/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include "mt.h"
#include <stdlib.h>
#include <errno.h>
#include <stropts.h>
#include <xti.h>
#include <sys/timod.h>
#include "tx.h"


/*
 * t_rcvconnect() is documented to be only called with non-blocking
 * endpoints for asynchronous connection establishment. However, the
 * direction taken by XTI is to allow it to be called if t_connect()
 * fails with TSYSERR/EINTR and state is T_OUTCON (i.e. T_CONN_REQ was
 * sent down). This implies that an interrupted synchronous connection
 * establishment which was interrupted after connection request was transmitted
 * can now be completed by calling t_rcvconnect()
 */
int
_tx_rcvconnect(int fd, struct t_call *call, int api_semantics)
{
        struct _ti_user *tiptr;
        int retval, sv_errno;
        struct strbuf ctlbuf;
        int didalloc;

        if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL)
                return (-1);

        sig_mutex_lock(&tiptr->ti_lock);

        if (_T_IS_XTI(api_semantics)) {
                /*
                 * User level state verification only done for XTI
                 * because doing for TLI may break existing applications
                 */
                if (tiptr->ti_state != T_OUTCON) {
                        t_errno = TOUTSTATE;
                        sig_mutex_unlock(&tiptr->ti_lock);
                        return (-1);
                }
        }

        /*
         * Acquire ctlbuf for use in sending/receiving control part
         * of the message.
         */
        if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
                sv_errno = errno;
                sig_mutex_unlock(&tiptr->ti_lock);
                errno = sv_errno;
                return (-1);
        }

        retval = _t_rcv_conn_con(tiptr, call, &ctlbuf, api_semantics);
        if (retval == 0 || t_errno == TBUFOVFLW) {
                _T_TX_NEXTSTATE(T_RCVCONNECT, tiptr,
                        "t_rcvconnect: Invalid state on event T_RCVCONNECT");
                /*
                 * Update attributes which may have been negotiated during
                 * connection establishment for protocols where we suspect
                 * such negotiation is likely (e.g. OSI). We do not do it for
                 * all endpoints for performance reasons. Also, this code is
                 * deliberately done after user level state changes so even
                 * the (unlikely) failure case reflects a connected endpoint.
                 */
                if (tiptr->ti_tsdusize != 0)
                        if (_t_do_postconn_sync(fd, tiptr) < 0)
                                retval = -1;
        }
        sv_errno = errno;
        if (didalloc)
                free(ctlbuf.buf);
        else
                tiptr->ti_ctlbuf = ctlbuf.buf;
        sig_mutex_unlock(&tiptr->ti_lock);
        errno = sv_errno;
        return (retval);
}