Windows NT DDK: ZwFsControlFile and other Zw functions?

Some Windows NT (not from Microsoft) drivers contain
calls of undocumented in NT4.0 DDK functions.
ZwFsControlFile is only one of them.
Do anybody knows if any documentation on this subject is available, or it even doesn't worth to try to find it?
Thank you in advance,
Sergey
FrolovAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

amartin030297Commented:
ZW file control is the kernel mode version for file I/O
(ZwCreateFile/ZwWrite/ZwRead/etc)..  They are VERY important
functions and are part of Windows NT, Memphis, etc.. and they
are documented with the WDM documentation (provided you are
under NDA w/M$).
  And YES its worth finding more about if your writing drivers.

      --Aaron
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
FrolovAuthor Commented:
Dear Aaron,

Thank you for your answer on my question. I'd like to grade your
answer as Excellent, the only things remains not very clear for
me (excuse me if I don't know may be so obvious terms).

You wrote:
"they are documented with the WDM documentation (provided you are
under NDA w/M$)."

Could you be so pleased to clarify what is:
a) WDM ?
b) NDA (Non Disclosure Agreement?)
c) w/M$ (without much money?)
d) How to start with getting this WDM?

Thank you again,
Sergey

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Development

From novice to tech pro — start learning today.