On Thu, Dec 19, 2019 at 5:43 PM Andy Lutomirski <luto@xxxxxxxxxx> wrote: > > > I don't think this is MODE_READ. By copying an fd from the task, you > can easily change its state. Would PTRACE_MODE_ATTACH_REALCREDS work? I'm curious what kind of state change you can cause by borrowing an FD? > > IMO it would be really nice if pidfd could act more like a capability > here and carry a ptrace mode, for example. But I guess it doesn't > right now. > > > --Andy
