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/*
* 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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.7 */
#include "mt.h"
#include <stropts.h>
#include <stdlib.h>
#include <sys/timod.h>
#define _SUN_TPI_VERSION 2
#include <sys/tihdr.h>
#include <xti.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>
#include <syslog.h>
#include "tx.h"
/*
* If a system call fails with EINTR after T_CONN_REQ is sent out,
* we change state for caller to continue with t_rcvconnect(). This
* semantics is not documented for TLI but is the direction taken with
* XTI so we adopt it. With this the call establishment is completed
* by calling t_rcvconnect() even for synchronous endpoints.
*/
int
_tx_connect(
int fd,
const struct t_call *sndcall,
struct t_call *rcvcall,
int api_semantics
)
{
int fctlflg;
struct _ti_user *tiptr;
sigset_t mask;
struct strbuf ctlbuf;
int sv_errno;
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_IDLE) {
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);
}
/*
* Block all signals until T_CONN_REQ sent and
* acked with T_OK_ACK/ERROR_ACK
*/
(void) thr_sigsetmask(SIG_SETMASK, &fillset, &mask);
if (_t_snd_conn_req(tiptr, sndcall, &ctlbuf) < 0) {
sv_errno = errno;
(void) thr_sigsetmask(SIG_SETMASK, &mask, NULL);
errno = sv_errno;
/*
* At the TPI level, the error returned in a T_ERROR_ACK
* received in response to a T_CONN_REQ for an attempt to
* establish a duplicate conection has changed to a
* new t_errno code introduced with XTI (ADDRBUSY).
* We need to adjust TLI error code to be same as before.
*/
if (_T_IS_TLI(api_semantics) && t_errno == TADDRBUSY)
/* TLI only */
t_errno = TBADADDR;
goto err_out;
}
(void) thr_sigsetmask(SIG_SETMASK, &mask, NULL);
if ((fctlflg = fcntl(fd, F_GETFL, 0)) < 0) {
t_errno = TSYSERR;
goto err_out;
}
if (fctlflg & (O_NDELAY | O_NONBLOCK)) {
_T_TX_NEXTSTATE(T_CONNECT2, tiptr,
"t_connect: invalid state event T_CONNECT2");
t_errno = TNODATA;
goto err_out;
}
/*
* Note: The following call to _t_rcv_conn_con blocks awaiting
* T_CONN_CON from remote client. Therefore it drops the
* tiptr->lock during the call (and reacquires it)
*/
if (_t_rcv_conn_con(tiptr, rcvcall, &ctlbuf, api_semantics) < 0) {
if ((t_errno == TSYSERR && errno == EINTR) ||
t_errno == TLOOK) {
_T_TX_NEXTSTATE(T_CONNECT2, tiptr,
"t_connect: invalid state event T_CONNECT2");
} else if (t_errno == TBUFOVFLW) {
_T_TX_NEXTSTATE(T_CONNECT1, tiptr,
"t_connect: invalid state event T_CONNECT1");
}
goto err_out;
}
_T_TX_NEXTSTATE(T_CONNECT1, tiptr,
"t_connect: invalid state event T_CONNECT1");
/*
* 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)
goto err_out;
}
if (didalloc)
free(ctlbuf.buf);
else
tiptr->ti_ctlbuf = ctlbuf.buf;
sig_mutex_unlock(&tiptr->ti_lock);
return (0);
err_out:
sv_errno = errno;
if (didalloc)
free(ctlbuf.buf);
else
tiptr->ti_ctlbuf = ctlbuf.buf;
sig_mutex_unlock(&tiptr->ti_lock);
errno = sv_errno;
return (-1);
}
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