xref: /freebsd/tools/tools/wtap/vis_map/vis_map.c (revision 42249ef2)
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  * $FreeBSD$
30  */
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <fcntl.h>
34 #include <sys/ioctl.h>
35 
36 /*
37  * From the driver itself
38  */
39 #include <plugins/visibility_ioctl.h>
40 
41 static int dev = -1;
42 
43 static void
44 toggle_medium(int op)
45 {
46 	if (ioctl(dev, VISIOCTLOPEN, &op) < 0) {
47 		printf("error opening/closing medium\n");
48 	}
49 }
50 
51 static void
52 link_op(struct link *l)
53 {
54 	if (ioctl(dev, VISIOCTLLINK, l) < 0) {
55 		printf("error making a link operation\n");
56 	}
57 }
58 
59 static void
60 usage(const char *argv[])
61 {
62 	printf("usage: %s [o | c | [ [a|d]  wtap_id1  wtap_id2]]\n",
63 	    argv[0]);
64 }
65 
66 int
67 main(int argc, const char* argv[])
68 {
69 	struct link l;
70 	char cmd;
71 
72 	if (argc < 2) {
73 		usage(argv);
74 		exit(1);
75 	}
76 
77 	dev = open("/dev/visctl", O_RDONLY);
78 		if (dev < 0) {
79 			printf("error opening visctl cdev\n");
80 			exit(1);
81 	}
82 
83 	cmd = (char)*argv[1];
84 
85 	switch (cmd) {
86 	case 'o':
87 		toggle_medium(1);
88 		break;
89 	case 'c':
90 		toggle_medium(0);
91 		break;
92 	case 'a':
93 		if (argc < 4) {
94 			usage(argv);
95 			exit(1);
96 		}
97 		l.op = 1;
98 		l.id1 = atoi(argv[2]);
99 		l.id2 = atoi(argv[3]);
100 		link_op(&l);
101 		break;
102 	case 'd':
103 		if (argc < 4) {
104 			usage(argv);
105 			exit(1);
106 		}
107 		l.op = 0;
108 		l.id1 = atoi(argv[2]);
109 		l.id2 = atoi(argv[3]);
110 		link_op(&l);
111 		break;
112 	default:
113 		printf("wtap ioctl: unknown command '%c'\n", *argv[1]);
114 		exit(1);
115 	}
116 	exit(0);
117 }
118