Where does the plus sign in file permissions come from?

[Martin Pitt]

Hello Otto,

Otto Kekäläinen [2010-03-16 22:01 +0200]:
> crw-rw----+ 1 root video 212, 4 2010-03-14 08:20 ca0
> [...]
> 
> Where does the +-sign come from? 
> 
> As far as I know, Ubuntu does not use ACL by default.

It's indeed from ACLs, and Ubuntu has used ACLs on devices since
around hardy. First it came from hal, and in karmic the equivalent
functionality moved to udev (see /lib/udev/rules.d/70-acl.rules)

Martin
-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)