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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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */
/*
* t_sndudata.c and t_sndvudata.c are very similar and contain common code.
* Any changes to either of them should be reviewed to see whether they
* are applicable to the other file.
*/
#include "mt.h"
#include <stdlib.h>
#include <errno.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 "tx.h"
int
_tx_sndudata(int fd, const struct t_unitdata *unitdata, int api_semantics)
{
struct T_unitdata_req *udreq;
struct strbuf ctlbuf;
int size;
struct _ti_user *tiptr;
int sv_errno;
int didalloc;
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);
}
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);
}
}
if (((int)unitdata->udata.len == 0) &&
!(tiptr->ti_prov_flag & (SENDZERO|OLD_SENDZERO))) {
t_errno = TBADDATA;
sig_mutex_unlock(&tiptr->ti_lock);
return (-1);
}
if ((tiptr->ti_maxpsz > 0) &&
(unitdata->udata.len > (uint32_t)tiptr->ti_maxpsz)) {
if (_T_IS_TLI(api_semantics)) {
t_errno = TSYSERR;
errno = EPROTO;
} else
t_errno = TBADDATA;
sv_errno = errno;
sig_mutex_unlock(&tiptr->ti_lock);
errno = sv_errno;
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);
}
/* LINTED pointer cast */
udreq = (struct T_unitdata_req *)ctlbuf.buf;
udreq->PRIM_type = T_UNITDATA_REQ;
udreq->DEST_length = unitdata->addr.len;
udreq->DEST_offset = 0;
udreq->OPT_length = unitdata->opt.len;
udreq->OPT_offset = 0;
size = (int)sizeof (struct T_unitdata_req);
if (unitdata->addr.len) {
if (_t_aligned_copy(&ctlbuf, unitdata->addr.len, size,
unitdata->addr.buf, &udreq->DEST_offset) < 0) {
/*
* Aligned copy based will overflow buffer
* allocated based on maximum transport address
* size information
*/
t_errno = TSYSERR;
errno = EPROTO;
goto err_out;
}
size = udreq->DEST_offset + udreq->DEST_length;
}
if (unitdata->opt.len) {
if (_t_aligned_copy(&ctlbuf, unitdata->opt.len, size,
unitdata->opt.buf, &udreq->OPT_offset) < 0) {
/*
* Aligned copy based will overflow buffer
* allocated based on maximum transport option
* size information
*/
t_errno = TSYSERR;
errno = EPROTO;
goto err_out;
}
size = udreq->OPT_offset + udreq->OPT_length;
}
if (size > (int)ctlbuf.maxlen) {
t_errno = TSYSERR;
errno = EIO;
goto err_out;
}
ctlbuf.len = size;
/*
* Calls to send data (write or putmsg) can potentially
* block, for MT case, we drop the lock and enable signals here
* and acquire it back.
* At this point, we are sure SENDZERO is supported and the
* putmsg below may send a zero length message,
* (i.e with valid control part, but zero data part)
*/
sig_mutex_unlock(&tiptr->ti_lock);
if (putmsg(fd, &ctlbuf, (struct strbuf *)&unitdata->udata, 0) < 0) {
if (errno == EAGAIN)
t_errno = TFLOW;
else
t_errno = TSYSERR;
sv_errno = errno;
sig_mutex_lock(&tiptr->ti_lock);
errno = sv_errno;
goto err_out;
}
sig_mutex_lock(&tiptr->ti_lock);
_T_TX_NEXTSTATE(T_SNDUDATA, tiptr,
"t_sndudata: invalid state event T_SNDUDATA");
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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