Ok--I may have found the problem (easy)--I had assumed self->path was
always non-NULL.
Thanks anyway!!
Janice
Janice Chang wrote:
> Hello. I would like to ask for some help on a dtrace script I am writing.
>
> The following set of dtrace functions seems not to work....I see output
> for the entry function as expected, but I do not see a corresponding
> return value being returned. Actually the return function was more
> complicated but it was not working. When I decided to simply test using
> a return value I realized that that did not work either.
>
> When I remove the predicate from the entry function, I see output for
> every entry (including those with the "SUNW..." string), but only return
> values for the calls whose args[2] do not correspond to the "SUNW" string.
>
> Using an entry predicate where args[2] corresponds to a more standard
> name seems to fare better.
>
> I am not sure if the problem is the '$' or if it might be something else.
>
> Thank you very much for your help.
>
> Janice
>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> fbt::zap_lookup_norm:entry
> / args[2] == "SUNWsmb:stream4.txt:$DATA" /
> {
> self->path = args[7];
> printf("zap_lookup_norm entry: %s\n", stringof(args[2]));
> }
>
> fbt::zap_lookup_norm:return
> /self->path/
> {
> trace(arg1);
> }
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> _______________________________________________
> dtrace-discuss mailing list
> [email protected]
>
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