[Gllug] File permissions and umask on Ubuntu (and I think probably, Debian)

[John Winters]

Progga wrote:
> On Sat, Jan 06, 2007 at 02:48:34PM +0000, John Winters wrote:
>> I'd still be interested if anyone knows how to change the global umask 
>> for users in Ubuntu or Debian though.
> 
> This doesn't speak about umask but still might be relevant-
> 	http://linux.derkeiler.com/Mailing-Lists/Debian/2005-07/2641.html

Not only not relevant I'm afraid, but the advice given by the poster 
there is (AFAICS) completely wrong.  The sticky bit which he advocates 
setting *prevents* people other than the creator modifying a file, which 
is the opposite of what the person to whom he was responding asked for.

I have managed to find something relevant, but I still haven't solved my 
problem.

This page:

http://wiki.debian.org/DebianDesktopHowTo

describes how to configure things to set umask correctly using 
libpam-umask and I've done what it says.  This has had the desired 
effect on text mode logins, but not on Gnome sessions invoked through 
gdm.  I've tested putting different settings in 
/etc/pam.d/common-session and they come through correctly in an 
old-fashioned login, but every time I login through gdm I get 0022, 
regardless of what I asked for.

Still investigating.

John
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