usr.sbin/ngctl/list.c

   1 /*
   2  * list.c
   3  *
   4  * Copyright (c) 1996-1999 Whistle Communications, Inc.
   5  * All rights reserved.
   6  *
   7  * Subject to the following obligations and disclaimer of warranty, use and
   8  * redistribution of this software, in source or object code forms, with or
   9  * without modifications are expressly permitted by Whistle Communications;
  10  * provided, however, that:
  11  * 1. Any and all reproductions of the source or object code must include the
  12  *    copyright notice above and the following disclaimer of warranties; and
  13  * 2. No rights are granted, in any manner or form, to use Whistle
  14  *    Communications, Inc. trademarks, including the mark "WHISTLE
  15  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
  16  *    such appears in the above copyright notice or in the software.
  17  *
  18  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
  19  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
  20  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
  21  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  23  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
  24  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
  25  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
  26  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
  27  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
  28  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  29  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
  31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  33  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
  34  * OF SUCH DAMAGE.
  35  *
  36  * $FreeBSD: src/usr.sbin/ngctl/list.c,v 1.2 1999/11/30 02:45:30 archie Exp $
  37  * $DragonFly: src/usr.sbin/ngctl/list.c,v 1.6 2008/07/10 18:29:52 swildner Exp $
  38  */
  39
  40 #include "ngctl.h"
  41
  42 static int ListCmd(int ac, const char **av);
  43
  44 const struct ngcmd list_cmd = {
  45         ListCmd,
  46         "list [-n]",
  47         "Show information about all nodes",
  48         "The list command shows information every node that currently"
  49         " exists in the netgraph system. The optional -n argument limits"
  50         " this list to only those nodes with a global name assignment.",
  51         { "ls" }
  52 };
  53
  54 static int
  55 ListCmd(int ac, const char **av)
  56 {
  57         u_char rbuf[16 * 1024];
  58         struct ng_mesg *const resp = (struct ng_mesg *) rbuf;
  59         struct namelist *const nlist = (struct namelist *) resp->data;
  60         int named_only = 0;
  61         int ch, rtn = CMDRTN_OK;
  62         uint32_t k;
  63
  64         /* Get options */
  65         optind = 1;
  66         while ((ch = getopt(ac, __DECONST(char **, av), "n")) != -1) {
  67                 switch (ch) {
  68                 case 'n':
  69                         named_only = 1;
  70                         break;
  71                 case '?':
  72                 default:
  73                         return(CMDRTN_USAGE);
  74                         break;
  75                 }
  76         }
  77         ac -= optind;
  78         av += optind;
  79
  80         /* Get arguments */
  81         switch (ac) {
  82         case 0:
  83                 break;
  84         default:
  85                 return(CMDRTN_USAGE);
  86         }
  87
  88         /* Get list of nodes */
  89         if (NgSendMsg(csock, ".", NGM_GENERIC_COOKIE,
  90             named_only ? NGM_LISTNAMES : NGM_LISTNODES, NULL, 0) < 0) {
  91                 warn("send msg");
  92                 return(CMDRTN_ERROR);
  93         }
  94         if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) {
  95                 warn("recv msg");
  96                 return(CMDRTN_ERROR);
  97         }
  98
  99         /* Show each node */
 100         printf("There are %d total %snodes:\n",
 101             nlist->numnames, named_only ? "named " : "");
 102         for (k = 0; k < nlist->numnames; k++) {
 103                 char    path[NG_PATHSIZ];
 104                 const char *new_av[3] = { "list", "-n", path };
 105
 106                 snprintf(path, sizeof(path),
 107                     "[%lx]:", (u_long) nlist->nodeinfo[k].id);
 108                 if ((rtn = (*show_cmd.func)(3, new_av)) != CMDRTN_OK)
 109                         break;
 110         }
 111
 112         /* Done */
 113         return (rtn);
 114 }