Hallo, Russell!

*** Am Mittwoch 20. September 1995 um 00:30 schrieb Russell Coker an Thomas Seeling:

 PT>>> just another example of unixish dirty file system hacks, like doing
 PT>>> unlink() on an open file :)

 RC>    You can do the same thing under OS/2 by opening the file in deny
 RC> read/write mode.
This is not just quite the same.

 RC>    I believe that this is due to UNIX lacking effective file locking.  So
 RC> you can't stop a process from deleting a file while another process is
 RC> using it.  So you just allow the process with the open file to keep using
 RC> it - the deletion process will complete when there are no open handles to
 RC> the file.

This is false in this general speaking. Of course there are enough
implementations whose API offers nice mechanisms like semaphores, shared
memory, file locking etc.


Tschau...Thomas

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