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Q86723: PRB: Creating File with Exclusive Access Allows Concurrent Use

Article: Q86723
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:3.1
Operating System(s): 
Keyword(s): kb16bitonly
Last Modified: 06-NOV-1999

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The information in this article applies to:

- Microsoft Windows Software Development Kit (SDK) 3.1 
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SYMPTOMS
========

When an application calls the OpenFile() API and specifies the OF_CREATE and
OF_SHARE_EXCLUSIVE flags, the created file is not open for exclusive access.
Another application can also open the file.

RESOLUTION
==========

To create a file and open it for exclusive access, an application must create
the file, close the file, and open it for exclusive access.

MORE INFORMATION
================

OpenFile() passes its parameters to MS-DOS Interrupt 21h. OpenFile() and
Interrupt 21 exhibit the same behavior in this regard.

Additional query words: 3.10 no32bit

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Keywords          : kb16bitonly 
Technology        : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Version           : WINDOWS:3.1

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