usr.sbin/ngctl/rmhook.c

   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
  46 static int RmHookCmd(int ac, char **av);
  47
  48 const 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
  58 static int
  59 RmHookCmd(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