libscsi_action_get_buffer
if (libscsi_action_get_buffer(action, NULL, NULL, &nwritten) != 0) {
extern int libscsi_action_get_buffer(const libscsi_action_t *,
(void) libscsi_action_get_buffer(ap, NULL, NULL, &len);
(void) libscsi_action_get_buffer(ap, &buf, &alloc, &pp->ssp_len);
if (libscsi_action_get_buffer(ap,