Quoting Dave Hansen (dave@xxxxxxxxxxxxxxxxxx):
> On Mon, 2009-03-02 at 11:44 -0600, Serge E. Hallyn wrote:
> > Quoting Dave Hansen (dave@xxxxxxxxxxxxxxxxxx):
> > > On Mon, 2009-03-02 at 11:22 -0600, Nathan Lynch wrote:
> > > > No.. I mean what if a process 1234 does
> > > >
> > > > f = fopen("/proc/1234/stat", "r");
> > > >
> > > > and is then checkpointed. Can that path be resolved during restart,
> > > > before pid 1234 is alive?
> > >
> > > Heh, that's a good one.
> > >
> > > It does mean that we can't do restore like this:
> > >
> > > for_each_cr_task()
> > > restore_task_struct()
> > > restore_files()
> > > ...
> > >
> > > We have to do:
> > >
> > > for_each_cr_task()
> > > restore_task_struct()
> > > for_each_cr_task()
> > > restore_files()
> > >
> > Which is what we actually do, right?
>
> OK, I have a really evil one.
>
> What if task 1234 does:
>
> open(O_RDONLY, "/proc/5678/fdinfo/44");
>
> and task 5678 does:
>
> open(O_RDONLY, "/proc/5678/fdinfo/55");
Nice one. Let's make fdinfo files uncheckpointable for now :)
-serge
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