xref: /openbmc/qemu/scripts/qmp/qom-set (revision 81a23caf)
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 'QMP_SOCKET' in os.environ:
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))
65