In my driver, i call the function export by a kernel mode dll, while
this dll also include a kernel mode dll!

(Driver ==> kernel mode DLL(A) ==> kernel mode DLL(B)). Now when os
call the driver, the OS will blue screen.

The bugcheck is the kernel mode DLL does not have DriverEntry!

this is the message:

STOP: c0000263 {Driver Entry Point Not Found}
The \SystemRoot\System32\DRIVERS\vtminivt.sys device driver could not
locate the entry point _vsnwprintf in driver ntoskrnl.exe.
Break instruction exception - code 80000003 (first chance)

I must keep this calling relation(Must keep the two DLL)

Does any body know how to solve this problem? Thanks very much

read the error. it does not say that you do not have a DriverEntry, it is
saying that you have an unresolved import

i am guessing you started to use or are already using ntstrsafe.h and trying
to load your driver on win2k. Add the following before #including
ntstrsafe.h

#define NTSTRSAFE_LIB

or add it to your sources file's C_DEFINES, C_DEFINES=$(C_DEFINES)
/DNTSTRSAFE_LIB

this will put the impl of _vsnwprintf into your driver via ntstrsafe.lib

d

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"江民" <dongy117@gmail.com> wrote in message
news:b045fba6-a5c8-4ec1-9a13-c58ca9e0b8af@n1g2000prb.googlegroups.com...

Hi Doron:
Thank you very much! The problem has been solved by you
problem!

Hi Doron:
I also have a question. Why the same driver used fine in XP
and Vista, but in 2000, it will report this problem? Is it caused by
_vsnwprintf problem? thanks.

XP and later exported vsnwprintf which means that you can use ntstrsafe.h
in non lib form can be used on these platforms. ntstrsafe.lib was created
specifically to support win2k and this missing export

d

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"江民" <dongy117@gmail.com> wrote in message
news:6407b0f7-e003-4c4a-8c40-036321088a82@h1g2000prh.googlegroups.com...

hi Doron:
Thank you for you answer! I'm clear now!