Messages in this thread | | | Subject | Re: NFSv4 ACLs (was: ...ACL's and reiser...) | Date | Thu, 27 Jul 2000 17:24:30 -0500 | From | Steve Lord <> |
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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 need to be dragged out of the dark ages of withdrawn POSIX drafts.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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