qapi/qom.json - qemu - Git at Google

 # -*- Mode: Python -*-
 #
 # This work is licensed under the terms of the GNU GPL, version 2 or later.
 # See the COPYING file in the top-level directory.

 ##
 # = QEMU Object Model (QOM)
 ##

 ##
 # @ObjectPropertyInfo:
 #
 # @name: the name of the property
 #
 # @type: the type of the property.  This will typically come in one of four
 #        forms:
 #
 #        1) A primitive type such as 'u8', 'u16', 'bool', 'str', or 'double'.
 #           These types are mapped to the appropriate JSON type.
 #
 #        2) A child type in the form 'child<subtype>' where subtype is a qdev
 #           device type name.  Child properties create the composition tree.
 #
 #        3) A link type in the form 'link<subtype>' where subtype is a qdev
 #           device type name.  Link properties form the device model graph.
 #
 # @description: if specified, the description of the property.
 #
 # Since: 1.2
 ##
 { 'struct': 'ObjectPropertyInfo',
   'data': { 'name': 'str', 'type': 'str', '*description': 'str' } }

 ##
 # @qom-list:
 #
 # This command will list any properties of a object given a path in the object
 # model.
 #
 # @path: the path within the object model.  See @qom-get for a description of
 #        this parameter.
 #
 # Returns: a list of @ObjectPropertyInfo that describe the properties of the
 #          object.
 #
 # Since: 1.2
 #
 # Example:
 #
 # -> { "execute": "qom-list",
 #      "arguments": { "path": "/chardevs" } }
 # <- { "return": [ { "name": "type", "type": "string" },
 #                  { "name": "parallel0", "type": "child<chardev-vc>" },
 #                  { "name": "serial0", "type": "child<chardev-vc>" },
 #                  { "name": "mon0", "type": "child<chardev-stdio>" } ] }
 #
 ##
 { 'command': 'qom-list',
   'data': { 'path': 'str' },
   'returns': [ 'ObjectPropertyInfo' ],
   'allow-preconfig': true }

 ##
 # @qom-get:
 #
 # This command will get a property from a object model path and return the
 # value.
 #
 # @path: The path within the object model.  There are two forms of supported
 #        paths--absolute and partial paths.
 #
 #        Absolute paths are derived from the root object and can follow child<>
 #        or link<> properties.  Since they can follow link<> properties, they
 #        can be arbitrarily long.  Absolute paths look like absolute filenames
 #        and are prefixed  with a leading slash.
 #
 #        Partial paths look like relative filenames.  They do not begin
 #        with a prefix.  The matching rules for partial paths are subtle but
 #        designed to make specifying objects easy.  At each level of the
 #        composition tree, the partial path is matched as an absolute path.
 #        The first match is not returned.  At least two matches are searched
 #        for.  A successful result is only returned if only one match is
 #        found.  If more than one match is found, a flag is return to
 #        indicate that the match was ambiguous.
 #
 # @property: The property name to read
 #
 # Returns: The property value.  The type depends on the property
 #          type. child<> and link<> properties are returned as #str
 #          pathnames.  All integer property types (u8, u16, etc) are
 #          returned as #int.
 #
 # Since: 1.2
 #
 # Example:
 #
 # 1. Use absolute path
 #
 # -> { "execute": "qom-get",
 #      "arguments": { "path": "/machine/unattached/device[0]",
 #                     "property": "hotplugged" } }
 # <- { "return": false }
 #
 # 2. Use partial path
 #
 # -> { "execute": "qom-get",
 #      "arguments": { "path": "unattached/sysbus",
 #                     "property": "type" } }
 # <- { "return": "System" }
 #
 ##
 { 'command': 'qom-get',
   'data': { 'path': 'str', 'property': 'str' },
   'returns': 'any',
   'allow-preconfig': true }

 ##
 # @qom-set:
 #
 # This command will set a property from a object model path.
 #
 # @path: see @qom-get for a description of this parameter
 #
 # @property: the property name to set
 #
 # @value: a value who's type is appropriate for the property type.  See @qom-get
 #         for a description of type mapping.
 #
 # Since: 1.2
 #
 # Example:
 #
 # -> { "execute": "qom-set",
 #      "arguments": { "path": "/machine",
 #                     "property": "graphics",
 #                     "value": false } }
 # <- { "return": {} }
 #
 ##
 { 'command': 'qom-set',
   'data': { 'path': 'str', 'property': 'str', 'value': 'any' },
   'allow-preconfig': true }

 ##
 # @ObjectTypeInfo:
 #
 # This structure describes a search result from @qom-list-types
 #
 # @name: the type name found in the search
 #
 # @abstract: the type is abstract and can't be directly instantiated.
 #            Omitted if false. (since 2.10)
 #
 # @parent: Name of parent type, if any (since 2.10)
 #
 # Since: 1.1
 ##
 { 'struct': 'ObjectTypeInfo',
   'data': { 'name': 'str', '*abstract': 'bool', '*parent': 'str' } }

 ##
 # @qom-list-types:
 #
 # This command will return a list of types given search parameters
 #
 # @implements: if specified, only return types that implement this type name
 #
 # @abstract: if true, include abstract types in the results
 #
 # Returns: a list of @ObjectTypeInfo or an empty list if no results are found
 #
 # Since: 1.1
 ##
 { 'command': 'qom-list-types',
   'data': { '*implements': 'str', '*abstract': 'bool' },
   'returns': [ 'ObjectTypeInfo' ],
   'allow-preconfig': true }

 ##
 # @qom-list-properties:
 #
 # List properties associated with a QOM object.
 #
 # @typename: the type name of an object
 #
 # Note: objects can create properties at runtime, for example to describe
 # links between different devices and/or objects. These properties
 # are not included in the output of this command.
 #
 # Returns: a list of ObjectPropertyInfo describing object properties
 #
 # Since: 2.12
 ##
 { 'command': 'qom-list-properties',
   'data': { 'typename': 'str'},
   'returns': [ 'ObjectPropertyInfo' ],
   'allow-preconfig': true }

 ##
 # @object-add:
 #
 # Create a QOM object.
 #
 # @qom-type: the class name for the object to be created
 #
 # @id: the name of the new object
 #
 # @props: a dictionary of properties to be passed to the backend
 #
 # Returns: Nothing on success
 #          Error if @qom-type is not a valid class name
 #
 # Since: 2.0
 #
 # Example:
 #
 # -> { "execute": "object-add",
 #      "arguments": { "qom-type": "rng-random", "id": "rng1",
 #                     "props": { "filename": "/dev/hwrng" } } }
 # <- { "return": {} }
 #
 ##
 { 'command': 'object-add',
   'data': {'qom-type': 'str', 'id': 'str', '*props': 'any'} }

 ##
 # @object-del:
 #
 # Remove a QOM object.
 #
 # @id: the name of the QOM object to remove
 #
 # Returns: Nothing on success
 #          Error if @id is not a valid id for a QOM object
 #
 # Since: 2.0
 #
 # Example:
 #
 # -> { "execute": "object-del", "arguments": { "id": "rng1" } }
 # <- { "return": {} }
 #
 ##
 { 'command': 'object-del', 'data': {'id': 'str'} }
	# -- Mode: Python --
	#
	# This work is licensed under the terms of the GNU GPL, version 2 or later.
	# See the COPYING file in the top-level directory.

	##
	# = QEMU Object Model (QOM)
	##

	##
	# @ObjectPropertyInfo:
	#
	# @name: the name of the property
	#
	# @type: the type of the property. This will typically come in one of four
	# forms:
	#
	# 1) A primitive type such as 'u8', 'u16', 'bool', 'str', or 'double'.
	# These types are mapped to the appropriate JSON type.
	#
	# 2) A child type in the form 'child<subtype>' where subtype is a qdev
	# device type name. Child properties create the composition tree.
	#
	# 3) A link type in the form 'link<subtype>' where subtype is a qdev
	# device type name. Link properties form the device model graph.
	#
	# @description: if specified, the description of the property.
	#
	# Since: 1.2
	##
	{ 'struct': 'ObjectPropertyInfo',
	'data': { 'name': 'str', 'type': 'str', '*description': 'str' } }

	##
	# @qom-list:
	#
	# This command will list any properties of a object given a path in the object
	# model.
	#
	# @path: the path within the object model. See @qom-get for a description of
	# this parameter.
	#
	# Returns: a list of @ObjectPropertyInfo that describe the properties of the
	# object.
	#
	# Since: 1.2
	#
	# Example:
	#
	# -> { "execute": "qom-list",
	# "arguments": { "path": "/chardevs" } }
	# <- { "return": [ { "name": "type", "type": "string" },
	# { "name": "parallel0", "type": "child<chardev-vc>" },
	# { "name": "serial0", "type": "child<chardev-vc>" },
	# { "name": "mon0", "type": "child<chardev-stdio>" } ] }
	#
	##
	{ 'command': 'qom-list',
	'data': { 'path': 'str' },
	'returns': [ 'ObjectPropertyInfo' ],
	'allow-preconfig': true }

	##
	# @qom-get:
	#
	# This command will get a property from a object model path and return the
	# value.
	#
	# @path: The path within the object model. There are two forms of supported
	# paths--absolute and partial paths.
	#
	# Absolute paths are derived from the root object and can follow child<>
	# or link<> properties. Since they can follow link<> properties, they
	# can be arbitrarily long. Absolute paths look like absolute filenames
	# and are prefixed with a leading slash.
	#
	# Partial paths look like relative filenames. They do not begin
	# with a prefix. The matching rules for partial paths are subtle but
	# designed to make specifying objects easy. At each level of the
	# composition tree, the partial path is matched as an absolute path.
	# The first match is not returned. At least two matches are searched
	# for. A successful result is only returned if only one match is
	# found. If more than one match is found, a flag is return to
	# indicate that the match was ambiguous.
	#
	# @property: The property name to read
	#
	# Returns: The property value. The type depends on the property
	# type. child<> and link<> properties are returned as #str
	# pathnames. All integer property types (u8, u16, etc) are
	# returned as #int.
	#
	# Since: 1.2
	#
	# Example:
	#
	# 1. Use absolute path
	#
	# -> { "execute": "qom-get",
	# "arguments": { "path": "/machine/unattached/device[0]",
	# "property": "hotplugged" } }
	# <- { "return": false }
	#
	# 2. Use partial path
	#
	# -> { "execute": "qom-get",
	# "arguments": { "path": "unattached/sysbus",
	# "property": "type" } }
	# <- { "return": "System" }
	#
	##
	{ 'command': 'qom-get',
	'data': { 'path': 'str', 'property': 'str' },
	'returns': 'any',
	'allow-preconfig': true }

	##
	# @qom-set:
	#
	# This command will set a property from a object model path.
	#
	# @path: see @qom-get for a description of this parameter
	#
	# @property: the property name to set
	#
	# @value: a value who's type is appropriate for the property type. See @qom-get
	# for a description of type mapping.
	#
	# Since: 1.2
	#
	# Example:
	#
	# -> { "execute": "qom-set",
	# "arguments": { "path": "/machine",
	# "property": "graphics",
	# "value": false } }
	# <- { "return": {} }
	#
	##
	{ 'command': 'qom-set',
	'data': { 'path': 'str', 'property': 'str', 'value': 'any' },
	'allow-preconfig': true }

	##
	# @ObjectTypeInfo:
	#
	# This structure describes a search result from @qom-list-types
	#
	# @name: the type name found in the search
	#
	# @abstract: the type is abstract and can't be directly instantiated.
	# Omitted if false. (since 2.10)
	#
	# @parent: Name of parent type, if any (since 2.10)
	#
	# Since: 1.1
	##
	{ 'struct': 'ObjectTypeInfo',
	'data': { 'name': 'str', 'abstract': 'bool', 'parent': 'str' } }

	##
	# @qom-list-types:
	#
	# This command will return a list of types given search parameters
	#
	# @implements: if specified, only return types that implement this type name
	#
	# @abstract: if true, include abstract types in the results
	#
	# Returns: a list of @ObjectTypeInfo or an empty list if no results are found
	#
	# Since: 1.1
	##
	{ 'command': 'qom-list-types',
	'data': { 'implements': 'str', 'abstract': 'bool' },
	'returns': [ 'ObjectTypeInfo' ],
	'allow-preconfig': true }

	##
	# @qom-list-properties:
	#
	# List properties associated with a QOM object.
	#
	# @typename: the type name of an object
	#
	# Note: objects can create properties at runtime, for example to describe
	# links between different devices and/or objects. These properties
	# are not included in the output of this command.
	#
	# Returns: a list of ObjectPropertyInfo describing object properties
	#
	# Since: 2.12
	##
	{ 'command': 'qom-list-properties',
	'data': { 'typename': 'str'},
	'returns': [ 'ObjectPropertyInfo' ],
	'allow-preconfig': true }

	##
	# @object-add:
	#
	# Create a QOM object.
	#
	# @qom-type: the class name for the object to be created
	#
	# @id: the name of the new object
	#
	# @props: a dictionary of properties to be passed to the backend
	#
	# Returns: Nothing on success
	# Error if @qom-type is not a valid class name
	#
	# Since: 2.0
	#
	# Example:
	#
	# -> { "execute": "object-add",
	# "arguments": { "qom-type": "rng-random", "id": "rng1",
	# "props": { "filename": "/dev/hwrng" } } }
	# <- { "return": {} }
	#
	##
	{ 'command': 'object-add',
	'data': {'qom-type': 'str', 'id': 'str', '*props': 'any'} }

	##
	# @object-del:
	#
	# Remove a QOM object.
	#
	# @id: the name of the QOM object to remove
	#
	# Returns: Nothing on success
	# Error if @id is not a valid id for a QOM object
	#
	# Since: 2.0
	#
	# Example:
	#
	# -> { "execute": "object-del", "arguments": { "id": "rng1" } }
	# <- { "return": {} }
	#
	##
	{ 'command': 'object-del', 'data': {'id': 'str'} }