1
2/*
3 * rmhook.c
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 *    copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 *    Communications, Inc. trademarks, including the mark "WHISTLE
16 *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 *    such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * $FreeBSD$
38 */
39
40#include <err.h>
41#include <netgraph.h>
42#include <stdio.h>
43
44#include "ngctl.h"
45
46static int RmHookCmd(int ac, char **av);
47
48const struct ngcmd rmhook_cmd = {
49	RmHookCmd,
50	"rmhook [path] <hook>",
51	"Disconnect hook \"hook\" of the node at \"path\"",
52	"The rmhook command forces the node at \"path\" to break the link"
53	" formed by its hook \"hook\", if connected."
54	" If \"path\" is omitted then \".\" is assumed.",
55	{ "disconnect" }
56};
57
58static int
59RmHookCmd(int ac, char **av)
60{
61	struct ngm_rmhook rmh;
62	const char *path = ".";
63
64	/* Get arguments */
65	switch (ac) {
66	case 3:
67		path = av[1];
68		ac--;
69		av++;
70		/* FALLTHROUGH */
71	case 2:
72		snprintf(rmh.ourhook, sizeof(rmh.ourhook), "%s", av[1]);
73		break;
74	default:
75		return (CMDRTN_USAGE);
76	}
77
78	/* Send message */
79	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
80	    NGM_RMHOOK, &rmh, sizeof(rmh)) < 0) {
81		warn("send msg");
82		return (CMDRTN_ERROR);
83	}
84	return (CMDRTN_OK);
85}
86
87