1 /* 2 * Copyright (c) 2016, 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 * 3. Neither the name of the copyright holder nor the names of its contributors 16 * may be used to endorse or promote products derived from this software without 17 * specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #include <err.h> 34 #include <errno.h> 35 #include <net/if.h> 36 #include <sys/ioctl.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <libifconfig.h> 41 42 43 int main(int argc, char *argv[]) 44 { 45 if (argc != 2) { 46 errx(EINVAL, "Invalid number of arguments." 47 " Only one argument is accepted, and it should be the name" 48 " of the interface to be created."); 49 } 50 51 char *ifname, *ifactualname; 52 53 /* We have a static number of arguments. Therefore we can do it simple. */ 54 ifname = strdup(argv[1]); 55 56 printf("Requested interface name: %s\n", ifname); 57 58 ifconfig_handle_t *lifh = ifconfig_open(); 59 if (ifconfig_create_interface(lifh, ifname, &ifactualname) == 0) { 60 printf("Successfully created interface '%s'\n", ifactualname); 61 ifconfig_close(lifh); 62 lifh = NULL; 63 free(ifname); 64 free(ifactualname); 65 return (0); 66 } else { 67 switch (ifconfig_err_errtype(lifh)) { 68 case SOCKET: 69 warnx("couldn't create socket. This shouldn't happen.\n"); 70 break; 71 case IOCTL: 72 if (ifconfig_err_ioctlreq(lifh) == SIOCIFCREATE2) { 73 warnx( 74 "Failed to create interface (SIOCIFCREATE2)\n"); 75 } 76 break; 77 default: 78 warnx( 79 "This is a thorough example accommodating for temporary" 80 " 'not implemented yet' errors. That's likely what happened" 81 " now. If not, your guess is as good as mine. ;)" 82 " Error code: %d\n", ifconfig_err_errno( 83 lifh)); 84 break; 85 } 86 87 ifconfig_close(lifh); 88 lifh = NULL; 89 free(ifname); 90 free(ifactualname); 91 return (-1); 92 } 93 } 94