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 /* 41 * Free the specified kernel tli data structure. 42 * 43 * Returns: 44 * 0 on success or 45 * positive error code. 46 */ 47 48 #include <sys/param.h> 49 #include <sys/types.h> 50 #include <sys/user.h> 51 #include <sys/stream.h> 52 #include <sys/ioctl.h> 53 #include <sys/file.h> 54 #include <sys/stropts.h> 55 #include <sys/tihdr.h> 56 #include <sys/timod.h> 57 #include <sys/tiuser.h> 58 #include <sys/errno.h> 59 #include <sys/t_kuser.h> 60 #include <sys/kmem.h> 61 62 63 /*ARGSUSED*/ 64 int 65 t_kfree(TIUSER *tiptr, char *ptr, int struct_type) 66 { 67 union structptrs { 68 struct t_bind *bind; 69 struct t_call *call; 70 struct t_discon *dis; 71 struct t_optmgmt *opt; 72 struct t_kunitdata *udata; 73 struct t_uderr *uderr; 74 } p; 75 int error = 0; 76 77 /* 78 * Free all the buffers associated with the appropriate 79 * fields of each structure. 80 */ 81 82 switch (struct_type) { 83 case T_BIND: 84 /* LINTED pointer alignment */ 85 p.bind = (struct t_bind *)ptr; 86 if (p.bind->addr.buf != NULL) 87 kmem_free(p.bind->addr.buf, p.bind->addr.maxlen); 88 kmem_free(ptr, sizeof (struct t_bind)); 89 break; 90 91 case T_CALL: 92 /* LINTED pointer alignment */ 93 p.call = (struct t_call *)ptr; 94 if (p.call->addr.buf != NULL) 95 kmem_free(p.call->addr.buf, p.call->addr.maxlen); 96 if (p.call->opt.buf != NULL) 97 kmem_free(p.call->opt.buf, p.call->opt.maxlen); 98 if (p.call->udata.buf != NULL) 99 kmem_free(p.call->udata.buf, p.call->udata.maxlen); 100 kmem_free(ptr, sizeof (struct t_call)); 101 break; 102 103 case T_OPTMGMT: 104 /* LINTED pointer alignment */ 105 p.opt = (struct t_optmgmt *)ptr; 106 if (p.opt->opt.buf != NULL) 107 kmem_free(p.opt->opt.buf, p.opt->opt.maxlen); 108 kmem_free(ptr, sizeof (struct t_optmgmt)); 109 break; 110 111 case T_DIS: 112 /* LINTED pointer alignment */ 113 p.dis = (struct t_discon *)ptr; 114 if (p.dis->udata.buf != NULL) 115 kmem_free(p.dis->udata.buf, p.dis->udata.maxlen); 116 kmem_free(ptr, sizeof (struct t_discon)); 117 break; 118 119 case T_UNITDATA: 120 /* LINTED pointer alignment */ 121 p.udata = (struct t_kunitdata *)ptr; 122 123 if (p.udata->udata.udata_mp) { 124 KTLILOG(2, "t_kfree: freeing mblk_t %x, ", 125 p.udata->udata.udata_mp); 126 KTLILOG(2, "ref %d\n", 127 p.udata->udata.udata_mp->b_datap->db_ref); 128 freemsg(p.udata->udata.udata_mp); 129 } 130 if (p.udata->opt.buf != NULL) 131 kmem_free(p.udata->opt.buf, p.udata->opt.maxlen); 132 if (p.udata->addr.buf != NULL) { 133 KTLILOG(2, "t_kfree: freeing address %x, ", 134 p.udata->addr.buf); 135 KTLILOG(2, "len %d\n", p.udata->addr.maxlen); 136 kmem_free(p.udata->addr.buf, p.udata->addr.maxlen); 137 } 138 KTLILOG(2, "t_kfree: freeing t_kunitdata\n", 0); 139 kmem_free(ptr, sizeof (struct t_kunitdata)); 140 break; 141 142 case T_UDERROR: 143 /* LINTED pointer alignment */ 144 p.uderr = (struct t_uderr *)ptr; 145 if (p.uderr->addr.buf != NULL) 146 kmem_free(p.uderr->addr.buf, p.uderr->addr.maxlen); 147 if (p.uderr->opt.buf != NULL) 148 kmem_free(p.uderr->opt.buf, p.uderr->opt.maxlen); 149 kmem_free(ptr, sizeof (struct t_uderr)); 150 break; 151 152 case T_INFO: 153 break; 154 155 default: 156 error = EINVAL; 157 break; 158 } 159 160 return (error); 161 } 162