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/


Find the File type in mini filter driver

ANTUCWANTUCW Member Posts: 9
edited April 2019 in NTFSD

Hi all. I have a file system mini filter driver.Here I am trying to find the file type(eg .txt,.pdf) using file signature. Can you provide any solution?

Comments

  • ANTUCWANTUCW Member Posts: 9

    Is there a possible way to get the file type using FltGetFileSystemType function

  • Scott_Noone_(OSR)Scott_Noone_(OSR) Administrator Posts: 3,260

    Obviously you need to read the file if you want to know what type of file it is. You absolutely, 100% do not want to do this in kernel mode, down that path lies madness (and an endless attack surface). FltCreateSectionForDataScan and a user mode parser?

    -scott
    OSR

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