256 lines
7 KiB
Python
256 lines
7 KiB
Python
# -*- Mode: Python -*-
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# vim: filetype=python
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or later.
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# See the COPYING file in the top-level directory.
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##
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# = QEMU Object Model (QOM)
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##
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##
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# @ObjectPropertyInfo:
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#
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# @name: the name of the property
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#
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# @type: the type of the property. This will typically come in one of four
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# forms:
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#
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# 1) A primitive type such as 'u8', 'u16', 'bool', 'str', or 'double'.
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# These types are mapped to the appropriate JSON type.
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#
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# 2) A child type in the form 'child<subtype>' where subtype is a qdev
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# device type name. Child properties create the composition tree.
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#
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# 3) A link type in the form 'link<subtype>' where subtype is a qdev
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# device type name. Link properties form the device model graph.
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#
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# @description: if specified, the description of the property.
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#
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# @default-value: the default value, if any (since 5.0)
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#
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# Since: 1.2
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##
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{ 'struct': 'ObjectPropertyInfo',
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'data': { 'name': 'str',
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'type': 'str',
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'*description': 'str',
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'*default-value': 'any' } }
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##
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# @qom-list:
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#
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# This command will list any properties of a object given a path in the object
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# model.
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#
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# @path: the path within the object model. See @qom-get for a description of
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# this parameter.
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#
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# Returns: a list of @ObjectPropertyInfo that describe the properties of the
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# object.
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#
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# Since: 1.2
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#
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# Example:
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#
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# -> { "execute": "qom-list",
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# "arguments": { "path": "/chardevs" } }
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# <- { "return": [ { "name": "type", "type": "string" },
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# { "name": "parallel0", "type": "child<chardev-vc>" },
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# { "name": "serial0", "type": "child<chardev-vc>" },
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# { "name": "mon0", "type": "child<chardev-stdio>" } ] }
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#
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##
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{ 'command': 'qom-list',
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'data': { 'path': 'str' },
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'returns': [ 'ObjectPropertyInfo' ],
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'allow-preconfig': true }
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##
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# @qom-get:
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#
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# This command will get a property from a object model path and return the
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# value.
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#
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# @path: The path within the object model. There are two forms of supported
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# paths--absolute and partial paths.
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#
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# Absolute paths are derived from the root object and can follow child<>
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# or link<> properties. Since they can follow link<> properties, they
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# can be arbitrarily long. Absolute paths look like absolute filenames
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# and are prefixed with a leading slash.
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#
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# Partial paths look like relative filenames. They do not begin
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# with a prefix. The matching rules for partial paths are subtle but
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# designed to make specifying objects easy. At each level of the
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# composition tree, the partial path is matched as an absolute path.
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# The first match is not returned. At least two matches are searched
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# for. A successful result is only returned if only one match is
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# found. If more than one match is found, a flag is return to
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# indicate that the match was ambiguous.
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#
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# @property: The property name to read
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#
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# Returns: The property value. The type depends on the property
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# type. child<> and link<> properties are returned as #str
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# pathnames. All integer property types (u8, u16, etc) are
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# returned as #int.
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#
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# Since: 1.2
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#
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# Example:
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#
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# 1. Use absolute path
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#
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# -> { "execute": "qom-get",
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# "arguments": { "path": "/machine/unattached/device[0]",
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# "property": "hotplugged" } }
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# <- { "return": false }
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#
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# 2. Use partial path
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#
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# -> { "execute": "qom-get",
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# "arguments": { "path": "unattached/sysbus",
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# "property": "type" } }
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# <- { "return": "System" }
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#
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##
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{ 'command': 'qom-get',
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'data': { 'path': 'str', 'property': 'str' },
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'returns': 'any',
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'allow-preconfig': true }
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##
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# @qom-set:
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#
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# This command will set a property from a object model path.
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#
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# @path: see @qom-get for a description of this parameter
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#
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# @property: the property name to set
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#
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# @value: a value who's type is appropriate for the property type. See @qom-get
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# for a description of type mapping.
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#
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# Since: 1.2
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#
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# Example:
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#
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# -> { "execute": "qom-set",
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# "arguments": { "path": "/machine",
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# "property": "graphics",
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# "value": false } }
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# <- { "return": {} }
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#
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##
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{ 'command': 'qom-set',
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'data': { 'path': 'str', 'property': 'str', 'value': 'any' },
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'allow-preconfig': true }
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##
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# @ObjectTypeInfo:
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#
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# This structure describes a search result from @qom-list-types
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#
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# @name: the type name found in the search
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#
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# @abstract: the type is abstract and can't be directly instantiated.
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# Omitted if false. (since 2.10)
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#
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# @parent: Name of parent type, if any (since 2.10)
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#
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# Since: 1.1
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##
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{ 'struct': 'ObjectTypeInfo',
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'data': { 'name': 'str', '*abstract': 'bool', '*parent': 'str' } }
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##
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# @qom-list-types:
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#
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# This command will return a list of types given search parameters
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#
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# @implements: if specified, only return types that implement this type name
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#
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# @abstract: if true, include abstract types in the results
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#
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# Returns: a list of @ObjectTypeInfo or an empty list if no results are found
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#
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# Since: 1.1
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##
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{ 'command': 'qom-list-types',
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'data': { '*implements': 'str', '*abstract': 'bool' },
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'returns': [ 'ObjectTypeInfo' ],
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'allow-preconfig': true }
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##
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# @qom-list-properties:
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#
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# List properties associated with a QOM object.
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#
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# @typename: the type name of an object
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#
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# Note: objects can create properties at runtime, for example to describe
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# links between different devices and/or objects. These properties
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# are not included in the output of this command.
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#
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# Returns: a list of ObjectPropertyInfo describing object properties
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#
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# Since: 2.12
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##
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{ 'command': 'qom-list-properties',
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'data': { 'typename': 'str'},
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'returns': [ 'ObjectPropertyInfo' ],
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'allow-preconfig': true }
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##
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# @object-add:
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#
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# Create a QOM object.
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#
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# @qom-type: the class name for the object to be created
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#
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# @id: the name of the new object
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#
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# @props: a dictionary of properties to be passed to the backend. Deprecated
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# since 5.0, specify the properties on the top level instead. It is an
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# error to specify the same option both on the top level and in @props.
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#
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# Additional arguments depend on qom-type and are passed to the backend
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# unchanged.
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#
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# Returns: Nothing on success
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# Error if @qom-type is not a valid class name
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#
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# Since: 2.0
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#
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# Example:
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#
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# -> { "execute": "object-add",
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# "arguments": { "qom-type": "rng-random", "id": "rng1",
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# "filename": "/dev/hwrng" } }
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# <- { "return": {} }
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#
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##
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{ 'command': 'object-add',
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'data': {'qom-type': 'str', 'id': 'str', '*props': 'any'},
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'gen': false } # so we can get the additional arguments
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##
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# @object-del:
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#
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# Remove a QOM object.
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#
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# @id: the name of the QOM object to remove
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#
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# Returns: Nothing on success
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# Error if @id is not a valid id for a QOM object
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#
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# Since: 2.0
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#
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# Example:
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#
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# -> { "execute": "object-del", "arguments": { "id": "rng1" } }
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# <- { "return": {} }
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#
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##
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{ 'command': 'object-del', 'data': {'id': 'str'} }
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