OS-2834 ship lx brand

*** 445,454 ****
--- 445,466 ----
          ptms_close(ptmp, PTMOPEN | PTLOCK);
  
          return (0);
  }
  
+ static boolean_t
+ ptmptsopencb(ptmptsopencb_arg_t arg)
+ {
+         struct pt_ttys  *ptmp = (struct pt_ttys *)arg;
+         boolean_t rval;
+ 
+         PT_ENTER_READ(ptmp);
+         rval = (ptmp->pt_nullmsg != NULL);
+         PT_EXIT_READ(ptmp);
+         return (rval);
+ }
+ 
  /*
   * The wput procedure will only handle ioctl and flush messages.
   */
  static void
  ptmwput(queue_t *qp, mblk_t *mp)
*** 572,581 ****
--- 584,628 ----
                          ptmp->pt_rgid = ptop->pto_rgid;
                          mutex_exit(&ptmp->pt_lock);
                          miocack(qp, mp, 0, 0);
                          break;
                  }
+                 case PTMPTSOPENCB:
+                 {
+                         mblk_t          *dp;    /* ioctl reply data */
+                         ptmptsopencb_t  *ppocb;
+ 
+                         /* only allow the kernel to invoke this ioctl */
+                         if (iocp->ioc_cr != kcred) {
+                                 miocnak(qp, mp, 0, EINVAL);
+                                 break;
+                         }
+ 
+                         /* we don't support transparent ioctls */
+                         ASSERT(iocp->ioc_count != TRANSPARENT);
+                         if (iocp->ioc_count == TRANSPARENT) {
+                                 miocnak(qp, mp, 0, EINVAL);
+                                 break;
+                         }
+ 
+                         /* allocate a response message */
+                         dp = allocb(sizeof (ptmptsopencb_t), BPRI_MED);
+                         if (dp == NULL) {
+                                 miocnak(qp, mp, 0, EAGAIN);
+                                 break;
+                         }
+ 
+                         /* initialize the ioctl results */
+                         ppocb = (ptmptsopencb_t *)dp->b_rptr;
+                         ppocb->ppocb_func = ptmptsopencb;
+                         ppocb->ppocb_arg = (ptmptsopencb_arg_t)ptmp;
+ 
+                         /* send the reply data */
+                         mioc2ack(mp, dp, sizeof (ptmptsopencb_t), 0);
+                         qreply(qp, mp);
+                         break;
+                 }
                  }
                  break;
  
          case M_READ:
                  /* Caused by ldterm - can not pass to slave */