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Re: [PATCH] S390: Sync ptrace.h with kernel. [BZ #21539]

On Tue, Jun 06, 2017 at 12:44:04PM +0200, Andreas Schwab wrote:
> On Jun 06 2017, Stefan Liebler <stli@linux.vnet.ibm.com> wrote:
[...]
> > +static void
> > +tracer_func (int pid)
> > +{
> > +  unsigned long last_break;
> > +  ptrace_area parea;
> > +  gregset_t regs;
> > +  int status;
> > +
> > +  while (1)
> > +    {
> > +      /* Wait for the tracee to be stopped or exited.  */
> > +      wait (&status);
> 
> Doesn't that need to use WUNTRACED?

No, it doesn't: as the tracee has called PTRACE_TRACEME before raising
SIGSTOP, there is going to be a ptrace signal delivery stop.


-- 
ldv

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