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/
I am trying to query Information about a file using IRP_MJ_QUERY_INFORMATION(basically FILE_INFORMATION_CLASS) by calling FltPerformSynchronousIo .
I get 0xC0000010.
If I try using FltReadfile function my driver was crasing. In dump I could see raw reads. To confirm it I checked for VPB_MOUNTED flag. I called FltReadFile only if the flag is mounted. post that driver was not crashing.
Cant we use FltReadFile for raw device? will this API work only if the volume is mounted?
Is there any other API I can use to read for unmounted volume?
|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 January 2023||Live, Online|
|Developing Minifilters||20 March 2023||Live, Online|
|Writing WDF Drivers||TBD 2023||Live, Online|
|Internals & Software Drivers||17 April 2023||Live, Online|