12694 race between write() and shutdown() for unix sockets

*** 22,31 ****
--- 22,32 ----
  /*      All Rights Reserved     */
  
  
  /*
   * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright 2020 Joyent, Inc.
   */
  
  #ifndef _SYS_TIHDR_H
  #define _SYS_TIHDR_H
  
*** 178,225 ****
  #define T_EXTCONN_IND   0x1003  /* extended T_CONN_IND to return dst as well */
  
  #endif /* _KERNEL */
  
  /*
-  * The following are the events that drive the state machine
-  */
- /* Initialization events */
- #define TE_BIND_REQ     0       /* bind request                         */
- #define TE_UNBIND_REQ   1       /* unbind request                       */
- #define TE_OPTMGMT_REQ  2       /* manage options req                   */
- #define TE_BIND_ACK     3       /* bind acknowledment                   */
- #define TE_OPTMGMT_ACK  4       /* manage options ack                   */
- #define TE_ERROR_ACK    5       /* error acknowledgment                 */
- #define TE_OK_ACK1      6       /* ok ack  seqcnt == 0                  */
- #define TE_OK_ACK2      7       /* ok ack  seqcnt == 1, q == resq       */
- #define TE_OK_ACK3      8       /* ok ack  seqcnt == 1, q != resq       */
- #define TE_OK_ACK4      9       /* ok ack  seqcnt > 1                   */
- 
- /* Connection oriented events */
- #define TE_CONN_REQ     10      /* connection request                   */
- #define TE_CONN_RES     11      /* connection response                  */
- #define TE_DISCON_REQ   12      /* disconnect request                   */
- #define TE_DATA_REQ     13      /* data request                         */
- #define TE_EXDATA_REQ   14      /* expedited data request               */
- #define TE_ORDREL_REQ   15      /* orderly release req                  */
- #define TE_CONN_IND     16      /* connection indication                */
- #define TE_CONN_CON     17      /* connection confirmation              */
- #define TE_DATA_IND     18      /* data indication                      */
- #define TE_EXDATA_IND   19      /* expedited data indication            */
- #define TE_ORDREL_IND   20      /* orderly release ind                  */
- #define TE_DISCON_IND1  21      /* disconnect indication seq == 0       */
- #define TE_DISCON_IND2  22      /* disconnect indication seq == 1       */
- #define TE_DISCON_IND3  23      /* disconnect indication seq > 1        */
- #define TE_PASS_CONN    24      /* pass connection                      */
- 
- /* Unit data events */
- #define TE_UNITDATA_REQ 25      /* unitdata request                     */
- #define TE_UNITDATA_IND 26      /* unitdata indication                  */
- #define TE_UDERROR_IND  27      /* unitdata error indication            */
- 
- #define TE_NOEVENTS     28
- /*
   * The following are the possible states of the Transport
   * Service Interface
   */
  
  #define TS_UNBND                0       /* unbound                      */
--- 179,188 ----