1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char rcsid[] = 32 "$FreeBSD$"; 33 #endif /* not lint */ 34 35 #include <sys/types.h> 36 #include <sys/ioctl.h> 37 #include <sys/socket.h> 38 #include <net/if.h> 39 40 #include <err.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <ifaddrs.h> 45 46 #include <net/if_dl.h> 47 #include <net/if_types.h> 48 #include <net/ethernet.h> 49 50 #include "ifconfig.h" 51 52 static struct ifreq link_ridreq; 53 54 static void 55 link_status(int s __unused, const struct ifaddrs *ifa) 56 { 57 /* XXX no const 'cuz LLADDR is defined wrong */ 58 struct sockaddr_dl *sdl = (struct sockaddr_dl *) ifa->ifa_addr; 59 60 if (sdl != NULL && sdl->sdl_alen > 0) { 61 if (sdl->sdl_type == IFT_ETHER && 62 sdl->sdl_alen == ETHER_ADDR_LEN) 63 printf("\tether %s\n", 64 ether_ntoa((struct ether_addr *)LLADDR(sdl))); 65 else { 66 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0; 67 68 printf("\tlladdr %s\n", link_ntoa(sdl) + n); 69 } 70 } 71 } 72 73 static void 74 link_getaddr(const char *addr, int which) 75 { 76 char *temp; 77 struct sockaddr_dl sdl; 78 struct sockaddr *sa = &link_ridreq.ifr_addr; 79 80 if (which != ADDR) 81 errx(1, "can't set link-level netmask or broadcast"); 82 if ((temp = malloc(strlen(addr) + 2)) == NULL) 83 errx(1, "malloc failed"); 84 temp[0] = ':'; 85 strcpy(temp + 1, addr); 86 sdl.sdl_len = sizeof(sdl); 87 link_addr(temp, &sdl); 88 free(temp); 89 if (sdl.sdl_alen > sizeof(sa->sa_data)) 90 errx(1, "malformed link-level address"); 91 sa->sa_family = AF_LINK; 92 sa->sa_len = sdl.sdl_alen; 93 bcopy(LLADDR(&sdl), sa->sa_data, sdl.sdl_alen); 94 } 95 96 static struct afswtch af_link = { 97 .af_name = "link", 98 .af_af = AF_LINK, 99 .af_status = link_status, 100 .af_getaddr = link_getaddr, 101 .af_aifaddr = SIOCSIFLLADDR, 102 .af_addreq = &link_ridreq, 103 }; 104 static struct afswtch af_ether = { 105 .af_name = "ether", 106 .af_af = AF_LINK, 107 .af_status = link_status, 108 .af_getaddr = link_getaddr, 109 .af_aifaddr = SIOCSIFLLADDR, 110 .af_addreq = &link_ridreq, 111 }; 112 static struct afswtch af_lladdr = { 113 .af_name = "lladdr", 114 .af_af = AF_LINK, 115 .af_status = link_status, 116 .af_getaddr = link_getaddr, 117 .af_aifaddr = SIOCSIFLLADDR, 118 .af_addreq = &link_ridreq, 119 }; 120 121 static __constructor void 122 link_ctor(void) 123 { 124 af_register(&af_link); 125 af_register(&af_ether); 126 af_register(&af_lladdr); 127 } 128