How to disable file change notification?

[onexzero]

Feature request can skip this form. Bug report must complete it. Check List must be 100% match or it will be automatically closed without further discussion. Please remove this line.

Environment

• Windows version: Windows 10,11
• Processor architecture: AMD 5800X
• Dokany version: 2.x
• Library type (Dokany/FUSE): DokAny
  Logfile.zip

Check List

• I checked my issue doesn't exist yet
• My issue is valid with mirror default sample and not specific to my user-mode driver implementation
• I can always reproduce the issue with the provided description below.
• I have updated Dokany to the latest version and have reboot my computer after.
• I tested one of the last snapshot from appveyor CI

Description

The exact cause is unknown, but sometimes the window is constantly refreshed. For example, after editing a certain ppt file, the NotifiyChangeDirectory->GetFileInformation->CloseFile->NotifyChangeDirectory..... loop continuously repeats for that file until the Explorer is closed. This does not appear to be a problem with DOKAN itself, but we need a way to block it.

Logs

Please attach in separate files: mirror output, library logs and kernel logs.
In case of BSOD, please attach minidump or dump analyze output.

[Liryna]

DokanNotifyReportChange is only called when there is a FS action that requires to be notified.
GetFileInformation and CloseFile are not events that call DokanNotifyReportChange unless a file is deleted.

Could you enable the driver logs by using the mount option and look for this line to see which action is reported ?

dokany/sys/dokan.c

Lines 539 to 541 in 70f27b2

	DOKAN_LOG_FINE_IRP(RequestContext,
	"FCB=%p NameOffset=%x FilterMatch=%x Action=%x Success",
	Fcb, nameOffset, FilterMatch, Action);

[onexzero]

Occasionally, after editing, saving and exiting PowerPoint, the log

[DokanNotifyReportChange0][FFFFA503F6317010]: FCB=FFFFA503F5C62CF0 NameOffset=2 FilterMatch=10 Action=3 Success

It keeps repeating.
Notify.LOG
Notify.PML.log

[VCB][IRP_MJ_DIRECTORY_CONTROL][IRP_MN_NOTIFY_CHANGE_DIRECTORY]: Begin ProcessId=7820

where 7820 is Windows Explorer.
Why does Explorer keep requesting changes even though the file is no longer changing and has already reported matching events?

[Liryna]

Thanks for the logs @onexzero ! Very helpful. I was able to find out what is happening and made a fix 0c1a121
I should schedule a new version in the coming days.

[onexzero]

I tested your patch on 32bit windows. it seems to work so far. When a new version comes out, I will test it on 64-bit as well.

[IsaMorphic]

@Liryna Hello, I'm having an issue with the latest version (2.0.4.1000) where none of the notifications (CreateFile, MoveFile, etc) are happening when using the DokanNet library. I believe it may be related to these changes? If not I will gladly open an issue on the dotnet repo :)

[Liryna]

@yodadude2003 it is unlikely. Could you open an issue ?

[IsaMorphic]

Can do when I'm on my PC next. 👍

[IsaMorphic]

@Liryna dokan-dev/dokan-dotnet#310