On 08/07/2009 05:47 PM, Dave Airlie wrote: > On Fri, 2009-08-07 at 16:42 -0400, Casey Dahlin wrote: >> On 08/06/2009 01:26 AM, Dave Airlie wrote: >>> On Mon, 2009-08-03 at 15:08 +0530, Rahul Sundaram wrote: >>>> Hi >>>> >>>> A few days back I ran into >>>> >>>> http://lists.x.org/archives/xorg-devel/2009-July/001293.html >>>> >>>> I am wondering, since we are already using KMS in most places in Fedora, >>>> how far are we from achieving this by default in a Fedora release? >>> non-root X is a big security hole at the moment, and until we get >>> revoke() support in the kernel, we can probably move X to running as a >>> special user, and maybe once we get revoke to running as the real user. >>> >>> However it doesn't solve the issue how we know we need or don't need >>> root since X only figures out what graphics drivers are needed after >>> starting, so if you needed a non-kms gpu driver we wouldn't know >>> until after we'd started as non-root. >>> >>> Dave. >>> >> Why can't we just start as root or with the setuid bit, and use the standard set*uid() calls to drop what we don't need once we know what we're doing? >> > > We have to undo some stuff when X exits. > > Dave. > > I meant start as setuid, then determine if root was necessary at all. If it is, keep running as root for the duration. If not, drop privileges. --CJD -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
