Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results

Home NTFSD
Before Posting...
Please check out the Community Guidelines in the Announcements and Administration Category.

More Info on Driver Writing and Debugging


The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.


Check out The OSR Learning Library at: https://www.osr.com/osr-learning-library/


How to determine read and write in IRP_MJ_CREATE pre operation

cc_vvcc_vv Member Posts: 3

I tried to determine the read and write in pre create to decide whether to perform a simple redirect. If it is a read operation, I will not make any changes, otherwise I will simply redirect it using simrep.

I know that there is a variable whose name is like satisfying this need.

FltObjects->FileObject->ReadAccess

But it doesn't seem to work

In addition, in a post in 2005, it was said that Create cannot determine whether it is a read or write operation, and can only judge whether it is opened or created. for reference only.

thanks everyone..

Comments

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Upcoming OSR Seminars
OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!
Kernel Debugging 30 Mar 2020 OSR Seminar Space
Developing Minifilters 15 Jun 2020 LIVE ONLINE
Writing WDF Drivers 22 June 2020 LIVE ONLINE
Internals & Software Drivers 28 Sept 2020 Dulles, VA