Information about 'flags' parameter in createMachine function

[AdityaM]

Hello,
In the SDK documentation of Virtual Box version 5.1.8, for 'createMachine()' function, the 5th argument in that function is for flags. I wanted to get get more details related to that argument, like what flags can be set during creation and how can we read back those flag values?
Can I set some unique value in any flag element that I can read back to validate that this machine is created by 'me' and not using any other means? Kindly let me know if this is possible?
Thanks

[socratis]

From the 5.1.14 SDKRef.pdf, as well as the online SDK reference (https://www.virtualbox.org/sdkref/inter ... 161a4da595):

flags
Additional property parameters, passed as a comma-separated list of “name=value” type entries. The following ones are recognized: forceOverwrite=1 to overwrite an existing machine settings file, UUID=<uuid> to specify a machine UUID and directoryIncludesUUID=1 to switch to a special VM directory naming scheme which should not be used unless necessary.

Also, a quick glance at the "src/VBox/Main/src-server/VirtualBoxImpl.cpp, createMachine" reveals pretty much the same thing.

[AdityaM]

Hello,
Yes, I did have a look at the documentation and the point that you have mentioned about flags is correct. But I think if these are the only flags that we have access to, then I don't think I can use them for the purpose I was thinking for.
What I am looking is for a unique way to identify that the Virtual Machine is created by the software from where the createMachine() API is getting called. So do you think if there is a way to do so? If yes, kindly suggest.
An expected scenario in my case is something like -
"A Virtual Machine is created (cloned) from the software (application) which uses this API, and later on before executing/starting this Virtual Machine, I can do a check if the Machine is created using the same software (application) or not, and take appropriate action if the Virtual Machine is not created using the same application."

To achieve this, what I think I need is, a way to add "unique part" to Virtual Machine while creating it, which does not alter the VM functionality.

Your suggestion on this topic would be really helpful.

Regards

[noteirak]

The best way to achieve that is using the Extra Data functionality which is an arbitrary key/value pair that can be set per VM.
See https://www.virtualbox.org/sdkref/inter ... 63602f795a

[AdityaM]

Thanks a lot for the pointer..I think it is working as per my expectations