scripts/qmp/qom-set

   1 #!/usr/bin/python
   2 ##
   3 # QEMU Object Model test tools
   4 #
   5 # Copyright IBM, Corp. 2011
   6 #
   7 # Authors:
   8 #  Anthony Liguori   <aliguori@us.ibm.com>
   9 #
  10 # This work is licensed under the terms of the GNU GPL, version 2 or later.  See
  11 # the COPYING file in the top-level directory.
  12 ##
  13
  14 import sys
  15 import os
  16 from qmp import QEMUMonitorProtocol
  17
  18 cmd, args = sys.argv[0], sys.argv[1:]
  19 socket_path = None
  20 path = None
  21 prop = None
  22 value = None
  23
  24 def usage():
  25     return '''environment variables:
  26     QMP_SOCKET=<path | addr:port>
  27 usage:
  28     %s [-h] [-s <QMP socket path | addr:port>] <path>.<property> <value>
  29 ''' % cmd
  30
  31 def usage_error(error_msg = "unspecified error"):
  32     sys.stderr.write('%s\nERROR: %s\n' % (usage(), error_msg))
  33     exit(1)
  34
  35 if len(args) > 0:
  36     if args[0] == "-h":
  37         print usage()
  38         exit(0);
  39     elif args[0] == "-s":
  40         try:
  41             socket_path = args[1]
  42         except:
  43             usage_error("missing argument: QMP socket path or address");
  44         args = args[2:]
  45
  46 if not socket_path:
  47     if os.environ.has_key('QMP_SOCKET'):
  48         socket_path = os.environ['QMP_SOCKET']
  49     else:
  50         usage_error("no QMP socket path or address given");
  51
  52 if len(args) > 1:
  53     try:
  54         path, prop = args[0].rsplit('.', 1)
  55     except:
  56         usage_error("invalid format for path/property/value")
  57     value = args[1]
  58 else:
  59     usage_error("not enough arguments")
  60
  61 srv = QEMUMonitorProtocol(socket_path)
  62 srv.connect()
  63
  64 print srv.command('qom-set', path=path, property=prop, value=value)