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 from __future__ import print_function
  15 import sys
  16 import os
  17 from qmp import QEMUMonitorProtocol
  18
  19 cmd, args = sys.argv[0], sys.argv[1:]
  20 socket_path = None
  21 path = None
  22 prop = None
  23 value = None
  24
  25 def usage():
  26     return '''environment variables:
  27     QMP_SOCKET=<path | addr:port>
  28 usage:
  29     %s [-h] [-s <QMP socket path | addr:port>] <path>.<property> <value>
  30 ''' % cmd
  31
  32 def usage_error(error_msg = "unspecified error"):
  33     sys.stderr.write('%s\nERROR: %s\n' % (usage(), error_msg))
  34     exit(1)
  35
  36 if len(args) > 0:
  37     if args[0] == "-h":
  38         print(usage())
  39         exit(0);
  40     elif args[0] == "-s":
  41         try:
  42             socket_path = args[1]
  43         except:
  44             usage_error("missing argument: QMP socket path or address");
  45         args = args[2:]
  46
  47 if not socket_path:
  48     if 'QMP_SOCKET' in os.environ:
  49         socket_path = os.environ['QMP_SOCKET']
  50     else:
  51         usage_error("no QMP socket path or address given");
  52
  53 if len(args) > 1:
  54     try:
  55         path, prop = args[0].rsplit('.', 1)
  56     except:
  57         usage_error("invalid format for path/property/value")
  58     value = args[1]
  59 else:
  60     usage_error("not enough arguments")
  61
  62 srv = QEMUMonitorProtocol(socket_path)
  63 srv.connect()
  64
  65 print(srv.command('qom-set', path=path, property=prop, value=value))