xref: /titanic_41/usr/src/uts/common/ktli/t_kgtstate.c (revision ee5416c9d7e449233197d5d20bc6b81e4ff091b2)
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  
68  int
69  t_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