PROPOSAL: extend UNIX_INFO2 to mark existence of ACLs

James Peach jpeach at
Tue Jan 22 21:05:56 GMT 2008

Hi all,

Unix SMB client could often avoid a few round-trips to the server if  
they could tell whether a file had an ACL at the point where they  
query its metadata (presumably using the UNIX_INFO2 info level).

Since the permissions field is 64bits, how about stealing the high bit  
of this field to indicate whether the file might have an ACL?

We'd probably need a mechanism for clients to figure out whether the  
bit was meaningful or not ....

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