1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "%Z%%M% %I% %E% SMI" 29 30 /* 31 * t_sndrel.c and t_sndreldata.c are very similar and contain common code. 32 * Any changes to either of them should be reviewed to see whether they 33 * are applicable to the other file. 34 */ 35 #include "mt.h" 36 #include <errno.h> 37 #include <stropts.h> 38 #include <sys/stream.h> 39 #define _SUN_TPI_VERSION 2 40 #include <sys/tihdr.h> 41 #include <sys/timod.h> 42 #include <xti.h> 43 #include <assert.h> 44 #include "tx.h" 45 46 int 47 _tx_sndreldata(int fd, struct t_discon *discon, int api_semantics) 48 { 49 struct T_ordrel_req orreq; 50 struct strbuf ctlbuf; 51 struct _ti_user *tiptr; 52 53 assert(api_semantics == TX_XTI_XNS5_API); 54 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL) 55 return (-1); 56 sig_mutex_lock(&tiptr->ti_lock); 57 58 if (tiptr->ti_servtype != T_COTS_ORD) { 59 t_errno = TNOTSUPPORT; 60 sig_mutex_unlock(&tiptr->ti_lock); 61 return (-1); 62 } 63 64 if (!(tiptr->ti_state == T_DATAXFER || 65 tiptr->ti_state == T_INREL)) { 66 t_errno = TOUTSTATE; 67 sig_mutex_unlock(&tiptr->ti_lock); 68 return (-1); 69 } 70 71 if (_t_look_locked(fd, tiptr, 0, 72 api_semantics) == T_DISCONNECT) { 73 t_errno = TLOOK; 74 sig_mutex_unlock(&tiptr->ti_lock); 75 return (-1); 76 } 77 78 /* 79 * Someday there could be transport providers that support T_ORDRELDATA 80 * Until that happens, this function returns TBADDATA if user data 81 * was specified. If no user data is specified, this function 82 * behaves as t_sndrel() 83 * Note: Currently only mOSI ("minimal OSI") provider is specified 84 * to use T_ORDRELDATA so probability of needing it is minimal. 85 */ 86 87 if (discon && discon->udata.len) { 88 t_errno = TBADDATA; 89 sig_mutex_unlock(&tiptr->ti_lock); 90 return (-1); 91 } 92 93 orreq.PRIM_type = T_ORDREL_REQ; 94 ctlbuf.maxlen = (int)sizeof (struct T_ordrel_req); 95 ctlbuf.len = (int)sizeof (struct T_ordrel_req); 96 ctlbuf.buf = (caddr_t)&orreq; 97 98 /* 99 * Calls to send data (write or putmsg) can potentially 100 * block, for MT case, we drop the lock and enable signals here 101 * and acquire it back 102 */ 103 sig_mutex_unlock(&tiptr->ti_lock); 104 if (putmsg(fd, &ctlbuf, NULL, 0) < 0) { 105 if (errno == EAGAIN) 106 t_errno = TFLOW; 107 else 108 t_errno = TSYSERR; 109 return (-1); 110 } 111 sig_mutex_lock(&tiptr->ti_lock); 112 _T_TX_NEXTSTATE(T_SNDREL, tiptr, 113 "t_sndreldata: invalid state on event T_SNDREL"); 114 sig_mutex_unlock(&tiptr->ti_lock); 115 return (0); 116 } 117