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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 1.3.4.1 */
#include "mt.h"
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <sys/stropts.h>
#include <sys/stream.h>
#define _SUN_TPI_VERSION 2
#include <sys/tihdr.h>
#include <sys/timod.h>
#include <xti.h>
#include <signal.h>
#include <syslog.h>
#include "tx.h"
int
_tx_unbind(int fd, int api_semantics)
{
struct _ti_user *tiptr;
sigset_t mask;
int sv_errno, retval, didalloc;
struct strbuf ctlbuf;
if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL)
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;
return (-1);
}
}
/*
* Since unbind is not an idempotent operation, we
* block signals around the call.
* Note that sig_mutex_lock() only defers signals, it does not
* block them, so interruptible syscalls could still get EINTR.
*/
(void) thr_sigsetmask(SIG_SETMASK, &fillset, &mask);
sig_mutex_lock(&tiptr->ti_lock);
/*
* Acquire buffer for use in sending/receiving the message.
* Note: assumes (correctly) that ti_ctlsize is large enough
* to hold sizeof (struct T_unbind_req/ack)
*/
if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
sv_errno = errno;
sig_mutex_unlock(&tiptr->ti_lock);
(void) thr_sigsetmask(SIG_SETMASK, &mask, NULL);
errno = sv_errno;
return (-1);
}
retval = _tx_unbind_locked(fd, tiptr, &ctlbuf);
sv_errno = errno;
if (didalloc)
free(ctlbuf.buf);
else
tiptr->ti_ctlbuf = ctlbuf.buf;
sig_mutex_unlock(&tiptr->ti_lock);
(void) thr_sigsetmask(SIG_SETMASK, &mask, NULL);
errno = sv_errno;
return (retval);
}
int
_tx_unbind_locked(int fd, struct _ti_user *tiptr, struct strbuf *ctlbufp)
{
struct T_unbind_req *unbind_reqp;
int retlen;
if (_t_is_event(fd, tiptr) < 0)
return (-1);
/* LINTED pointer cast */
unbind_reqp = (struct T_unbind_req *)ctlbufp->buf;
unbind_reqp->PRIM_type = T_UNBIND_REQ;
if (_t_do_ioctl(fd, (char *)unbind_reqp,
(int)sizeof (struct T_unbind_req), TI_UNBIND, &retlen) < 0) {
goto err_out;
}
if (ioctl(fd, I_FLUSH, FLUSHRW) < 0) {
t_errno = TSYSERR;
goto err_out;
}
/*
* clear more and expedited data bits
*/
tiptr->ti_flags &= ~(MORE|EXPEDITED);
_T_TX_NEXTSTATE(T_UNBIND, tiptr,
"t_unbind: invalid state event T_UNBIND");
return (0);
err_out:
return (-1);
}
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