[PATCH] Add dynamic linker support for $EXEC_ORIGIN.

[Rich Felker]

On Mon, Dec 09, 2013 at 04:25:19PM -0800, Paul Pluzhnikov wrote:
> On Mon, Dec 9, 2013 at 4:12 PM, Brooks Moses <bmoses@google.com> wrote:
> 
> > +/* Iterate over auxv, find AT_EXECFN if any.  */
> > +static char *
> > +get_at_execfn (ElfW(auxv_t) *auxv)
> > +{
> > +  assert (auxv != NULL);
> > +
> > +  for (; auxv->a_type != AT_NULL; ++auxv)
> > +    if (auxv->a_type == AT_EXECFN)
> > +      return (char *) auxv->a_un.a_val;
> > +
> > +  return NULL;
> > +}
> 
> get_at_execfn can be replaced with getauxval (AT_EXECFN)
> 
> (getauxval() didn't exist in 2.15, but is there now).

Before getauxval enters widespread use, can somebody please review bug
#15846 regarding the interface being broken?

Rich