Re: Global constants

[Martin Hunt <hunt@redhat.com>]

On Mon, 2006-02-13 at 20:44 +0000, Mark McLoughlin wrote:
> On Mon, 2006-02-13 at 12:23 -0800, Martin Hunt wrote:
> > On Mon, 2006-02-13 at 20:14 +0000, Mark McLoughlin wrote:
> > 
> > > > something like
> > > > %{ const_O_CREAT = O_CREAT; %}
> > > >   instead of
> > > > O_CREAT = 64
> > > 
> > > 	Absolutely, that was my first thought too ... unfortunately, the kernel
> > > headers don't seem to have all the values e.g. O_ASYNC is only available
> > > as FASYNC ... I didn't take it any further than thinking "uggh, that
> > > sucks", though :-)
> > 
> > I don't understand.
> > 
> > function get_o_creat:long() %{ THIS->__retvalue = O_CREAT; %}
> > 
> > probe begin {
> > 	printf("O_CREAT = %d\n", get_o_creat())
> > }
> > 
> > > stap -g creat.stp
> > O_CREAT = 64
> 
> 	O_CREAT works fine, but try O_ASYNC (AFAIR)

Yeah, a quirk of the kernel headers is that they define FASYNC instead
of the equivalent O_ASYNC. The user headers define both 
# define FASYNC            O_ASYNC

Martin