1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
24/*	  All Rights Reserved  	*/
25
26/*
27 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
28 * Use is subject to license terms.
29 */
30
31#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.5 */
32
33#include "mt.h"
34#include <stdlib.h>
35#include <string.h>
36#include <strings.h>
37#include <unistd.h>
38#include <errno.h>
39#include <stropts.h>
40#include <sys/stream.h>
41#define	_SUN_TPI_VERSION 2
42#include <sys/tihdr.h>
43#include <sys/timod.h>
44#include <sys/stat.h>
45#include <xti.h>
46#include <fcntl.h>
47#include <signal.h>
48#include <assert.h>
49#include <syslog.h>
50#include <limits.h>
51#include "tx.h"
52
53int
54_tx_getinfo(int fd, struct t_info *info, int api_semantics)
55{
56	struct T_info_req *inforeqp;
57	struct T_info_ack *infoackp;
58	int retlen;
59	struct _ti_user *tiptr;
60	int retval, sv_errno, didalloc;
61	struct strbuf ctlbuf;
62
63	if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == 0)
64		return (-1);
65	sig_mutex_lock(&tiptr->ti_lock);
66
67	/*
68	 * Acquire buffer for use in sending/receiving the message.
69	 * Note: assumes (correctly) that ti_ctlsize is large enough
70	 * to hold sizeof (struct T_info_req/ack)
71	 */
72	if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) {
73		sv_errno = errno;
74		sig_mutex_unlock(&tiptr->ti_lock);
75		errno = sv_errno;
76		return (-1);
77	}
78
79	/* LINTED pointer cast */
80	inforeqp =  (struct T_info_req *)ctlbuf.buf;
81	inforeqp->PRIM_type = T_INFO_REQ;
82
83	do {
84		retval = _t_do_ioctl(fd, ctlbuf.buf,
85			(int)sizeof (struct T_info_req), TI_GETINFO, &retlen);
86	} while (retval < 0 && errno == EINTR);
87
88	if (retval < 0)
89		goto err_out;
90
91	if (retlen != (int)sizeof (struct T_info_ack)) {
92		t_errno = TSYSERR;
93		errno = EIO;
94		goto err_out;
95	}
96
97	/* LINTED pointer cast */
98	infoackp = (struct T_info_ack *)ctlbuf.buf;
99
100	info->addr = infoackp->ADDR_size;
101	info->options = infoackp->OPT_size;
102	info->tsdu = infoackp->TSDU_size;
103	info->etsdu = infoackp->ETSDU_size;
104	info->connect = infoackp->CDATA_size;
105	info->discon = infoackp->DDATA_size;
106	info->servtype = infoackp->SERV_type;
107
108	if (_T_IS_XTI(api_semantics)) {
109		/* XTI ONLY - TLI t_info struct does not have "flags" */
110		info->flags = 0;
111		if (infoackp->PROVIDER_flag & (SENDZERO|OLD_SENDZERO))
112			info->flags |= T_SENDZERO;
113	}
114	if (didalloc)
115		free(ctlbuf.buf);
116	else
117		tiptr->ti_ctlbuf = ctlbuf.buf;
118	sig_mutex_unlock(&tiptr->ti_lock);
119	return (0);
120
121err_out:
122	sv_errno = errno;
123	if (didalloc)
124		free(ctlbuf.buf);
125	else
126		tiptr->ti_ctlbuf = ctlbuf.buf;
127	sig_mutex_unlock(&tiptr->ti_lock);
128	errno = sv_errno;
129	return (-1);
130}
131