2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License, Version 1.0 only
2N/A * (the "License"). You may not use this file except in compliance
2N/A * with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A/*
2N/A * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */
2N/A
2N/A#include "mt.h"
2N/A#include <errno.h>
2N/A#include <string.h>
2N/A#include <stdlib.h>
2N/A#include <stropts.h>
2N/A#include <sys/stream.h>
2N/A#define _SUN_TPI_VERSION 2
2N/A#include <sys/tihdr.h>
2N/A#include <sys/timod.h>
2N/A#include <xti.h>
2N/A#include <syslog.h>
2N/A#include <assert.h>
2N/A#include "tx.h"
2N/A
2N/Aint
2N/A_tx_rcvuderr(int fd, struct t_uderr *uderr, int api_semantics)
2N/A{
2N/A struct strbuf ctlbuf, databuf;
2N/A int flg;
2N/A int retval;
2N/A union T_primitives *pptr;
2N/A struct _ti_user *tiptr;
2N/A int sv_errno;
2N/A int didalloc;
2N/A int use_lookbufs = 0;
2N/A
2N/A
2N/A if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL)
2N/A return (-1);
2N/A sig_mutex_lock(&tiptr->ti_lock);
2N/A
2N/A if (tiptr->ti_servtype != T_CLTS) {
2N/A t_errno = TNOTSUPPORT;
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A return (-1);
2N/A }
2N/A /*
2N/A * is there a unitdata error indication in look buffer
2N/A */
2N/A if (tiptr->ti_lookcnt > 0) {
2N/A ctlbuf.len = tiptr->ti_lookbufs.tl_lookclen;
2N/A ctlbuf.buf = tiptr->ti_lookbufs.tl_lookcbuf;
2N/A /* Note: cltbuf.maxlen not used in this case */
2N/A
2N/A /* LINTED pointer cast */
2N/A assert(((union T_primitives *)ctlbuf.buf)->type
2N/A == T_UDERROR_IND);
2N/A
2N/A databuf.maxlen = 0;
2N/A databuf.len = 0;
2N/A databuf.buf = NULL;
2N/A
2N/A use_lookbufs = 1;
2N/A
2N/A } else {
2N/A if ((retval = _t_look_locked(fd, tiptr, 0,
2N/A api_semantics)) < 0) {
2N/A sv_errno = errno;
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A errno = sv_errno;
2N/A return (-1);
2N/A }
2N/A if (retval != T_UDERR) {
2N/A t_errno = TNOUDERR;
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A return (-1);
2N/A }
2N/A
2N/A /*
2N/A * Acquire ctlbuf for use in sending/receiving control part
2N/A * of the message.
2N/A */
2N/A if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
2N/A sv_errno = errno;
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A errno = sv_errno;
2N/A return (-1);
2N/A }
2N/A
2N/A databuf.maxlen = 0;
2N/A databuf.len = 0;
2N/A databuf.buf = NULL;
2N/A
2N/A flg = 0;
2N/A
2N/A /*
2N/A * Since we already verified that a unitdata error
2N/A * indication is pending, we assume that this getmsg()
2N/A * will not block indefinitely.
2N/A */
2N/A if ((retval = getmsg(fd, &ctlbuf, &databuf, &flg)) < 0) {
2N/A
2N/A t_errno = TSYSERR;
2N/A goto err_out;
2N/A }
2N/A /*
2N/A * did I get entire message?
2N/A */
2N/A if (retval > 0) {
2N/A t_errno = TSYSERR;
2N/A errno = EIO;
2N/A goto err_out;
2N/A }
2N/A
2N/A }
2N/A
2N/A /* LINTED pointer cast */
2N/A pptr = (union T_primitives *)ctlbuf.buf;
2N/A
2N/A if ((ctlbuf.len < (int)sizeof (struct T_uderror_ind)) ||
2N/A (pptr->type != T_UDERROR_IND)) {
2N/A t_errno = TSYSERR;
2N/A errno = EPROTO;
2N/A goto err_out;
2N/A }
2N/A
2N/A if (uderr) {
2N/A if (_T_IS_TLI(api_semantics) || uderr->addr.maxlen > 0) {
2N/A if (TLEN_GT_NLEN(pptr->uderror_ind.DEST_length,
2N/A uderr->addr.maxlen)) {
2N/A t_errno = TBUFOVFLW;
2N/A goto err_out;
2N/A }
2N/A (void) memcpy(uderr->addr.buf, ctlbuf.buf +
2N/A pptr->uderror_ind.DEST_offset,
2N/A (size_t)pptr->uderror_ind.DEST_length);
2N/A uderr->addr.len =
2N/A (unsigned int)pptr->uderror_ind.DEST_length;
2N/A }
2N/A if (_T_IS_TLI(api_semantics) || uderr->addr.maxlen > 0) {
2N/A if (TLEN_GT_NLEN(pptr->uderror_ind.OPT_length,
2N/A uderr->opt.maxlen)) {
2N/A t_errno = TBUFOVFLW;
2N/A goto err_out;
2N/A }
2N/A (void) memcpy(uderr->opt.buf, ctlbuf.buf +
2N/A pptr->uderror_ind.OPT_offset,
2N/A (size_t)pptr->uderror_ind.OPT_length);
2N/A uderr->opt.len =
2N/A (unsigned int)pptr->uderror_ind.OPT_length;
2N/A }
2N/A uderr->error = pptr->uderror_ind.ERROR_type;
2N/A }
2N/A
2N/A _T_TX_NEXTSTATE(T_RCVUDERR, tiptr,
2N/A "t_rcvuderr: invalid state event T_RCVUDERR");
2N/A if (use_lookbufs)
2N/A _t_free_looklist_head(tiptr);
2N/A else {
2N/A if (didalloc)
2N/A free(ctlbuf.buf);
2N/A else
2N/A tiptr->ti_ctlbuf = ctlbuf.buf;
2N/A }
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A return (0);
2N/A
2N/Aerr_out:
2N/A sv_errno = errno;
2N/A
2N/A if (use_lookbufs)
2N/A _t_free_looklist_head(tiptr);
2N/A else {
2N/A if (didalloc)
2N/A free(ctlbuf.buf);
2N/A else
2N/A tiptr->ti_ctlbuf = ctlbuf.buf;
2N/A }
2N/A sig_mutex_unlock(&tiptr->ti_lock);
2N/A errno = sv_errno;
2N/A return (-1);
2N/A}