qmp-commands.hx

   1 HXCOMM QMP dispatch table and documentation
   2 HXCOMM Text between SQMP and EQMP is copied to the QMP documention file and
   3 HXCOMM does not show up in the other formats.
   4
   5 SQMP
   6                         QMP Supported Commands
   7                         ----------------------
   8
   9 This document describes all commands currently supported by QMP.
  10
  11 Most of the time their usage is exactly the same as in the user Monitor, this
  12 means that any other document which also describe commands (the manpage,
  13 QEMU's manual, etc) can and should be consulted.
  14
  15 QMP has two types of commands: regular and query commands. Regular commands
  16 usually change the Virtual Machine's state someway, while query commands just
  17 return information. The sections below are divided accordingly.
  18
  19 It's important to observe that all communication examples are formatted in
  20 a reader-friendly way, so that they're easier to understand. However, in real
  21 protocol usage, they're emitted as a single line.
  22
  23 Also, the following notation is used to denote data flow:
  24
  25 -> data issued by the Client
  26 <- Server data response
  27
  28 Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed
  29 information on the Server command and response formats.
  30
  31 NOTE: This document is temporary and will be replaced soon.
  32
  33 1. Stability Considerations
  34 ===========================
  35
  36 The current QMP command set (described in this file) may be useful for a
  37 number of use cases, however it's limited and several commands have bad
  38 defined semantics, specially with regard to command completion.
  39
  40 These problems are going to be solved incrementally in the next QEMU releases
  41 and we're going to establish a deprecation policy for badly defined commands.
  42
  43 If you're planning to adopt QMP, please observe the following:
  44
  45     1. The deprecation policy will take effect and be documented soon, please
  46        check the documentation of each used command as soon as a new release of
  47        QEMU is available
  48
  49     2. DO NOT rely on anything which is not explicit documented
  50
  51     3. Errors, in special, are not documented. Applications should NOT check
  52        for specific errors classes or data (it's strongly recommended to only
  53        check for the "error" key)
  54
  55 2. Regular Commands
  56 ===================
  57
  58 Server's responses in the examples below are always a success response, please
  59 refer to the QMP specification for more details on error responses.
  60
  61 EQMP
  62
  63     {
  64         .name       = "quit",
  65         .args_type  = "",
  66         .mhandler.cmd_new = qmp_marshal_input_quit,
  67     },
  68
  69 SQMP
  70 quit
  71 ----
  72
  73 Quit the emulator.
  74
  75 Arguments: None.
  76
  77 Example:
  78
  79 -> { "execute": "quit" }
  80 <- { "return": {} }
  81
  82 EQMP
  83
  84     {
  85         .name       = "eject",
  86         .args_type  = "force:-f,device:B",
  87         .mhandler.cmd_new = qmp_marshal_input_eject,
  88     },
  89
  90 SQMP
  91 eject
  92 -----
  93
  94 Eject a removable medium.
  95
  96 Arguments:
  97
  98 - force: force ejection (json-bool, optional)
  99 - device: device name (json-string)
 100
 101 Example:
 102
 103 -> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
 104 <- { "return": {} }
 105
 106 Note: The "force" argument defaults to false.
 107
 108 EQMP
 109
 110     {
 111         .name       = "change",
 112         .args_type  = "device:B,target:F,arg:s?",
 113         .mhandler.cmd_new = qmp_marshal_input_change,
 114     },
 115
 116 SQMP
 117 change
 118 ------
 119
 120 Change a removable medium or VNC configuration.
 121
 122 Arguments:
 123
 124 - "device": device name (json-string)
 125 - "target": filename or item (json-string)
 126 - "arg": additional argument (json-string, optional)
 127
 128 Examples:
 129
 130 1. Change a removable medium
 131
 132 -> { "execute": "change",
 133              "arguments": { "device": "ide1-cd0",
 134                             "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
 135 <- { "return": {} }
 136
 137 2. Change VNC password
 138
 139 -> { "execute": "change",
 140              "arguments": { "device": "vnc", "target": "password",
 141                             "arg": "foobar1" } }
 142 <- { "return": {} }
 143
 144 EQMP
 145
 146     {
 147         .name       = "screendump",
 148         .args_type  = "filename:F",
 149         .params     = "filename",
 150         .help       = "save screen into PPM image 'filename'",
 151         .user_print = monitor_user_noop,
 152         .mhandler.cmd_new = do_screen_dump,
 153     },
 154
 155 SQMP
 156 screendump
 157 ----------
 158
 159 Save screen into PPM image.
 160
 161 Arguments:
 162
 163 - "filename": file path (json-string)
 164
 165 Example:
 166
 167 -> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
 168 <- { "return": {} }
 169
 170 EQMP
 171
 172     {
 173         .name       = "stop",
 174         .args_type  = "",
 175         .mhandler.cmd_new = qmp_marshal_input_stop,
 176     },
 177
 178 SQMP
 179 stop
 180 ----
 181
 182 Stop the emulator.
 183
 184 Arguments: None.
 185
 186 Example:
 187
 188 -> { "execute": "stop" }
 189 <- { "return": {} }
 190
 191 EQMP
 192
 193     {
 194         .name       = "cont",
 195         .args_type  = "",
 196         .mhandler.cmd_new = qmp_marshal_input_cont,
 197     },
 198
 199 SQMP
 200 cont
 201 ----
 202
 203 Resume emulation.
 204
 205 Arguments: None.
 206
 207 Example:
 208
 209 -> { "execute": "cont" }
 210 <- { "return": {} }
 211
 212 EQMP
 213
 214     {
 215         .name       = "system_wakeup",
 216         .args_type  = "",
 217         .mhandler.cmd_new = qmp_marshal_input_system_wakeup,
 218     },
 219
 220 SQMP
 221 system_wakeup
 222 -------------
 223
 224 Wakeup guest from suspend.
 225
 226 Arguments: None.
 227
 228 Example:
 229
 230 -> { "execute": "system_wakeup" }
 231 <- { "return": {} }
 232
 233 EQMP
 234
 235     {
 236         .name       = "system_reset",
 237         .args_type  = "",
 238         .mhandler.cmd_new = qmp_marshal_input_system_reset,
 239     },
 240
 241 SQMP
 242 system_reset
 243 ------------
 244
 245 Reset the system.
 246
 247 Arguments: None.
 248
 249 Example:
 250
 251 -> { "execute": "system_reset" }
 252 <- { "return": {} }
 253
 254 EQMP
 255
 256     {
 257         .name       = "system_powerdown",
 258         .args_type  = "",
 259         .mhandler.cmd_new = qmp_marshal_input_system_powerdown,
 260     },
 261
 262 SQMP
 263 system_powerdown
 264 ----------------
 265
 266 Send system power down event.
 267
 268 Arguments: None.
 269
 270 Example:
 271
 272 -> { "execute": "system_powerdown" }
 273 <- { "return": {} }
 274
 275 EQMP
 276
 277     {
 278         .name       = "device_add",
 279         .args_type  = "device:O",
 280         .params     = "driver[,prop=value][,...]",
 281         .help       = "add device, like -device on the command line",
 282         .user_print = monitor_user_noop,
 283         .mhandler.cmd_new = do_device_add,
 284     },
 285
 286 SQMP
 287 device_add
 288 ----------
 289
 290 Add a device.
 291
 292 Arguments:
 293
 294 - "driver": the name of the new device's driver (json-string)
 295 - "bus": the device's parent bus (device tree path, json-string, optional)
 296 - "id": the device's ID, must be unique (json-string)
 297 - device properties
 298
 299 Example:
 300
 301 -> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } }
 302 <- { "return": {} }
 303
 304 Notes:
 305
 306 (1) For detailed information about this command, please refer to the
 307     'docs/qdev-device-use.txt' file.
 308
 309 (2) It's possible to list device properties by running QEMU with the
 310     "-device DEVICE,\?" command-line argument, where DEVICE is the device's name
 311
 312 EQMP
 313
 314     {
 315         .name       = "device_del",
 316         .args_type  = "id:s",
 317         .mhandler.cmd_new = qmp_marshal_input_device_del,
 318     },
 319
 320 SQMP
 321 device_del
 322 ----------
 323
 324 Remove a device.
 325
 326 Arguments:
 327
 328 - "id": the device's ID (json-string)
 329
 330 Example:
 331
 332 -> { "execute": "device_del", "arguments": { "id": "net1" } }
 333 <- { "return": {} }
 334
 335 EQMP
 336
 337     {
 338         .name       = "cpu",
 339         .args_type  = "index:i",
 340         .mhandler.cmd_new = qmp_marshal_input_cpu,
 341     },
 342
 343 SQMP
 344 cpu
 345 ---
 346
 347 Set the default CPU.
 348
 349 Arguments:
 350
 351 - "index": the CPU's index (json-int)
 352
 353 Example:
 354
 355 -> { "execute": "cpu", "arguments": { "index": 0 } }
 356 <- { "return": {} }
 357
 358 Note: CPUs' indexes are obtained with the 'query-cpus' command.
 359
 360 EQMP
 361
 362     {
 363         .name       = "memsave",
 364         .args_type  = "val:l,size:i,filename:s,cpu:i?",
 365         .mhandler.cmd_new = qmp_marshal_input_memsave,
 366     },
 367
 368 SQMP
 369 memsave
 370 -------
 371
 372 Save to disk virtual memory dump starting at 'val' of size 'size'.
 373
 374 Arguments:
 375
 376 - "val": the starting address (json-int)
 377 - "size": the memory size, in bytes (json-int)
 378 - "filename": file path (json-string)
 379 - "cpu": virtual CPU index (json-int, optional)
 380
 381 Example:
 382
 383 -> { "execute": "memsave",
 384              "arguments": { "val": 10,
 385                             "size": 100,
 386                             "filename": "/tmp/virtual-mem-dump" } }
 387 <- { "return": {} }
 388
 389 EQMP
 390
 391     {
 392         .name       = "pmemsave",
 393         .args_type  = "val:l,size:i,filename:s",
 394         .mhandler.cmd_new = qmp_marshal_input_pmemsave,
 395     },
 396
 397 SQMP
 398 pmemsave
 399 --------
 400
 401 Save to disk physical memory dump starting at 'val' of size 'size'.
 402
 403 Arguments:
 404
 405 - "val": the starting address (json-int)
 406 - "size": the memory size, in bytes (json-int)
 407 - "filename": file path (json-string)
 408
 409 Example:
 410
 411 -> { "execute": "pmemsave",
 412              "arguments": { "val": 10,
 413                             "size": 100,
 414                             "filename": "/tmp/physical-mem-dump" } }
 415 <- { "return": {} }
 416
 417 EQMP
 418
 419     {
 420         .name       = "inject-nmi",
 421         .args_type  = "",
 422         .mhandler.cmd_new = qmp_marshal_input_inject_nmi,
 423     },
 424
 425 SQMP
 426 inject-nmi
 427 ----------
 428
 429 Inject an NMI on guest's CPUs.
 430
 431 Arguments: None.
 432
 433 Example:
 434
 435 -> { "execute": "inject-nmi" }
 436 <- { "return": {} }
 437
 438 Note: inject-nmi is only supported for x86 guest currently, it will
 439       returns "Unsupported" error for non-x86 guest.
 440
 441 EQMP
 442
 443     {
 444         .name       = "xen-save-devices-state",
 445         .args_type  = "filename:F",
 446     .mhandler.cmd_new = qmp_marshal_input_xen_save_devices_state,
 447     },
 448
 449 SQMP
 450 xen-save-devices-state
 451 -------
 452
 453 Save the state of all devices to file. The RAM and the block devices
 454 of the VM are not saved by this command.
 455
 456 Arguments:
 457
 458 - "filename": the file to save the state of the devices to as binary
 459 data. See xen-save-devices-state.txt for a description of the binary
 460 format.
 461
 462 Example:
 463
 464 -> { "execute": "xen-save-devices-state",
 465      "arguments": { "filename": "/tmp/save" } }
 466 <- { "return": {} }
 467
 468 EQMP
 469
 470     {
 471         .name       = "migrate",
 472         .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
 473         .mhandler.cmd_new = qmp_marshal_input_migrate,
 474     },
 475
 476 SQMP
 477 migrate
 478 -------
 479
 480 Migrate to URI.
 481
 482 Arguments:
 483
 484 - "blk": block migration, full disk copy (json-bool, optional)
 485 - "inc": incremental disk copy (json-bool, optional)
 486 - "uri": Destination URI (json-string)
 487
 488 Example:
 489
 490 -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
 491 <- { "return": {} }
 492
 493 Notes:
 494
 495 (1) The 'query-migrate' command should be used to check migration's progress
 496     and final result (this information is provided by the 'status' member)
 497 (2) All boolean arguments default to false
 498 (3) The user Monitor's "detach" argument is invalid in QMP and should not
 499     be used
 500
 501 EQMP
 502
 503     {
 504         .name       = "migrate_cancel",
 505         .args_type  = "",
 506         .mhandler.cmd_new = qmp_marshal_input_migrate_cancel,
 507     },
 508
 509 SQMP
 510 migrate_cancel
 511 --------------
 512
 513 Cancel the current migration.
 514
 515 Arguments: None.
 516
 517 Example:
 518
 519 -> { "execute": "migrate_cancel" }
 520 <- { "return": {} }
 521
 522 EQMP
 523
 524     {
 525         .name       = "migrate_set_speed",
 526         .args_type  = "value:o",
 527         .mhandler.cmd_new = qmp_marshal_input_migrate_set_speed,
 528     },
 529
 530 SQMP
 531 migrate_set_speed
 532 -----------------
 533
 534 Set maximum speed for migrations.
 535
 536 Arguments:
 537
 538 - "value": maximum speed, in bytes per second (json-int)
 539
 540 Example:
 541
 542 -> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
 543 <- { "return": {} }
 544
 545 EQMP
 546
 547     {
 548         .name       = "migrate_set_downtime",
 549         .args_type  = "value:T",
 550         .mhandler.cmd_new = qmp_marshal_input_migrate_set_downtime,
 551     },
 552
 553 SQMP
 554 migrate_set_downtime
 555 --------------------
 556
 557 Set maximum tolerated downtime (in seconds) for migrations.
 558
 559 Arguments:
 560
 561 - "value": maximum downtime (json-number)
 562
 563 Example:
 564
 565 -> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
 566 <- { "return": {} }
 567
 568 EQMP
 569
 570     {
 571         .name       = "client_migrate_info",
 572         .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
 573         .params     = "protocol hostname port tls-port cert-subject",
 574         .help       = "send migration info to spice/vnc client",
 575         .user_print = monitor_user_noop,
 576         .mhandler.cmd_async = client_migrate_info,
 577         .flags      = MONITOR_CMD_ASYNC,
 578     },
 579
 580 SQMP
 581 client_migrate_info
 582 ------------------
 583
 584 Set the spice/vnc connection info for the migration target.  The spice/vnc
 585 server will ask the spice/vnc client to automatically reconnect using the
 586 new parameters (if specified) once the vm migration finished successfully.
 587
 588 Arguments:
 589
 590 - "protocol":     protocol: "spice" or "vnc" (json-string)
 591 - "hostname":     migration target hostname (json-string)
 592 - "port":         spice/vnc tcp port for plaintext channels (json-int, optional)
 593 - "tls-port":     spice tcp port for tls-secured channels (json-int, optional)
 594 - "cert-subject": server certificate subject (json-string, optional)
 595
 596 Example:
 597
 598 -> { "execute": "client_migrate_info",
 599      "arguments": { "protocol": "spice",
 600                     "hostname": "virt42.lab.kraxel.org",
 601                     "port": 1234 } }
 602 <- { "return": {} }
 603
 604 EQMP
 605
 606     {
 607         .name       = "dump-guest-memory",
 608         .args_type  = "paging:b,protocol:s,begin:i?,end:i?",
 609         .params     = "-p protocol [begin] [length]",
 610         .help       = "dump guest memory to file",
 611         .user_print = monitor_user_noop,
 612         .mhandler.cmd_new = qmp_marshal_input_dump_guest_memory,
 613     },
 614
 615 SQMP
 616 dump
 617
 618
 619 Dump guest memory to file. The file can be processed with crash or gdb.
 620
 621 Arguments:
 622
 623 - "paging": do paging to get guest's memory mapping (json-bool)
 624 - "protocol": destination file(started with "file:") or destination file
 625               descriptor (started with "fd:") (json-string)
 626 - "begin": the starting physical address. It's optional, and should be specified
 627            with length together (json-int)
 628 - "length": the memory size, in bytes. It's optional, and should be specified
 629             with begin together (json-int)
 630
 631 Example:
 632
 633 -> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } }
 634 <- { "return": {} }
 635
 636 Notes:
 637
 638 (1) All boolean arguments default to false
 639
 640 EQMP
 641
 642     {
 643         .name       = "netdev_add",
 644         .args_type  = "netdev:O",
 645         .mhandler.cmd_new = qmp_netdev_add,
 646     },
 647
 648 SQMP
 649 netdev_add
 650 ----------
 651
 652 Add host network device.
 653
 654 Arguments:
 655
 656 - "type": the device type, "tap", "user", ... (json-string)
 657 - "id": the device's ID, must be unique (json-string)
 658 - device options
 659
 660 Example:
 661
 662 -> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } }
 663 <- { "return": {} }
 664
 665 Note: The supported device options are the same ones supported by the '-net'
 666       command-line argument, which are listed in the '-help' output or QEMU's
 667       manual
 668
 669 EQMP
 670
 671     {
 672         .name       = "netdev_del",
 673         .args_type  = "id:s",
 674         .mhandler.cmd_new = qmp_marshal_input_netdev_del,
 675     },
 676
 677 SQMP
 678 netdev_del
 679 ----------
 680
 681 Remove host network device.
 682
 683 Arguments:
 684
 685 - "id": the device's ID, must be unique (json-string)
 686
 687 Example:
 688
 689 -> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
 690 <- { "return": {} }
 691
 692
 693 EQMP
 694
 695     {
 696         .name       = "block_resize",
 697         .args_type  = "device:B,size:o",
 698         .mhandler.cmd_new = qmp_marshal_input_block_resize,
 699     },
 700
 701 SQMP
 702 block_resize
 703 ------------
 704
 705 Resize a block image while a guest is running.
 706
 707 Arguments:
 708
 709 - "device": the device's ID, must be unique (json-string)
 710 - "size": new size
 711
 712 Example:
 713
 714 -> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } }
 715 <- { "return": {} }
 716
 717 EQMP
 718
 719     {
 720         .name       = "block-stream",
 721         .args_type  = "device:B,base:s?,speed:o?",
 722         .mhandler.cmd_new = qmp_marshal_input_block_stream,
 723     },
 724
 725     {
 726         .name       = "block-job-set-speed",
 727         .args_type  = "device:B,speed:o",
 728         .mhandler.cmd_new = qmp_marshal_input_block_job_set_speed,
 729     },
 730
 731     {
 732         .name       = "block-job-cancel",
 733         .args_type  = "device:B",
 734         .mhandler.cmd_new = qmp_marshal_input_block_job_cancel,
 735     },
 736     {
 737         .name       = "transaction",
 738         .args_type  = "actions:q",
 739         .mhandler.cmd_new = qmp_marshal_input_transaction,
 740     },
 741
 742 SQMP
 743 transaction
 744 -----------
 745
 746 Atomically operate on one or more block devices.  The only supported
 747 operation for now is snapshotting.  If there is any failure performing
 748 any of the operations, all snapshots for the group are abandoned, and
 749 the original disks pre-snapshot attempt are used.
 750
 751 A list of dictionaries is accepted, that contains the actions to be performed.
 752 For snapshots this is the device, the file to use for the new snapshot,
 753 and the format.  The default format, if not specified, is qcow2.
 754
 755 Each new snapshot defaults to being created by QEMU (wiping any
 756 contents if the file already exists), but it is also possible to reuse
 757 an externally-created file.  In the latter case, you should ensure that
 758 the new image file has the same contents as the current one; QEMU cannot
 759 perform any meaningful check.  Typically this is achieved by using the
 760 current image file as the backing file for the new image.
 761
 762 Arguments:
 763
 764 actions array:
 765     - "type": the operation to perform.  The only supported
 766       value is "blockdev-snapshot-sync". (json-string)
 767     - "data": a dictionary.  The contents depend on the value
 768       of "type".  When "type" is "blockdev-snapshot-sync":
 769       - "device": device name to snapshot (json-string)
 770       - "snapshot-file": name of new image file (json-string)
 771       - "format": format of new image (json-string, optional)
 772       - "mode": whether and how QEMU should create the snapshot file
 773         (NewImageMode, optional, default "absolute-paths")
 774
 775 Example:
 776
 777 -> { "execute": "transaction",
 778      "arguments": { "actions": [
 779          { 'type': 'blockdev-snapshot-sync', 'data' : { "device": "ide-hd0",
 780                                          "snapshot-file": "/some/place/my-image",
 781                                          "format": "qcow2" } },
 782          { 'type': 'blockdev-snapshot-sync', 'data' : { "device": "ide-hd1",
 783                                          "snapshot-file": "/some/place/my-image2",
 784                                          "mode": "existing",
 785                                          "format": "qcow2" } } ] } }
 786 <- { "return": {} }
 787
 788 EQMP
 789
 790     {
 791         .name       = "blockdev-snapshot-sync",
 792         .args_type  = "device:B,snapshot-file:s,format:s?,mode:s?",
 793         .mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_sync,
 794     },
 795
 796 SQMP
 797 blockdev-snapshot-sync
 798 ----------------------
 799
 800 Synchronous snapshot of a block device. snapshot-file specifies the
 801 target of the new image. If the file exists, or if it is a device, the
 802 snapshot will be created in the existing file/device. If does not
 803 exist, a new file will be created. format specifies the format of the
 804 snapshot image, default is qcow2.
 805
 806 Arguments:
 807
 808 - "device": device name to snapshot (json-string)
 809 - "snapshot-file": name of new image file (json-string)
 810 - "mode": whether and how QEMU should create the snapshot file
 811   (NewImageMode, optional, default "absolute-paths")
 812 - "format": format of new image (json-string, optional)
 813
 814 Example:
 815
 816 -> { "execute": "blockdev-snapshot-sync", "arguments": { "device": "ide-hd0",
 817                                                          "snapshot-file":
 818                                                         "/some/place/my-image",
 819                                                         "format": "qcow2" } }
 820 <- { "return": {} }
 821
 822 EQMP
 823
 824     {
 825         .name       = "balloon",
 826         .args_type  = "value:M",
 827         .mhandler.cmd_new = qmp_marshal_input_balloon,
 828     },
 829
 830 SQMP
 831 balloon
 832 -------
 833
 834 Request VM to change its memory allocation (in bytes).
 835
 836 Arguments:
 837
 838 - "value": New memory allocation (json-int)
 839
 840 Example:
 841
 842 -> { "execute": "balloon", "arguments": { "value": 536870912 } }
 843 <- { "return": {} }
 844
 845 EQMP
 846
 847     {
 848         .name       = "set_link",
 849         .args_type  = "name:s,up:b",
 850         .mhandler.cmd_new = qmp_marshal_input_set_link,
 851     },
 852
 853 SQMP
 854 set_link
 855 --------
 856
 857 Change the link status of a network adapter.
 858
 859 Arguments:
 860
 861 - "name": network device name (json-string)
 862 - "up": status is up (json-bool)
 863
 864 Example:
 865
 866 -> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } }
 867 <- { "return": {} }
 868
 869 EQMP
 870
 871     {
 872         .name       = "getfd",
 873         .args_type  = "fdname:s",
 874         .params     = "getfd name",
 875         .help       = "receive a file descriptor via SCM rights and assign it a name",
 876         .mhandler.cmd_new = qmp_marshal_input_getfd,
 877     },
 878
 879 SQMP
 880 getfd
 881 -----
 882
 883 Receive a file descriptor via SCM rights and assign it a name.
 884
 885 Arguments:
 886
 887 - "fdname": file descriptor name (json-string)
 888
 889 Example:
 890
 891 -> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
 892 <- { "return": {} }
 893
 894 Notes:
 895
 896 (1) If the name specified by the "fdname" argument already exists,
 897     the file descriptor assigned to it will be closed and replaced
 898     by the received file descriptor.
 899 (2) The 'closefd' command can be used to explicitly close the file
 900     descriptor when it is no longer needed.
 901
 902 EQMP
 903
 904     {
 905         .name       = "closefd",
 906         .args_type  = "fdname:s",
 907         .params     = "closefd name",
 908         .help       = "close a file descriptor previously passed via SCM rights",
 909         .mhandler.cmd_new = qmp_marshal_input_closefd,
 910     },
 911
 912 SQMP
 913 closefd
 914 -------
 915
 916 Close a file descriptor previously passed via SCM rights.
 917
 918 Arguments:
 919
 920 - "fdname": file descriptor name (json-string)
 921
 922 Example:
 923
 924 -> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
 925 <- { "return": {} }
 926
 927 EQMP
 928
 929     {
 930         .name       = "block_passwd",
 931         .args_type  = "device:B,password:s",
 932         .mhandler.cmd_new = qmp_marshal_input_block_passwd,
 933     },
 934
 935 SQMP
 936 block_passwd
 937 ------------
 938
 939 Set the password of encrypted block devices.
 940
 941 Arguments:
 942
 943 - "device": device name (json-string)
 944 - "password": password (json-string)
 945
 946 Example:
 947
 948 -> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0",
 949                                                "password": "12345" } }
 950 <- { "return": {} }
 951
 952 EQMP
 953
 954     {
 955         .name       = "block_set_io_throttle",
 956         .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
 957         .mhandler.cmd_new = qmp_marshal_input_block_set_io_throttle,
 958     },
 959
 960 SQMP
 961 block_set_io_throttle
 962 ------------
 963
 964 Change I/O throttle limits for a block drive.
 965
 966 Arguments:
 967
 968 - "device": device name (json-string)
 969 - "bps":  total throughput limit in bytes per second(json-int)
 970 - "bps_rd":  read throughput limit in bytes per second(json-int)
 971 - "bps_wr":  read throughput limit in bytes per second(json-int)
 972 - "iops":  total I/O operations per second(json-int)
 973 - "iops_rd":  read I/O operations per second(json-int)
 974 - "iops_wr":  write I/O operations per second(json-int)
 975
 976 Example:
 977
 978 -> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0",
 979                                                "bps": "1000000",
 980                                                "bps_rd": "0",
 981                                                "bps_wr": "0",
 982                                                "iops": "0",
 983                                                "iops_rd": "0",
 984                                                "iops_wr": "0" } }
 985 <- { "return": {} }
 986
 987 EQMP
 988
 989     {
 990         .name       = "set_password",
 991         .args_type  = "protocol:s,password:s,connected:s?",
 992         .mhandler.cmd_new = qmp_marshal_input_set_password,
 993     },
 994
 995 SQMP
 996 set_password
 997 ------------
 998
 999 Set the password for vnc/spice protocols.
1000
1001 Arguments:
1002
1003 - "protocol": protocol name (json-string)
1004 - "password": password (json-string)
1005 - "connected": [ keep | disconnect | fail ] (josn-string, optional)
1006
1007 Example:
1008
1009 -> { "execute": "set_password", "arguments": { "protocol": "vnc",
1010                                                "password": "secret" } }
1011 <- { "return": {} }
1012
1013 EQMP
1014
1015     {
1016         .name       = "expire_password",
1017         .args_type  = "protocol:s,time:s",
1018         .mhandler.cmd_new = qmp_marshal_input_expire_password,
1019     },
1020
1021 SQMP
1022 expire_password
1023 ---------------
1024
1025 Set the password expire time for vnc/spice protocols.
1026
1027 Arguments:
1028
1029 - "protocol": protocol name (json-string)
1030 - "time": [ now | never | +secs | secs ] (json-string)
1031
1032 Example:
1033
1034 -> { "execute": "expire_password", "arguments": { "protocol": "vnc",
1035                                                   "time": "+60" } }
1036 <- { "return": {} }
1037
1038 EQMP
1039
1040     {
1041         .name       = "add_client",
1042         .args_type  = "protocol:s,fdname:s,skipauth:b?,tls:b?",
1043         .params     = "protocol fdname skipauth tls",
1044         .help       = "add a graphics client",
1045         .user_print = monitor_user_noop,
1046         .mhandler.cmd_new = add_graphics_client,
1047     },
1048
1049 SQMP
1050 add_client
1051 ----------
1052
1053 Add a graphics client
1054
1055 Arguments:
1056
1057 - "protocol": protocol name (json-string)
1058 - "fdname": file descriptor name (json-string)
1059 - "skipauth": whether to skip authentication (json-bool, optional)
1060 - "tls": whether to perform TLS (json-bool, optional)
1061
1062 Example:
1063
1064 -> { "execute": "add_client", "arguments": { "protocol": "vnc",
1065                                              "fdname": "myclient" } }
1066 <- { "return": {} }
1067
1068 EQMP
1069     {
1070         .name       = "qmp_capabilities",
1071         .args_type  = "",
1072         .params     = "",
1073         .help       = "enable QMP capabilities",
1074         .user_print = monitor_user_noop,
1075         .mhandler.cmd_new = do_qmp_capabilities,
1076     },
1077
1078 SQMP
1079 qmp_capabilities
1080 ----------------
1081
1082 Enable QMP capabilities.
1083
1084 Arguments: None.
1085
1086 Example:
1087
1088 -> { "execute": "qmp_capabilities" }
1089 <- { "return": {} }
1090
1091 Note: This command must be issued before issuing any other command.
1092
1093 EQMP
1094
1095     {
1096         .name       = "human-monitor-command",
1097         .args_type  = "command-line:s,cpu-index:i?",
1098         .mhandler.cmd_new = qmp_marshal_input_human_monitor_command,
1099     },
1100
1101 SQMP
1102 human-monitor-command
1103 ---------------------
1104
1105 Execute a Human Monitor command.
1106
1107 Arguments:
1108
1109 - command-line: the command name and its arguments, just like the
1110                 Human Monitor's shell (json-string)
1111 - cpu-index: select the CPU number to be used by commands which access CPU
1112              data, like 'info registers'. The Monitor selects CPU 0 if this
1113              argument is not provided (json-int, optional)
1114
1115 Example:
1116
1117 -> { "execute": "human-monitor-command", "arguments": { "command-line": "info kvm" } }
1118 <- { "return": "kvm support: enabled\r\n" }
1119
1120 Notes:
1121
1122 (1) The Human Monitor is NOT an stable interface, this means that command
1123     names, arguments and responses can change or be removed at ANY time.
1124     Applications that rely on long term stability guarantees should NOT
1125     use this command
1126
1127 (2) Limitations:
1128
1129     o This command is stateless, this means that commands that depend
1130       on state information (such as getfd) might not work
1131
1132     o Commands that prompt the user for data (eg. 'cont' when the block
1133       device is encrypted) don't currently work
1134
1135 3. Query Commands
1136 =================
1137
1138 HXCOMM Each query command below is inside a SQMP/EQMP section, do NOT change
1139 HXCOMM this! We will possibly move query commands definitions inside those
1140 HXCOMM sections, just like regular commands.
1141
1142 EQMP
1143
1144 SQMP
1145 query-version
1146 -------------
1147
1148 Show QEMU version.
1149
1150 Return a json-object with the following information:
1151
1152 - "qemu": A json-object containing three integer values:
1153     - "major": QEMU's major version (json-int)
1154     - "minor": QEMU's minor version (json-int)
1155     - "micro": QEMU's micro version (json-int)
1156 - "package": package's version (json-string)
1157
1158 Example:
1159
1160 -> { "execute": "query-version" }
1161 <- {
1162       "return":{
1163          "qemu":{
1164             "major":0,
1165             "minor":11,
1166             "micro":5
1167          },
1168          "package":""
1169       }
1170    }
1171
1172 EQMP
1173
1174     {
1175         .name       = "query-version",
1176         .args_type  = "",
1177         .mhandler.cmd_new = qmp_marshal_input_query_version,
1178     },
1179
1180 SQMP
1181 query-commands
1182 --------------
1183
1184 List QMP available commands.
1185
1186 Each command is represented by a json-object, the returned value is a json-array
1187 of all commands.
1188
1189 Each json-object contain:
1190
1191 - "name": command's name (json-string)
1192
1193 Example:
1194
1195 -> { "execute": "query-commands" }
1196 <- {
1197       "return":[
1198          {
1199             "name":"query-balloon"
1200          },
1201          {
1202             "name":"system_powerdown"
1203          }
1204       ]
1205    }
1206
1207 Note: This example has been shortened as the real response is too long.
1208
1209 EQMP
1210
1211     {
1212         .name       = "query-commands",
1213         .args_type  = "",
1214         .mhandler.cmd_new = qmp_marshal_input_query_commands,
1215     },
1216
1217 SQMP
1218 query-events
1219 --------------
1220
1221 List QMP available events.
1222
1223 Each event is represented by a json-object, the returned value is a json-array
1224 of all events.
1225
1226 Each json-object contains:
1227
1228 - "name": event's name (json-string)
1229
1230 Example:
1231
1232 -> { "execute": "query-events" }
1233 <- {
1234       "return":[
1235          {
1236             "name":"SHUTDOWN"
1237          },
1238          {
1239             "name":"RESET"
1240          }
1241       ]
1242    }
1243
1244 Note: This example has been shortened as the real response is too long.
1245
1246 EQMP
1247
1248     {
1249         .name       = "query-events",
1250         .args_type  = "",
1251         .mhandler.cmd_new = qmp_marshal_input_query_events,
1252     },
1253
1254 SQMP
1255 query-chardev
1256 -------------
1257
1258 Each device is represented by a json-object. The returned value is a json-array
1259 of all devices.
1260
1261 Each json-object contain the following:
1262
1263 - "label": device's label (json-string)
1264 - "filename": device's file (json-string)
1265
1266 Example:
1267
1268 -> { "execute": "query-chardev" }
1269 <- {
1270       "return":[
1271          {
1272             "label":"monitor",
1273             "filename":"stdio"
1274          },
1275          {
1276             "label":"serial0",
1277             "filename":"vc"
1278          }
1279       ]
1280    }
1281
1282 EQMP
1283
1284     {
1285         .name       = "query-chardev",
1286         .args_type  = "",
1287         .mhandler.cmd_new = qmp_marshal_input_query_chardev,
1288     },
1289
1290 SQMP
1291 query-block
1292 -----------
1293
1294 Show the block devices.
1295
1296 Each block device information is stored in a json-object and the returned value
1297 is a json-array of all devices.
1298
1299 Each json-object contain the following:
1300
1301 - "device": device name (json-string)
1302 - "type": device type (json-string)
1303          - deprecated, retained for backward compatibility
1304          - Possible values: "unknown"
1305 - "removable": true if the device is removable, false otherwise (json-bool)
1306 - "locked": true if the device is locked, false otherwise (json-bool)
1307 - "tray-open": only present if removable, true if the device has a tray,
1308                and it is open (json-bool)
1309 - "inserted": only present if the device is inserted, it is a json-object
1310    containing the following:
1311          - "file": device file name (json-string)
1312          - "ro": true if read-only, false otherwise (json-bool)
1313          - "drv": driver format name (json-string)
1314              - Possible values: "blkdebug", "bochs", "cloop", "cow", "dmg",
1315                                 "file", "file", "ftp", "ftps", "host_cdrom",
1316                                 "host_device", "host_floppy", "http", "https",
1317                                 "nbd", "parallels", "qcow", "qcow2", "raw",
1318                                 "tftp", "vdi", "vmdk", "vpc", "vvfat"
1319          - "backing_file": backing file name (json-string, optional)
1320          - "backing_file_depth": number of files in the backing file chain (json-int)
1321          - "encrypted": true if encrypted, false otherwise (json-bool)
1322          - "bps": limit total bytes per second (json-int)
1323          - "bps_rd": limit read bytes per second (json-int)
1324          - "bps_wr": limit write bytes per second (json-int)
1325          - "iops": limit total I/O operations per second (json-int)
1326          - "iops_rd": limit read operations per second (json-int)
1327          - "iops_wr": limit write operations per second (json-int)
1328
1329 - "io-status": I/O operation status, only present if the device supports it
1330                and the VM is configured to stop on errors. It's always reset
1331                to "ok" when the "cont" command is issued (json_string, optional)
1332              - Possible values: "ok", "failed", "nospace"
1333
1334 Example:
1335
1336 -> { "execute": "query-block" }
1337 <- {
1338       "return":[
1339          {
1340             "io-status": "ok",
1341             "device":"ide0-hd0",
1342             "locked":false,
1343             "removable":false,
1344             "inserted":{
1345                "ro":false,
1346                "drv":"qcow2",
1347                "encrypted":false,
1348                "file":"disks/test.img",
1349                "backing_file_depth":0,
1350                "bps":1000000,
1351                "bps_rd":0,
1352                "bps_wr":0,
1353                "iops":1000000,
1354                "iops_rd":0,
1355                "iops_wr":0,
1356             },
1357             "type":"unknown"
1358          },
1359          {
1360             "io-status": "ok",
1361             "device":"ide1-cd0",
1362             "locked":false,
1363             "removable":true,
1364             "type":"unknown"
1365          },
1366          {
1367             "device":"floppy0",
1368             "locked":false,
1369             "removable":true,
1370             "type":"unknown"
1371          },
1372          {
1373             "device":"sd0",
1374             "locked":false,
1375             "removable":true,
1376             "type":"unknown"
1377          }
1378       ]
1379    }
1380
1381 EQMP
1382
1383     {
1384         .name       = "query-block",
1385         .args_type  = "",
1386         .mhandler.cmd_new = qmp_marshal_input_query_block,
1387     },
1388
1389 SQMP
1390 query-blockstats
1391 ----------------
1392
1393 Show block device statistics.
1394
1395 Each device statistic information is stored in a json-object and the returned
1396 value is a json-array of all devices.
1397
1398 Each json-object contain the following:
1399
1400 - "device": device name (json-string)
1401 - "stats": A json-object with the statistics information, it contains:
1402     - "rd_bytes": bytes read (json-int)
1403     - "wr_bytes": bytes written (json-int)
1404     - "rd_operations": read operations (json-int)
1405     - "wr_operations": write operations (json-int)
1406     - "flush_operations": cache flush operations (json-int)
1407     - "wr_total_time_ns": total time spend on writes in nano-seconds (json-int)
1408     - "rd_total_time_ns": total time spend on reads in nano-seconds (json-int)
1409     - "flush_total_time_ns": total time spend on cache flushes in nano-seconds (json-int)
1410     - "wr_highest_offset": Highest offset of a sector written since the
1411                            BlockDriverState has been opened (json-int)
1412 - "parent": Contains recursively the statistics of the underlying
1413             protocol (e.g. the host file for a qcow2 image). If there is
1414             no underlying protocol, this field is omitted
1415             (json-object, optional)
1416
1417 Example:
1418
1419 -> { "execute": "query-blockstats" }
1420 <- {
1421       "return":[
1422          {
1423             "device":"ide0-hd0",
1424             "parent":{
1425                "stats":{
1426                   "wr_highest_offset":3686448128,
1427                   "wr_bytes":9786368,
1428                   "wr_operations":751,
1429                   "rd_bytes":122567168,
1430                   "rd_operations":36772
1431                   "wr_total_times_ns":313253456
1432                   "rd_total_times_ns":3465673657
1433                   "flush_total_times_ns":49653
1434                   "flush_operations":61,
1435                }
1436             },
1437             "stats":{
1438                "wr_highest_offset":2821110784,
1439                "wr_bytes":9786368,
1440                "wr_operations":692,
1441                "rd_bytes":122739200,
1442                "rd_operations":36604
1443                "flush_operations":51,
1444                "wr_total_times_ns":313253456
1445                "rd_total_times_ns":3465673657
1446                "flush_total_times_ns":49653
1447             }
1448          },
1449          {
1450             "device":"ide1-cd0",
1451             "stats":{
1452                "wr_highest_offset":0,
1453                "wr_bytes":0,
1454                "wr_operations":0,
1455                "rd_bytes":0,
1456                "rd_operations":0
1457                "flush_operations":0,
1458                "wr_total_times_ns":0
1459                "rd_total_times_ns":0
1460                "flush_total_times_ns":0
1461             }
1462          },
1463          {
1464             "device":"floppy0",
1465             "stats":{
1466                "wr_highest_offset":0,
1467                "wr_bytes":0,
1468                "wr_operations":0,
1469                "rd_bytes":0,
1470                "rd_operations":0
1471                "flush_operations":0,
1472                "wr_total_times_ns":0
1473                "rd_total_times_ns":0
1474                "flush_total_times_ns":0
1475             }
1476          },
1477          {
1478             "device":"sd0",
1479             "stats":{
1480                "wr_highest_offset":0,
1481                "wr_bytes":0,
1482                "wr_operations":0,
1483                "rd_bytes":0,
1484                "rd_operations":0
1485                "flush_operations":0,
1486                "wr_total_times_ns":0
1487                "rd_total_times_ns":0
1488                "flush_total_times_ns":0
1489             }
1490          }
1491       ]
1492    }
1493
1494 EQMP
1495
1496     {
1497         .name       = "query-blockstats",
1498         .args_type  = "",
1499         .mhandler.cmd_new = qmp_marshal_input_query_blockstats,
1500     },
1501
1502 SQMP
1503 query-cpus
1504 ----------
1505
1506 Show CPU information.
1507
1508 Return a json-array. Each CPU is represented by a json-object, which contains:
1509
1510 - "CPU": CPU index (json-int)
1511 - "current": true if this is the current CPU, false otherwise (json-bool)
1512 - "halted": true if the cpu is halted, false otherwise (json-bool)
1513 - Current program counter. The key's name depends on the architecture:
1514      "pc": i386/x86_64 (json-int)
1515      "nip": PPC (json-int)
1516      "pc" and "npc": sparc (json-int)
1517      "PC": mips (json-int)
1518 - "thread_id": ID of the underlying host thread (json-int)
1519
1520 Example:
1521
1522 -> { "execute": "query-cpus" }
1523 <- {
1524       "return":[
1525          {
1526             "CPU":0,
1527             "current":true,
1528             "halted":false,
1529             "pc":3227107138
1530             "thread_id":3134
1531          },
1532          {
1533             "CPU":1,
1534             "current":false,
1535             "halted":true,
1536             "pc":7108165
1537             "thread_id":3135
1538          }
1539       ]
1540    }
1541
1542 EQMP
1543
1544     {
1545         .name       = "query-cpus",
1546         .args_type  = "",
1547         .mhandler.cmd_new = qmp_marshal_input_query_cpus,
1548     },
1549
1550 SQMP
1551 query-pci
1552 ---------
1553
1554 PCI buses and devices information.
1555
1556 The returned value is a json-array of all buses. Each bus is represented by
1557 a json-object, which has a key with a json-array of all PCI devices attached
1558 to it. Each device is represented by a json-object.
1559
1560 The bus json-object contains the following:
1561
1562 - "bus": bus number (json-int)
1563 - "devices": a json-array of json-objects, each json-object represents a
1564              PCI device
1565
1566 The PCI device json-object contains the following:
1567
1568 - "bus": identical to the parent's bus number (json-int)
1569 - "slot": slot number (json-int)
1570 - "function": function number (json-int)
1571 - "class_info": a json-object containing:
1572      - "desc": device class description (json-string, optional)
1573      - "class": device class number (json-int)
1574 - "id": a json-object containing:
1575      - "device": device ID (json-int)
1576      - "vendor": vendor ID (json-int)
1577 - "irq": device's IRQ if assigned (json-int, optional)
1578 - "qdev_id": qdev id string (json-string)
1579 - "pci_bridge": It's a json-object, only present if this device is a
1580                 PCI bridge, contains:
1581      - "bus": bus number (json-int)
1582      - "secondary": secondary bus number (json-int)
1583      - "subordinate": subordinate bus number (json-int)
1584      - "io_range": I/O memory range information, a json-object with the
1585                    following members:
1586                  - "base": base address, in bytes (json-int)
1587                  - "limit": limit address, in bytes (json-int)
1588      - "memory_range": memory range information, a json-object with the
1589                        following members:
1590                  - "base": base address, in bytes (json-int)
1591                  - "limit": limit address, in bytes (json-int)
1592      - "prefetchable_range": Prefetchable memory range information, a
1593                              json-object with the following members:
1594                  - "base": base address, in bytes (json-int)
1595                  - "limit": limit address, in bytes (json-int)
1596      - "devices": a json-array of PCI devices if there's any attached, each
1597                   each element is represented by a json-object, which contains
1598                   the same members of the 'PCI device json-object' described
1599                   above (optional)
1600 - "regions": a json-array of json-objects, each json-object represents a
1601              memory region of this device
1602
1603 The memory range json-object contains the following:
1604
1605 - "base": base memory address (json-int)
1606 - "limit": limit value (json-int)
1607
1608 The region json-object can be an I/O region or a memory region, an I/O region
1609 json-object contains the following:
1610
1611 - "type": "io" (json-string, fixed)
1612 - "bar": BAR number (json-int)
1613 - "address": memory address (json-int)
1614 - "size": memory size (json-int)
1615
1616 A memory region json-object contains the following:
1617
1618 - "type": "memory" (json-string, fixed)
1619 - "bar": BAR number (json-int)
1620 - "address": memory address (json-int)
1621 - "size": memory size (json-int)
1622 - "mem_type_64": true or false (json-bool)
1623 - "prefetch": true or false (json-bool)
1624
1625 Example:
1626
1627 -> { "execute": "query-pci" }
1628 <- {
1629       "return":[
1630          {
1631             "bus":0,
1632             "devices":[
1633                {
1634                   "bus":0,
1635                   "qdev_id":"",
1636                   "slot":0,
1637                   "class_info":{
1638                      "class":1536,
1639                      "desc":"Host bridge"
1640                   },
1641                   "id":{
1642                      "device":32902,
1643                      "vendor":4663
1644                   },
1645                   "function":0,
1646                   "regions":[
1647
1648                   ]
1649                },
1650                {
1651                   "bus":0,
1652                   "qdev_id":"",
1653                   "slot":1,
1654                   "class_info":{
1655                      "class":1537,
1656                      "desc":"ISA bridge"
1657                   },
1658                   "id":{
1659                      "device":32902,
1660                      "vendor":28672
1661                   },
1662                   "function":0,
1663                   "regions":[
1664
1665                   ]
1666                },
1667                {
1668                   "bus":0,
1669                   "qdev_id":"",
1670                   "slot":1,
1671                   "class_info":{
1672                      "class":257,
1673                      "desc":"IDE controller"
1674                   },
1675                   "id":{
1676                      "device":32902,
1677                      "vendor":28688
1678                   },
1679                   "function":1,
1680                   "regions":[
1681                      {
1682                         "bar":4,
1683                         "size":16,
1684                         "address":49152,
1685                         "type":"io"
1686                      }
1687                   ]
1688                },
1689                {
1690                   "bus":0,
1691                   "qdev_id":"",
1692                   "slot":2,
1693                   "class_info":{
1694                      "class":768,
1695                      "desc":"VGA controller"
1696                   },
1697                   "id":{
1698                      "device":4115,
1699                      "vendor":184
1700                   },
1701                   "function":0,
1702                   "regions":[
1703                      {
1704                         "prefetch":true,
1705                         "mem_type_64":false,
1706                         "bar":0,
1707                         "size":33554432,
1708                         "address":4026531840,
1709                         "type":"memory"
1710                      },
1711                      {
1712                         "prefetch":false,
1713                         "mem_type_64":false,
1714                         "bar":1,
1715                         "size":4096,
1716                         "address":4060086272,
1717                         "type":"memory"
1718                      },
1719                      {
1720                         "prefetch":false,
1721                         "mem_type_64":false,
1722                         "bar":6,
1723                         "size":65536,
1724                         "address":-1,
1725                         "type":"memory"
1726                      }
1727                   ]
1728                },
1729                {
1730                   "bus":0,
1731                   "qdev_id":"",
1732                   "irq":11,
1733                   "slot":4,
1734                   "class_info":{
1735                      "class":1280,
1736                      "desc":"RAM controller"
1737                   },
1738                   "id":{
1739                      "device":6900,
1740                      "vendor":4098
1741                   },
1742                   "function":0,
1743                   "regions":[
1744                      {
1745                         "bar":0,
1746                         "size":32,
1747                         "address":49280,
1748                         "type":"io"
1749                      }
1750                   ]
1751                }
1752             ]
1753          }
1754       ]
1755    }
1756
1757 Note: This example has been shortened as the real response is too long.
1758
1759 EQMP
1760
1761     {
1762         .name       = "query-pci",
1763         .args_type  = "",
1764         .mhandler.cmd_new = qmp_marshal_input_query_pci,
1765     },
1766
1767 SQMP
1768 query-kvm
1769 ---------
1770
1771 Show KVM information.
1772
1773 Return a json-object with the following information:
1774
1775 - "enabled": true if KVM support is enabled, false otherwise (json-bool)
1776 - "present": true if QEMU has KVM support, false otherwise (json-bool)
1777
1778 Example:
1779
1780 -> { "execute": "query-kvm" }
1781 <- { "return": { "enabled": true, "present": true } }
1782
1783 EQMP
1784
1785     {
1786         .name       = "query-kvm",
1787         .args_type  = "",
1788         .mhandler.cmd_new = qmp_marshal_input_query_kvm,
1789     },
1790
1791 SQMP
1792 query-status
1793 ------------
1794
1795 Return a json-object with the following information:
1796
1797 - "running": true if the VM is running, or false if it is paused (json-bool)
1798 - "singlestep": true if the VM is in single step mode,
1799                 false otherwise (json-bool)
1800 - "status": one of the following values (json-string)
1801     "debug" - QEMU is running on a debugger
1802     "inmigrate" - guest is paused waiting for an incoming migration
1803     "internal-error" - An internal error that prevents further guest
1804     execution has occurred
1805     "io-error" - the last IOP has failed and the device is configured
1806     to pause on I/O errors
1807     "paused" - guest has been paused via the 'stop' command
1808     "postmigrate" - guest is paused following a successful 'migrate'
1809     "prelaunch" - QEMU was started with -S and guest has not started
1810     "finish-migrate" - guest is paused to finish the migration process
1811     "restore-vm" - guest is paused to restore VM state
1812     "running" - guest is actively running
1813     "save-vm" - guest is paused to save the VM state
1814     "shutdown" - guest is shut down (and -no-shutdown is in use)
1815     "watchdog" - the watchdog action is configured to pause and
1816      has been triggered
1817
1818 Example:
1819
1820 -> { "execute": "query-status" }
1821 <- { "return": { "running": true, "singlestep": false, "status": "running" } }
1822
1823 EQMP
1824
1825     {
1826         .name       = "query-status",
1827         .args_type  = "",
1828         .mhandler.cmd_new = qmp_marshal_input_query_status,
1829     },
1830
1831 SQMP
1832 query-mice
1833 ----------
1834
1835 Show VM mice information.
1836
1837 Each mouse is represented by a json-object, the returned value is a json-array
1838 of all mice.
1839
1840 The mouse json-object contains the following:
1841
1842 - "name": mouse's name (json-string)
1843 - "index": mouse's index (json-int)
1844 - "current": true if this mouse is receiving events, false otherwise (json-bool)
1845 - "absolute": true if the mouse generates absolute input events (json-bool)
1846
1847 Example:
1848
1849 -> { "execute": "query-mice" }
1850 <- {
1851       "return":[
1852          {
1853             "name":"QEMU Microsoft Mouse",
1854             "index":0,
1855             "current":false,
1856             "absolute":false
1857          },
1858          {
1859             "name":"QEMU PS/2 Mouse",
1860             "index":1,
1861             "current":true,
1862             "absolute":true
1863          }
1864       ]
1865    }
1866
1867 EQMP
1868
1869     {
1870         .name       = "query-mice",
1871         .args_type  = "",
1872         .mhandler.cmd_new = qmp_marshal_input_query_mice,
1873     },
1874
1875 SQMP
1876 query-vnc
1877 ---------
1878
1879 Show VNC server information.
1880
1881 Return a json-object with server information. Connected clients are returned
1882 as a json-array of json-objects.
1883
1884 The main json-object contains the following:
1885
1886 - "enabled": true or false (json-bool)
1887 - "host": server's IP address (json-string)
1888 - "family": address family (json-string)
1889          - Possible values: "ipv4", "ipv6", "unix", "unknown"
1890 - "service": server's port number (json-string)
1891 - "auth": authentication method (json-string)
1892          - Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight",
1893                             "tls", "ultra", "unknown", "vencrypt", "vencrypt",
1894                             "vencrypt+plain", "vencrypt+tls+none",
1895                             "vencrypt+tls+plain", "vencrypt+tls+sasl",
1896                             "vencrypt+tls+vnc", "vencrypt+x509+none",
1897                             "vencrypt+x509+plain", "vencrypt+x509+sasl",
1898                             "vencrypt+x509+vnc", "vnc"
1899 - "clients": a json-array of all connected clients
1900
1901 Clients are described by a json-object, each one contain the following:
1902
1903 - "host": client's IP address (json-string)
1904 - "family": address family (json-string)
1905          - Possible values: "ipv4", "ipv6", "unix", "unknown"
1906 - "service": client's port number (json-string)
1907 - "x509_dname": TLS dname (json-string, optional)
1908 - "sasl_username": SASL username (json-string, optional)
1909
1910 Example:
1911
1912 -> { "execute": "query-vnc" }
1913 <- {
1914       "return":{
1915          "enabled":true,
1916          "host":"0.0.0.0",
1917          "service":"50402",
1918          "auth":"vnc",
1919          "family":"ipv4",
1920          "clients":[
1921             {
1922                "host":"127.0.0.1",
1923                "service":"50401",
1924                "family":"ipv4"
1925             }
1926          ]
1927       }
1928    }
1929
1930 EQMP
1931
1932     {
1933         .name       = "query-vnc",
1934         .args_type  = "",
1935         .mhandler.cmd_new = qmp_marshal_input_query_vnc,
1936     },
1937
1938 SQMP
1939 query-spice
1940 -----------
1941
1942 Show SPICE server information.
1943
1944 Return a json-object with server information. Connected clients are returned
1945 as a json-array of json-objects.
1946
1947 The main json-object contains the following:
1948
1949 - "enabled": true or false (json-bool)
1950 - "host": server's IP address (json-string)
1951 - "port": server's port number (json-int, optional)
1952 - "tls-port": server's port number (json-int, optional)
1953 - "auth": authentication method (json-string)
1954          - Possible values: "none", "spice"
1955 - "channels": a json-array of all active channels clients
1956
1957 Channels are described by a json-object, each one contain the following:
1958
1959 - "host": client's IP address (json-string)
1960 - "family": address family (json-string)
1961          - Possible values: "ipv4", "ipv6", "unix", "unknown"
1962 - "port": client's port number (json-string)
1963 - "connection-id": spice connection id.  All channels with the same id
1964                    belong to the same spice session (json-int)
1965 - "channel-type": channel type.  "1" is the main control channel, filter for
1966                   this one if you want track spice sessions only (json-int)
1967 - "channel-id": channel id.  Usually "0", might be different needed when
1968                 multiple channels of the same type exist, such as multiple
1969                 display channels in a multihead setup (json-int)
1970 - "tls": whevener the channel is encrypted (json-bool)
1971
1972 Example:
1973
1974 -> { "execute": "query-spice" }
1975 <- {
1976       "return": {
1977          "enabled": true,
1978          "auth": "spice",
1979          "port": 5920,
1980          "tls-port": 5921,
1981          "host": "0.0.0.0",
1982          "channels": [
1983             {
1984                "port": "54924",
1985                "family": "ipv4",
1986                "channel-type": 1,
1987                "connection-id": 1804289383,
1988                "host": "127.0.0.1",
1989                "channel-id": 0,
1990                "tls": true
1991             },
1992             {
1993                "port": "36710",
1994                "family": "ipv4",
1995                "channel-type": 4,
1996                "connection-id": 1804289383,
1997                "host": "127.0.0.1",
1998                "channel-id": 0,
1999                "tls": false
2000             },
2001             [ ... more channels follow ... ]
2002          ]
2003       }
2004    }
2005
2006 EQMP
2007
2008 #if defined(CONFIG_SPICE)
2009     {
2010         .name       = "query-spice",
2011         .args_type  = "",
2012         .mhandler.cmd_new = qmp_marshal_input_query_spice,
2013     },
2014 #endif
2015
2016 SQMP
2017 query-name
2018 ----------
2019
2020 Show VM name.
2021
2022 Return a json-object with the following information:
2023
2024 - "name": VM's name (json-string, optional)
2025
2026 Example:
2027
2028 -> { "execute": "query-name" }
2029 <- { "return": { "name": "qemu-name" } }
2030
2031 EQMP
2032
2033     {
2034         .name       = "query-name",
2035         .args_type  = "",
2036         .mhandler.cmd_new = qmp_marshal_input_query_name,
2037     },
2038
2039 SQMP
2040 query-uuid
2041 ----------
2042
2043 Show VM UUID.
2044
2045 Return a json-object with the following information:
2046
2047 - "UUID": Universally Unique Identifier (json-string)
2048
2049 Example:
2050
2051 -> { "execute": "query-uuid" }
2052 <- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
2053
2054 EQMP
2055
2056     {
2057         .name       = "query-uuid",
2058         .args_type  = "",
2059         .mhandler.cmd_new = qmp_marshal_input_query_uuid,
2060     },
2061
2062 SQMP
2063 query-migrate
2064 -------------
2065
2066 Migration status.
2067
2068 Return a json-object. If migration is active there will be another json-object
2069 with RAM migration status and if block migration is active another one with
2070 block migration status.
2071
2072 The main json-object contains the following:
2073
2074 - "status": migration status (json-string)
2075      - Possible values: "active", "completed", "failed", "cancelled"
2076 - "ram": only present if "status" is "active", it is a json-object with the
2077   following RAM information (in bytes):
2078          - "transferred": amount transferred (json-int)
2079          - "remaining": amount remaining (json-int)
2080          - "total": total (json-int)
2081 - "disk": only present if "status" is "active" and it is a block migration,
2082   it is a json-object with the following disk information (in bytes):
2083          - "transferred": amount transferred (json-int)
2084          - "remaining": amount remaining (json-int)
2085          - "total": total (json-int)
2086
2087 Examples:
2088
2089 1. Before the first migration
2090
2091 -> { "execute": "query-migrate" }
2092 <- { "return": {} }
2093
2094 2. Migration is done and has succeeded
2095
2096 -> { "execute": "query-migrate" }
2097 <- { "return": { "status": "completed" } }
2098
2099 3. Migration is done and has failed
2100
2101 -> { "execute": "query-migrate" }
2102 <- { "return": { "status": "failed" } }
2103
2104 4. Migration is being performed and is not a block migration:
2105
2106 -> { "execute": "query-migrate" }
2107 <- {
2108       "return":{
2109          "status":"active",
2110          "ram":{
2111             "transferred":123,
2112             "remaining":123,
2113             "total":246
2114          }
2115       }
2116    }
2117
2118 5. Migration is being performed and is a block migration:
2119
2120 -> { "execute": "query-migrate" }
2121 <- {
2122       "return":{
2123          "status":"active",
2124          "ram":{
2125             "total":1057024,
2126             "remaining":1053304,
2127             "transferred":3720
2128          },
2129          "disk":{
2130             "total":20971520,
2131             "remaining":20880384,
2132             "transferred":91136
2133          }
2134       }
2135    }
2136
2137 EQMP
2138
2139     {
2140         .name       = "query-migrate",
2141         .args_type  = "",
2142         .mhandler.cmd_new = qmp_marshal_input_query_migrate,
2143     },
2144
2145 SQMP
2146 query-balloon
2147 -------------
2148
2149 Show balloon information.
2150
2151 Make an asynchronous request for balloon info. When the request completes a
2152 json-object will be returned containing the following data:
2153
2154 - "actual": current balloon value in bytes (json-int)
2155 - "mem_swapped_in": Amount of memory swapped in bytes (json-int, optional)
2156 - "mem_swapped_out": Amount of memory swapped out in bytes (json-int, optional)
2157 - "major_page_faults": Number of major faults (json-int, optional)
2158 - "minor_page_faults": Number of minor faults (json-int, optional)
2159 - "free_mem": Total amount of free and unused memory in
2160               bytes (json-int, optional)
2161 - "total_mem": Total amount of available memory in bytes (json-int, optional)
2162
2163 Example:
2164
2165 -> { "execute": "query-balloon" }
2166 <- {
2167       "return":{
2168          "actual":1073741824,
2169          "mem_swapped_in":0,
2170          "mem_swapped_out":0,
2171          "major_page_faults":142,
2172          "minor_page_faults":239245,
2173          "free_mem":1014185984,
2174          "total_mem":1044668416
2175       }
2176    }
2177
2178 EQMP
2179
2180     {
2181         .name       = "query-balloon",
2182         .args_type  = "",
2183         .mhandler.cmd_new = qmp_marshal_input_query_balloon,
2184     },
2185
2186     {
2187         .name       = "query-block-jobs",
2188         .args_type  = "",
2189         .mhandler.cmd_new = qmp_marshal_input_query_block_jobs,
2190     },
2191
2192     {
2193         .name       = "qom-list",
2194         .args_type  = "path:s",
2195         .mhandler.cmd_new = qmp_marshal_input_qom_list,
2196     },
2197
2198     {
2199         .name       = "qom-set",
2200         .args_type  = "path:s,property:s,value:q",
2201         .mhandler.cmd_new = qmp_qom_set,
2202     },
2203
2204     {
2205         .name       = "qom-get",
2206         .args_type  = "path:s,property:s",
2207         .mhandler.cmd_new = qmp_qom_get,
2208     },
2209
2210     {
2211         .name       = "change-vnc-password",
2212         .args_type  = "password:s",
2213         .mhandler.cmd_new = qmp_marshal_input_change_vnc_password,
2214     },
2215     {
2216         .name       = "qom-list-types",
2217         .args_type  = "implements:s?,abstract:b?",
2218         .mhandler.cmd_new = qmp_marshal_input_qom_list_types,
2219     },