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 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30/*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40#pragma ident	"%Z%%M%	%I%	%E% SMI"
41
42/*
43 * Kernel TLI-like function to get the state of an
44 * endpoint.
45 *
46 * Returns:
47 * 	0 on success and "state" is set to the current state,
48 * 	or a positive error code.
49 */
50
51#include <sys/param.h>
52#include <sys/types.h>
53#include <sys/proc.h>
54#include <sys/file.h>
55#include <sys/user.h>
56#include <sys/vnode.h>
57#include <sys/errno.h>
58#include <sys/stream.h>
59#include <sys/ioctl.h>
60#include <sys/stropts.h>
61#include <sys/strsubr.h>
62#include <sys/tihdr.h>
63#include <sys/timod.h>
64#include <sys/tiuser.h>
65#include <sys/t_kuser.h>
66
67
68int
69t_kgetstate(TIUSER *tiptr, int *state)
70{
71	struct T_info_ack	inforeq;
72	struct strioctl		strioc;
73	int 			retval;
74	vnode_t 		*vp;
75	file_t			*fp;
76	int			error;
77
78	error = 0;
79	retval = 0;
80	fp = tiptr->fp;
81	vp = fp->f_vnode;
82
83	if (state == NULL)
84		return (EINVAL);
85
86	inforeq.PRIM_type = T_INFO_REQ;
87	strioc.ic_cmd = TI_GETINFO;
88	strioc.ic_timout = 0;
89	strioc.ic_dp = (char *)&inforeq;
90	strioc.ic_len = (int)sizeof (struct T_info_req);
91
92	error = strdoioctl(vp->v_stream, &strioc, FNATIVE, K_TO_K, CRED(),
93	    &retval);
94	if (error)
95		return (error);
96
97	if (retval) {
98		if ((retval & 0xff) == TSYSERR)
99			error = (retval >> 8) & 0xff;
100		else
101			error = t_tlitosyserr(retval & 0xff);
102		return (error);
103	}
104
105	if (strioc.ic_len != sizeof (struct T_info_ack))
106		return (EPROTO);
107
108	switch (inforeq.CURRENT_state) {
109	case TS_UNBND:
110		*state = T_UNBND;
111		break;
112
113	case TS_IDLE:
114		*state = T_IDLE;
115		break;
116
117	case TS_WRES_CIND:
118		*state = T_INCON;
119		break;
120
121	case TS_WCON_CREQ:
122		*state = T_OUTCON;
123		break;
124
125	case TS_DATA_XFER:
126		*state = T_DATAXFER;
127		break;
128
129	case TS_WIND_ORDREL:
130		*state = T_OUTREL;
131		break;
132
133	case TS_WREQ_ORDREL:
134		*state = T_INREL;
135		break;
136
137	default:
138		error = EPROTO;
139		break;
140	}
141	return (error);
142}
143