ses_present
static int ses_present(topo_mod_t *, tnode_t *, topo_version_t, nvlist_t *,
TOPO_METH_PRESENT_VERSION0, TOPO_STABILITY_INTERNAL, ses_present },
ssc->ses_present = SES_CLOSED;
if (ssc->ses_present < SES_OPEN) {
ssc->ses_present = SES_OPEN;
ssc->ses_present = SES_OPEN;
ssc->ses_present = (ssc->ses_present)? ssc->ses_present: SES_OPENING;
ssc->ses_present == SES_CLOSED) {
uchar_t ses_present; /* device present */
_NOTE(SCHEME_PROTECTS_DATA("not shared", ses_softc::ses_present))