/* * 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. */ #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); }