1 /* $NetBSD: if_media.c,v 1.2 2008/04/28 20:23:03 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #if defined(LIBC_SCCS) && !defined(lint) 35 __RCSID("$NetBSD: if_media.c,v 1.2 2008/04/28 20:23:03 martin Exp $"); 36 #endif 37 38 #include <stdio.h> 39 #include <string.h> 40 #include <stdlib.h> 41 #include <sys/types.h> 42 #include <net/if_media.h> 43 44 struct ifmedia_description ifm_mode_descriptions[] = 45 IFM_MODE_DESCRIPTIONS; 46 47 struct ifmedia_description ifm_type_descriptions[] = 48 IFM_TYPE_DESCRIPTIONS; 49 50 struct ifmedia_description ifm_subtype_descriptions[] = 51 IFM_SUBTYPE_DESCRIPTIONS; 52 53 struct ifmedia_description ifm_option_descriptions[] = 54 IFM_OPTION_DESCRIPTIONS; 55 56 const char * 57 get_media_type_string(int mword) 58 { 59 struct ifmedia_description *desc; 60 61 for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++) { 62 if (IFM_TYPE(mword) == desc->ifmt_word) 63 return (desc->ifmt_string); 64 } 65 return "<unknown type>"; 66 } 67 68 const char * 69 get_media_subtype_string(int mword) 70 { 71 struct ifmedia_description *desc; 72 73 for (desc = ifm_subtype_descriptions; desc->ifmt_string != NULL; 74 desc++) { 75 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) && 76 IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(mword)) 77 return desc->ifmt_string; 78 } 79 return "<unknown subtype>"; 80 } 81 82 const char * 83 get_media_mode_string(int mword) 84 { 85 struct ifmedia_description *desc; 86 87 for (desc = ifm_mode_descriptions; desc->ifmt_string != NULL; desc++) { 88 if (IFM_TYPE_MATCH(desc->ifmt_word, mword) && 89 IFM_MODE(mword) == IFM_MODE(desc->ifmt_word)) 90 return desc->ifmt_string; 91 } 92 return NULL; 93 } 94 95 const char * 96 get_media_option_string(int *mwordp) 97 { 98 struct ifmedia_description *desc; 99 int mword = *mwordp; 100 101 for (desc = ifm_option_descriptions; desc->ifmt_string != NULL; 102 desc++) { 103 if (!IFM_TYPE_MATCH(desc->ifmt_word, mword)) 104 continue; 105 if (mword & IFM_OPTIONS(desc->ifmt_word)) { 106 *mwordp = mword & ~IFM_OPTIONS(desc->ifmt_word); 107 return desc->ifmt_string; 108 } 109 } 110 111 /* Historical behaviour is to ignore unknown option bits! */ 112 *mwordp = mword & ~IFM_OPTIONS(~0); 113 return NULL; 114 } 115 116 int 117 lookup_media_word(struct ifmedia_description *desc, int type, const char *val) 118 { 119 120 for (; desc->ifmt_string != NULL; desc++) { 121 if (IFM_TYPE_MATCH(desc->ifmt_word, type) && 122 strcasecmp(desc->ifmt_string, val) == 0) 123 return (desc->ifmt_word); 124 } 125 return -1; 126 } 127 128 int 129 get_media_mode(int type, const char *val) 130 { 131 132 return lookup_media_word(ifm_mode_descriptions, type, val); 133 } 134 135 int 136 get_media_subtype(int type, const char *val) 137 { 138 139 return lookup_media_word(ifm_subtype_descriptions, type, val); 140 } 141 142 int 143 get_media_options(int type, const char *val, char **invalid) 144 { 145 char *optlist, *str; 146 int option, rval = 0; 147 148 /* We muck with the string, so copy it. */ 149 optlist = strdup(val); 150 if (optlist == NULL) { 151 if (invalid != NULL) 152 *invalid = NULL; 153 return -1; 154 } 155 str = optlist; 156 157 /* 158 * Look up the options in the user-provided comma-separated list. 159 */ 160 type = IFM_TYPE(type); 161 for (; (str = strtok(str, ",")) != NULL; str = NULL) { 162 option = lookup_media_word(ifm_option_descriptions, type, str); 163 if (option != -1) { 164 rval |= IFM_OPTIONS(option); 165 continue; 166 } 167 rval = -1; 168 if (invalid == NULL) 169 break; 170 /* Pass invalid option at start of malloced buffer */ 171 if (str != optlist) 172 memmove(optlist, str, strlen(str) + 1); 173 /* Caller should free() or exit() */ 174 *invalid = optlist; 175 return rval; 176 } 177 178 free(optlist); 179 return (rval); 180 } 181