hmp-commands.hx

   1 HXCOMM Use DEFHEADING() to define headings in both help text and texi
   2 HXCOMM Text between STEXI and ETEXI are copied to texi version and
   3 HXCOMM discarded from C version
   4 HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
   5 HXCOMM monitor commands
   6 HXCOMM HXCOMM can be used for comments, discarded from both texi and C
   7
   8 STEXI
   9 @table @option
  10 ETEXI
  11
  12     {
  13         .name       = "help|?",
  14         .args_type  = "name:S?",
  15         .params     = "[cmd]",
  16         .help       = "show the help",
  17         .cmd        = do_help_cmd,
  18     },
  19
  20 STEXI
  21 @item help or ? [@var{cmd}]
  22 @findex help
  23 Show the help for all commands or just for command @var{cmd}.
  24 ETEXI
  25
  26     {
  27         .name       = "commit",
  28         .args_type  = "device:B",
  29         .params     = "device|all",
  30         .help       = "commit changes to the disk images (if -snapshot is used) or backing files",
  31         .cmd        = hmp_commit,
  32     },
  33
  34 STEXI
  35 @item commit
  36 @findex commit
  37 Commit changes to the disk images (if -snapshot is used) or backing files.
  38 If the backing file is smaller than the snapshot, then the backing file will be
  39 resized to be the same size as the snapshot.  If the snapshot is smaller than
  40 the backing file, the backing file will not be truncated.  If you want the
  41 backing file to match the size of the smaller snapshot, you can safely truncate
  42 it yourself once the commit operation successfully completes.
  43 ETEXI
  44
  45     {
  46         .name       = "q|quit",
  47         .args_type  = "",
  48         .params     = "",
  49         .help       = "quit the emulator",
  50         .cmd        = hmp_quit,
  51     },
  52
  53 STEXI
  54 @item q or quit
  55 @findex quit
  56 Quit the emulator.
  57 ETEXI
  58
  59     {
  60         .name       = "block_resize",
  61         .args_type  = "device:B,size:o",
  62         .params     = "device size",
  63         .help       = "resize a block image",
  64         .cmd        = hmp_block_resize,
  65     },
  66
  67 STEXI
  68 @item block_resize
  69 @findex block_resize
  70 Resize a block image while a guest is running.  Usually requires guest
  71 action to see the updated size.  Resize to a lower size is supported,
  72 but should be used with extreme caution.  Note that this command only
  73 resizes image files, it can not resize block devices like LVM volumes.
  74 ETEXI
  75
  76     {
  77         .name       = "block_stream",
  78         .args_type  = "device:B,speed:o?,base:s?",
  79         .params     = "device [speed [base]]",
  80         .help       = "copy data from a backing file into a block device",
  81         .cmd        = hmp_block_stream,
  82     },
  83
  84 STEXI
  85 @item block_stream
  86 @findex block_stream
  87 Copy data from a backing file into a block device.
  88 ETEXI
  89
  90     {
  91         .name       = "block_job_set_speed",
  92         .args_type  = "device:B,speed:o",
  93         .params     = "device speed",
  94         .help       = "set maximum speed for a background block operation",
  95         .cmd        = hmp_block_job_set_speed,
  96     },
  97
  98 STEXI
  99 @item block_job_set_speed
 100 @findex block_job_set_speed
 101 Set maximum speed for a background block operation.
 102 ETEXI
 103
 104     {
 105         .name       = "block_job_cancel",
 106         .args_type  = "force:-f,device:B",
 107         .params     = "[-f] device",
 108         .help       = "stop an active background block operation (use -f"
 109                       "\n\t\t\t if you want to abort the operation immediately"
 110                       "\n\t\t\t instead of keep running until data is in sync)",
 111         .cmd        = hmp_block_job_cancel,
 112     },
 113
 114 STEXI
 115 @item block_job_cancel
 116 @findex block_job_cancel
 117 Stop an active background block operation (streaming, mirroring).
 118 ETEXI
 119
 120     {
 121         .name       = "block_job_complete",
 122         .args_type  = "device:B",
 123         .params     = "device",
 124         .help       = "stop an active background block operation",
 125         .cmd        = hmp_block_job_complete,
 126     },
 127
 128 STEXI
 129 @item block_job_complete
 130 @findex block_job_complete
 131 Manually trigger completion of an active background block operation.
 132 For mirroring, this will switch the device to the destination path.
 133 ETEXI
 134
 135     {
 136         .name       = "block_job_pause",
 137         .args_type  = "device:B",
 138         .params     = "device",
 139         .help       = "pause an active background block operation",
 140         .cmd        = hmp_block_job_pause,
 141     },
 142
 143 STEXI
 144 @item block_job_pause
 145 @findex block_job_pause
 146 Pause an active block streaming operation.
 147 ETEXI
 148
 149     {
 150         .name       = "block_job_resume",
 151         .args_type  = "device:B",
 152         .params     = "device",
 153         .help       = "resume a paused background block operation",
 154         .cmd        = hmp_block_job_resume,
 155     },
 156
 157 STEXI
 158 @item block_job_resume
 159 @findex block_job_resume
 160 Resume a paused block streaming operation.
 161 ETEXI
 162
 163     {
 164         .name       = "eject",
 165         .args_type  = "force:-f,device:B",
 166         .params     = "[-f] device",
 167         .help       = "eject a removable medium (use -f to force it)",
 168         .cmd        = hmp_eject,
 169     },
 170
 171 STEXI
 172 @item eject [-f] @var{device}
 173 @findex eject
 174 Eject a removable medium (use -f to force it).
 175 ETEXI
 176
 177     {
 178         .name       = "drive_del",
 179         .args_type  = "id:B",
 180         .params     = "device",
 181         .help       = "remove host block device",
 182         .cmd        = hmp_drive_del,
 183     },
 184
 185 STEXI
 186 @item drive_del @var{device}
 187 @findex drive_del
 188 Remove host block device.  The result is that guest generated IO is no longer
 189 submitted against the host device underlying the disk.  Once a drive has
 190 been deleted, the QEMU Block layer returns -EIO which results in IO
 191 errors in the guest for applications that are reading/writing to the device.
 192 These errors are always reported to the guest, regardless of the drive's error
 193 actions (drive options rerror, werror).
 194 ETEXI
 195
 196     {
 197         .name       = "change",
 198         .args_type  = "device:B,target:F,arg:s?,read-only-mode:s?",
 199         .params     = "device filename [format [read-only-mode]]",
 200         .help       = "change a removable medium, optional format",
 201         .cmd        = hmp_change,
 202     },
 203
 204 STEXI
 205 @item change @var{device} @var{setting}
 206 @findex change
 207 Change the configuration of a device.
 208
 209 @table @option
 210 @item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]]
 211 Change the medium for a removable disk device to point to @var{filename}. eg
 212
 213 @example
 214 (qemu) change ide1-cd0 /path/to/some.iso
 215 @end example
 216
 217 @var{format} is optional.
 218
 219 @var{read-only-mode} may be used to change the read-only status of the device.
 220 It accepts the following values:
 221
 222 @table @var
 223 @item retain
 224 Retains the current status; this is the default.
 225
 226 @item read-only
 227 Makes the device read-only.
 228
 229 @item read-write
 230 Makes the device writable.
 231 @end table
 232
 233 @item change vnc @var{display},@var{options}
 234 Change the configuration of the VNC server. The valid syntax for @var{display}
 235 and @var{options} are described at @ref{sec_invocation}. eg
 236
 237 @example
 238 (qemu) change vnc localhost:1
 239 @end example
 240
 241 @item change vnc password [@var{password}]
 242
 243 Change the password associated with the VNC server. If the new password is not
 244 supplied, the monitor will prompt for it to be entered. VNC passwords are only
 245 significant up to 8 letters. eg
 246
 247 @example
 248 (qemu) change vnc password
 249 Password: ********
 250 @end example
 251
 252 @end table
 253 ETEXI
 254
 255     {
 256         .name       = "screendump",
 257         .args_type  = "filename:F,device:s?,head:i?",
 258         .params     = "filename [device [head]]",
 259         .help       = "save screen from head 'head' of display device 'device' "
 260                       "into PPM image 'filename'",
 261         .cmd        = hmp_screendump,
 262     },
 263
 264 STEXI
 265 @item screendump @var{filename}
 266 @findex screendump
 267 Save screen into PPM image @var{filename}.
 268 ETEXI
 269
 270     {
 271         .name       = "logfile",
 272         .args_type  = "filename:F",
 273         .params     = "filename",
 274         .help       = "output logs to 'filename'",
 275         .cmd        = hmp_logfile,
 276     },
 277
 278 STEXI
 279 @item logfile @var{filename}
 280 @findex logfile
 281 Output logs to @var{filename}.
 282 ETEXI
 283
 284     {
 285         .name       = "trace-event",
 286         .args_type  = "name:s,option:b,vcpu:i?",
 287         .params     = "name on|off [vcpu]",
 288         .help       = "changes status of a specific trace event "
 289                       "(vcpu: vCPU to set, default is all)",
 290         .cmd = hmp_trace_event,
 291         .command_completion = trace_event_completion,
 292     },
 293
 294 STEXI
 295 @item trace-event
 296 @findex trace-event
 297 changes status of a trace event
 298 ETEXI
 299
 300 #if defined(CONFIG_TRACE_SIMPLE)
 301     {
 302         .name       = "trace-file",
 303         .args_type  = "op:s?,arg:F?",
 304         .params     = "on|off|flush|set [arg]",
 305         .help       = "open, close, or flush trace file, or set a new file name",
 306         .cmd        = hmp_trace_file,
 307     },
 308
 309 STEXI
 310 @item trace-file on|off|flush
 311 @findex trace-file
 312 Open, close, or flush the trace file.  If no argument is given, the status of the trace file is displayed.
 313 ETEXI
 314 #endif
 315
 316     {
 317         .name       = "log",
 318         .args_type  = "items:s",
 319         .params     = "item1[,...]",
 320         .help       = "activate logging of the specified items",
 321         .cmd        = hmp_log,
 322     },
 323
 324 STEXI
 325 @item log @var{item1}[,...]
 326 @findex log
 327 Activate logging of the specified items.
 328 ETEXI
 329
 330     {
 331         .name       = "savevm",
 332         .args_type  = "name:s?",
 333         .params     = "[tag|id]",
 334         .help       = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
 335         .cmd        = hmp_savevm,
 336     },
 337
 338 STEXI
 339 @item savevm [@var{tag}|@var{id}]
 340 @findex savevm
 341 Create a snapshot of the whole virtual machine. If @var{tag} is
 342 provided, it is used as human readable identifier. If there is already
 343 a snapshot with the same tag or ID, it is replaced. More info at
 344 @ref{vm_snapshots}.
 345 ETEXI
 346
 347     {
 348         .name       = "loadvm",
 349         .args_type  = "name:s",
 350         .params     = "tag|id",
 351         .help       = "restore a VM snapshot from its tag or id",
 352         .cmd        = hmp_loadvm,
 353         .command_completion = loadvm_completion,
 354     },
 355
 356 STEXI
 357 @item loadvm @var{tag}|@var{id}
 358 @findex loadvm
 359 Set the whole virtual machine to the snapshot identified by the tag
 360 @var{tag} or the unique snapshot ID @var{id}.
 361 ETEXI
 362
 363     {
 364         .name       = "delvm",
 365         .args_type  = "name:s",
 366         .params     = "tag|id",
 367         .help       = "delete a VM snapshot from its tag or id",
 368         .cmd        = hmp_delvm,
 369         .command_completion = delvm_completion,
 370     },
 371
 372 STEXI
 373 @item delvm @var{tag}|@var{id}
 374 @findex delvm
 375 Delete the snapshot identified by @var{tag} or @var{id}.
 376 ETEXI
 377
 378     {
 379         .name       = "singlestep",
 380         .args_type  = "option:s?",
 381         .params     = "[on|off]",
 382         .help       = "run emulation in singlestep mode or switch to normal mode",
 383         .cmd        = hmp_singlestep,
 384     },
 385
 386 STEXI
 387 @item singlestep [off]
 388 @findex singlestep
 389 Run the emulation in single step mode.
 390 If called with option off, the emulation returns to normal mode.
 391 ETEXI
 392
 393     {
 394         .name       = "stop",
 395         .args_type  = "",
 396         .params     = "",
 397         .help       = "stop emulation",
 398         .cmd        = hmp_stop,
 399     },
 400
 401 STEXI
 402 @item stop
 403 @findex stop
 404 Stop emulation.
 405 ETEXI
 406
 407     {
 408         .name       = "c|cont",
 409         .args_type  = "",
 410         .params     = "",
 411         .help       = "resume emulation",
 412         .cmd        = hmp_cont,
 413     },
 414
 415 STEXI
 416 @item c or cont
 417 @findex cont
 418 Resume emulation.
 419 ETEXI
 420
 421     {
 422         .name       = "system_wakeup",
 423         .args_type  = "",
 424         .params     = "",
 425         .help       = "wakeup guest from suspend",
 426         .cmd        = hmp_system_wakeup,
 427     },
 428
 429 STEXI
 430 @item system_wakeup
 431 @findex system_wakeup
 432 Wakeup guest from suspend.
 433 ETEXI
 434
 435     {
 436         .name       = "gdbserver",
 437         .args_type  = "device:s?",
 438         .params     = "[device]",
 439         .help       = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
 440         .cmd        = hmp_gdbserver,
 441     },
 442
 443 STEXI
 444 @item gdbserver [@var{port}]
 445 @findex gdbserver
 446 Start gdbserver session (default @var{port}=1234)
 447 ETEXI
 448
 449     {
 450         .name       = "x",
 451         .args_type  = "fmt:/,addr:l",
 452         .params     = "/fmt addr",
 453         .help       = "virtual memory dump starting at 'addr'",
 454         .cmd        = hmp_memory_dump,
 455     },
 456
 457 STEXI
 458 @item x/fmt @var{addr}
 459 @findex x
 460 Virtual memory dump starting at @var{addr}.
 461 ETEXI
 462
 463     {
 464         .name       = "xp",
 465         .args_type  = "fmt:/,addr:l",
 466         .params     = "/fmt addr",
 467         .help       = "physical memory dump starting at 'addr'",
 468         .cmd        = hmp_physical_memory_dump,
 469     },
 470
 471 STEXI
 472 @item xp /@var{fmt} @var{addr}
 473 @findex xp
 474 Physical memory dump starting at @var{addr}.
 475
 476 @var{fmt} is a format which tells the command how to format the
 477 data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
 478
 479 @table @var
 480 @item count
 481 is the number of items to be dumped.
 482
 483 @item format
 484 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
 485 c (char) or i (asm instruction).
 486
 487 @item size
 488 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
 489 @code{h} or @code{w} can be specified with the @code{i} format to
 490 respectively select 16 or 32 bit code instruction size.
 491
 492 @end table
 493
 494 Examples:
 495 @itemize
 496 @item
 497 Dump 10 instructions at the current instruction pointer:
 498 @example
 499 (qemu) x/10i $eip
 500 0x90107063:  ret
 501 0x90107064:  sti
 502 0x90107065:  lea    0x0(%esi,1),%esi
 503 0x90107069:  lea    0x0(%edi,1),%edi
 504 0x90107070:  ret
 505 0x90107071:  jmp    0x90107080
 506 0x90107073:  nop
 507 0x90107074:  nop
 508 0x90107075:  nop
 509 0x90107076:  nop
 510 @end example
 511
 512 @item
 513 Dump 80 16 bit values at the start of the video memory.
 514 @smallexample
 515 (qemu) xp/80hx 0xb8000
 516 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
 517 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
 518 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
 519 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
 520 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
 521 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
 522 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 523 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 524 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 525 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
 526 @end smallexample
 527 @end itemize
 528 ETEXI
 529
 530     {
 531         .name       = "gpa2hva",
 532         .args_type  = "addr:l",
 533         .params     = "addr",
 534         .help       = "print the host virtual address corresponding to a guest physical address",
 535         .cmd        = hmp_gpa2hva,
 536     },
 537
 538 STEXI
 539 @item gpa2hva @var{addr}
 540 @findex gpa2hva
 541 Print the host virtual address at which the guest's physical address @var{addr}
 542 is mapped.
 543 ETEXI
 544
 545 #ifdef CONFIG_LINUX
 546     {
 547         .name       = "gpa2hpa",
 548         .args_type  = "addr:l",
 549         .params     = "addr",
 550         .help       = "print the host physical address corresponding to a guest physical address",
 551         .cmd        = hmp_gpa2hpa,
 552     },
 553 #endif
 554
 555 STEXI
 556 @item gpa2hpa @var{addr}
 557 @findex gpa2hpa
 558 Print the host physical address at which the guest's physical address @var{addr}
 559 is mapped.
 560 ETEXI
 561
 562     {
 563         .name       = "p|print",
 564         .args_type  = "fmt:/,val:l",
 565         .params     = "/fmt expr",
 566         .help       = "print expression value (use $reg for CPU register access)",
 567         .cmd        = do_print,
 568     },
 569
 570 STEXI
 571 @item p or print/@var{fmt} @var{expr}
 572 @findex print
 573 Print expression value. Only the @var{format} part of @var{fmt} is
 574 used.
 575 ETEXI
 576
 577     {
 578         .name       = "i",
 579         .args_type  = "fmt:/,addr:i,index:i.",
 580         .params     = "/fmt addr",
 581         .help       = "I/O port read",
 582         .cmd        = hmp_ioport_read,
 583     },
 584
 585 STEXI
 586 @item i/@var{fmt} @var{addr} [.@var{index}]
 587 @findex i
 588 Read I/O port.
 589 ETEXI
 590
 591     {
 592         .name       = "o",
 593         .args_type  = "fmt:/,addr:i,val:i",
 594         .params     = "/fmt addr value",
 595         .help       = "I/O port write",
 596         .cmd        = hmp_ioport_write,
 597     },
 598
 599 STEXI
 600 @item o/@var{fmt} @var{addr} @var{val}
 601 @findex o
 602 Write to I/O port.
 603 ETEXI
 604
 605     {
 606         .name       = "sendkey",
 607         .args_type  = "keys:s,hold-time:i?",
 608         .params     = "keys [hold_ms]",
 609         .help       = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
 610         .cmd        = hmp_sendkey,
 611         .command_completion = sendkey_completion,
 612     },
 613
 614 STEXI
 615 @item sendkey @var{keys}
 616 @findex sendkey
 617 Send @var{keys} to the guest. @var{keys} could be the name of the
 618 key or the raw value in hexadecimal format. Use @code{-} to press
 619 several keys simultaneously. Example:
 620 @example
 621 sendkey ctrl-alt-f1
 622 @end example
 623
 624 This command is useful to send keys that your graphical user interface
 625 intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
 626 ETEXI
 627
 628     {
 629         .name       = "system_reset",
 630         .args_type  = "",
 631         .params     = "",
 632         .help       = "reset the system",
 633         .cmd        = hmp_system_reset,
 634     },
 635
 636 STEXI
 637 @item system_reset
 638 @findex system_reset
 639 Reset the system.
 640 ETEXI
 641
 642     {
 643         .name       = "system_powerdown",
 644         .args_type  = "",
 645         .params     = "",
 646         .help       = "send system power down event",
 647         .cmd        = hmp_system_powerdown,
 648     },
 649
 650 STEXI
 651 @item system_powerdown
 652 @findex system_powerdown
 653 Power down the system (if supported).
 654 ETEXI
 655
 656     {
 657         .name       = "sum",
 658         .args_type  = "start:i,size:i",
 659         .params     = "addr size",
 660         .help       = "compute the checksum of a memory region",
 661         .cmd        = hmp_sum,
 662     },
 663
 664 STEXI
 665 @item sum @var{addr} @var{size}
 666 @findex sum
 667 Compute the checksum of a memory region.
 668 ETEXI
 669
 670     {
 671         .name       = "device_add",
 672         .args_type  = "device:O",
 673         .params     = "driver[,prop=value][,...]",
 674         .help       = "add device, like -device on the command line",
 675         .cmd        = hmp_device_add,
 676         .command_completion = device_add_completion,
 677     },
 678
 679 STEXI
 680 @item device_add @var{config}
 681 @findex device_add
 682 Add device.
 683 ETEXI
 684
 685     {
 686         .name       = "device_del",
 687         .args_type  = "id:s",
 688         .params     = "device",
 689         .help       = "remove device",
 690         .cmd        = hmp_device_del,
 691         .command_completion = device_del_completion,
 692     },
 693
 694 STEXI
 695 @item device_del @var{id}
 696 @findex device_del
 697 Remove device @var{id}. @var{id} may be a short ID
 698 or a QOM object path.
 699 ETEXI
 700
 701     {
 702         .name       = "cpu",
 703         .args_type  = "index:i",
 704         .params     = "index",
 705         .help       = "set the default CPU",
 706         .cmd        = hmp_cpu,
 707     },
 708
 709 STEXI
 710 @item cpu @var{index}
 711 @findex cpu
 712 Set the default CPU.
 713 ETEXI
 714
 715     {
 716         .name       = "mouse_move",
 717         .args_type  = "dx_str:s,dy_str:s,dz_str:s?",
 718         .params     = "dx dy [dz]",
 719         .help       = "send mouse move events",
 720         .cmd        = hmp_mouse_move,
 721     },
 722
 723 STEXI
 724 @item mouse_move @var{dx} @var{dy} [@var{dz}]
 725 @findex mouse_move
 726 Move the active mouse to the specified coordinates @var{dx} @var{dy}
 727 with optional scroll axis @var{dz}.
 728 ETEXI
 729
 730     {
 731         .name       = "mouse_button",
 732         .args_type  = "button_state:i",
 733         .params     = "state",
 734         .help       = "change mouse button state (1=L, 2=M, 4=R)",
 735         .cmd        = hmp_mouse_button,
 736     },
 737
 738 STEXI
 739 @item mouse_button @var{val}
 740 @findex mouse_button
 741 Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
 742 ETEXI
 743
 744     {
 745         .name       = "mouse_set",
 746         .args_type  = "index:i",
 747         .params     = "index",
 748         .help       = "set which mouse device receives events",
 749         .cmd        = hmp_mouse_set,
 750     },
 751
 752 STEXI
 753 @item mouse_set @var{index}
 754 @findex mouse_set
 755 Set which mouse device receives events at given @var{index}, index
 756 can be obtained with
 757 @example
 758 info mice
 759 @end example
 760 ETEXI
 761
 762     {
 763         .name       = "wavcapture",
 764         .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
 765         .params     = "path [frequency [bits [channels]]]",
 766         .help       = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
 767         .cmd        = hmp_wavcapture,
 768     },
 769 STEXI
 770 @item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
 771 @findex wavcapture
 772 Capture audio into @var{filename}. Using sample rate @var{frequency}
 773 bits per sample @var{bits} and number of channels @var{channels}.
 774
 775 Defaults:
 776 @itemize @minus
 777 @item Sample rate = 44100 Hz - CD quality
 778 @item Bits = 16
 779 @item Number of channels = 2 - Stereo
 780 @end itemize
 781 ETEXI
 782
 783     {
 784         .name       = "stopcapture",
 785         .args_type  = "n:i",
 786         .params     = "capture index",
 787         .help       = "stop capture",
 788         .cmd        = hmp_stopcapture,
 789     },
 790 STEXI
 791 @item stopcapture @var{index}
 792 @findex stopcapture
 793 Stop capture with a given @var{index}, index can be obtained with
 794 @example
 795 info capture
 796 @end example
 797 ETEXI
 798
 799     {
 800         .name       = "memsave",
 801         .args_type  = "val:l,size:i,filename:s",
 802         .params     = "addr size file",
 803         .help       = "save to disk virtual memory dump starting at 'addr' of size 'size'",
 804         .cmd        = hmp_memsave,
 805     },
 806
 807 STEXI
 808 @item memsave @var{addr} @var{size} @var{file}
 809 @findex memsave
 810 save to disk virtual memory dump starting at @var{addr} of size @var{size}.
 811 ETEXI
 812
 813     {
 814         .name       = "pmemsave",
 815         .args_type  = "val:l,size:i,filename:s",
 816         .params     = "addr size file",
 817         .help       = "save to disk physical memory dump starting at 'addr' of size 'size'",
 818         .cmd        = hmp_pmemsave,
 819     },
 820
 821 STEXI
 822 @item pmemsave @var{addr} @var{size} @var{file}
 823 @findex pmemsave
 824 save to disk physical memory dump starting at @var{addr} of size @var{size}.
 825 ETEXI
 826
 827     {
 828         .name       = "boot_set",
 829         .args_type  = "bootdevice:s",
 830         .params     = "bootdevice",
 831         .help       = "define new values for the boot device list",
 832         .cmd        = hmp_boot_set,
 833     },
 834
 835 STEXI
 836 @item boot_set @var{bootdevicelist}
 837 @findex boot_set
 838 Define new values for the boot device list. Those values will override
 839 the values specified on the command line through the @code{-boot} option.
 840
 841 The values that can be specified here depend on the machine type, but are
 842 the same that can be specified in the @code{-boot} command line option.
 843 ETEXI
 844
 845     {
 846         .name       = "nmi",
 847         .args_type  = "",
 848         .params     = "",
 849         .help       = "inject an NMI",
 850         .cmd        = hmp_nmi,
 851     },
 852 STEXI
 853 @item nmi @var{cpu}
 854 @findex nmi
 855 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
 856
 857 ETEXI
 858
 859     {
 860         .name       = "ringbuf_write",
 861         .args_type  = "device:s,data:s",
 862         .params     = "device data",
 863         .help       = "Write to a ring buffer character device",
 864         .cmd        = hmp_ringbuf_write,
 865         .command_completion = ringbuf_write_completion,
 866     },
 867
 868 STEXI
 869 @item ringbuf_write @var{device} @var{data}
 870 @findex ringbuf_write
 871 Write @var{data} to ring buffer character device @var{device}.
 872 @var{data} must be a UTF-8 string.
 873
 874 ETEXI
 875
 876     {
 877         .name       = "ringbuf_read",
 878         .args_type  = "device:s,size:i",
 879         .params     = "device size",
 880         .help       = "Read from a ring buffer character device",
 881         .cmd        = hmp_ringbuf_read,
 882         .command_completion = ringbuf_write_completion,
 883     },
 884
 885 STEXI
 886 @item ringbuf_read @var{device}
 887 @findex ringbuf_read
 888 Read and print up to @var{size} bytes from ring buffer character
 889 device @var{device}.
 890 Certain non-printable characters are printed \uXXXX, where XXXX is the
 891 character code in hexadecimal.  Character \ is printed \\.
 892 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
 893 NUL characters, after the ring buffer lost data, and when reading
 894 stops because the size limit is reached.
 895
 896 ETEXI
 897
 898     {
 899         .name       = "migrate",
 900         .args_type  = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s",
 901         .params     = "[-d] [-b] [-i] [-r] uri",
 902         .help       = "migrate to URI (using -d to not wait for completion)"
 903                       "\n\t\t\t -b for migration without shared storage with"
 904                       " full copy of disk\n\t\t\t -i for migration without "
 905                       "shared storage with incremental copy of disk "
 906                       "(base image shared between src and destination)"
 907                       "\n\t\t\t -r to resume a paused migration",
 908         .cmd        = hmp_migrate,
 909     },
 910
 911
 912 STEXI
 913 @item migrate [-d] [-b] [-i] @var{uri}
 914 @findex migrate
 915 Migrate to @var{uri} (using -d to not wait for completion).
 916         -b for migration with full copy of disk
 917         -i for migration with incremental copy of disk (base image is shared)
 918 ETEXI
 919
 920     {
 921         .name       = "migrate_cancel",
 922         .args_type  = "",
 923         .params     = "",
 924         .help       = "cancel the current VM migration",
 925         .cmd        = hmp_migrate_cancel,
 926     },
 927
 928 STEXI
 929 @item migrate_cancel
 930 @findex migrate_cancel
 931 Cancel the current VM migration.
 932 ETEXI
 933
 934     {
 935         .name       = "migrate_continue",
 936         .args_type  = "state:s",
 937         .params     = "state",
 938         .help       = "Continue migration from the given paused state",
 939         .cmd        = hmp_migrate_continue,
 940     },
 941 STEXI
 942 @item migrate_continue @var{state}
 943 @findex migrate_continue
 944 Continue migration from the paused state @var{state}
 945 ETEXI
 946
 947     {
 948         .name       = "migrate_incoming",
 949         .args_type  = "uri:s",
 950         .params     = "uri",
 951         .help       = "Continue an incoming migration from an -incoming defer",
 952         .cmd        = hmp_migrate_incoming,
 953     },
 954
 955 STEXI
 956 @item migrate_incoming @var{uri}
 957 @findex migrate_incoming
 958 Continue an incoming migration using the @var{uri} (that has the same syntax
 959 as the -incoming option).
 960 ETEXI
 961
 962     {
 963         .name       = "migrate_recover",
 964         .args_type  = "uri:s",
 965         .params     = "uri",
 966         .help       = "Continue a paused incoming postcopy migration",
 967         .cmd        = hmp_migrate_recover,
 968     },
 969
 970 STEXI
 971 @item migrate_recover @var{uri}
 972 @findex migrate_recover
 973 Continue a paused incoming postcopy migration using the @var{uri}.
 974 ETEXI
 975
 976     {
 977         .name       = "migrate_pause",
 978         .args_type  = "",
 979         .params     = "",
 980         .help       = "Pause an ongoing migration (postcopy-only)",
 981         .cmd        = hmp_migrate_pause,
 982     },
 983
 984 STEXI
 985 @item migrate_pause
 986 @findex migrate_pause
 987 Pause an ongoing migration.  Currently it only supports postcopy.
 988 ETEXI
 989
 990     {
 991         .name       = "migrate_set_cache_size",
 992         .args_type  = "value:o",
 993         .params     = "value",
 994         .help       = "set cache size (in bytes) for XBZRLE migrations,"
 995                       "the cache size will be rounded down to the nearest "
 996                       "power of 2.\n"
 997                       "The cache size affects the number of cache misses."
 998                       "In case of a high cache miss ratio you need to increase"
 999                       " the cache size",
1000         .cmd        = hmp_migrate_set_cache_size,
1001     },
1002
1003 STEXI
1004 @item migrate_set_cache_size @var{value}
1005 @findex migrate_set_cache_size
1006 Set cache size to @var{value} (in bytes) for xbzrle migrations.
1007 ETEXI
1008
1009     {
1010         .name       = "migrate_set_speed",
1011         .args_type  = "value:o",
1012         .params     = "value",
1013         .help       = "set maximum speed (in bytes) for migrations. "
1014         "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1015         .cmd        = hmp_migrate_set_speed,
1016     },
1017
1018 STEXI
1019 @item migrate_set_speed @var{value}
1020 @findex migrate_set_speed
1021 Set maximum speed to @var{value} (in bytes) for migrations.
1022 ETEXI
1023
1024     {
1025         .name       = "migrate_set_downtime",
1026         .args_type  = "value:T",
1027         .params     = "value",
1028         .help       = "set maximum tolerated downtime (in seconds) for migrations",
1029         .cmd        = hmp_migrate_set_downtime,
1030     },
1031
1032 STEXI
1033 @item migrate_set_downtime @var{second}
1034 @findex migrate_set_downtime
1035 Set maximum tolerated downtime (in seconds) for migration.
1036 ETEXI
1037
1038     {
1039         .name       = "migrate_set_capability",
1040         .args_type  = "capability:s,state:b",
1041         .params     = "capability state",
1042         .help       = "Enable/Disable the usage of a capability for migration",
1043         .cmd        = hmp_migrate_set_capability,
1044         .command_completion = migrate_set_capability_completion,
1045     },
1046
1047 STEXI
1048 @item migrate_set_capability @var{capability} @var{state}
1049 @findex migrate_set_capability
1050 Enable/Disable the usage of a capability @var{capability} for migration.
1051 ETEXI
1052
1053     {
1054         .name       = "migrate_set_parameter",
1055         .args_type  = "parameter:s,value:s",
1056         .params     = "parameter value",
1057         .help       = "Set the parameter for migration",
1058         .cmd        = hmp_migrate_set_parameter,
1059         .command_completion = migrate_set_parameter_completion,
1060     },
1061
1062 STEXI
1063 @item migrate_set_parameter @var{parameter} @var{value}
1064 @findex migrate_set_parameter
1065 Set the parameter @var{parameter} for migration.
1066 ETEXI
1067
1068     {
1069         .name       = "migrate_start_postcopy",
1070         .args_type  = "",
1071         .params     = "",
1072         .help       = "Followup to a migration command to switch the migration"
1073                       " to postcopy mode. The postcopy-ram capability must "
1074                       "be set on both source and destination before the "
1075                       "original migration command .",
1076         .cmd        = hmp_migrate_start_postcopy,
1077     },
1078
1079 STEXI
1080 @item migrate_start_postcopy
1081 @findex migrate_start_postcopy
1082 Switch in-progress migration to postcopy mode. Ignored after the end of
1083 migration (or once already in postcopy).
1084 ETEXI
1085
1086     {
1087         .name       = "x_colo_lost_heartbeat",
1088         .args_type  = "",
1089         .params     = "",
1090         .help       = "Tell COLO that heartbeat is lost,\n\t\t\t"
1091                       "a failover or takeover is needed.",
1092         .cmd = hmp_x_colo_lost_heartbeat,
1093     },
1094
1095 STEXI
1096 @item x_colo_lost_heartbeat
1097 @findex x_colo_lost_heartbeat
1098 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1099 ETEXI
1100
1101     {
1102         .name       = "client_migrate_info",
1103         .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1104         .params     = "protocol hostname port tls-port cert-subject",
1105         .help       = "set migration information for remote display",
1106         .cmd        = hmp_client_migrate_info,
1107     },
1108
1109 STEXI
1110 @item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
1111 @findex client_migrate_info
1112 Set migration information for remote display.  This makes the server
1113 ask the client to automatically reconnect using the new parameters
1114 once migration finished successfully.  Only implemented for SPICE.
1115 ETEXI
1116
1117     {
1118         .name       = "dump-guest-memory",
1119         .args_type  = "paging:-p,detach:-d,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?",
1120         .params     = "[-p] [-d] [-z|-l|-s] filename [begin length]",
1121         .help       = "dump guest memory into file 'filename'.\n\t\t\t"
1122                       "-p: do paging to get guest's memory mapping.\n\t\t\t"
1123                       "-d: return immediately (do not wait for completion).\n\t\t\t"
1124                       "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1125                       "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1126                       "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1127                       "begin: the starting physical address.\n\t\t\t"
1128                       "length: the memory size, in bytes.",
1129         .cmd        = hmp_dump_guest_memory,
1130     },
1131
1132
1133 STEXI
1134 @item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1135 @item dump-guest-memory [-z|-l|-s] @var{filename}
1136 @findex dump-guest-memory
1137 Dump guest memory to @var{protocol}. The file can be processed with crash or
1138 gdb. Without -z|-l|-s, the dump format is ELF.
1139         -p: do paging to get guest's memory mapping.
1140         -z: dump in kdump-compressed format, with zlib compression.
1141         -l: dump in kdump-compressed format, with lzo compression.
1142         -s: dump in kdump-compressed format, with snappy compression.
1143   filename: dump file name.
1144      begin: the starting physical address. It's optional, and should be
1145             specified together with length.
1146     length: the memory size, in bytes. It's optional, and should be specified
1147             together with begin.
1148 ETEXI
1149
1150 #if defined(TARGET_S390X)
1151     {
1152         .name       = "dump-skeys",
1153         .args_type  = "filename:F",
1154         .params     = "",
1155         .help       = "Save guest storage keys into file 'filename'.\n",
1156         .cmd        = hmp_dump_skeys,
1157     },
1158 #endif
1159
1160 STEXI
1161 @item dump-skeys @var{filename}
1162 @findex dump-skeys
1163 Save guest storage keys to a file.
1164 ETEXI
1165
1166 #if defined(TARGET_S390X)
1167     {
1168         .name       = "migration_mode",
1169         .args_type  = "mode:i",
1170         .params     = "mode",
1171         .help       = "Enables or disables migration mode\n",
1172         .cmd        = hmp_migrationmode,
1173     },
1174 #endif
1175
1176 STEXI
1177 @item migration_mode @var{mode}
1178 @findex migration_mode
1179 Enables or disables migration mode.
1180 ETEXI
1181
1182     {
1183         .name       = "snapshot_blkdev",
1184         .args_type  = "reuse:-n,device:B,snapshot-file:s?,format:s?",
1185         .params     = "[-n] device [new-image-file] [format]",
1186         .help       = "initiates a live snapshot\n\t\t\t"
1187                       "of device. If a new image file is specified, the\n\t\t\t"
1188                       "new image file will become the new root image.\n\t\t\t"
1189                       "If format is specified, the snapshot file will\n\t\t\t"
1190                       "be created in that format.\n\t\t\t"
1191                       "The default format is qcow2.  The -n flag requests QEMU\n\t\t\t"
1192                       "to reuse the image found in new-image-file, instead of\n\t\t\t"
1193                       "recreating it from scratch.",
1194         .cmd        = hmp_snapshot_blkdev,
1195     },
1196
1197 STEXI
1198 @item snapshot_blkdev
1199 @findex snapshot_blkdev
1200 Snapshot device, using snapshot file as target if provided
1201 ETEXI
1202
1203     {
1204         .name       = "snapshot_blkdev_internal",
1205         .args_type  = "device:B,name:s",
1206         .params     = "device name",
1207         .help       = "take an internal snapshot of device.\n\t\t\t"
1208                       "The format of the image used by device must\n\t\t\t"
1209                       "support it, such as qcow2.\n\t\t\t",
1210         .cmd        = hmp_snapshot_blkdev_internal,
1211     },
1212
1213 STEXI
1214 @item snapshot_blkdev_internal
1215 @findex snapshot_blkdev_internal
1216 Take an internal snapshot on device if it support
1217 ETEXI
1218
1219     {
1220         .name       = "snapshot_delete_blkdev_internal",
1221         .args_type  = "device:B,name:s,id:s?",
1222         .params     = "device name [id]",
1223         .help       = "delete an internal snapshot of device.\n\t\t\t"
1224                       "If id is specified, qemu will try delete\n\t\t\t"
1225                       "the snapshot matching both id and name.\n\t\t\t"
1226                       "The format of the image used by device must\n\t\t\t"
1227                       "support it, such as qcow2.\n\t\t\t",
1228         .cmd        = hmp_snapshot_delete_blkdev_internal,
1229     },
1230
1231 STEXI
1232 @item snapshot_delete_blkdev_internal
1233 @findex snapshot_delete_blkdev_internal
1234 Delete an internal snapshot on device if it support
1235 ETEXI
1236
1237     {
1238         .name       = "drive_mirror",
1239         .args_type  = "reuse:-n,full:-f,device:B,target:s,format:s?",
1240         .params     = "[-n] [-f] device target [format]",
1241         .help       = "initiates live storage\n\t\t\t"
1242                       "migration for a device. The device's contents are\n\t\t\t"
1243                       "copied to the new image file, including data that\n\t\t\t"
1244                       "is written after the command is started.\n\t\t\t"
1245                       "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1246                       "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1247                       "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1248                       "so that the result does not need a backing file.\n\t\t\t",
1249         .cmd        = hmp_drive_mirror,
1250     },
1251 STEXI
1252 @item drive_mirror
1253 @findex drive_mirror
1254 Start mirroring a block device's writes to a new destination,
1255 using the specified target.
1256 ETEXI
1257
1258     {
1259         .name       = "drive_backup",
1260         .args_type  = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1261         .params     = "[-n] [-f] [-c] device target [format]",
1262         .help       = "initiates a point-in-time\n\t\t\t"
1263                       "copy for a device. The device's contents are\n\t\t\t"
1264                       "copied to the new image file, excluding data that\n\t\t\t"
1265                       "is written after the command is started.\n\t\t\t"
1266                       "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1267                       "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1268                       "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1269                       "so that the result does not need a backing file.\n\t\t\t"
1270                       "The -c flag requests QEMU to compress backup data\n\t\t\t"
1271                       "(if the target format supports it).\n\t\t\t",
1272         .cmd        = hmp_drive_backup,
1273     },
1274 STEXI
1275 @item drive_backup
1276 @findex drive_backup
1277 Start a point-in-time copy of a block device to a specificed target.
1278 ETEXI
1279
1280     {
1281         .name       = "drive_add",
1282         .args_type  = "node:-n,pci_addr:s,opts:s",
1283         .params     = "[-n] [[<domain>:]<bus>:]<slot>\n"
1284                       "[file=file][,if=type][,bus=n]\n"
1285                       "[,unit=m][,media=d][,index=i]\n"
1286                       "[,snapshot=on|off][,cache=on|off]\n"
1287                       "[,readonly=on|off][,copy-on-read=on|off]",
1288         .help       = "add drive to PCI storage controller",
1289         .cmd        = hmp_drive_add,
1290     },
1291
1292 STEXI
1293 @item drive_add
1294 @findex drive_add
1295 Add drive to PCI storage controller.
1296 ETEXI
1297
1298     {
1299         .name       = "pcie_aer_inject_error",
1300         .args_type  = "advisory_non_fatal:-a,correctable:-c,"
1301                       "id:s,error_status:s,"
1302                       "header0:i?,header1:i?,header2:i?,header3:i?,"
1303                       "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1304         .params     = "[-a] [-c] id "
1305                       "<error_status> [<tlp header> [<tlp header prefix>]]",
1306         .help       = "inject pcie aer error\n\t\t\t"
1307                       " -a for advisory non fatal error\n\t\t\t"
1308                       " -c for correctable error\n\t\t\t"
1309                       "<id> = qdev device id\n\t\t\t"
1310                       "<error_status> = error string or 32bit\n\t\t\t"
1311                       "<tlb header> = 32bit x 4\n\t\t\t"
1312                       "<tlb header prefix> = 32bit x 4",
1313         .cmd        = hmp_pcie_aer_inject_error,
1314     },
1315
1316 STEXI
1317 @item pcie_aer_inject_error
1318 @findex pcie_aer_inject_error
1319 Inject PCIe AER error
1320 ETEXI
1321
1322     {
1323         .name       = "netdev_add",
1324         .args_type  = "netdev:O",
1325         .params     = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1326         .help       = "add host network device",
1327         .cmd        = hmp_netdev_add,
1328         .command_completion = netdev_add_completion,
1329     },
1330
1331 STEXI
1332 @item netdev_add
1333 @findex netdev_add
1334 Add host network device.
1335 ETEXI
1336
1337     {
1338         .name       = "netdev_del",
1339         .args_type  = "id:s",
1340         .params     = "id",
1341         .help       = "remove host network device",
1342         .cmd        = hmp_netdev_del,
1343         .command_completion = netdev_del_completion,
1344     },
1345
1346 STEXI
1347 @item netdev_del
1348 @findex netdev_del
1349 Remove host network device.
1350 ETEXI
1351
1352     {
1353         .name       = "object_add",
1354         .args_type  = "object:O",
1355         .params     = "[qom-type=]type,id=str[,prop=value][,...]",
1356         .help       = "create QOM object",
1357         .cmd        = hmp_object_add,
1358         .command_completion = object_add_completion,
1359     },
1360
1361 STEXI
1362 @item object_add
1363 @findex object_add
1364 Create QOM object.
1365 ETEXI
1366
1367     {
1368         .name       = "object_del",
1369         .args_type  = "id:s",
1370         .params     = "id",
1371         .help       = "destroy QOM object",
1372         .cmd        = hmp_object_del,
1373         .command_completion = object_del_completion,
1374     },
1375
1376 STEXI
1377 @item object_del
1378 @findex object_del
1379 Destroy QOM object.
1380 ETEXI
1381
1382 #ifdef CONFIG_SLIRP
1383     {
1384         .name       = "hostfwd_add",
1385         .args_type  = "arg1:s,arg2:s?,arg3:s?",
1386         .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1387         .help       = "redirect TCP or UDP connections from host to guest (requires -net user)",
1388         .cmd        = hmp_hostfwd_add,
1389     },
1390 #endif
1391 STEXI
1392 @item hostfwd_add
1393 @findex hostfwd_add
1394 Redirect TCP or UDP connections from host to guest (requires -net user).
1395 ETEXI
1396
1397 #ifdef CONFIG_SLIRP
1398     {
1399         .name       = "hostfwd_remove",
1400         .args_type  = "arg1:s,arg2:s?,arg3:s?",
1401         .params     = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1402         .help       = "remove host-to-guest TCP or UDP redirection",
1403         .cmd        = hmp_hostfwd_remove,
1404     },
1405
1406 #endif
1407 STEXI
1408 @item hostfwd_remove
1409 @findex hostfwd_remove
1410 Remove host-to-guest TCP or UDP redirection.
1411 ETEXI
1412
1413     {
1414         .name       = "balloon",
1415         .args_type  = "value:M",
1416         .params     = "target",
1417         .help       = "request VM to change its memory allocation (in MB)",
1418         .cmd        = hmp_balloon,
1419     },
1420
1421 STEXI
1422 @item balloon @var{value}
1423 @findex balloon
1424 Request VM to change its memory allocation to @var{value} (in MB).
1425 ETEXI
1426
1427     {
1428         .name       = "set_link",
1429         .args_type  = "name:s,up:b",
1430         .params     = "name on|off",
1431         .help       = "change the link status of a network adapter",
1432         .cmd        = hmp_set_link,
1433         .command_completion = set_link_completion,
1434     },
1435
1436 STEXI
1437 @item set_link @var{name} [on|off]
1438 @findex set_link
1439 Switch link @var{name} on (i.e. up) or off (i.e. down).
1440 ETEXI
1441
1442     {
1443         .name       = "watchdog_action",
1444         .args_type  = "action:s",
1445         .params     = "[reset|shutdown|poweroff|pause|debug|none]",
1446         .help       = "change watchdog action",
1447         .cmd        = hmp_watchdog_action,
1448         .command_completion = watchdog_action_completion,
1449     },
1450
1451 STEXI
1452 @item watchdog_action
1453 @findex watchdog_action
1454 Change watchdog action.
1455 ETEXI
1456
1457     {
1458         .name       = "acl_show",
1459         .args_type  = "aclname:s",
1460         .params     = "aclname",
1461         .help       = "list rules in the access control list",
1462         .cmd        = hmp_acl_show,
1463     },
1464
1465 STEXI
1466 @item acl_show @var{aclname}
1467 @findex acl_show
1468 List all the matching rules in the access control list, and the default
1469 policy. There are currently two named access control lists,
1470 @var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1471 certificate distinguished name, and SASL username respectively.
1472 ETEXI
1473
1474     {
1475         .name       = "acl_policy",
1476         .args_type  = "aclname:s,policy:s",
1477         .params     = "aclname allow|deny",
1478         .help       = "set default access control list policy",
1479         .cmd        = hmp_acl_policy,
1480     },
1481
1482 STEXI
1483 @item acl_policy @var{aclname} @code{allow|deny}
1484 @findex acl_policy
1485 Set the default access control list policy, used in the event that
1486 none of the explicit rules match. The default policy at startup is
1487 always @code{deny}.
1488 ETEXI
1489
1490     {
1491         .name       = "acl_add",
1492         .args_type  = "aclname:s,match:s,policy:s,index:i?",
1493         .params     = "aclname match allow|deny [index]",
1494         .help       = "add a match rule to the access control list",
1495         .cmd        = hmp_acl_add,
1496     },
1497
1498 STEXI
1499 @item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1500 @findex acl_add
1501 Add a match rule to the access control list, allowing or denying access.
1502 The match will normally be an exact username or x509 distinguished name,
1503 but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1504 allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1505 normally be appended to the end of the ACL, but can be inserted
1506 earlier in the list if the optional @var{index} parameter is supplied.
1507 ETEXI
1508
1509     {
1510         .name       = "acl_remove",
1511         .args_type  = "aclname:s,match:s",
1512         .params     = "aclname match",
1513         .help       = "remove a match rule from the access control list",
1514         .cmd        = hmp_acl_remove,
1515     },
1516
1517 STEXI
1518 @item acl_remove @var{aclname} @var{match}
1519 @findex acl_remove
1520 Remove the specified match rule from the access control list.
1521 ETEXI
1522
1523     {
1524         .name       = "acl_reset",
1525         .args_type  = "aclname:s",
1526         .params     = "aclname",
1527         .help       = "reset the access control list",
1528         .cmd        = hmp_acl_reset,
1529     },
1530
1531 STEXI
1532 @item acl_reset @var{aclname}
1533 @findex acl_reset
1534 Remove all matches from the access control list, and set the default
1535 policy back to @code{deny}.
1536 ETEXI
1537
1538     {
1539         .name       = "nbd_server_start",
1540         .args_type  = "all:-a,writable:-w,uri:s",
1541         .params     = "nbd_server_start [-a] [-w] host:port",
1542         .help       = "serve block devices on the given host and port",
1543         .cmd        = hmp_nbd_server_start,
1544     },
1545 STEXI
1546 @item nbd_server_start @var{host}:@var{port}
1547 @findex nbd_server_start
1548 Start an NBD server on the given host and/or port.  If the @option{-a}
1549 option is included, all of the virtual machine's block devices that
1550 have an inserted media on them are automatically exported; in this case,
1551 the @option{-w} option makes the devices writable too.
1552 ETEXI
1553
1554     {
1555         .name       = "nbd_server_add",
1556         .args_type  = "writable:-w,device:B,name:s?",
1557         .params     = "nbd_server_add [-w] device [name]",
1558         .help       = "export a block device via NBD",
1559         .cmd        = hmp_nbd_server_add,
1560     },
1561 STEXI
1562 @item nbd_server_add @var{device} [ @var{name} ]
1563 @findex nbd_server_add
1564 Export a block device through QEMU's NBD server, which must be started
1565 beforehand with @command{nbd_server_start}.  The @option{-w} option makes the
1566 exported device writable too.  The export name is controlled by @var{name},
1567 defaulting to @var{device}.
1568 ETEXI
1569
1570     {
1571         .name       = "nbd_server_remove",
1572         .args_type  = "force:-f,name:s",
1573         .params     = "nbd_server_remove [-f] name",
1574         .help       = "remove an export previously exposed via NBD",
1575         .cmd        = hmp_nbd_server_remove,
1576     },
1577 STEXI
1578 @item nbd_server_remove [-f] @var{name}
1579 @findex nbd_server_remove
1580 Stop exporting a block device through QEMU's NBD server, which was
1581 previously started with @command{nbd_server_add}.  The @option{-f}
1582 option forces the server to drop the export immediately even if
1583 clients are connected; otherwise the command fails unless there are no
1584 clients.
1585 ETEXI
1586
1587     {
1588         .name       = "nbd_server_stop",
1589         .args_type  = "",
1590         .params     = "nbd_server_stop",
1591         .help       = "stop serving block devices using the NBD protocol",
1592         .cmd        = hmp_nbd_server_stop,
1593     },
1594 STEXI
1595 @item nbd_server_stop
1596 @findex nbd_server_stop
1597 Stop the QEMU embedded NBD server.
1598 ETEXI
1599
1600
1601 #if defined(TARGET_I386)
1602
1603     {
1604         .name       = "mce",
1605         .args_type  = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1606         .params     = "[-b] cpu bank status mcgstatus addr misc",
1607         .help       = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1608         .cmd        = hmp_mce,
1609     },
1610
1611 #endif
1612 STEXI
1613 @item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1614 @findex mce (x86)
1615 Inject an MCE on the given CPU (x86 only).
1616 ETEXI
1617
1618     {
1619         .name       = "getfd",
1620         .args_type  = "fdname:s",
1621         .params     = "getfd name",
1622         .help       = "receive a file descriptor via SCM rights and assign it a name",
1623         .cmd        = hmp_getfd,
1624     },
1625
1626 STEXI
1627 @item getfd @var{fdname}
1628 @findex getfd
1629 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1630 mechanism on unix sockets, it is stored using the name @var{fdname} for
1631 later use by other monitor commands.
1632 ETEXI
1633
1634     {
1635         .name       = "closefd",
1636         .args_type  = "fdname:s",
1637         .params     = "closefd name",
1638         .help       = "close a file descriptor previously passed via SCM rights",
1639         .cmd        = hmp_closefd,
1640     },
1641
1642 STEXI
1643 @item closefd @var{fdname}
1644 @findex closefd
1645 Close the file descriptor previously assigned to @var{fdname} using the
1646 @code{getfd} command. This is only needed if the file descriptor was never
1647 used by another monitor command.
1648 ETEXI
1649
1650     {
1651         .name       = "block_passwd",
1652         .args_type  = "device:B,password:s",
1653         .params     = "block_passwd device password",
1654         .help       = "set the password of encrypted block devices",
1655         .cmd        = hmp_block_passwd,
1656     },
1657
1658 STEXI
1659 @item block_passwd @var{device} @var{password}
1660 @findex block_passwd
1661 Set the encrypted device @var{device} password to @var{password}
1662
1663 This command is now obsolete and will always return an error since 2.10
1664 ETEXI
1665
1666     {
1667         .name       = "block_set_io_throttle",
1668         .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1669         .params     = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1670         .help       = "change I/O throttle limits for a block drive",
1671         .cmd        = hmp_block_set_io_throttle,
1672     },
1673
1674 STEXI
1675 @item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1676 @findex block_set_io_throttle
1677 Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}.
1678 @var{device} can be a block device name, a qdev ID or a QOM path.
1679 ETEXI
1680
1681     {
1682         .name       = "set_password",
1683         .args_type  = "protocol:s,password:s,connected:s?",
1684         .params     = "protocol password action-if-connected",
1685         .help       = "set spice/vnc password",
1686         .cmd        = hmp_set_password,
1687     },
1688
1689 STEXI
1690 @item set_password [ vnc | spice ] password [ action-if-connected ]
1691 @findex set_password
1692 Change spice/vnc password.  Use zero to make the password stay valid
1693 forever.  @var{action-if-connected} specifies what should happen in
1694 case a connection is established: @var{fail} makes the password change
1695 fail.  @var{disconnect} changes the password and disconnects the
1696 client.  @var{keep} changes the password and keeps the connection up.
1697 @var{keep} is the default.
1698 ETEXI
1699
1700     {
1701         .name       = "expire_password",
1702         .args_type  = "protocol:s,time:s",
1703         .params     = "protocol time",
1704         .help       = "set spice/vnc password expire-time",
1705         .cmd        = hmp_expire_password,
1706     },
1707
1708 STEXI
1709 @item expire_password [ vnc | spice ] expire-time
1710 @findex expire_password
1711 Specify when a password for spice/vnc becomes
1712 invalid. @var{expire-time} accepts:
1713
1714 @table @var
1715 @item now
1716 Invalidate password instantly.
1717
1718 @item never
1719 Password stays valid forever.
1720
1721 @item +nsec
1722 Password stays valid for @var{nsec} seconds starting now.
1723
1724 @item nsec
1725 Password is invalidated at the given time.  @var{nsec} are the seconds
1726 passed since 1970, i.e. unix epoch.
1727
1728 @end table
1729 ETEXI
1730
1731     {
1732         .name       = "chardev-add",
1733         .args_type  = "args:s",
1734         .params     = "args",
1735         .help       = "add chardev",
1736         .cmd        = hmp_chardev_add,
1737         .command_completion = chardev_add_completion,
1738     },
1739
1740 STEXI
1741 @item chardev-add args
1742 @findex chardev-add
1743 chardev-add accepts the same parameters as the -chardev command line switch.
1744
1745 ETEXI
1746
1747     {
1748         .name       = "chardev-change",
1749         .args_type  = "id:s,args:s",
1750         .params     = "id args",
1751         .help       = "change chardev",
1752         .cmd        = hmp_chardev_change,
1753     },
1754
1755 STEXI
1756 @item chardev-change args
1757 @findex chardev-change
1758 chardev-change accepts existing chardev @var{id} and then the same arguments
1759 as the -chardev command line switch (except for "id").
1760
1761 ETEXI
1762
1763     {
1764         .name       = "chardev-remove",
1765         .args_type  = "id:s",
1766         .params     = "id",
1767         .help       = "remove chardev",
1768         .cmd        = hmp_chardev_remove,
1769         .command_completion = chardev_remove_completion,
1770     },
1771
1772 STEXI
1773 @item chardev-remove id
1774 @findex chardev-remove
1775 Removes the chardev @var{id}.
1776
1777 ETEXI
1778
1779     {
1780         .name       = "chardev-send-break",
1781         .args_type  = "id:s",
1782         .params     = "id",
1783         .help       = "send a break on chardev",
1784         .cmd        = hmp_chardev_send_break,
1785         .command_completion = chardev_remove_completion,
1786     },
1787
1788 STEXI
1789 @item chardev-send-break id
1790 @findex chardev-send-break
1791 Send a break on the chardev @var{id}.
1792
1793 ETEXI
1794
1795     {
1796         .name       = "qemu-io",
1797         .args_type  = "device:B,command:s",
1798         .params     = "[device] \"[command]\"",
1799         .help       = "run a qemu-io command on a block device",
1800         .cmd        = hmp_qemu_io,
1801     },
1802
1803 STEXI
1804 @item qemu-io @var{device} @var{command}
1805 @findex qemu-io
1806 Executes a qemu-io command on the given block device.
1807
1808 ETEXI
1809
1810     {
1811         .name       = "cpu-add",
1812         .args_type  = "id:i",
1813         .params     = "id",
1814         .help       = "add cpu",
1815         .cmd        = hmp_cpu_add,
1816     },
1817
1818 STEXI
1819 @item cpu-add @var{id}
1820 @findex cpu-add
1821 Add CPU with id @var{id}
1822 ETEXI
1823
1824     {
1825         .name       = "qom-list",
1826         .args_type  = "path:s?",
1827         .params     = "path",
1828         .help       = "list QOM properties",
1829         .cmd        = hmp_qom_list,
1830     },
1831
1832 STEXI
1833 @item qom-list [@var{path}]
1834 Print QOM properties of object at location @var{path}
1835 ETEXI
1836
1837     {
1838         .name       = "qom-set",
1839         .args_type  = "path:s,property:s,value:s",
1840         .params     = "path property value",
1841         .help       = "set QOM property",
1842         .cmd        = hmp_qom_set,
1843     },
1844
1845 STEXI
1846 @item qom-set @var{path} @var{property} @var{value}
1847 Set QOM property @var{property} of object at location @var{path} to value @var{value}
1848 ETEXI
1849
1850     {
1851         .name       = "info",
1852         .args_type  = "item:s?",
1853         .params     = "[subcommand]",
1854         .help       = "show various information about the system state",
1855         .cmd        = hmp_info_help,
1856         .sub_table  = info_cmds,
1857     },
1858
1859 STEXI
1860 @end table
1861 ETEXI