Albert D. Cahalan wrote:
>
> Wow, that is almost pure NT 4.0, with 4 of 7 authors being from Sun!
> The only difference is that the 17 access mask bits are all specific;
> there is no concept of mapping generic bits to object-specific bits.
> The inheritance, types, and scanning algorithm are all from NT.
>
> This is a good system; it can handle Coda and Netware fairly well.
>
> Well, there you go. Windows NT features are required for UNIX now.
> Fortunately it isn't too late for Reiserfs and ext2. JFS seems to
> have a few interesting bits already, due to the OS/2 port. XFS will
> need to be dragged out of the dark ages of withdrawn POSIX drafts.
> UFS has several incompatible ACL flavors already, from Sun, Digital...
>
XFS itself does not implement ACLs, it just provides storage for them
in extended attributes, and calls out to a security component which
does the acl checking. ACL inheritence would be a function of a security
subsystem too, although if it was implemented by copying the acl onto
a newly created file, and it has to be done atomically so that after a
crash you get the file with the acl, or no file, then the filesystem has
to do work.
Steve
------------------------------------------------------------------------------
Steve Lord voice: +1-651-683-5291
Silicon Graphics Inc
655F Lone Oak Drive email: lord@sgi.com
Eagan, MN, 55121, USA
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