1 /* 2 * Copyright (c) 2016-2017, Marie Helene Kvello-Aune 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * thislist of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation and/or 13 * other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <arpa/inet.h> 30 #include <net/if.h> 31 32 #include <err.h> 33 #include <errno.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <libifconfig.h> 38 39 40 int 41 main(int argc, char *argv[]) 42 { 43 char *ifname, *ifdescr, *curdescr; 44 ifconfig_handle_t *lifh; 45 46 if (argc != 3) { 47 errx(EINVAL, "Invalid number of arguments." 48 " First argument should be interface name, second argument" 49 " should be the description to set."); 50 } 51 52 /* We have a static number of arguments. Therefore we can do it simple. */ 53 ifname = strdup(argv[1]); 54 ifdescr = strdup(argv[2]); 55 curdescr = NULL; 56 57 printf("Interface name: %s\n", ifname); 58 59 lifh = ifconfig_open(); 60 if (lifh == NULL) { 61 errx(ENOMEM, "Failed to open libifconfig handle."); 62 return (-1); 63 } 64 65 if (ifconfig_get_description(lifh, ifname, &curdescr) == 0) { 66 printf("Old description: %s\n", curdescr); 67 } 68 69 printf("New description: %s\n\n", ifdescr); 70 71 if (ifconfig_set_description(lifh, ifname, ifdescr) == 0) { 72 printf("New description successfully set.\n"); 73 } else { 74 switch (ifconfig_err_errtype(lifh)) { 75 case SOCKET: 76 err(ifconfig_err_errno(lifh), "Socket error"); 77 break; 78 case IOCTL: 79 err(ifconfig_err_errno( 80 lifh), "IOCTL(%lu) error", 81 ifconfig_err_ioctlreq(lifh)); 82 break; 83 default: 84 err(ifconfig_err_errno(lifh), "Other error"); 85 break; 86 } 87 } 88 89 free(ifname); 90 free(ifdescr); 91 free(curdescr); 92 ifname = NULL; 93 ifdescr = NULL; 94 curdescr = NULL; 95 96 ifconfig_close(lifh); 97 return (0); 98 } 99