On Sun, Jun 23, 2019 at 02:32:30PM +0300, Dmitry V. Levin wrote: > On Sat, Jun 22, 2019 at 12:13:39AM +0200, Christian Brauner wrote: > [...] > > Out of curiosity: what makes the new flag different than say > > CLONE_NEWCGROUP or any new clone flag that got introduced? > > CLONE_NEWCGROUP too would not be detectable apart from the method I gave > > you above; same for other clone flags. Why are you so keen on being able > > to detect this flag when other flags didn't seem to matter that much. > > I wasn't following uapi changes closely enough those days. ;) (Seriously, you had one job. :) I'm joking of course.) What you want makes sense to me overall. This way userspace can decide easier whether to manage a process through a pidfd or needs to fallback to a pid. Christian
