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Posted Oct 21, 2015 8:49 UTC (Wed) by ldo (guest, #40946)
Parent article: Rich access control lists

I was reading about MULTICS a little while back, and discovered that its protection system didn’t suffer from the problem that POSIX-based systems have with multiple users trying to manage files in a common “group” directory—that every file can only have one owner, it cannot belong collectively to the group.

It looks like RichACLs finally solve that problem.

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History Repeats

Posted Oct 21, 2015 17:15 UTC (Wed) by bfields (subscriber, #19510) [Link] (1 responses)

Well, we've had posix ACLs since 2002, I think. Rich ACLs are more about SMB, NFSv4, and Windows compatibility. (And without posix ACLs you can share files using groups.)

History Repeats

Posted Nov 1, 2015 2:25 UTC (Sun) by Wol (subscriber, #4433) [Link]

Pr1mos was a Multics derivative. And it had ACLs since v19.4 (actually, 19.0 but they were broken quite bad), and that came out about 1984. I can't remember the details, but I know I came across a v19.2 system (very unusual), and when I tried to use some commands they crashed the system ...

Cheers,
Wol