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