RUI_PURGE & SLI_PURGE Verbs Fail When Using the Thunking DLLs (148739)
The information in this article applies to:
- Microsoft SNA Server 2.11, when used with:
- the operating system: Microsoft Windows NT
- Microsoft SNA Server 2.11 SP1, when used with:
- the operating system: Microsoft Windows NT
This article was previously published under Q148739 SYMPTOMS
The 16-bit Windows LUA RUI_PURGE and SLI_PURGE calls fail when you run over
the SNA Server Windows NT thunking DLLs.
CAUSE
The thunking library runs on a Win32 system in the Win16 VDM. When it
receives an RUI call from a Win16 application, it allocates a new Verb
Control Block (VCB) and copies all the entries from the original VCB into
it. It does this because the packing of the VCBs are different for Win16
and Win32. It then passes the new VCB into the Win32 RUI library, which
processes the verb.
The RUI_PURGE call has as one of its parameters the address of the VCB for
the RUI_READ that is to be canceled. The thunking library, when it receives
an RUI_PURGE verb, allocates a new VCB for the RUI_PURGE with Win32
packing, copies the entries from the original VCB into it and passes that
into the Win32 RUI library to be processed. The new VCB that is passed into
the library still has as its parameter the address of the old RUI_READ VCB.
The Win32 library completely fails to recognize this address (it has only
seen the address of the new VCB), and so returns the RUI_PURGE verb with an
error.
RESOLUTION
The RUI thunking library has been changed to allow the new VCB for the
RUI_PURGE to pass in the address of the new VCB for the RUI_READ, not the
old VCB for the RUI_READ. The following files have been updated:
<snaroot>\SYSTEM\THUNK\WINRUI.DLL
<snaroot>\SYSTEM\THUNK\WINSLI.DLL
STATUS
Microsoft has confirmed this to be a problem in SNA Server versions 2.11
and 2.11.sp1.
This problem was corrected in the latest Microsoft SNA Server 2.11 U.S.
Service Pack. For information on obtaining the service pack, query on the
following word in the Microsoft Knowledge Base (without the spaces):
Modification Type: | Major | Last Reviewed: | 11/19/2003 |
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Keywords: | kbbug kbfix kbnetwork KB148739 |
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