qemu/qapi/common.json

# -*- Mode: Python -*-

##
# = QAPI common definitions
##

##
# @QapiErrorClass:
#
# QEMU error classes
#
# @GenericError: this is used for errors that don't require a specific error
#                class. This should be the default case for most errors
#
# @CommandNotFound: the requested command has not been found
#
# @DeviceNotActive: a device has failed to be become active
#
# @DeviceNotFound: the requested device has not been found
#
# @KVMMissingCap: the requested operation can't be fulfilled because a
#                 required KVM capability is missing
#
# Since: 1.2
##
{ 'enum': 'QapiErrorClass',
  # Keep this in sync with ErrorClass in error.h
  'data': [ 'GenericError', 'CommandNotFound',
            'DeviceNotActive', 'DeviceNotFound', 'KVMMissingCap' ] }

##
# @VersionTriple:
#
# A three-part version number.
#
# @major:  The major version number.
#
# @minor:  The minor version number.
#
# @micro:  The micro version number.
#
# Since: 2.4
##
{ 'struct': 'VersionTriple',
  'data': {'major': 'int', 'minor': 'int', 'micro': 'int'} }


##
# @VersionInfo:
#
# A description of QEMU's version.
#
# @qemu:        The version of QEMU.  By current convention, a micro
#               version of 50 signifies a development branch.  A micro version
#               greater than or equal to 90 signifies a release candidate for
#               the next minor version.  A micro version of less than 50
#               signifies a stable release.
#
# @package:     QEMU will always set this field to an empty string.  Downstream
#               versions of QEMU should set this to a non-empty string.  The
#               exact format depends on the downstream however it highly
#               recommended that a unique name is used.
#
# Since: 0.14.0
##
{ 'struct': 'VersionInfo',
  'data': {'qemu': 'VersionTriple', 'package': 'str'} }

##
# @query-version:
#
# Returns the current version of QEMU.
#
# Returns:  A @VersionInfo object describing the current version of QEMU.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-version" }
# <- {
#       "return":{
#          "qemu":{
#             "major":0,
#             "minor":11,
#             "micro":5
#          },
#          "package":""
#       }
#    }
#
##
{ 'command': 'query-version', 'returns': 'VersionInfo' }

##
# @CommandInfo:
#
# Information about a QMP command
#
# @name: The command name
#
# Since: 0.14.0
##
{ 'struct': 'CommandInfo', 'data': {'name': 'str'} }

##
# @query-commands:
#
# Return a list of supported QMP commands by this server
#
# Returns: A list of @CommandInfo for all supported commands
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-commands" }
# <- {
#      "return":[
#         {
#            "name":"query-balloon"
#         },
#         {
#            "name":"system_powerdown"
#         }
#      ]
#    }
#
# Note: This example has been shortened as the real response is too long.
#
##
{ 'command': 'query-commands', 'returns': ['CommandInfo'] }

##
# @OnOffAuto:
#
# An enumeration of three options: on, off, and auto
#
# @auto: QEMU selects the value between on and off
#
# @on: Enabled
#
# @off: Disabled
#
# Since: 2.2
##
{ 'enum': 'OnOffAuto',
  'data': [ 'auto', 'on', 'off' ] }

##
# @OnOffSplit:
#
# An enumeration of three values: on, off, and split
#
# @on: Enabled
#
# @off: Disabled
#
# @split: Mixed
#
# Since: 2.6
##
{ 'enum': 'OnOffSplit',
  'data': [ 'on', 'off', 'split' ] }

##
# @String:
#
# A fat type wrapping 'str', to be embedded in lists.
#
# Since: 1.2
##
{ 'struct': 'String',
  'data': {
    'str': 'str' } }

##
# @StrOrNull:
#
# This is a string value or the explicit lack of a string (null
# pointer in C).  Intended for cases when 'optional absent' already
# has a different meaning.
#
# @s: the string value
# @n: no string value
#
# Since: 2.10
##
{ 'alternate': 'StrOrNull',
  'data': { 's': 'str',
            'n': 'null' } }