Did you try vfsModeReadWrite open mode?

Jan Slodicka

----- Original Message -----
From: "Mark A. Peters" <[EMAIL PROTECTED]>


> My app maintains a cache of information in a file on a VFS volume.  In
order
> to improve performance of the cache, I was hoping that I could update
> selected entries in this file, rather than writing the whole thing out
> whenever anything changes.  Unfortunately, it appears that this is not
> supported.  Can somebody confirm/deny this?
>
> What the code does is open the file for write access (no truncate), seek
to
> the proper portion of the file, write the data, then close the file.  The
> result, however, was that the only data in the file was what was written,
> i.e., the file was truncated to zero length, then the data written.
>
> Is that the way it is supposed to work?  Is there some other way to update
> selected portions of a VFS file?
>
> Thanks,
>
> Mark Peters
>
>
>
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