qapi/misc.json

# -*- Mode: Python -*-
#

##
# = Miscellanea
##

{ 'include': 'common.json' }

##
# @qmp_capabilities:
#
# Enable QMP capabilities.
#
# Arguments:
#
# @enable:   An optional list of QMPCapability values to enable.  The
#            client must not enable any capability that is not
#            mentioned in the QMP greeting message.  If the field is not
#            provided, it means no QMP capabilities will be enabled.
#            (since 2.12)
#
# Example:
#
# -> { "execute": "qmp_capabilities",
#      "arguments": { "enable": [ "oob" ] } }
# <- { "return": {} }
#
# Notes: This command is valid exactly when first connecting: it must be
# issued before any other command will be accepted, and will fail once the
# monitor is accepting other commands. (see qemu docs/interop/qmp-spec.txt)
#
# The QMP client needs to explicitly enable QMP capabilities, otherwise
# all the QMP capabilities will be turned off by default.
#
# Since: 0.13
#
##
{ 'command': 'qmp_capabilities',
  'data': { '*enable': [ 'QMPCapability' ] },
  'allow-preconfig': true }

##
# @QMPCapability:
#
# Enumeration of capabilities to be advertised during initial client
# connection, used for agreeing on particular QMP extension behaviors.
#
# @oob:   QMP ability to support out-of-band requests.
#         (Please refer to qmp-spec.txt for more information on OOB)
#
# Since: 2.12
#
##
{ 'enum': 'QMPCapability',
  'data': [ 'oob' ] }

##
# @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',
  'allow-preconfig': true }

##
# @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'],
  'allow-preconfig': true }

##
# @LostTickPolicy:
#
# Policy for handling lost ticks in timer devices.
#
# @discard: throw away the missed tick(s) and continue with future injection
#           normally.  Guest time may be delayed, unless the OS has explicit
#           handling of lost ticks
#
# @delay: continue to deliver ticks at the normal rate.  Guest time will be
#         delayed due to the late tick
#
# @slew: deliver ticks at a higher rate to catch up with the missed tick. The
#        guest time should not be delayed once catchup is complete.
#
# Since: 2.0
##
{ 'enum': 'LostTickPolicy',
  'data': ['discard', 'delay', 'slew' ] }

##
# @add_client:
#
# Allow client connections for VNC, Spice and socket based
# character devices to be passed in to QEMU via SCM_RIGHTS.
#
# @protocol: protocol name. Valid names are "vnc", "spice" or the
#            name of a character device (eg. from -chardev id=XXXX)
#
# @fdname: file descriptor name previously passed via 'getfd' command
#
# @skipauth: whether to skip authentication. Only applies
#            to "vnc" and "spice" protocols
#
# @tls: whether to perform TLS. Only applies to the "spice"
#       protocol
#
# Returns: nothing on success.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "add_client", "arguments": { "protocol": "vnc",
#                                              "fdname": "myclient" } }
# <- { "return": {} }
#
##
{ 'command': 'add_client',
  'data': { 'protocol': 'str', 'fdname': 'str', '*skipauth': 'bool',
            '*tls': 'bool' } }

##
# @NameInfo:
#
# Guest name information.
#
# @name: The name of the guest
#
# Since: 0.14.0
##
{ 'struct': 'NameInfo', 'data': {'*name': 'str'} }

##
# @query-name:
#
# Return the name information of a guest.
#
# Returns: @NameInfo of the guest
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-name" }
# <- { "return": { "name": "qemu-name" } }
#
##
{ 'command': 'query-name', 'returns': 'NameInfo', 'allow-preconfig': true }

##
# @KvmInfo:
#
# Information about support for KVM acceleration
#
# @enabled: true if KVM acceleration is active
#
# @present: true if KVM acceleration is built into this executable
#
# Since: 0.14.0
##
{ 'struct': 'KvmInfo', 'data': {'enabled': 'bool', 'present': 'bool'} }

##
# @query-kvm:
#
# Returns information about KVM acceleration
#
# Returns: @KvmInfo
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-kvm" }
# <- { "return": { "enabled": true, "present": true } }
#
##
{ 'command': 'query-kvm', 'returns': 'KvmInfo' }

##
# @UuidInfo:
#
# Guest UUID information (Universally Unique Identifier).
#
# @UUID: the UUID of the guest
#
# Since: 0.14.0
#
# Notes: If no UUID was specified for the guest, a null UUID is returned.
##
{ 'struct': 'UuidInfo', 'data': {'UUID': 'str'} }

##
# @query-uuid:
#
# Query the guest UUID information.
#
# Returns: The @UuidInfo for the guest
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-uuid" }
# <- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
#
##
{ 'command': 'query-uuid', 'returns': 'UuidInfo', 'allow-preconfig': true }

##
# @EventInfo:
#
# Information about a QMP event
#
# @name: The event name
#
# Since: 1.2.0
##
{ 'struct': 'EventInfo', 'data': {'name': 'str'} }

##
# @query-events:
#
# Return information on QMP events.
#
# Returns: A list of @EventInfo.
#
# Since: 1.2.0
#
# Note: This command is deprecated, because its output doesn't reflect
# compile-time configuration.  Use query-qmp-schema instead.
#
# Example:
#
# -> { "execute": "query-events" }
# <- {
#      "return": [
#          {
#             "name":"SHUTDOWN"
#          },
#          {
#             "name":"RESET"
#          }
#       ]
#    }
#
# Note: This example has been shortened as the real response is too long.
#
##
{ 'command': 'query-events', 'returns': ['EventInfo'] }

##
# @IOThreadInfo:
#
# Information about an iothread
#
# @id: the identifier of the iothread
#
# @thread-id: ID of the underlying host thread
#
# @poll-max-ns: maximum polling time in ns, 0 means polling is disabled
#               (since 2.9)
#
# @poll-grow: how many ns will be added to polling time, 0 means that it's not
#             configured (since 2.9)
#
# @poll-shrink: how many ns will be removed from polling time, 0 means that
#               it's not configured (since 2.9)
#
# Since: 2.0
##
{ 'struct': 'IOThreadInfo',
  'data': {'id': 'str',
           'thread-id': 'int',
           'poll-max-ns': 'int',
           'poll-grow': 'int',
           'poll-shrink': 'int' } }

##
# @query-iothreads:
#
# Returns a list of information about each iothread.
#
# Note: this list excludes the QEMU main loop thread, which is not declared
# using the -object iothread command-line option.  It is always the main thread
# of the process.
#
# Returns: a list of @IOThreadInfo for each iothread
#
# Since: 2.0
#
# Example:
#
# -> { "execute": "query-iothreads" }
# <- { "return": [
#          {
#             "id":"iothread0",
#             "thread-id":3134
#          },
#          {
#             "id":"iothread1",
#             "thread-id":3135
#          }
#       ]
#    }
#
##
{ 'command': 'query-iothreads', 'returns': ['IOThreadInfo'],
  'allow-preconfig': true }

##
# @BalloonInfo:
#
# Information about the guest balloon device.
#
# @actual: the number of bytes the balloon currently contains
#
# Since: 0.14.0
#
##
{ 'struct': 'BalloonInfo', 'data': {'actual': 'int' } }

##
# @query-balloon:
#
# Return information about the balloon device.
#
# Returns: @BalloonInfo on success
#
#          If the balloon driver is enabled but not functional because the KVM
#          kernel module cannot support it, KvmMissingCap
#
#          If no balloon device is present, DeviceNotActive
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-balloon" }
# <- { "return": {
#          "actual": 1073741824,
#       }
#    }
#
##
{ 'command': 'query-balloon', 'returns': 'BalloonInfo' }

##
# @BALLOON_CHANGE:
#
# Emitted when the guest changes the actual BALLOON level. This value is
# equivalent to the @actual field return by the 'query-balloon' command
#
# @actual: actual level of the guest memory balloon in bytes
#
# Note: this event is rate-limited.
#
# Since: 1.2
#
# Example:
#
# <- { "event": "BALLOON_CHANGE",
#      "data": { "actual": 944766976 },
#      "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
#
##
{ 'event': 'BALLOON_CHANGE',
  'data': { 'actual': 'int' } }

##
# @PciMemoryRange:
#
# A PCI device memory region
#
# @base: the starting address (guest physical)
#
# @limit: the ending address (guest physical)
#
# Since: 0.14.0
##
{ 'struct': 'PciMemoryRange', 'data': {'base': 'int', 'limit': 'int'} }

##
# @PciMemoryRegion:
#
# Information about a PCI device I/O region.
#
# @bar: the index of the Base Address Register for this region
#
# @type: 'io' if the region is a PIO region
#        'memory' if the region is a MMIO region
#
# @size: memory size
#
# @prefetch: if @type is 'memory', true if the memory is prefetchable
#
# @mem_type_64: if @type is 'memory', true if the BAR is 64-bit
#
# Since: 0.14.0
##
{ 'struct': 'PciMemoryRegion',
  'data': {'bar': 'int', 'type': 'str', 'address': 'int', 'size': 'int',
           '*prefetch': 'bool', '*mem_type_64': 'bool' } }

##
# @PciBusInfo:
#
# Information about a bus of a PCI Bridge device
#
# @number: primary bus interface number.  This should be the number of the
#          bus the device resides on.
#
# @secondary: secondary bus interface number.  This is the number of the
#             main bus for the bridge
#
# @subordinate: This is the highest number bus that resides below the
#               bridge.
#
# @io_range: The PIO range for all devices on this bridge
#
# @memory_range: The MMIO range for all devices on this bridge
#
# @prefetchable_range: The range of prefetchable MMIO for all devices on
#                      this bridge
#
# Since: 2.4
##
{ 'struct': 'PciBusInfo',
  'data': {'number': 'int', 'secondary': 'int', 'subordinate': 'int',
           'io_range': 'PciMemoryRange',
           'memory_range': 'PciMemoryRange',
           'prefetchable_range': 'PciMemoryRange' } }

##
# @PciBridgeInfo:
#
# Information about a PCI Bridge device
#
# @bus: information about the bus the device resides on
#
# @devices: a list of @PciDeviceInfo for each device on this bridge
#
# Since: 0.14.0
##
{ 'struct': 'PciBridgeInfo',
  'data': {'bus': 'PciBusInfo', '*devices': ['PciDeviceInfo']} }

##
# @PciDeviceClass:
#
# Information about the Class of a PCI device
#
# @desc: a string description of the device's class
#
# @class: the class code of the device
#
# Since: 2.4
##
{ 'struct': 'PciDeviceClass',
  'data': {'*desc': 'str', 'class': 'int'} }

##
# @PciDeviceId:
#
# Information about the Id of a PCI device
#
# @device: the PCI device id
#
# @vendor: the PCI vendor id
#
# @subsystem: the PCI subsystem id (since 3.1)
#
# @subsystem-vendor: the PCI subsystem vendor id (since 3.1)
#
# Since: 2.4
##
{ 'struct': 'PciDeviceId',
  'data': {'device': 'int', 'vendor': 'int', '*subsystem': 'int',
            '*subsystem-vendor': 'int'} }

##
# @PciDeviceInfo:
#
# Information about a PCI device
#
# @bus: the bus number of the device
#
# @slot: the slot the device is located in
#
# @function: the function of the slot used by the device
#
# @class_info: the class of the device
#
# @id: the PCI device id
#
# @irq: if an IRQ is assigned to the device, the IRQ number
#
# @qdev_id: the device name of the PCI device
#
# @pci_bridge: if the device is a PCI bridge, the bridge information
#
# @regions: a list of the PCI I/O regions associated with the device
#
# Notes: the contents of @class_info.desc are not stable and should only be
#        treated as informational.
#
# Since: 0.14.0
##
{ 'struct': 'PciDeviceInfo',
  'data': {'bus': 'int', 'slot': 'int', 'function': 'int',
           'class_info': 'PciDeviceClass', 'id': 'PciDeviceId',
           '*irq': 'int', 'qdev_id': 'str', '*pci_bridge': 'PciBridgeInfo',
           'regions': ['PciMemoryRegion']} }

##
# @PciInfo:
#
# Information about a PCI bus
#
# @bus: the bus index
#
# @devices: a list of devices on this bus
#
# Since: 0.14.0
##
{ 'struct': 'PciInfo', 'data': {'bus': 'int', 'devices': ['PciDeviceInfo']} }

##
# @query-pci:
#
# Return information about the PCI bus topology of the guest.
#
# Returns: a list of @PciInfo for each PCI bus. Each bus is
# represented by a json-object, which has a key with a json-array of
# all PCI devices attached to it. Each device is represented by a
# json-object.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "query-pci" }
# <- { "return": [
#          {
#             "bus": 0,
#             "devices": [
#                {
#                   "bus": 0,
#                   "qdev_id": "",
#                   "slot": 0,
#                   "class_info": {
#                      "class": 1536,
#                      "desc": "Host bridge"
#                   },
#                   "id": {
#                      "device": 32902,
#                      "vendor": 4663
#                   },
#                   "function": 0,
#                   "regions": [
#                   ]
#                },
#                {
#                   "bus": 0,
#                   "qdev_id": "",
#                   "slot": 1,
#                   "class_info": {
#                      "class": 1537,
#                      "desc": "ISA bridge"
#                   },
#                   "id": {
#                      "device": 32902,
#                      "vendor": 28672
#                   },
#                   "function": 0,
#                   "regions": [
#                   ]
#                },
#                {
#                   "bus": 0,
#                   "qdev_id": "",
#                   "slot": 1,
#                   "class_info": {
#                      "class": 257,
#                      "desc": "IDE controller"
#                   },
#                   "id": {
#                      "device": 32902,
#                      "vendor": 28688
#                   },
#                   "function": 1,
#                   "regions": [
#                      {
#                         "bar": 4,
#                         "size": 16,
#                         "address": 49152,
#                         "type": "io"
#                      }
#                   ]
#                },
#                {
#                   "bus": 0,
#                   "qdev_id": "",
#                   "slot": 2,
#                   "class_info": {
#                      "class": 768,
#                      "desc": "VGA controller"
#                   },
#                   "id": {
#                      "device": 4115,
#                      "vendor": 184
#                   },
#                   "function": 0,
#                   "regions": [
#                      {
#                         "prefetch": true,
#                         "mem_type_64": false,
#                         "bar": 0,
#                         "size": 33554432,
#                         "address": 4026531840,
#                         "type": "memory"
#                      },
#                      {
#                         "prefetch": false,
#                         "mem_type_64": false,
#                         "bar": 1,
#                         "size": 4096,
#                         "address": 4060086272,
#                         "type": "memory"
#                      },
#                      {
#                         "prefetch": false,
#                         "mem_type_64": false,
#                         "bar": 6,
#                         "size": 65536,
#                         "address": -1,
#                         "type": "memory"
#                      }
#                   ]
#                },
#                {
#                   "bus": 0,
#                   "qdev_id": "",
#                   "irq": 11,
#                   "slot": 4,
#                   "class_info": {
#                      "class": 1280,
#                      "desc": "RAM controller"
#                   },
#                   "id": {
#                      "device": 6900,
#                      "vendor": 4098
#                   },
#                   "function": 0,
#                   "regions": [
#                      {
#                         "bar": 0,
#                         "size": 32,
#                         "address": 49280,
#                         "type": "io"
#                      }
#                   ]
#                }
#             ]
#          }
#       ]
#    }
#
# Note: This example has been shortened as the real response is too long.
#
##
{ 'command': 'query-pci', 'returns': ['PciInfo'] }

##
# @quit:
#
# This command will cause the QEMU process to exit gracefully.  While every
# attempt is made to send the QMP response before terminating, this is not
# guaranteed.  When using this interface, a premature EOF would not be
# unexpected.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "quit" }
# <- { "return": {} }
##
{ 'command': 'quit' }

##
# @stop:
#
# Stop all guest VCPU execution.
#
# Since:  0.14.0
#
# Notes:  This function will succeed even if the guest is already in the stopped
#         state.  In "inmigrate" state, it will ensure that the guest
#         remains paused once migration finishes, as if the -S option was
#         passed on the command line.
#
# Example:
#
# -> { "execute": "stop" }
# <- { "return": {} }
#
##
{ 'command': 'stop' }

##
# @system_reset:
#
# Performs a hard reset of a guest.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "system_reset" }
# <- { "return": {} }
#
##
{ 'command': 'system_reset' }

##
# @system_powerdown:
#
# Requests that a guest perform a powerdown operation.
#
# Since: 0.14.0
#
# Notes: A guest may or may not respond to this command.  This command
#        returning does not indicate that a guest has accepted the request or
#        that it has shut down.  Many guests will respond to this command by
#        prompting the user in some way.
# Example:
#
# -> { "execute": "system_powerdown" }
# <- { "return": {} }
#
##
{ 'command': 'system_powerdown' }

##
# @memsave:
#
# Save a portion of guest memory to a file.
#
# @val: the virtual address of the guest to start from
#
# @size: the size of memory region to save
#
# @filename: the file to save the memory to as binary data
#
# @cpu-index: the index of the virtual CPU to use for translating the
#                       virtual address (defaults to CPU 0)
#
# Returns: Nothing on success
#
# Since: 0.14.0
#
# Notes: Errors were not reliably returned until 1.1
#
# Example:
#
# -> { "execute": "memsave",
#      "arguments": { "val": 10,
#                     "size": 100,
#                     "filename": "/tmp/virtual-mem-dump" } }
# <- { "return": {} }
#
##
{ 'command': 'memsave',
  'data': {'val': 'int', 'size': 'int', 'filename': 'str', '*cpu-index': 'int'} }

##
# @pmemsave:
#
# Save a portion of guest physical memory to a file.
#
# @val: the physical address of the guest to start from
#
# @size: the size of memory region to save
#
# @filename: the file to save the memory to as binary data
#
# Returns: Nothing on success
#
# Since: 0.14.0
#
# Notes: Errors were not reliably returned until 1.1
#
# Example:
#
# -> { "execute": "pmemsave",
#      "arguments": { "val": 10,
#                     "size": 100,
#                     "filename": "/tmp/physical-mem-dump" } }
# <- { "return": {} }
#
##
{ 'command': 'pmemsave',
  'data': {'val': 'int', 'size': 'int', 'filename': 'str'} }

##
# @cont:
#
# Resume guest VCPU execution.
#
# Since:  0.14.0
#
# Returns:  If successful, nothing
#
# Notes:  This command will succeed if the guest is currently running.  It
#         will also succeed if the guest is in the "inmigrate" state; in
#         this case, the effect of the command is to make sure the guest
#         starts once migration finishes, removing the effect of the -S
#         command line option if it was passed.
#
# Example:
#
# -> { "execute": "cont" }
# <- { "return": {} }
#
##
{ 'command': 'cont' }

##
# @x-exit-preconfig:
#
# Exit from "preconfig" state
#
# This command makes QEMU exit the preconfig state and proceed with
# VM initialization using configuration data provided on the command line
# and via the QMP monitor during the preconfig state. The command is only
# available during the preconfig state (i.e. when the --preconfig command
# line option was in use).
#
# Since 3.0
#
# Returns: nothing
#
# Example:
#
# -> { "execute": "x-exit-preconfig" }
# <- { "return": {} }
#
##
{ 'command': 'x-exit-preconfig', 'allow-preconfig': true }

##
# @system_wakeup:
#
# Wake up guest from suspend. If the guest has wake-up from suspend
# support enabled (wakeup-suspend-support flag from
# query-current-machine), wake-up guest from suspend if the guest is
# in SUSPENDED state. Return an error otherwise.
#
# Since:  1.1
#
# Returns:  nothing.
#
# Note: prior to 4.0, this command does nothing in case the guest
# isn't suspended.
#
# Example:
#
# -> { "execute": "system_wakeup" }
# <- { "return": {} }
#
##
{ 'command': 'system_wakeup' }

##
# @inject-nmi:
#
# Injects a Non-Maskable Interrupt into the default CPU (x86/s390) or all CPUs (ppc64).
# The command fails when the guest doesn't support injecting.
#
# Returns:  If successful, nothing
#
# Since:  0.14.0
#
# Note: prior to 2.1, this command was only supported for x86 and s390 VMs
#
# Example:
#
# -> { "execute": "inject-nmi" }
# <- { "return": {} }
#
##
{ 'command': 'inject-nmi' }

##
# @balloon:
#
# Request the balloon driver to change its balloon size.
#
# @value: the target size of the balloon in bytes
#
# Returns: Nothing on success
#          If the balloon driver is enabled but not functional because the KVM
#            kernel module cannot support it, KvmMissingCap
#          If no balloon device is present, DeviceNotActive
#
# Notes: This command just issues a request to the guest.  When it returns,
#        the balloon size may not have changed.  A guest can change the balloon
#        size independent of this command.
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "balloon", "arguments": { "value": 536870912 } }
# <- { "return": {} }
#
##
{ 'command': 'balloon', 'data': {'value': 'int'} }

##
# @human-monitor-command:
#
# Execute a command on the human monitor and return the output.
#
# @command-line: the command to execute in the human monitor
#
# @cpu-index: The CPU to use for commands that require an implicit CPU
#
# Returns: the output of the command as a string
#
# Since: 0.14.0
#
# Notes: This command only exists as a stop-gap.  Its use is highly
#        discouraged.  The semantics of this command are not
#        guaranteed: this means that command names, arguments and
#        responses can change or be removed at ANY time.  Applications
#        that rely on long term stability guarantees should NOT
#        use this command.
#
#        Known limitations:
#
#        * This command is stateless, this means that commands that depend
#          on state information (such as getfd) might not work
#
#        * Commands that prompt the user for data don't currently work
#
# Example:
#
# -> { "execute": "human-monitor-command",
#      "arguments": { "command-line": "info kvm" } }
# <- { "return": "kvm support: enabled\r\n" }
#
##
{ 'command': 'human-monitor-command',
  'data': {'command-line': 'str', '*cpu-index': 'int'},
  'returns': 'str' }

##
# @change:
#
# This command is multiple commands multiplexed together.
#
# @device: This is normally the name of a block device but it may also be 'vnc'.
#          when it's 'vnc', then sub command depends on @target
#
# @target: If @device is a block device, then this is the new filename.
#          If @device is 'vnc', then if the value 'password' selects the vnc
#          change password command.   Otherwise, this specifies a new server URI
#          address to listen to for VNC connections.
#
# @arg:    If @device is a block device, then this is an optional format to open
#          the device with.
#          If @device is 'vnc' and @target is 'password', this is the new VNC
#          password to set.  See change-vnc-password for additional notes.
#
# Returns: Nothing on success.
#          If @device is not a valid block device, DeviceNotFound
#
# Notes:  This interface is deprecated, and it is strongly recommended that you
#         avoid using it.  For changing block devices, use
#         blockdev-change-medium; for changing VNC parameters, use
#         change-vnc-password.
#
# Since: 0.14.0
#
# Example:
#
# 1. Change a removable medium
#
# -> { "execute": "change",
#      "arguments": { "device": "ide1-cd0",
#                     "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
# <- { "return": {} }
#
# 2. Change VNC password
#
# -> { "execute": "change",
#      "arguments": { "device": "vnc", "target": "password",
#                     "arg": "foobar1" } }
# <- { "return": {} }
#
##
{ 'command': 'change',
  'data': {'device': 'str', 'target': 'str', '*arg': 'str'} }

##
# @xen-set-global-dirty-log:
#
# Enable or disable the global dirty log mode.
#
# @enable: true to enable, false to disable.
#
# Returns: nothing
#
# Since: 1.3
#
# Example:
#
# -> { "execute": "xen-set-global-dirty-log",
#      "arguments": { "enable": true } }
# <- { "return": {} }
#
##
{ 'command': 'xen-set-global-dirty-log', 'data': { 'enable': 'bool' } }

##
# @getfd:
#
# Receive a file descriptor via SCM rights and assign it a name
#
# @fdname: file descriptor name
#
# Returns: Nothing on success
#
# Since: 0.14.0
#
# Notes: If @fdname already exists, the file descriptor assigned to
#        it will be closed and replaced by the received file
#        descriptor.
#
#        The 'closefd' command can be used to explicitly close the
#        file descriptor when it is no longer needed.
#
# Example:
#
# -> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
# <- { "return": {} }
#
##
{ 'command': 'getfd', 'data': {'fdname': 'str'} }

##
# @closefd:
#
# Close a file descriptor previously passed via SCM rights
#
# @fdname: file descriptor name
#
# Returns: Nothing on success
#
# Since: 0.14.0
#
# Example:
#
# -> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
# <- { "return": {} }
#
##
{ 'command': 'closefd', 'data': {'fdname': 'str'} }

##
# @MemoryInfo:
#
# Actual memory information in bytes.
#
# @base-memory: size of "base" memory specified with command line
#               option -m.
#
# @plugged-memory: size of memory that can be hot-unplugged. This field
#                  is omitted if target doesn't support memory hotplug
#                  (i.e. CONFIG_MEM_DEVICE not defined at build time).
#
# Since: 2.11.0
##
{ 'struct': 'MemoryInfo',
  'data'  : { 'base-memory': 'size', '*plugged-memory': 'size' } }

##
# @query-memory-size-summary:
#
# Return the amount of initially allocated and present hotpluggable (if
# enabled) memory in bytes.
#
# Example:
#
# -> { "execute": "query-memory-size-summary" }
# <- { "return": { "base-memory": 4294967296, "plugged-memory": 0 } }
#
# Since: 2.11.0
##
{ 'command': 'query-memory-size-summary', 'returns': 'MemoryInfo' }


##
# @AddfdInfo:
#
# Information about a file descriptor that was added to an fd set.
#
# @fdset-id: The ID of the fd set that @fd was added to.
#
# @fd: The file descriptor that was received via SCM rights and
#      added to the fd set.
#
# Since: 1.2.0
##
{ 'struct': 'AddfdInfo', 'data': {'fdset-id': 'int', 'fd': 'int'} }

##
# @add-fd:
#
# Add a file descriptor, that was passed via SCM rights, to an fd set.
#
# @fdset-id: The ID of the fd set to add the file descriptor to.
#
# @opaque: A free-form string that can be used to describe the fd.
#
# Returns: @AddfdInfo on success
#
#          If file descriptor was not received, FdNotSupplied
#
#          If @fdset-id is a negative value, InvalidParameterValue
#
# Notes: The list of fd sets is shared by all monitor connections.
#
#        If @fdset-id is not specified, a new fd set will be created.
#
# Since: 1.2.0
#
# Example:
#
# -> { "execute": "add-fd", "arguments": { "fdset-id": 1 } }
# <- { "return": { "fdset-id": 1, "fd": 3 } }
#
##
{ 'command': 'add-fd',
  'data': { '*fdset-id': 'int',
            '*opaque': 'str' },
  'returns': 'AddfdInfo' }

##
# @remove-fd:
#
# Remove a file descriptor from an fd set.
#
# @fdset-id: The ID of the fd set that the file descriptor belongs to.
#
# @fd: The file descriptor that is to be removed.
#
# Returns: Nothing on success
#          If @fdset-id or @fd is not found, FdNotFound
#
# Since: 1.2.0
#
# Notes: The list of fd sets is shared by all monitor connections.
#
#        If @fd is not specified, all file descriptors in @fdset-id
#        will be removed.
#
# Example:
#
# -> { "execute": "remove-fd", "arguments": { "fdset-id": 1, "fd": 3 } }
# <- { "return": {} }
#
##
{ 'command': 'remove-fd', 'data': {'fdset-id': 'int', '*fd': 'int'} }

##
# @FdsetFdInfo:
#
# Information about a file descriptor that belongs to an fd set.
#
# @fd: The file descriptor value.
#
# @opaque: A free-form string that can be used to describe the fd.
#
# Since: 1.2.0
##
{ 'struct': 'FdsetFdInfo',
  'data': {'fd': 'int', '*opaque': 'str'} }

##
# @FdsetInfo:
#
# Information about an fd set.
#
# @fdset-id: The ID of the fd set.
#
# @fds: A list of file descriptors that belong to this fd set.
#
# Since: 1.2.0
##
{ 'struct': 'FdsetInfo',
  'data': {'fdset-id': 'int', 'fds': ['FdsetFdInfo']} }

##
# @query-fdsets:
#
# Return information describing all fd sets.
#
# Returns: A list of @FdsetInfo
#
# Since: 1.2.0
#
# Note: The list of fd sets is shared by all monitor connections.
#
# Example:
#
# -> { "execute": "query-fdsets" }
# <- { "return": [
#        {
#          "fds": [
#            {
#              "fd": 30,
#              "opaque": "rdonly:/path/to/file"
#            },
#            {
#              "fd": 24,
#              "opaque": "rdwr:/path/to/file"
#            }
#          ],
#          "fdset-id": 1
#        },
#        {
#          "fds": [
#            {
#              "fd": 28
#            },
#            {
#              "fd": 29
#            }
#          ],
#          "fdset-id": 0
#        }
#      ]
#    }
#
##
{ 'command': 'query-fdsets', 'returns': ['FdsetInfo'] }

##
# @TargetInfo:
#
# Information describing the QEMU target.
#
# @arch: the target architecture
#
# Since: 1.2.0
##
{ 'struct': 'TargetInfo',
  'data': { 'arch': 'SysEmuTarget' } }

##
# @query-target:
#
# Return information about the target for this QEMU
#
# Returns: TargetInfo
#
# Since: 1.2.0
##
{ 'command': 'query-target', 'returns': 'TargetInfo' }

##
# @AcpiTableOptions:
#
# Specify an ACPI table on the command line to load.
#
# At most one of @file and @data can be specified. The list of files specified
# by any one of them is loaded and concatenated in order. If both are omitted,
# @data is implied.
#
# Other fields / optargs can be used to override fields of the generic ACPI
# table header; refer to the ACPI specification 5.0, section 5.2.6 System
# Description Table Header. If a header field is not overridden, then the
# corresponding value from the concatenated blob is used (in case of @file), or
# it is filled in with a hard-coded value (in case of @data).
#
# String fields are copied into the matching ACPI member from lowest address
# upwards, and silently truncated / NUL-padded to length.
#
# @sig: table signature / identifier (4 bytes)
#
# @rev: table revision number (dependent on signature, 1 byte)
#
# @oem_id: OEM identifier (6 bytes)
#
# @oem_table_id: OEM table identifier (8 bytes)
#
# @oem_rev: OEM-supplied revision number (4 bytes)
#
# @asl_compiler_id: identifier of the utility that created the table
#                   (4 bytes)
#
# @asl_compiler_rev: revision number of the utility that created the
#                    table (4 bytes)
#
# @file: colon (:) separated list of pathnames to load and
#        concatenate as table data. The resultant binary blob is expected to
#        have an ACPI table header. At least one file is required. This field
#        excludes @data.
#
# @data: colon (:) separated list of pathnames to load and
#        concatenate as table data. The resultant binary blob must not have an
#        ACPI table header. At least one file is required. This field excludes
#        @file.
#
# Since: 1.5
##
{ 'struct': 'AcpiTableOptions',
  'data': {
    '*sig':               'str',
    '*rev':               'uint8',
    '*oem_id':            'str',
    '*oem_table_id':      'str',
    '*oem_rev':           'uint32',
    '*asl_compiler_id':   'str',
    '*asl_compiler_rev':  'uint32',
    '*file':              'str',
    '*data':              'str' }}

##
# @CommandLineParameterType:
#
# Possible types for an option parameter.
#
# @string: accepts a character string
#
# @boolean: accepts "on" or "off"
#
# @number: accepts a number
#
# @size: accepts a number followed by an optional suffix (K)ilo,
#        (M)ega, (G)iga, (T)era
#
# Since: 1.5
##
{ 'enum': 'CommandLineParameterType',
  'data': ['string', 'boolean', 'number', 'size'] }

##
# @CommandLineParameterInfo:
#
# Details about a single parameter of a command line option.
#
# @name: parameter name
#
# @type: parameter @CommandLineParameterType
#
# @help: human readable text string, not suitable for parsing.
#
# @default: default value string (since 2.1)
#
# Since: 1.5
##
{ 'struct': 'CommandLineParameterInfo',
  'data': { 'name': 'str',
            'type': 'CommandLineParameterType',
            '*help': 'str',
            '*default': 'str' } }

##
# @CommandLineOptionInfo:
#
# Details about a command line option, including its list of parameter details
#
# @option: option name
#
# @parameters: an array of @CommandLineParameterInfo
#
# Since: 1.5
##
{ 'struct': 'CommandLineOptionInfo',
  'data': { 'option': 'str', 'parameters': ['CommandLineParameterInfo'] } }

##
# @query-command-line-options:
#
# Query command line option schema.
#
# @option: option name
#
# Returns: list of @CommandLineOptionInfo for all options (or for the given
#          @option).  Returns an error if the given @option doesn't exist.
#
# Since: 1.5
#
# Example:
#
# -> { "execute": "query-command-line-options",
#      "arguments": { "option": "option-rom" } }
# <- { "return": [
#         {
#             "parameters": [
#                 {
#                     "name": "romfile",
#                     "type": "string"
#                 },
#                 {
#                     "name": "bootindex",
#                     "type": "number"
#                 }
#             ],
#             "option": "option-rom"
#         }
#      ]
#    }
#
##
{'command': 'query-command-line-options',
 'data': { '*option': 'str' },
 'returns': ['CommandLineOptionInfo'],
 'allow-preconfig': true }

##
# @PCDIMMDeviceInfo:
#
# PCDIMMDevice state information
#
# @id: device's ID
#
# @addr: physical address, where device is mapped
#
# @size: size of memory that the device provides
#
# @slot: slot number at which device is plugged in
#
# @node: NUMA node number where device is plugged in
#
# @memdev: memory backend linked with device
#
# @hotplugged: true if device was hotplugged
#
# @hotpluggable: true if device if could be added/removed while machine is running
#
# Since: 2.1
##
{ 'struct': 'PCDIMMDeviceInfo',
  'data': { '*id': 'str',
            'addr': 'int',
            'size': 'int',
            'slot': 'int',
            'node': 'int',
            'memdev': 'str',
            'hotplugged': 'bool',
            'hotpluggable': 'bool'
          }
}

##
# @VirtioPMEMDeviceInfo:
#
# VirtioPMEM state information
#
# @id: device's ID
#
# @memaddr: physical address in memory, where device is mapped
#
# @size: size of memory that the device provides
#
# @memdev: memory backend linked with device
#
# Since: 4.1
##
{ 'struct': 'VirtioPMEMDeviceInfo',
  'data': { '*id': 'str',
            'memaddr': 'size',
            'size': 'size',
            'memdev': 'str'
          }
}

##
# @MemoryDeviceInfo:
#
# Union containing information about a memory device
#
# nvdimm is included since 2.12. virtio-pmem is included since 4.1.
#
# Since: 2.1
##
{ 'union': 'MemoryDeviceInfo',
  'data': { 'dimm': 'PCDIMMDeviceInfo',
            'nvdimm': 'PCDIMMDeviceInfo',
            'virtio-pmem': 'VirtioPMEMDeviceInfo'
          }
}

##
# @query-memory-devices:
#
# Lists available memory devices and their state
#
# Since: 2.1
#
# Example:
#
# -> { "execute": "query-memory-devices" }
# <- { "return": [ { "data":
#                       { "addr": 5368709120,
#                         "hotpluggable": true,
#                         "hotplugged": true,
#                         "id": "d1",
#                         "memdev": "/objects/memX",
#                         "node": 0,
#                         "size": 1073741824,
#                         "slot": 0},
#                    "type": "dimm"
#                  } ] }
#
##
{ 'command': 'query-memory-devices', 'returns': ['MemoryDeviceInfo'] }

##
# @MEM_UNPLUG_ERROR:
#
# Emitted when memory hot unplug error occurs.
#
# @device: device name
#
# @msg: Informative message
#
# Since: 2.4
#
# Example:
#
# <- { "event": "MEM_UNPLUG_ERROR"
#      "data": { "device": "dimm1",
#                "msg": "acpi: device unplug for unsupported device"
#      },
#      "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
#
##
{ 'event': 'MEM_UNPLUG_ERROR',
  'data': { 'device': 'str', 'msg': 'str' } }

##
# @ACPISlotType:
#
# @DIMM: memory slot
# @CPU: logical CPU slot (since 2.7)
##
{ 'enum': 'ACPISlotType', 'data': [ 'DIMM', 'CPU' ] }

##
# @ACPIOSTInfo:
#
# OSPM Status Indication for a device
# For description of possible values of @source and @status fields
# see "_OST (OSPM Status Indication)" chapter of ACPI5.0 spec.
#
# @device: device ID associated with slot
#
# @slot: slot ID, unique per slot of a given @slot-type
#
# @slot-type: type of the slot
#
# @source: an integer containing the source event
#
# @status: an integer containing the status code
#
# Since: 2.1
##
{ 'struct': 'ACPIOSTInfo',
  'data'  : { '*device': 'str',
              'slot': 'str',
              'slot-type': 'ACPISlotType',
              'source': 'int',
              'status': 'int' } }

##
# @query-acpi-ospm-status:
#
# Return a list of ACPIOSTInfo for devices that support status
# reporting via ACPI _OST method.
#
# Since: 2.1
#
# Example:
#
# -> { "execute": "query-acpi-ospm-status" }
# <- { "return": [ { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0},
#                  { "slot": "1", "slot-type": "DIMM", "source": 0, "status": 0},
#                  { "slot": "2", "slot-type": "DIMM", "source": 0, "status": 0},
#                  { "slot": "3", "slot-type": "DIMM", "source": 0, "status": 0}
#    ]}
#
##
{ 'command': 'query-acpi-ospm-status', 'returns': ['ACPIOSTInfo'] }

##
# @ACPI_DEVICE_OST:
#
# Emitted when guest executes ACPI _OST method.
#
# @info: OSPM Status Indication
#
# Since: 2.1
#
# Example:
#
# <- { "event": "ACPI_DEVICE_OST",
#      "data": { "device": "d1", "slot": "0",
#                "slot-type": "DIMM", "source": 1, "status": 0 } }
#
##
{ 'event': 'ACPI_DEVICE_OST',
     'data': { 'info': 'ACPIOSTInfo' } }

##
# @ReplayMode:
#
# Mode of the replay subsystem.
#
# @none: normal execution mode. Replay or record are not enabled.
#
# @record: record mode. All non-deterministic data is written into the
#          replay log.
#
# @play: replay mode. Non-deterministic data required for system execution
#        is read from the log.
#
# Since: 2.5
##
{ 'enum': 'ReplayMode',
  'data': [ 'none', 'record', 'play' ] }

##
# @xen-load-devices-state:
#
# Load the state of all devices from file. The RAM and the block devices
# of the VM are not loaded by this command.
#
# @filename: the file to load the state of the devices from as binary
# data. See xen-save-devices-state.txt for a description of the binary
# format.
#
# Since: 2.7
#
# Example:
#
# -> { "execute": "xen-load-devices-state",
#      "arguments": { "filename": "/tmp/resume" } }
# <- { "return": {} }
#
##
{ 'command': 'xen-load-devices-state', 'data': {'filename': 'str'} }

##
# @GuidInfo:
#
# GUID information.
#
# @guid: the globally unique identifier
#
# Since: 2.9
##
{ 'struct': 'GuidInfo', 'data': {'guid': 'str'} }

##
# @query-vm-generation-id:
#
# Show Virtual Machine Generation ID
#
# Since: 2.9
##
{ 'command': 'query-vm-generation-id', 'returns': 'GuidInfo' }