lock-breaking ui

[John A Meinel]

John Yates wrote:
> John A Meinel wrote:
> 
>>                                                   I'm guessing that on
>> Windows, you wouldn't be able to break a held lock anyway. (I know you
>> can't do anything to an open file. Can you rename a directory if the
>> file underneath it is open? Maybe, but I'm pretty sure you can't delete it).
> 
> I think that you may be referring to the fact that on Windows any open operation
> takes out a "path lock" on every dereferenced name along the path to the target
> file.  This semantic is an underpinning of SMB/CIFS.  That is in SMB/CIFS the
> abstraction of a file system has no conceptual equivalent to inode numbers / file
> indices.  Thus, using only the concepts available within the abstraction, the
> only way to convey the identity of an open file is by its path.
> 
> /john

Yeah, so on Windows, you can't break locks, nor do atomic replace. So I
suppose if you can break a Windows lock, that means the client accessing
the branch has truly stopped working. For once, Windows difficult
behavior is a benefit. :)

John
=:->


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