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
38 #include <err.h>
39 #include <netgraph.h>
40 #include <stdio.h>
41
42 #include "ngctl.h"
43
44 static int RmHookCmd(int ac, char **av);
45
46 const struct ngcmd rmhook_cmd = {
47 RmHookCmd,
48 "rmhook [path] <hook>",
49 "Disconnect hook \"hook\" of the node at \"path\"",
50 "The rmhook command forces the node at \"path\" to break the link"
51 " formed by its hook \"hook\", if connected."
52 " If \"path\" is omitted then \".\" is assumed.",
53 { "disconnect" }
54 };
55
56 static int
RmHookCmd(int ac,char ** av)57 RmHookCmd(int ac, char **av)
58 {
59 struct ngm_rmhook rmh;
60 const char *path = ".";
61
62 /* Get arguments */
63 switch (ac) {
64 case 3:
65 path = av[1];
66 ac--;
67 av++;
68 /* FALLTHROUGH */
69 case 2:
70 snprintf(rmh.ourhook, sizeof(rmh.ourhook), "%s", av[1]);
71 break;
72 default:
73 return (CMDRTN_USAGE);
74 }
75
76 /* Send message */
77 if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
78 NGM_RMHOOK, &rmh, sizeof(rmh)) < 0) {
79 warn("send msg");
80 return (CMDRTN_ERROR);
81 }
82 return (CMDRTN_OK);
83 }
84
85