status.c revision 158882
1178476Sjb
2178476Sjb/*
3178476Sjb * status.c
4178476Sjb *
5178476Sjb * Copyright (c) 1996-1999 Whistle Communications, Inc.
6178476Sjb * All rights reserved.
7178476Sjb *
8178476Sjb * Subject to the following obligations and disclaimer of warranty, use and
9178476Sjb * redistribution of this software, in source or object code forms, with or
10178476Sjb * without modifications are expressly permitted by Whistle Communications;
11178476Sjb * provided, however, that:
12178476Sjb * 1. Any and all reproductions of the source or object code must include the
13178476Sjb *    copyright notice above and the following disclaimer of warranties; and
14178476Sjb * 2. No rights are granted, in any manner or form, to use Whistle
15178476Sjb *    Communications, Inc. trademarks, including the mark "WHISTLE
16178476Sjb *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17178476Sjb *    such appears in the above copyright notice or in the software.
18178476Sjb *
19178476Sjb * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20178476Sjb * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21178476Sjb * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22178476Sjb * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23178476Sjb * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24178476Sjb * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25178476Sjb * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26178476Sjb * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27178476Sjb * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28178476Sjb * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29178476Sjb * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30178476Sjb * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31178476Sjb * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32178476Sjb * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33178476Sjb * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34178476Sjb * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35178476Sjb * OF SUCH DAMAGE.
36178476Sjb *
37178476Sjb * $FreeBSD: head/usr.sbin/ngctl/status.c 158882 2006-05-24 14:46:55Z glebius $
38178476Sjb */
39178476Sjb
40178476Sjb#include <err.h>
41178476Sjb#include <errno.h>
42#include <netgraph.h>
43#include <stdio.h>
44
45#include "ngctl.h"
46
47#define NOSTATUS	"<no status>"
48
49static int StatusCmd(int ac, char **av);
50
51const struct ngcmd status_cmd = {
52	StatusCmd,
53	"status <path>",
54	"Get human readable status information from the node at <path>",
55	NULL,
56	{}
57};
58
59static int
60StatusCmd(int ac, char **av)
61{
62	u_char sbuf[sizeof(struct ng_mesg) + NG_TEXTRESPONSE];
63	struct ng_mesg *const resp = (struct ng_mesg *) sbuf;
64	char *const status = (char *) resp->data;
65	char *path;
66	int nostat = 0;
67
68	/* Get arguments */
69	switch (ac) {
70	case 2:
71		path = av[1];
72		break;
73	default:
74		return(CMDRTN_USAGE);
75	}
76
77	/* Get node status summary */
78	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
79	    NGM_TEXT_STATUS, NULL, 0) < 0) {
80		switch (errno) {
81		case EINVAL:
82			nostat = 1;
83			break;
84		default:
85			warn("send msg");
86			return(CMDRTN_ERROR);
87		}
88	} else {
89		if (NgRecvMsg(csock, resp, sizeof(sbuf), NULL) < 0
90		    || (resp->header.flags & NGF_RESP) == 0)
91			nostat = 1;
92	}
93
94	/* Show it */
95	if (nostat)
96		printf("No status available for \"%s\"\n", path);
97	else
98		printf("Status for \"%s\":\n%s\n", path, status);
99	return(CMDRTN_OK);
100}
101
102