list.c revision 125011 
1
2/*
3 * list.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: head/usr.sbin/ngctl/list.c 125011 2004-01-26 10:27:18Z ru $
38 */
39
40#include "ngctl.h"
41
42static int ListCmd(int ac, char **av);
43
44const 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
54static int
55ListCmd(int ac, 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	u_int k;
63
64	/* Get options */
65	optind = 1;
66	while ((ch = getopt(ac, av, "n")) != EOF) {
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		char	*argv[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, argv)) != CMDRTN_OK)
109			break;
110	}
111
112	/* Done */
113	return (rtn);
114}
115
116