qapi/char.json

   1 # -*- Mode: Python -*-
   2 #
   3
   4 ##
   5 # = Character devices
   6 ##
   7
   8 { 'include': 'sockets.json' }
   9
  10 ##
  11 # @ChardevInfo:
  12 #
  13 # Information about a character device.
  14 #
  15 # @label: the label of the character device
  16 #
  17 # @filename: the filename of the character device
  18 #
  19 # @frontend-open: shows whether the frontend device attached to this backend
  20 #                 (eg. with the chardev=... option) is in open or closed state
  21 #                 (since 2.1)
  22 #
  23 # Notes: @filename is encoded using the QEMU command line character device
  24 #        encoding.  See the QEMU man page for details.
  25 #
  26 # Since: 0.14.0
  27 ##
  28 { 'struct': 'ChardevInfo',
  29   'data': { 'label': 'str',
  30             'filename': 'str',
  31             'frontend-open': 'bool' } }
  32
  33 ##
  34 # @query-chardev:
  35 #
  36 # Returns information about current character devices.
  37 #
  38 # Returns: a list of @ChardevInfo
  39 #
  40 # Since: 0.14.0
  41 #
  42 # Example:
  43 #
  44 # -> { "execute": "query-chardev" }
  45 # <- {
  46 #       "return": [
  47 #          {
  48 #             "label": "charchannel0",
  49 #             "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.agent,server",
  50 #             "frontend-open": false
  51 #          },
  52 #          {
  53 #             "label": "charmonitor",
  54 #             "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.monitor,server",
  55 #             "frontend-open": true
  56 #          },
  57 #          {
  58 #             "label": "charserial0",
  59 #             "filename": "pty:/dev/pts/2",
  60 #             "frontend-open": true
  61 #          }
  62 #       ]
  63 #    }
  64 #
  65 ##
  66 { 'command': 'query-chardev', 'returns': ['ChardevInfo'],
  67   'allow-preconfig': true }
  68
  69 ##
  70 # @ChardevBackendInfo:
  71 #
  72 # Information about a character device backend
  73 #
  74 # @name: The backend name
  75 #
  76 # Since: 2.0
  77 ##
  78 { 'struct': 'ChardevBackendInfo', 'data': {'name': 'str'} }
  79
  80 ##
  81 # @query-chardev-backends:
  82 #
  83 # Returns information about character device backends.
  84 #
  85 # Returns: a list of @ChardevBackendInfo
  86 #
  87 # Since: 2.0
  88 #
  89 # Example:
  90 #
  91 # -> { "execute": "query-chardev-backends" }
  92 # <- {
  93 #       "return":[
  94 #          {
  95 #             "name":"udp"
  96 #          },
  97 #          {
  98 #             "name":"tcp"
  99 #          },
 100 #          {
 101 #             "name":"unix"
 102 #          },
 103 #          {
 104 #             "name":"spiceport"
 105 #          }
 106 #       ]
 107 #    }
 108 #
 109 ##
 110 { 'command': 'query-chardev-backends', 'returns': ['ChardevBackendInfo'] }
 111
 112 ##
 113 # @DataFormat:
 114 #
 115 # An enumeration of data format.
 116 #
 117 # @utf8: Data is a UTF-8 string (RFC 3629)
 118 #
 119 # @base64: Data is Base64 encoded binary (RFC 3548)
 120 #
 121 # Since: 1.4
 122 ##
 123 { 'enum': 'DataFormat',
 124   'data': [ 'utf8', 'base64' ] }
 125
 126 ##
 127 # @ringbuf-write:
 128 #
 129 # Write to a ring buffer character device.
 130 #
 131 # @device: the ring buffer character device name
 132 #
 133 # @data: data to write
 134 #
 135 # @format: data encoding (default 'utf8').
 136 #          - base64: data must be base64 encoded text.  Its binary
 137 #            decoding gets written.
 138 #          - utf8: data's UTF-8 encoding is written
 139 #          - data itself is always Unicode regardless of format, like
 140 #            any other string.
 141 #
 142 # Returns: Nothing on success
 143 #
 144 # Since: 1.4
 145 #
 146 # Example:
 147 #
 148 # -> { "execute": "ringbuf-write",
 149 #      "arguments": { "device": "foo",
 150 #                     "data": "abcdefgh",
 151 #                     "format": "utf8" } }
 152 # <- { "return": {} }
 153 #
 154 ##
 155 { 'command': 'ringbuf-write',
 156   'data': { 'device': 'str',
 157             'data': 'str',
 158            '*format': 'DataFormat'} }
 159
 160 ##
 161 # @ringbuf-read:
 162 #
 163 # Read from a ring buffer character device.
 164 #
 165 # @device: the ring buffer character device name
 166 #
 167 # @size: how many bytes to read at most
 168 #
 169 # @format: data encoding (default 'utf8').
 170 #          - base64: the data read is returned in base64 encoding.
 171 #          - utf8: the data read is interpreted as UTF-8.
 172 #            Bug: can screw up when the buffer contains invalid UTF-8
 173 #            sequences, NUL characters, after the ring buffer lost
 174 #            data, and when reading stops because the size limit is
 175 #            reached.
 176 #          - The return value is always Unicode regardless of format,
 177 #            like any other string.
 178 #
 179 # Returns: data read from the device
 180 #
 181 # Since: 1.4
 182 #
 183 # Example:
 184 #
 185 # -> { "execute": "ringbuf-read",
 186 #      "arguments": { "device": "foo",
 187 #                     "size": 1000,
 188 #                     "format": "utf8" } }
 189 # <- { "return": "abcdefgh" }
 190 #
 191 ##
 192 { 'command': 'ringbuf-read',
 193   'data': {'device': 'str', 'size': 'int', '*format': 'DataFormat'},
 194   'returns': 'str' }
 195
 196 ##
 197 # @ChardevCommon:
 198 #
 199 # Configuration shared across all chardev backends
 200 #
 201 # @logfile: The name of a logfile to save output
 202 # @logappend: true to append instead of truncate
 203 #             (default to false to truncate)
 204 #
 205 # Since: 2.6
 206 ##
 207 { 'struct': 'ChardevCommon',
 208   'data': { '*logfile': 'str',
 209             '*logappend': 'bool' } }
 210
 211 ##
 212 # @ChardevFile:
 213 #
 214 # Configuration info for file chardevs.
 215 #
 216 # @in:  The name of the input file
 217 # @out: The name of the output file
 218 # @append: Open the file in append mode (default false to
 219 #          truncate) (Since 2.6)
 220 #
 221 # Since: 1.4
 222 ##
 223 { 'struct': 'ChardevFile',
 224   'data': { '*in': 'str',
 225             'out': 'str',
 226             '*append': 'bool' },
 227   'base': 'ChardevCommon' }
 228
 229 ##
 230 # @ChardevHostdev:
 231 #
 232 # Configuration info for device and pipe chardevs.
 233 #
 234 # @device: The name of the special file for the device,
 235 #          i.e. /dev/ttyS0 on Unix or COM1: on Windows
 236 #
 237 # Since: 1.4
 238 ##
 239 { 'struct': 'ChardevHostdev',
 240   'data': { 'device': 'str' },
 241   'base': 'ChardevCommon' }
 242
 243 ##
 244 # @ChardevSocket:
 245 #
 246 # Configuration info for (stream) socket chardevs.
 247 #
 248 # @addr: socket address to listen on (server=true)
 249 #        or connect to (server=false)
 250 # @tls-creds: the ID of the TLS credentials object (since 2.6)
 251 # @tls-authz: the ID of the QAuthZ authorization object against which
 252 #             the client's x509 distinguished name will be validated. This
 253 #             object is only resolved at time of use, so can be deleted
 254 #             and recreated on the fly while the chardev server is active.
 255 #             If missing, it will default to denying access (since 4.0)
 256 # @server: create server socket (default: true)
 257 # @wait: wait for incoming connection on server
 258 #        sockets (default: false).
 259 # @nodelay: set TCP_NODELAY socket option (default: false)
 260 # @telnet: enable telnet protocol on server
 261 #          sockets (default: false)
 262 # @tn3270: enable tn3270 protocol on server
 263 #          sockets (default: false) (Since: 2.10)
 264 # @websocket: enable websocket protocol on server
 265 #           sockets (default: false) (Since: 3.1)
 266 # @reconnect: For a client socket, if a socket is disconnected,
 267 #          then attempt a reconnect after the given number of seconds.
 268 #          Setting this to zero disables this function. (default: 0)
 269 #          (Since: 2.2)
 270 #
 271 # Since: 1.4
 272 ##
 273 { 'struct': 'ChardevSocket',
 274   'data': { 'addr': 'SocketAddressLegacy',
 275             '*tls-creds': 'str',
 276             '*tls-authz'  : 'str',
 277             '*server': 'bool',
 278             '*wait': 'bool',
 279             '*nodelay': 'bool',
 280             '*telnet': 'bool',
 281             '*tn3270': 'bool',
 282             '*websocket': 'bool',
 283             '*reconnect': 'int' },
 284   'base': 'ChardevCommon' }
 285
 286 ##
 287 # @ChardevUdp:
 288 #
 289 # Configuration info for datagram socket chardevs.
 290 #
 291 # @remote: remote address
 292 # @local: local address
 293 #
 294 # Since: 1.5
 295 ##
 296 { 'struct': 'ChardevUdp',
 297   'data': { 'remote': 'SocketAddressLegacy',
 298             '*local': 'SocketAddressLegacy' },
 299   'base': 'ChardevCommon' }
 300
 301 ##
 302 # @ChardevMux:
 303 #
 304 # Configuration info for mux chardevs.
 305 #
 306 # @chardev: name of the base chardev.
 307 #
 308 # Since: 1.5
 309 ##
 310 { 'struct': 'ChardevMux',
 311   'data': { 'chardev': 'str' },
 312   'base': 'ChardevCommon' }
 313
 314 ##
 315 # @ChardevStdio:
 316 #
 317 # Configuration info for stdio chardevs.
 318 #
 319 # @signal: Allow signals (such as SIGINT triggered by ^C)
 320 #          be delivered to qemu.  Default: true in -nographic mode,
 321 #          false otherwise.
 322 #
 323 # Since: 1.5
 324 ##
 325 { 'struct': 'ChardevStdio',
 326   'data': { '*signal': 'bool' },
 327   'base': 'ChardevCommon' }
 328
 329
 330 ##
 331 # @ChardevSpiceChannel:
 332 #
 333 # Configuration info for spice vm channel chardevs.
 334 #
 335 # @type: kind of channel (for example vdagent).
 336 #
 337 # Since: 1.5
 338 ##
 339 { 'struct': 'ChardevSpiceChannel',
 340   'data': { 'type': 'str' },
 341   'base': 'ChardevCommon',
 342   'if': 'defined(CONFIG_SPICE)' }
 343
 344 ##
 345 # @ChardevSpicePort:
 346 #
 347 # Configuration info for spice port chardevs.
 348 #
 349 # @fqdn: name of the channel (see docs/spice-port-fqdn.txt)
 350 #
 351 # Since: 1.5
 352 ##
 353 { 'struct': 'ChardevSpicePort',
 354   'data': { 'fqdn': 'str' },
 355   'base': 'ChardevCommon',
 356   'if': 'defined(CONFIG_SPICE)' }
 357
 358 ##
 359 # @ChardevVC:
 360 #
 361 # Configuration info for virtual console chardevs.
 362 #
 363 # @width:  console width,  in pixels
 364 # @height: console height, in pixels
 365 # @cols:   console width,  in chars
 366 # @rows:   console height, in chars
 367 #
 368 # Since: 1.5
 369 ##
 370 { 'struct': 'ChardevVC',
 371   'data': { '*width': 'int',
 372             '*height': 'int',
 373             '*cols': 'int',
 374             '*rows': 'int' },
 375   'base': 'ChardevCommon' }
 376
 377 ##
 378 # @ChardevRingbuf:
 379 #
 380 # Configuration info for ring buffer chardevs.
 381 #
 382 # @size: ring buffer size, must be power of two, default is 65536
 383 #
 384 # Since: 1.5
 385 ##
 386 { 'struct': 'ChardevRingbuf',
 387   'data': { '*size': 'int' },
 388   'base': 'ChardevCommon' }
 389
 390 ##
 391 # @ChardevBackend:
 392 #
 393 # Configuration info for the new chardev backend.
 394 #
 395 # Since: 1.4 (testdev since 2.2, wctablet since 2.9)
 396 ##
 397 { 'union': 'ChardevBackend',
 398   'data': { 'file': 'ChardevFile',
 399             'serial': 'ChardevHostdev',
 400             'parallel': 'ChardevHostdev',
 401             'pipe': 'ChardevHostdev',
 402             'socket': 'ChardevSocket',
 403             'udp': 'ChardevUdp',
 404             'pty': 'ChardevCommon',
 405             'null': 'ChardevCommon',
 406             'mux': 'ChardevMux',
 407             'msmouse': 'ChardevCommon',
 408             'wctablet': 'ChardevCommon',
 409             'braille': 'ChardevCommon',
 410             'testdev': 'ChardevCommon',
 411             'stdio': 'ChardevStdio',
 412             'console': 'ChardevCommon',
 413             'spicevmc': { 'type': 'ChardevSpiceChannel',
 414                           'if': 'defined(CONFIG_SPICE)' },
 415             'spiceport': { 'type': 'ChardevSpicePort',
 416                            'if': 'defined(CONFIG_SPICE)' },
 417             'vc': 'ChardevVC',
 418             'ringbuf': 'ChardevRingbuf',
 419             # next one is just for compatibility
 420             'memory': 'ChardevRingbuf' } }
 421
 422 ##
 423 # @ChardevReturn:
 424 #
 425 # Return info about the chardev backend just created.
 426 #
 427 # @pty: name of the slave pseudoterminal device, present if
 428 #       and only if a chardev of type 'pty' was created
 429 #
 430 # Since: 1.4
 431 ##
 432 { 'struct' : 'ChardevReturn',
 433   'data': { '*pty': 'str' } }
 434
 435 ##
 436 # @chardev-add:
 437 #
 438 # Add a character device backend
 439 #
 440 # @id: the chardev's ID, must be unique
 441 # @backend: backend type and parameters
 442 #
 443 # Returns: ChardevReturn.
 444 #
 445 # Since: 1.4
 446 #
 447 # Example:
 448 #
 449 # -> { "execute" : "chardev-add",
 450 #      "arguments" : { "id" : "foo",
 451 #                      "backend" : { "type" : "null", "data" : {} } } }
 452 # <- { "return": {} }
 453 #
 454 # -> { "execute" : "chardev-add",
 455 #      "arguments" : { "id" : "bar",
 456 #                      "backend" : { "type" : "file",
 457 #                                    "data" : { "out" : "/tmp/bar.log" } } } }
 458 # <- { "return": {} }
 459 #
 460 # -> { "execute" : "chardev-add",
 461 #      "arguments" : { "id" : "baz",
 462 #                      "backend" : { "type" : "pty", "data" : {} } } }
 463 # <- { "return": { "pty" : "/dev/pty/42" } }
 464 #
 465 ##
 466 { 'command': 'chardev-add',
 467   'data': { 'id': 'str',
 468             'backend': 'ChardevBackend' },
 469   'returns': 'ChardevReturn' }
 470
 471 ##
 472 # @chardev-change:
 473 #
 474 # Change a character device backend
 475 #
 476 # @id: the chardev's ID, must exist
 477 # @backend: new backend type and parameters
 478 #
 479 # Returns: ChardevReturn.
 480 #
 481 # Since: 2.10
 482 #
 483 # Example:
 484 #
 485 # -> { "execute" : "chardev-change",
 486 #      "arguments" : { "id" : "baz",
 487 #                      "backend" : { "type" : "pty", "data" : {} } } }
 488 # <- { "return": { "pty" : "/dev/pty/42" } }
 489 #
 490 # -> {"execute" : "chardev-change",
 491 #     "arguments" : {
 492 #         "id" : "charchannel2",
 493 #         "backend" : {
 494 #             "type" : "socket",
 495 #             "data" : {
 496 #                 "addr" : {
 497 #                     "type" : "unix" ,
 498 #                     "data" : {
 499 #                         "path" : "/tmp/charchannel2.socket"
 500 #                     }
 501 #                  },
 502 #                  "server" : true,
 503 #                  "wait" : false }}}}
 504 # <- {"return": {}}
 505 #
 506 ##
 507 { 'command': 'chardev-change',
 508   'data': { 'id': 'str',
 509             'backend': 'ChardevBackend' },
 510   'returns': 'ChardevReturn' }
 511
 512 ##
 513 # @chardev-remove:
 514 #
 515 # Remove a character device backend
 516 #
 517 # @id: the chardev's ID, must exist and not be in use
 518 #
 519 # Returns: Nothing on success
 520 #
 521 # Since: 1.4
 522 #
 523 # Example:
 524 #
 525 # -> { "execute": "chardev-remove", "arguments": { "id" : "foo" } }
 526 # <- { "return": {} }
 527 #
 528 ##
 529 { 'command': 'chardev-remove',
 530   'data': { 'id': 'str' } }
 531
 532 ##
 533 # @chardev-send-break:
 534 #
 535 # Send a break to a character device
 536 #
 537 # @id: the chardev's ID, must exist
 538 #
 539 # Returns: Nothing on success
 540 #
 541 # Since: 2.10
 542 #
 543 # Example:
 544 #
 545 # -> { "execute": "chardev-send-break", "arguments": { "id" : "foo" } }
 546 # <- { "return": {} }
 547 #
 548 ##
 549 { 'command': 'chardev-send-break',
 550   'data': { 'id': 'str' } }
 551
 552 ##
 553 # @VSERPORT_CHANGE:
 554 #
 555 # Emitted when the guest opens or closes a virtio-serial port.
 556 #
 557 # @id: device identifier of the virtio-serial port
 558 #
 559 # @open: true if the guest has opened the virtio-serial port
 560 #
 561 # Since: 2.1
 562 #
 563 # Example:
 564 #
 565 # <- { "event": "VSERPORT_CHANGE",
 566 #      "data": { "id": "channel0", "open": true },
 567 #      "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
 568 #
 569 ##
 570 { 'event': 'VSERPORT_CHANGE',
 571   'data': { 'id': 'str',
 572             'open': 'bool' } }