Patch: Convert SMB_VFS_REALPATH to returning an NTSTATUS

[Richard Sharpe]

Hi folks,

Attached is a patch for discussion.

On several occasions now I have wanted to return
NT_STATUS_PATH_NOT_COVERED from VFS functions like SMB_VFS_REALPATH
and SMB_VFS_STAT because these are called really early in the
processing of requests to do with file.

The alternative is to do something like:

    #define EPATHNOTCOVERED 1000

and then add a mapping to the error mapping functions, which is fuggly.

This seems like a better approach.

Comments welcome.

-- 
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)
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