7711 SMF: Finish implementing support for degraded state

*** 1167,1177 ****
          if (info->sf_method_type == METHOD_START)
                  log_transition(inst, START_REQUESTED);
  
          r = method_run(&inst, info->sf_method_type, &exit_code);
  
!         if (r == 0 && exit_code == 0) {
                  /* Success! */
                  assert(inst->ri_i.i_next_state != RESTARTER_STATE_NONE);
  
                  /*
                   * When a stop method succeeds, remove the primary contract of
--- 1167,1177 ----
          if (info->sf_method_type == METHOD_START)
                  log_transition(inst, START_REQUESTED);
  
          r = method_run(&inst, info->sf_method_type, &exit_code);
  
!         if (r == 0 && (exit_code == 0 || exit_code == SMF_EXIT_MON_DEGRADE)) {
                  /* Success! */
                  assert(inst->ri_i.i_next_state != RESTARTER_STATE_NONE);
  
                  /*
                   * When a stop method succeeds, remove the primary contract of
*** 1185,1195 ****
--- 1185,1206 ----
                          if (inst->ri_i.i_next_state == RESTARTER_STATE_OFFLINE)
                                  inst->ri_i.i_primary_ctid_stopped = 1;
                          else
                                  method_remove_contract(inst, B_TRUE, B_TRUE);
                  }
+ 
                  /*
+                  * When a start method returns with SMF_EXIT_MON_DEGRADE we
+                  * transition the service into degraded.
+                  */
+                 if (info->sf_method_type == METHOD_START &&
+                     exit_code == SMF_EXIT_MON_DEGRADE) {
+                         inst->ri_i.i_next_state = RESTARTER_STATE_DEGRADED;
+                         info->sf_reason = restarter_str_method_failed;
+                 }
+ 
+                 /*
                   * We don't care whether the handle was rebound because this is
                   * the last thing we do with it.
                   */
                  (void) restarter_instance_update_states(local_handle, inst,
                      inst->ri_i.i_next_state, RESTARTER_STATE_NONE,