badly authored udf file systems

[Shaya Potter <spotter@cs.columbia.edu>]

I have a couple of DVDs that seem to have been authored badly, such that
when they are mounted, none of the directories have the execute bit, and
hence means that only root can enter the VIDEO_TS folder and hence only
root can play the dvd.

in looking at the ecma spec
(http://www.ecma-international.org/publications/standards/Ecma-167.htm)
and section 4/14.9 where the file entry record is discussed, it shows
that the permission scheme sort of mirrors unix (i.e. owner, group,
other and read/write/execute bits).  However, the spec is ambigious
because when it refers to the execute bit, it doesn't talk about
directories at all.  In normal unix, of course one needs the execute bit
set, however, its probable other systems dont have such a semantic and
hence buggy dvd authoring programs on those platforms don't check for
it.

Would it be useful to have a file system option to specify something
along the lines "buggy_dvd" which automatically gives all directories a
0x111 bump?

I ran into this w/ gnome's gnome-volume-manager which automatically
mounted the dvd on insertion, but wasn't able to play it unless the dvd
player was running as root.

thanks,

shaya