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 27 #include <arpa/inet.h> 28 #include <net/if.h> 29 30 #include <err.h> 31 #include <errno.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <libifconfig.h> 36 37 38 int 39 main(int argc, char *argv[]) 40 { 41 char *ifname, *ifdescr, *curdescr; 42 ifconfig_handle_t *lifh; 43 44 if (argc != 3) { 45 errx(EINVAL, "Invalid number of arguments." 46 " First argument should be interface name, second argument" 47 " should be the description to set."); 48 } 49 50 /* We have a static number of arguments. Therefore we can do it simple. */ 51 ifname = strdup(argv[1]); 52 ifdescr = strdup(argv[2]); 53 curdescr = NULL; 54 55 printf("Interface name: %s\n", ifname); 56 57 lifh = ifconfig_open(); 58 if (lifh == NULL) { 59 errx(ENOMEM, "Failed to open libifconfig handle."); 60 return (-1); 61 } 62 63 if (ifconfig_get_description(lifh, ifname, &curdescr) == 0) { 64 printf("Old description: %s\n", curdescr); 65 } 66 67 printf("New description: %s\n\n", ifdescr); 68 69 if (ifconfig_set_description(lifh, ifname, ifdescr) == 0) { 70 printf("New description successfully set.\n"); 71 } else { 72 switch (ifconfig_err_errtype(lifh)) { 73 case SOCKET: 74 err(ifconfig_err_errno(lifh), "Socket error"); 75 break; 76 case IOCTL: 77 err(ifconfig_err_errno( 78 lifh), "IOCTL(%lu) error", 79 ifconfig_err_ioctlreq(lifh)); 80 break; 81 default: 82 err(ifconfig_err_errno(lifh), "Other error"); 83 break; 84 } 85 } 86 87 free(ifname); 88 free(ifdescr); 89 free(curdescr); 90 ifname = NULL; 91 ifdescr = NULL; 92 curdescr = NULL; 93 94 ifconfig_close(lifh); 95 return (0); 96 } 97