[OpenAFS-win32-devel] Re: file locking

[Jeffrey Altman]

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It appears that the problems with byte-range locks in the existing
SMB/CIFS client are two-fold:

(1) the ReceiveV3LockingX function intentionlly ignores any request
    for a lock whose offset does not equal zero and whose length is
    not the size of the file

(2) the cm_scache_t object contains a lock queue but the cm_Lock
    function does nothing to attempt to manage lock ranges.  Any
    lock that exists will result in subsequent non-overlapping locks
    failing with a CM_ERROR_WOULDBLOCK error.

It seems clear to me that cm_Lock and cm_Unlock need to be fixed both
for the use of the SMB/CIFS client but also if the IFS client wants to
be able to use them.

Jeffrey Altman



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