Managing a Pool of Keys in WDF

NTDEV
1

I am working on developing a driver to manage a pool of keys. The driver will check if a key is unused, mark it as used, and then proceed with further processing. The main objective is to identify a free key from the pool. Since I am new to the Windows Driver Framework (WDF), I am unsure if there is an existing data structure for managing a pool of keys. If there isn't, I plan to use a static array, as I know the maximum number of keys that need to be managed.

2

There's nothing magic about keys. It's just an array of data. You could use a WDFCOLLECTION.

3

Well you could do that but if you have a lot of keys searching an array sort of sucks. Personally I would have two linked lists of keys, one for free keys and one for in use keys. Then I just can pop a key off the free list and push it on the dirty list. Of course you need to have an appropriate lock to control access.

4

Hi,Tim! Excuse me,I have encountered a problem, which is in my article. Can you help me take a look? Thank you, because I found that there seem to be very few people online on the forum. :flushed: this is the topic link When I go to FltWriteFile during Pre or Post in Minifilter, it will cause me to continuously enter the SetFileImformation callback routine

5

Let's see how many violations you committed here.

  1. You hijacked another thread to ask a question of your own.
  2. You asked an NTFSD question on an NTDEV thread.
  3. You only waited a few hours (in the middle of the night in the US) before complaining about a lack of response.

NTFSD has exactly the right folks to answer your question. They'll answer when they can. Remember, we're all volunteers.

1 Like
6

Okay, thank you for your correction. I have always thought that everyone is a volunteer, and it may be because I used translation software that my tone of speech was impolite. I am very sorry, and I will actively correct any violations so as not to affect everyone