Re: devtmpfs default permissions

[Mark Rosenstand <rosenstand@gmail.com>]

On Thu, 2009-10-29 at 18:12 +0100, Kay Sievers wrote:
> On Thursday, October 29, 2009, Greg KH <greg@kroah.com> wrote:
> > On Thu, Oct 29, 2009 at 03:02:50PM +0100, Mark Rosenstand wrote:
> >>
> >> I've been using the devtmpfs patch for 2.6.31 and recently mainline
> >> 2.6.32-rc5.  I've noticed that /dev now have default tmpfs permissions,
> >> i.e. 1777.
> >>
> >> One can chmod the directory, but would it not make sense to use a more
> >> less permissive mode (e.g. 0755) by default?
> 
> Yeah, sounds good.
> 
> > I think the patch sent by Kay to the linux-kernel mailing list yesterday
> > will solve this problem.  It uses the default umask instead.
> >
> > Can you test it out to verify this?

Default umask would probably be even better than a hardcoded one. Just
tried latest git, seems to still get 1777 permissions.

> I'll prepare a patch to fix that, we need to pass "mode\a55" to the
> mount command, to set the tmpfs root directory mode.

Thanks guys, rock on! :)