1 /*- 2 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB 3 * 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 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 */ 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <fcntl.h> 32 #include <sys/ioctl.h> 33 34 /* 35 * From the driver itself 36 */ 37 #include <plugins/visibility_ioctl.h> 38 39 static int dev = -1; 40 41 static void 42 toggle_medium(int op) 43 { 44 if (ioctl(dev, VISIOCTLOPEN, &op) < 0) { 45 printf("error opening/closing medium\n"); 46 } 47 } 48 49 static void 50 link_op(struct link *l) 51 { 52 if (ioctl(dev, VISIOCTLLINK, l) < 0) { 53 printf("error making a link operation\n"); 54 } 55 } 56 57 static void 58 usage(const char *argv[]) 59 { 60 printf("usage: %s [o | c | [ [a|d] wtap_id1 wtap_id2]]\n", 61 argv[0]); 62 } 63 64 int 65 main(int argc, const char* argv[]) 66 { 67 struct link l; 68 char cmd; 69 70 if (argc < 2) { 71 usage(argv); 72 exit(1); 73 } 74 75 dev = open("/dev/visctl", O_RDONLY); 76 if (dev < 0) { 77 printf("error opening visctl cdev\n"); 78 exit(1); 79 } 80 81 cmd = (char)*argv[1]; 82 83 switch (cmd) { 84 case 'o': 85 toggle_medium(1); 86 break; 87 case 'c': 88 toggle_medium(0); 89 break; 90 case 'a': 91 if (argc < 4) { 92 usage(argv); 93 exit(1); 94 } 95 l.op = 1; 96 l.id1 = atoi(argv[2]); 97 l.id2 = atoi(argv[3]); 98 link_op(&l); 99 break; 100 case 'd': 101 if (argc < 4) { 102 usage(argv); 103 exit(1); 104 } 105 l.op = 0; 106 l.id1 = atoi(argv[2]); 107 l.id2 = atoi(argv[3]); 108 link_op(&l); 109 break; 110 default: 111 printf("wtap ioctl: unknown command '%c'\n", *argv[1]); 112 exit(1); 113 } 114 exit(0); 115 } 116