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 1997 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 * Free the specified kernel tli data structure.
44 *
45 * Returns:
46 * 	0 on success or
47 * 	positive error code.
48 */
49
50#include <sys/param.h>
51#include <sys/types.h>
52#include <sys/user.h>
53#include <sys/stream.h>
54#include <sys/ioctl.h>
55#include <sys/file.h>
56#include <sys/stropts.h>
57#include <sys/tihdr.h>
58#include <sys/timod.h>
59#include <sys/tiuser.h>
60#include <sys/errno.h>
61#include <sys/t_kuser.h>
62#include <sys/kmem.h>
63
64
65/*ARGSUSED*/
66int
67t_kfree(TIUSER *tiptr, char *ptr, int struct_type)
68{
69	union structptrs {
70		struct t_bind		*bind;
71		struct t_call		*call;
72		struct t_discon		*dis;
73		struct t_optmgmt	*opt;
74		struct t_kunitdata	*udata;
75		struct t_uderr		*uderr;
76	} p;
77	int error = 0;
78
79	/*
80	 * Free all the buffers associated with the appropriate
81	 * fields of each structure.
82	 */
83
84	switch (struct_type) {
85	case T_BIND:
86		/* LINTED pointer alignment */
87		p.bind = (struct t_bind *)ptr;
88		if (p.bind->addr.buf != NULL)
89			kmem_free(p.bind->addr.buf, p.bind->addr.maxlen);
90		kmem_free(ptr, sizeof (struct t_bind));
91		break;
92
93	case T_CALL:
94		/* LINTED pointer alignment */
95		p.call = (struct t_call *)ptr;
96		if (p.call->addr.buf != NULL)
97			kmem_free(p.call->addr.buf, p.call->addr.maxlen);
98		if (p.call->opt.buf != NULL)
99			kmem_free(p.call->opt.buf, p.call->opt.maxlen);
100		if (p.call->udata.buf != NULL)
101			kmem_free(p.call->udata.buf, p.call->udata.maxlen);
102		kmem_free(ptr, sizeof (struct t_call));
103		break;
104
105	case T_OPTMGMT:
106		/* LINTED pointer alignment */
107		p.opt = (struct t_optmgmt *)ptr;
108		if (p.opt->opt.buf != NULL)
109			kmem_free(p.opt->opt.buf, p.opt->opt.maxlen);
110		kmem_free(ptr, sizeof (struct t_optmgmt));
111		break;
112
113	case T_DIS:
114		/* LINTED pointer alignment */
115		p.dis = (struct t_discon *)ptr;
116		if (p.dis->udata.buf != NULL)
117			kmem_free(p.dis->udata.buf, p.dis->udata.maxlen);
118		kmem_free(ptr, sizeof (struct t_discon));
119		break;
120
121	case T_UNITDATA:
122		/* LINTED pointer alignment */
123		p.udata = (struct t_kunitdata *)ptr;
124
125		if (p.udata->udata.udata_mp) {
126			KTLILOG(2, "t_kfree: freeing mblk_t %x, ",
127			    p.udata->udata.udata_mp);
128			KTLILOG(2, "ref %d\n",
129			    p.udata->udata.udata_mp->b_datap->db_ref);
130			freemsg(p.udata->udata.udata_mp);
131		}
132		if (p.udata->opt.buf != NULL)
133			kmem_free(p.udata->opt.buf, p.udata->opt.maxlen);
134		if (p.udata->addr.buf != NULL) {
135			KTLILOG(2, "t_kfree: freeing address %x, ",
136			    p.udata->addr.buf);
137			KTLILOG(2, "len %d\n", p.udata->addr.maxlen);
138			kmem_free(p.udata->addr.buf, p.udata->addr.maxlen);
139		}
140		KTLILOG(2, "t_kfree: freeing t_kunitdata\n", 0);
141		kmem_free(ptr, sizeof (struct t_kunitdata));
142		break;
143
144	case T_UDERROR:
145		/* LINTED pointer alignment */
146		p.uderr = (struct t_uderr *)ptr;
147		if (p.uderr->addr.buf != NULL)
148			kmem_free(p.uderr->addr.buf, p.uderr->addr.maxlen);
149		if (p.uderr->opt.buf != NULL)
150			kmem_free(p.uderr->opt.buf, p.uderr->opt.maxlen);
151		kmem_free(ptr, sizeof (struct t_uderr));
152		break;
153
154	case T_INFO:
155		break;
156
157	default:
158		error = EINVAL;
159		break;
160	}
161
162	return (error);
163}
164