mbufs.c revision 1.3 
1/*	$OpenBSD: mbufs.c,v 1.3 1996/06/26 05:40:08 deraadt Exp $	*/
2/*	$NetBSD: mbufs.c,v 1.2 1995/01/20 08:52:02 jtc Exp $	*/
3
4/*-
5 * Copyright (c) 1980, 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
40#endif
41static char rcsid[] = "$OpenBSD: mbufs.c,v 1.3 1996/06/26 05:40:08 deraadt Exp $";
42#endif /* not lint */
43
44#include <sys/param.h>
45#include <sys/types.h>
46#include <sys/mbuf.h>
47
48#include <stdlib.h>
49#include <string.h>
50#include <nlist.h>
51#include <paths.h>
52#include "systat.h"
53#include "extern.h"
54
55static struct mbstat *mb;
56
57char *mtnames[] = {
58	"free",
59	"data",
60	"headers",
61	"sockets",
62	"pcbs",
63	"routes",
64	"hosts",
65	"arps",
66	"socknames",
67	"zombies",
68	"sockopts",
69	"frags",
70	"rights",
71	"ifaddrs",
72};
73
74#define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
75
76WINDOW *
77openmbufs()
78{
79	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
80}
81
82void
83closembufs(w)
84	WINDOW *w;
85{
86	if (w == NULL)
87		return;
88	wclear(w);
89	wrefresh(w);
90	delwin(w);
91}
92
93void
94labelmbufs()
95{
96	wmove(wnd, 0, 0); wclrtoeol(wnd);
97	mvwaddstr(wnd, 0, 10,
98	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
99}
100
101void
102showmbufs()
103{
104	register int i, j, max, index;
105	char buf[10];
106
107	if (mb == 0)
108		return;
109	for (j = 0; j < wnd->_maxy; j++) {
110		max = 0, index = -1;
111		for (i = 0; i < wnd->_maxy; i++)
112			if (mb->m_mtypes[i] > max) {
113				max = mb->m_mtypes[i];
114				index = i;
115			}
116		if (max == 0)
117			break;
118		if (j > NNAMES)
119			mvwprintw(wnd, 1+j, 0, "%10d", index);
120		else
121			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
122		wmove(wnd, 1 + j, 10);
123		if (max > 60) {
124			sprintf(buf, " %d", max);
125			max = 60;
126			while (max--)
127				waddch(wnd, 'X');
128			waddstr(wnd, buf);
129		} else {
130			while (max--)
131				waddch(wnd, 'X');
132			wclrtoeol(wnd);
133		}
134		mb->m_mtypes[index] = 0;
135	}
136	wmove(wnd, 1+j, 0); wclrtobot(wnd);
137}
138
139static struct nlist namelist[] = {
140#define	X_MBSTAT	0
141	{ "_mbstat" },
142	{ "" }
143};
144
145int
146initmbufs()
147{
148	if (namelist[X_MBSTAT].n_type == 0) {
149		if (kvm_nlist(kd, namelist)) {
150			nlisterr(namelist);
151			return(0);
152		}
153		if (namelist[X_MBSTAT].n_type == 0) {
154			error("namelist on %s failed", _PATH_UNIX);
155			return(0);
156		}
157	}
158	if (mb == 0)
159		mb = (struct mbstat *)calloc(1, sizeof (*mb));
160	return(1);
161}
162
163void
164fetchmbufs()
165{
166	if (namelist[X_MBSTAT].n_type == 0)
167		return;
168	NREAD(X_MBSTAT, mb, sizeof (*mb));
169}
170