umask, ACL inheritance and setgid +s not working with copy from flash drive in nautilus

[Tony Arnold]

On Tue, 2010-09-14 at 22:05 -0400, Rashkae wrote:
> Tony Arnold wrote:
> > Everyone seems to have ignored my contribution to this thread. If I'm
> > wrong just tell me, but please do not just ignore me.
> > 
> > Andy, you might let us know what permissions you were expecting given
> > the ACL you had set up on the directory.
> 
> >>
> >> I think the permissions are correct. The defaults in the ACL say a file
> >> should get rwxrwxr-x but this is then AND'd with the default mask of rwx
> >> giving rwx------
> >>
> >> Or am I missing something?
> >>
> 
> You're missing that the files he's copying have a permission of 600, 
> which is preserved when they are copied to the new folder.  The ACL 
> therefore does not get AND'd with rwxrwxr-x as it would with default 
> mask, but rw--------, and therefore, doesn't work as wanted.
> 

No, the post I was responding to showed the resulting permissions on the
file as -rwx------, which is 700 and ties in with my logic above.

> > andy.graybeal at buddleia:/srv/Desktop/Tech$ ls -lah cabling.txt
> > -rwx------+ 1 andy.graybeal tech 2.8K 2010-07-28 20:40 cabling.txt

Have I missed an earlier post with more information?

Regards,
Tony.
-- 
Tony Arnold,                        Tel: +44 (0) 161 275 6093
Head of IT Security,                Fax: +44 (0) 705 344 3082
University of Manchester,           Mob: +44 (0) 773 330 0039
Manchester M13 9PL.                 Email: tony.arnold at manchester.ac.uk