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 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
24 /* All Rights Reserved */
25
26 /*
27 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 #include "mt.h"
32 #include <stdlib.h>
33 #include <errno.h>
34 #include <stropts.h>
35 #include <xti.h>
36 #include <sys/timod.h>
37 #include "tx.h"
38
39
40 /*
41 * t_rcvconnect() is documented to be only called with non-blocking
42 * endpoints for asynchronous connection establishment. However, the
43 * direction taken by XTI is to allow it to be called if t_connect()
44 * fails with TSYSERR/EINTR and state is T_OUTCON (i.e. T_CONN_REQ was
45 * sent down). This implies that an interrupted synchronous connection
46 * establishment which was interrupted after connection request was transmitted
47 * can now be completed by calling t_rcvconnect()
48 */
49 int
_tx_rcvconnect(int fd,struct t_call * call,int api_semantics)50 _tx_rcvconnect(int fd, struct t_call *call, int api_semantics)
51 {
52 struct _ti_user *tiptr;
53 int retval, sv_errno;
54 struct strbuf ctlbuf;
55 int didalloc;
56
57 if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL)
58 return (-1);
59
60 sig_mutex_lock(&tiptr->ti_lock);
61
62 if (_T_IS_XTI(api_semantics)) {
63 /*
64 * User level state verification only done for XTI
65 * because doing for TLI may break existing applications
66 */
67 if (tiptr->ti_state != T_OUTCON) {
68 t_errno = TOUTSTATE;
69 sig_mutex_unlock(&tiptr->ti_lock);
70 return (-1);
71 }
72 }
73
74 /*
75 * Acquire ctlbuf for use in sending/receiving control part
76 * of the message.
77 */
78 if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
79 sv_errno = errno;
80 sig_mutex_unlock(&tiptr->ti_lock);
81 errno = sv_errno;
82 return (-1);
83 }
84
85 retval = _t_rcv_conn_con(tiptr, call, &ctlbuf, api_semantics);
86 if (retval == 0 || t_errno == TBUFOVFLW) {
87 _T_TX_NEXTSTATE(T_RCVCONNECT, tiptr,
88 "t_rcvconnect: Invalid state on event T_RCVCONNECT");
89 /*
90 * Update attributes which may have been negotiated during
91 * connection establishment for protocols where we suspect
92 * such negotiation is likely (e.g. OSI). We do not do it for
93 * all endpoints for performance reasons. Also, this code is
94 * deliberately done after user level state changes so even
95 * the (unlikely) failure case reflects a connected endpoint.
96 */
97 if (tiptr->ti_tsdusize != 0)
98 if (_t_do_postconn_sync(fd, tiptr) < 0)
99 retval = -1;
100 }
101 sv_errno = errno;
102 if (didalloc)
103 free(ctlbuf.buf);
104 else
105 tiptr->ti_ctlbuf = ctlbuf.buf;
106 sig_mutex_unlock(&tiptr->ti_lock);
107 errno = sv_errno;
108 return (retval);
109 }
110