin/qvm-tools/qvm-check

#!/usr/bin/python2
#
# The Qubes OS Project, http://www.qubes-os.org
#
# Copyright (C) 2011  Marek Marczykowski <marmarek@invisiblethingslab.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
#

from qubes.qubes import QubesVmCollection,QubesException
from optparse import OptionParser
import sys
import time

def main():
    usage = "usage: %prog [options] <vm-name>"
    parser = OptionParser (usage)

    parser.add_option ("-q", "--quiet", action="store_false", dest="verbose", default=True)
    
    (options, args) = parser.parse_args ()
    if (len (args) != 1):
        parser.error ("You must specify VM name!")

    qvm_collection = QubesVmCollection()
    qvm_collection.lock_db_for_reading()
    qvm_collection.load()
    qvm_collection.unlock_db()

    vmname = args[0]
    vm = qvm_collection.get_vm_by_name(vmname)
    if vm is None:
        if options.verbose:
            print >> sys.stdout, "A VM with the name '{0}' does not exist in the system!".format(vmname)
        exit(1)

    else:
        if options.verbose: 
            print >> sys.stdout, "A VM with the name '{0}' does exist.".format(vmname)
        exit(0)

main()