Re: Potentially undesirable interactions between vfork() and time namespaces

[Andrei Vagin]

On Fri, Sep 02, 2022 at 08:01:57PM +0300, Alexey Izbyshev wrote:
> On 2022-09-01 21:11, Eric W. Biederman wrote:

<snip>

> >  static int check_setns_flags(unsigned long flags)
> >  {
> >  	if (!flags || (flags & ~(CLONE_NEWNS | CLONE_NEWUTS | CLONE_NEWIPC |
> > 
> > 
> > 
> > To keep things from being too confusing it probably makes sense to
> > rename the nsproxy variable from time_ns_for_children to
> > time_ns_for_new_mm.  Likewise timens_on_fork can be renamed
> > timens_on_new_mm.
> > 
> Do you imply renaming "/proc/[pid]/ns/time_for_children" as well, or will it
> be preserved for compatibility?

I don't think this is possible. It is used by a few tools already.