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
12 { "help|?", "name:s?", do_help_cmd
, "[cmd]", "show the help" },
14 @item help or ?
[@
var{cmd
}]
15 Show the help
for all commands or just
for command @
var{cmd
}.
18 { "commit", "device:B", do_commit
,
19 "device|all", "commit changes to the disk images (if -snapshot is used) or backing files" },
22 Commit changes to the disk
images (if -snapshot is used
) or backing files
.
25 { "info", "item:s?", do_info
,
26 "[subcommand]", "show various information about the system state" },
28 @item info @
var{subcommand
}
29 Show various information about the system state
.
33 show the version of QEMU
35 show the various VLANs and the associated devices
37 show the character devices
39 show the block devices
41 show block device statistics
43 show the cpu registers
45 show infos
for each CPU
47 show the command line history
49 show the interrupts
statistics (if available
)
51 show
i8259 (PIC
) state
53 show emulated PCI device info
55 show virtual to physical memory
mappings (i386 only
)
57 show the active virtual memory
mappings (i386 only
)
59 show state of
HPET (i386 only
)
63 show USB devices plugged on the virtual USB hub
65 show all USB host devices
67 show profiling information
69 show information about active capturing
71 show list of VM snapshots
73 show the current VM
status (running|paused
)
75 show guest PCMCIA status
77 show which guest mouse is receiving events
79 show the vnc server status
81 show the current VM name
83 show the current VM UUID
87 show user network stack connection states
91 show balloon information
97 { "q|quit", "", do_quit
,
98 "", "quit the emulator" },
104 { "eject", "force:-f,filename:B", do_eject
,
105 "[-f] device", "eject a removable medium (use -f to force it)" },
107 @item eject
[-f
] @
var{device
}
108 Eject a removable
medium (use
-f to force it
).
111 { "change", "device:B,target:F,arg:s?", do_change
,
112 "device filename [format]", "change a removable medium, optional format" },
114 @item change @
var{device
} @
var{setting
}
116 Change the configuration of a device
.
119 @item change @
var{diskdevice
} @
var{filename
} [@
var{format
}]
120 Change the medium
for a removable disk device to point to @
var{filename
}. eg
123 (qemu
) change ide1
-cd0
/path
/to
/some
.iso
126 @
var{format
} is optional
.
128 @item change vnc @
var{display
},@
var{options
}
129 Change the configuration of the VNC server
. The valid syntax
for @
var{display
}
130 and @
var{options
} are described at @ref
{sec_invocation
}. eg
133 (qemu
) change vnc localhost
:1
136 @item change vnc password
[@
var{password
}]
138 Change the password associated with the VNC server
. If the
new password is not
139 supplied
, the monitor will prompt
for it to be entered
. VNC passwords are only
140 significant up to
8 letters
. eg
143 (qemu
) change vnc password
150 { "screendump", "filename:F", do_screen_dump
,
151 "filename", "save screen into PPM image 'filename'" },
153 @item screendump @
var{filename
}
154 Save screen into PPM image @
var{filename
}.
157 { "logfile", "filename:F", do_logfile
,
158 "filename", "output logs to 'filename'" },
160 @item logfile @
var{filename
}
161 Output logs to @
var{filename
}.
164 { "log", "items:s", do_log
,
165 "item1[,...]", "activate logging of the specified items to '/tmp/qemu.log'" },
167 @item log @
var{item1
}[,...]
168 Activate logging of the specified items to @file
{/tmp
/qemu
.log
}.
171 { "savevm", "name:s?", do_savevm
,
172 "[tag|id]", "save a VM snapshot. If no tag or id are provided, a new snapshot is created" },
174 @item savevm
[@
var{tag
}|@
var{id
}]
175 Create a snapshot of the whole virtual machine
. If @
var{tag
} is
176 provided
, it is used as human readable identifier
. If there is already
177 a snapshot with the same tag or ID
, it is replaced
. More info at
181 { "loadvm", "name:s", do_loadvm
,
182 "tag|id", "restore a VM snapshot from its tag or id" },
184 @item loadvm @
var{tag
}|@
var{id
}
185 Set the whole virtual machine to the snapshot identified by the tag
186 @
var{tag
} or the unique snapshot ID @
var{id
}.
189 { "delvm", "name:s", do_delvm
,
190 "tag|id", "delete a VM snapshot from its tag or id" },
192 @item delvm @
var{tag
}|@
var{id
}
193 Delete the snapshot identified by @
var{tag
} or @
var{id
}.
196 { "singlestep", "option:s?", do_singlestep
,
197 "[on|off]", "run emulation in singlestep mode or switch to normal mode", },
199 @item singlestep
[off
]
200 Run the emulation
in single step mode
.
201 If called with option off
, the emulation returns to normal mode
.
204 { "stop", "", do_stop
,
205 "", "stop emulation", },
211 { "c|cont", "", do_cont
,
212 "", "resume emulation", },
218 { "gdbserver", "device:s?", do_gdbserver
,
219 "[device]", "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", },
221 @item gdbserver
[@
var{port
}]
222 Start gdbserver
session (default @
var{port
}=1234)
225 { "x", "fmt:/,addr:l", do_memory_dump
,
226 "/fmt addr", "virtual memory dump starting at 'addr'", },
228 @item x
/fmt @
var{addr
}
229 Virtual memory dump starting at @
var{addr
}.
232 { "xp", "fmt:/,addr:l", do_physical_memory_dump
,
233 "/fmt addr", "physical memory dump starting at 'addr'", },
235 @item xp
/@
var{fmt
} @
var{addr
}
236 Physical memory dump starting at @
var{addr
}.
238 @
var{fmt
} is a format which tells the command how to format the
239 data
. Its syntax is
: @option
{/@
{count@
}@
{format@
}@
{size@
}}
243 is the number of items to be dumped
.
246 can be
x (hex
), d (signed decimal
), u (unsigned decimal
), o (octal
),
247 c (char
) or
i (asm instruction
).
250 can be
b (8 bits
), h (16 bits
), w (32 bits
) or
g (64 bits
). On x86
,
251 @code
{h
} or @code
{w
} can be specified with the @code
{i
} format to
252 respectively select
16 or
32 bit code instruction size
.
259 Dump
10 instructions at the current instruction pointer
:
264 0x90107065: lea
0x0(%esi
,1),%esi
265 0x90107069: lea
0x0(%edi
,1),%edi
267 0x90107071: jmp
0x90107080
275 Dump
80 16 bit values at the start of the video memory
.
277 (qemu
) xp
/80hx
0xb8000
278 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
279 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
280 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
281 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
282 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
283 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
284 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
285 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
286 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
287 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
292 { "p|print", "fmt:/,val:l", do_print
,
293 "/fmt expr", "print expression value (use $reg for CPU register access)", },
295 @item p or print
/@
var{fmt
} @
var{expr
}
297 Print expression value
. Only the @
var{format
} part of @
var{fmt
} is
301 { "i", "fmt:/,addr:i,index:i.", do_ioport_read
,
302 "/fmt addr", "I/O port read" },
307 { "o", "fmt:/,addr:i,val:i", do_ioport_write
,
308 "/fmt addr value", "I/O port write" },
313 { "sendkey", "string:s,hold_time:i?", do_sendkey
,
314 "keys [hold_ms]", "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)" },
316 @item sendkey @
var{keys
}
318 Send @
var{keys
} to the emulator
. @
var{keys
} could be the name of the
319 key or @code
{#
} followed by the raw value
in either decimal or hexadecimal
320 format
. Use @code
{-} to press several keys simultaneously
. Example
:
325 This command is useful to send keys that your graphical user
interface
326 intercepts at low level
, such as @code
{ctrl
-alt
-f1
} in X Window
.
329 { "system_reset", "", do_system_reset
,
330 "", "reset the system" },
337 { "system_powerdown", "", do_system_powerdown
,
338 "", "send system power down event" },
340 @item system_powerdown
342 Power down the
system (if supported
).
345 { "sum", "start:i,size:i", do_sum
,
346 "addr size", "compute the checksum of a memory region" },
348 @item sum @
var{addr
} @
var{size
}
350 Compute the checksum of a memory region
.
353 { "usb_add", "devname:s", do_usb_add
,
354 "device", "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')" },
356 @item usb_add @
var{devname
}
358 Add the USB device @
var{devname
}. For details of available devices see
362 { "usb_del", "devname:s", do_usb_del
,
363 "device", "remove USB device 'bus.addr'" },
365 @item usb_del @
var{devname
}
367 Remove the USB device @
var{devname
} from the QEMU virtual USB
368 hub
. @
var{devname
} has the syntax @code
{bus
.addr
}. Use the monitor
369 command @code
{info usb
} to see the devices you can remove
.
372 { "cpu", "index:i", do_cpu_set
,
373 "index", "set the default CPU" },
378 { "mouse_move", "dx_str:s,dy_str:s,dz_str:s?", do_mouse_move
,
379 "dx dy [dz]", "send mouse move events" },
381 @item mouse_move @
var{dx
} @
var{dy
} [@
var{dz
}]
382 Move the active mouse to the specified coordinates @
var{dx
} @
var{dy
}
383 with optional scroll axis @
var{dz
}.
386 { "mouse_button", "button_state:i", do_mouse_button
,
387 "state", "change mouse button state (1=L, 2=M, 4=R)" },
389 @item mouse_button @
var{val
}
390 Change the active mouse button state @
var{val
} (1=L
, 2=M
, 4=R
).
393 { "mouse_set", "index:i", do_mouse_set
,
394 "index", "set which mouse device receives events" },
396 @item mouse_set @
var{index
}
397 Set which mouse device receives events at given @
var{index
}, index
405 { "wavcapture", "path:F,freq:i?,bits:i?,nchannels:i?", do_wav_capture
,
406 "path [frequency [bits [channels]]]",
407 "capture audio to a wave file (default frequency=44100 bits=16 channels=2)" },
410 @item wavcapture @
var{filename
} [@
var{frequency
} [@
var{bits
} [@
var{channels
}]]]
411 Capture audio into @
var{filename
}. Using sample rate @
var{frequency
}
412 bits per sample @
var{bits
} and number of channels @
var{channels
}.
416 @item Sample rate
= 44100 Hz
- CD quality
418 @item Number of channels
= 2 - Stereo
423 { "stopcapture", "n:i", do_stop_capture
,
424 "capture index", "stop capture" },
427 @item stopcapture @
var{index
}
428 Stop capture with a given @
var{index
}, index can be obtained with
434 { "memsave", "val:l,size:i,filename:s", do_memory_save
,
435 "addr size file", "save to disk virtual memory dump starting at 'addr' of size 'size'", },
437 @item memsave @
var{addr
} @
var{size
} @
var{file
}
438 save to disk virtual memory dump starting at @
var{addr
} of size @
var{size
}.
441 { "pmemsave", "val:l,size:i,filename:s", do_physical_memory_save
,
442 "addr size file", "save to disk physical memory dump starting at 'addr' of size 'size'", },
444 @item pmemsave @
var{addr
} @
var{size
} @
var{file
}
445 save to disk physical memory dump starting at @
var{addr
} of size @
var{size
}.
448 { "boot_set", "bootdevice:s", do_boot_set
,
449 "bootdevice", "define new values for the boot device list" },
451 @item boot_set @
var{bootdevicelist
}
453 Define
new values
for the boot device list
. Those values will
override
454 the values specified on the command line through the @code
{-boot
} option
.
456 The values that can be specified
here depend on the machine type
, but are
457 the same that can be specified
in the @code
{-boot
} command line option
.
460 #
if defined(TARGET_I386
)
461 { "nmi", "cpu_index:i", do_inject_nmi
,
462 "cpu", "inject an NMI on the given CPU", },
466 Inject an NMI on the given
CPU (x86 only
).
469 { "migrate", "detach:-d,uri:s", do_migrate
,
470 "[-d] uri", "migrate to URI (using -d to not wait for completion)" },
472 @item migrate
[-d
] @
var{uri
}
473 Migrate to @
var{uri
} (using -d to not wait
for completion
).
476 { "migrate_cancel", "", do_migrate_cancel
,
477 "", "cancel the current VM migration" },
480 Cancel the current VM migration
.
483 { "migrate_set_speed", "value:s", do_migrate_set_speed
,
484 "value", "set maximum speed (in bytes) for migrations" },
486 @item migrate_set_speed @
var{value
}
487 Set maximum speed to @
var{value
} (in bytes
) for migrations
.
490 { "migrate_set_downtime", "value:s", do_migrate_set_downtime
,
491 "value", "set maximum tolerated downtime (in seconds) for migrations" },
494 @item migrate_set_downtime @
var{second
}
495 Set maximum tolerated
downtime (in seconds
) for migration
.
498 #
if defined(TARGET_I386
)
499 { "drive_add", "pci_addr:s,opts:s", drive_hot_add
,
500 "[[<domain>:]<bus>:]<slot>\n"
501 "[file=file][,if=type][,bus=n]\n"
502 "[,unit=m][,media=d][index=i]\n"
503 "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
504 "[snapshot=on|off][,cache=on|off]",
505 "add drive to PCI storage controller" },
509 Add drive to PCI storage controller
.
512 #
if defined(TARGET_I386
)
513 { "pci_add", "pci_addr:s,type:s,opts:s?", pci_device_hot_add
, "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...", "hot-add PCI device" },
520 #
if defined(TARGET_I386
)
521 { "pci_del", "pci_addr:s", do_pci_device_hot_remove
, "[[<domain>:]<bus>:]<slot>", "hot remove PCI device" },
525 Hot remove PCI device
.
528 { "host_net_add", "device:s,opts:s?", net_host_device_add
,
529 "tap|user|socket|vde|dump [options]", "add host VLAN client" },
532 Add host VLAN client
.
535 { "host_net_remove", "vlan_id:i,device:s", net_host_device_remove
,
536 "vlan_id name", "remove host VLAN client" },
538 @item host_net_remove
539 Remove host VLAN client
.
543 { "hostfwd_add", "arg1:s,arg2:s?,arg3:s?", net_slirp_hostfwd_add
,
544 "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
545 "redirect TCP or UDP connections from host to guest (requires -net user)" },
546 { "hostfwd_remove", "arg1:s,arg2:s?,arg3:s?", net_slirp_hostfwd_remove
,
547 "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
548 "remove host-to-guest TCP or UDP redirection" },
552 Redirect TCP or UDP connections from host to
guest (requires
-net user
).
555 { "balloon", "value:i", do_balloon
,
556 "target", "request VM to change it's memory allocation (in MB)" },
558 @item balloon @
var{value
}
559 Request VM to change its memory allocation to @
var{value
} (in MB
).
562 { "set_link", "name:s,up_or_down:s", do_set_link
,
563 "name up|down", "change the link status of a network adapter" },
565 @item set_link @
var{name
} [up|down
]
566 Set link @
var{name
} up or down
.
569 { "watchdog_action", "action:s", do_watchdog_action
,
570 "[reset|shutdown|poweroff|pause|debug|none]", "change watchdog action" },
572 @item watchdog_action
573 Change watchdog action
.
576 { "acl_show", "aclname:s", do_acl_show
, "aclname",
577 "list rules in the access control list" },
579 @item acl_show @
var{aclname
}
580 List all the matching rules
in the access control list
, and the
default
581 policy
. There are currently two named access control lists
,
582 @
var{vnc
.x509dname
} and @
var{vnc
.username
} matching on the x509 client
583 certificate distinguished name
, and SASL username respectively
.
586 { "acl_policy", "aclname:s,policy:s", do_acl_policy
, "aclname allow|deny",
587 "set default access control list policy" },
589 @item acl_policy @
var{aclname
} @code
{allow|deny
}
590 Set the
default access control list policy
, used
in the event that
591 none of the explicit rules match
. The
default policy at startup is
595 { "acl_add", "aclname:s,match:s,policy:s,index:i?", do_acl_add
, "aclname match allow|deny [index]",
596 "add a match rule to the access control list" },
598 @item acl_allow @
var{aclname
} @
var{match
} @code
{allow|deny
} [@
var{index
}]
599 Add a match rule to the access control list
, allowing or denying access
.
600 The match will normally be an exact username or x509 distinguished name
,
601 but can optionally include wildcard globs
. eg @code
{*@@EXAMPLE
.COM
} to
602 allow all users
in the @code
{EXAMPLE
.COM
} kerberos realm
. The match will
603 normally be appended to the end of the ACL
, but can be inserted
604 earlier
in the list
if the optional @
var{index
} parameter is supplied
.
607 { "acl_remove", "aclname:s,match:s", do_acl_remove
, "aclname match",
608 "remove a match rule from the access control list" },
610 @item acl_remove @
var{aclname
} @
var{match
}
611 Remove the specified match rule from the access control list
.
614 { "acl_reset", "aclname:s", do_acl_reset
, "aclname",
615 "reset the access control list" },
617 @item acl_remove @
var{aclname
} @
var{match
}
618 Remove all matches from the access control list
, and set the
default
619 policy back to @code
{deny
}.
622 #
if defined(TARGET_I386
)
623 { "mce", "cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", do_inject_mce
, "cpu bank status mcgstatus addr misc", "inject a MCE on the given CPU"},
626 @item mce @
var{cpu
} @
var{bank
} @
var{status
} @
var{mcgstatus
} @
var{addr
} @
var{misc
}
627 Inject an MCE on the given
CPU (x86 only
).
630 { "getfd", "fdname:s", do_getfd
, "getfd name",
631 "receive a file descriptor via SCM rights and assign it a name" },
633 @item getfd @
var{fdname
}
634 If a file descriptor is passed alongside
this command
using the SCM_RIGHTS
635 mechanism on unix sockets
, it is stored
using the name @
var{fdname
} for
636 later use by other monitor commands
.
639 { "closefd", "fdname:s", do_closefd
, "closefd name",
640 "close a file descriptor previously passed via SCM rights" },
642 @item closefd @
var{fdname
}
643 Close the file descriptor previously assigned to @
var{fdname
} using the
644 @code
{getfd
} command
. This is only needed
if the file descriptor was
never
645 used by another monitor command
.