tnf_datum_t
tnf_get_tag_arg(tnf_datum_t datum)
{
TNF *tnf;
tnf_ref32_t *arg;
CHECK_RECORD(datum);
tnf = DATUM_TNF(datum);
/* Should not give an error if not found */
/* LINTED pointer cast may result in improper alignment */
arg = _tnf_get_tag_arg(tnf, DATUM_RECORD(datum));
if (arg == TNF_NULL)
return (TNF_DATUM_NULL);
else /* repackage the tag arg with its taginfo */
return (RECORD_DATUM(tnf, arg));
}
static tnf_datum_t
get_slot(tnf_datum_t datum, struct slot *slot)
{
if (slot == NULL) {
_tnf_error(DATUM_TNF(datum), TNF_ERR_BADSLOT); /* XXX */
return (TNF_DATUM_NULL);
} else if (INFO_TAGGED(slot->slot_type)) {
TNF *tnf;
tnf_ref32_t *rec;
tnf = DATUM_TNF(datum);
/* LINTED pointer cast may result in improper alignment */
rec = _GET_REF32(tnf, (tnf_ref32_t *)
(DATUM_VAL(datum) + slot->slot_offset));
/* NULL slots are allowed */
return ((rec == TNF_NULL)? TNF_DATUM_NULL :
RECORD_DATUM(tnf, rec));
} else /* inline */
return DATUM(slot->slot_type,
DATUM_VAL(datum) + slot->slot_offset);
}
