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monitor: allow device_del to accept QOM paths

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Currently device_del requires that the client provide the
device short ID. device_add allows devices to be created
without giving an ID, at which point there is no way to
delete them with device_del. The QOM object path, however,
provides an alternative way to identify the devices.

Allowing device_del to accept an object path ensures all
devices are deletable regardless of whether they have an
ID.

 (qemu) device_add usb-mouse
 (qemu) qom-list /machine/peripheral-anon
 device[0] (child<usb-mouse>)
 type (string)
 (qemu) device_del /machine/peripheral-anon/device[0]

Devices are required to be marked as hotpluggable
otherwise an error is raised

 (qemu) device_del /machine/unattached/device[4]
 Device 'PIIX3' does not support hotplugging

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1441974836-17476-1-git-send-email-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Commit message touched up, accidental white-space change dropped]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-09-11 13:33:56 +01:00 • committed by Markus Armbruster
parent 9e72681d16
commit 6287d827d4
4 changed files with 24 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

7
qmp-commands.hx
View file

@ -321,13 +321,18 @@ Remove a device.
Arguments:
- "id": the device's ID (json-string)
- "id": the device's ID or QOM path (json-string)
Example:
-> { "execute": "device_del", "arguments": { "id": "net1" } }
<- { "return": {} }
Example:
-> { "execute": "device_del", "arguments": { "id": "/machine/peripheral-anon/device[0]" } }
<- { "return": {} }
EQMP
{