SetFileInfo triggers Notify when it doesn't change file attribute about dokany HOT 3 OPEN

Hi @Lucasq11 ,

Thanks for the report and the analysis. Agree we should not notify if nothing has changed.

If we had the item cache in the Kernel, we could know whether a value changed or not.
The other option would be to have userland return a specific STATUS that informs that nothing changed and therefore no notification should be sent. The status should still be a success since the change was applied but just a NO_OP.
https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55
On top of my head, I don't know if there is an existing no op status.

from dokany.

Hi @Lucasq11 ,

Thanks for the report and the analysis. Agree we should not notify if nothing has changed.

If we had the item cache in the Kernel, we could know whether a value changed or not. The other option would be to have userland return a specific STATUS that informs that nothing changed and therefore no notification should be sent. The status should still be a success since the change was applied but just a NO_OP. https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55 On top of my head, I don't know if there is an existing no op status.

I'm trying to modify the driver to avoid this issue, there's problem about signing. How can I acquire an avaliable cert to sign dokan1.sys when testsigning is off?

from dokany.

Hi @Lucasq11 ,
Thanks for the report and the analysis. Agree we should not notify if nothing has changed.
If we had the item cache in the Kernel, we could know whether a value changed or not. The other option would be to have userland return a specific STATUS that informs that nothing changed and therefore no notification should be sent. The status should still be a success since the change was applied but just a NO_OP. https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-erref/596a1078-e883-4972-9bbc-49e60bebca55 On top of my head, I don't know if there is an existing no op status.

I'm trying to modify the driver to avoid this issue, there's problem about signing. How can I acquire an avaliable cert to sign dokan1.sys when testsigning is off?

You can order an EV signing certificate for your company. I have used GlobalSign for that for example. You get a USB token that you download the certificate to, use that to sign a cab file with a .inf and the driver, upload to Microsoft's attestant signing portal and after a few hours you get a zip file back with the signed driver.

from dokany.