File preview IOs

NTFSD
1

Hi!

Is there a way to distinguish between Read IOs invoked by Windows Explorer
for file preview (for example image preview, icons, document preview and
metadata) and file copy or read operations invoked by all other applications
(such as MS Office, Notepad etc.).

I noticed that Windows Explorer doesn’t change access time in case of file
preview. What API is used to prevent update of the access time?

Thanks,
Dani

2

ZwSetInformationFile() allow you prevent updating the access time.

Gonzalo.

-----Mensaje original-----
De: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] En nombre de Dani Polovets
Enviado el: jueves, 28 de junio de 2007 17:32
Para: Windows File Systems Devs Interest List
Asunto: [ntfsd] File preview IOs

Hi!

Is there a way to distinguish between Read IOs invoked by Windows
Explorer
for file preview (for example image preview, icons, document preview and
metadata) and file copy or read operations invoked by all other
applications
(such as MS Office, Notepad etc.).

I noticed that Windows Explorer doesn’t change access time in case of
file
preview. What API is used to prevent update of the access time?

Thanks,
Dani

Questions? First check the IFS FAQ at
https://www.osronline.com/article.cfm?id=17

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