/*
* 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 1.5 */
#include "mt.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stropts.h>
#include <sys/stream.h>
#define _SUN_TPI_VERSION 2
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <xti.h>
#include <syslog.h>
#include <assert.h>
#include "tx.h"
int
_tx_rcvuderr(int fd, struct t_uderr *uderr, int api_semantics)
{
struct strbuf ctlbuf, databuf;
int flg;
int retval;
union T_primitives *pptr;
struct _ti_user *tiptr;
int sv_errno;
int didalloc;
int use_lookbufs = 0;
if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL)
return (-1);
sig_mutex_lock(&tiptr->ti_lock);
if (tiptr->ti_servtype != T_CLTS) {
t_errno = TNOTSUPPORT;
sig_mutex_unlock(&tiptr->ti_lock);
return (-1);
}
/*
* is there a unitdata error indication in look buffer
*/
if (tiptr->ti_lookcnt > 0) {
ctlbuf.len = tiptr->ti_lookbufs.tl_lookclen;
ctlbuf.buf = tiptr->ti_lookbufs.tl_lookcbuf;
/* Note: cltbuf.maxlen not used in this case */
/* LINTED pointer cast */
assert(((union T_primitives *)ctlbuf.buf)->type
== T_UDERROR_IND);
databuf.maxlen = 0;
databuf.len = 0;
databuf.buf = NULL;
use_lookbufs = 1;
} else {
if ((retval = _t_look_locked(fd, tiptr, 0,
api_semantics)) < 0) {
sv_errno = errno;
sig_mutex_unlock(&tiptr->ti_lock);
errno = sv_errno;
return (-1);
}
if (retval != T_UDERR) {
t_errno = TNOUDERR;
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);
}
databuf.maxlen = 0;
databuf.len = 0;
databuf.buf = NULL;
flg = 0;
/*
* Since we already verified that a unitdata error
* indication is pending, we assume that this getmsg()
* will not block indefinitely.
*/
if ((retval = getmsg(fd, &ctlbuf, &databuf, &flg)) < 0) {
t_errno = TSYSERR;
goto err_out;
}
/*
* did I get entire message?
*/
if (retval > 0) {
t_errno = TSYSERR;
errno = EIO;
goto err_out;
}
}
/* LINTED pointer cast */
pptr = (union T_primitives *)ctlbuf.buf;
if ((ctlbuf.len < (int)sizeof (struct T_uderror_ind)) ||
(pptr->type != T_UDERROR_IND)) {
t_errno = TSYSERR;
errno = EPROTO;
goto err_out;
}
if (uderr) {
if (_T_IS_TLI(api_semantics) || uderr->addr.maxlen > 0) {
if (TLEN_GT_NLEN(pptr->uderror_ind.DEST_length,
uderr->addr.maxlen)) {
t_errno = TBUFOVFLW;
goto err_out;
}
(void) memcpy(uderr->addr.buf, ctlbuf.buf +
pptr->uderror_ind.DEST_offset,
(size_t)pptr->uderror_ind.DEST_length);
uderr->addr.len =
(unsigned int)pptr->uderror_ind.DEST_length;
}
if (_T_IS_TLI(api_semantics) || uderr->addr.maxlen > 0) {
if (TLEN_GT_NLEN(pptr->uderror_ind.OPT_length,
uderr->opt.maxlen)) {
t_errno = TBUFOVFLW;
goto err_out;
}
(void) memcpy(uderr->opt.buf, ctlbuf.buf +
pptr->uderror_ind.OPT_offset,
(size_t)pptr->uderror_ind.OPT_length);
uderr->opt.len =
(unsigned int)pptr->uderror_ind.OPT_length;
}
uderr->error = pptr->uderror_ind.ERROR_type;
}
_T_TX_NEXTSTATE(T_RCVUDERR, tiptr,
"t_rcvuderr: invalid state event T_RCVUDERR");
if (use_lookbufs)
_t_free_looklist_head(tiptr);
else {
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 (use_lookbufs)
_t_free_looklist_head(tiptr);
else {
if (didalloc)
free(ctlbuf.buf);
else
tiptr->ti_ctlbuf = ctlbuf.buf;
}
sig_mutex_unlock(&tiptr->ti_lock);
errno = sv_errno;
return (-1);
}