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*/ 66 int 67 t_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