xref: /qemu/scripts/qmp/qom-set (revision 9277d81f) 
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
14from __future__ import print_function
15import sys
16import os
17from qmp import QEMUMonitorProtocol
18
19cmd, args = sys.argv[0], sys.argv[1:]
20socket_path = None
21path = None
22prop = None
23value = None
24
25def usage():
26    return '''environment variables:
27    QMP_SOCKET=<path | addr:port>
28usage:
29    %s [-h] [-s <QMP socket path | addr:port>] <path>.<property> <value>
30''' % cmd
31
32def usage_error(error_msg = "unspecified error"):
33    sys.stderr.write('%s\nERROR: %s\n' % (usage(), error_msg))
34    exit(1)
35
36if 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
47if 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
53if 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]
59else:
60    usage_error("not enough arguments")
61
62srv = QEMUMonitorProtocol(socket_path)
63srv.connect()
64
65print(srv.command('qom-set', path=path, property=prop, value=value))
66