This article describes how to open a disk file from a kernel-mode device driver and how to read from or write to the file. Deviec device drivers refer to a file by its object name. The following code example illustrates how to refer to a how to write device by its object name.
Therefore, you can sequentially read or write to the file later. Additionally, you can access the file at a random how to write device. The following code example illustrates how to obtain a file handle. When you have finished modifying the file, close the handle by using the ZwClose function. The following code example illustrates how to write to a file.
Windows More Need more help?
Write your first driver code
Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback?
Watch on your big screen
The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon.
Pictures helped. Didn't match my screen.
Download the O’Reilly App
Incorrect instructions. Too technical. Not enough information.
Not enough pictures. Any additional feedback? Submit feedback.]