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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 1993-2003 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 32 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.4 */ 33 34 /* 35 * t_sndrel.c and t_sndreldata.c are very similar and contain common code. 36 * Any changes to either of them should be reviewed to see whether they 37 * are applicable to the other file. 38 */ 39 #include "mt.h" 40 #include <rpc/trace.h> 41 #include <errno.h> 42 #include <stropts.h> 43 #include <sys/stream.h> 44 #define _SUN_TPI_VERSION 2 45 #include <sys/tihdr.h> 46 #include <sys/timod.h> 47 #include <xti.h> 48 #include "tx.h" 49 50 int 51 _tx_sndrel(int fd, int api_semantics) 52 { 53 struct T_ordrel_req orreq; 54 struct strbuf ctlbuf; 55 struct _ti_user *tiptr; 56 int sv_errno; 57 58 trace2(TR_t_sndrel, 0, fd); 59 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL) { 60 sv_errno = errno; 61 trace2(TR_t_sndrel, 1, fd); 62 errno = sv_errno; 63 return (-1); 64 } 65 sig_mutex_lock(&tiptr->ti_lock); 66 67 if (tiptr->ti_servtype != T_COTS_ORD) { 68 t_errno = TNOTSUPPORT; 69 sig_mutex_unlock(&tiptr->ti_lock); 70 trace2(TR_t_sndrel, 1, fd); 71 return (-1); 72 } 73 74 if (_T_IS_XTI(api_semantics)) { 75 /* 76 * User level state verification only done for XTI 77 * because doing for TLI may break existing applications 78 */ 79 if (! (tiptr->ti_state == T_DATAXFER || 80 tiptr->ti_state == T_INREL)) { 81 t_errno = TOUTSTATE; 82 sig_mutex_unlock(&tiptr->ti_lock); 83 trace2(TR_t_sndrel, 1, fd); 84 return (-1); 85 } 86 87 if (_t_look_locked(fd, tiptr, 0, 88 api_semantics) == T_DISCONNECT) { 89 t_errno = TLOOK; 90 sig_mutex_unlock(&tiptr->ti_lock); 91 trace2(TR_t_sndrel, 1, fd); 92 return (-1); 93 } 94 95 } 96 97 orreq.PRIM_type = T_ORDREL_REQ; 98 ctlbuf.maxlen = (int)sizeof (struct T_ordrel_req); 99 ctlbuf.len = (int)sizeof (struct T_ordrel_req); 100 ctlbuf.buf = (caddr_t)&orreq; 101 102 /* 103 * Calls to send data (write or putmsg) can potentially 104 * block, for MT case, we drop the lock and enable signals here 105 * and acquire it back 106 */ 107 sig_mutex_unlock(&tiptr->ti_lock); 108 if (putmsg(fd, &ctlbuf, NULL, 0) < 0) { 109 sv_errno = errno; 110 111 if (errno == EAGAIN) 112 t_errno = TFLOW; 113 else 114 t_errno = TSYSERR; 115 trace2(TR_t_sndrel, 1, fd); 116 errno = sv_errno; 117 return (-1); 118 } 119 sig_mutex_lock(&tiptr->ti_lock); 120 _T_TX_NEXTSTATE(T_SNDREL, tiptr, 121 "t_sndrel: invalid state on event T_SNDREL"); 122 sig_mutex_unlock(&tiptr->ti_lock); 123 trace2(TR_t_sndrel, 1, fd); 124 return (0); 125 } 126