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mbufs.c revision 1.7 
      1 /*	$NetBSD: mbufs.c,v 1.7 1999/03/04 03:02:02 bgrayson Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
     40 #endif
     41 __RCSID("$NetBSD: mbufs.c,v 1.7 1999/03/04 03:02:02 bgrayson 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 
     55 static struct mbstat *mb;
     56 
     57 char *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 
     76 WINDOW *
     77 openmbufs()
     78 {
     79 
     80 	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
     81 }
     82 
     83 void
     84 closembufs(w)
     85 	WINDOW *w;
     86 {
     87 
     88 	if (w == NULL)
     89 		return;
     90 	wclear(w);
     91 	wrefresh(w);
     92 	delwin(w);
     93 }
     94 
     95 void
     96 labelmbufs()
     97 {
     98 
     99 	wmove(wnd, 0, 0); wclrtoeol(wnd);
    100 	mvwaddstr(wnd, 0, 10,
    101 	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
    102 }
    103 
    104 void
    105 showmbufs()
    106 {
    107 	int i, j, max, index;
    108 	char buf[10];
    109 
    110 	if (mb == 0)
    111 		return;
    112 	for (j = 0; j < getmaxy(wnd); j++) {
    113 		max = 0, index = -1;
    114 		for (i = 0; i < getmaxy(wnd); i++)
    115 			if (mb->m_mtypes[i] > max) {
    116 				max = mb->m_mtypes[i];
    117 				index = i;
    118 			}
    119 		if (max == 0)
    120 			break;
    121 		if (j > NNAMES)
    122 			mvwprintw(wnd, 1+j, 0, "%10d", index);
    123 		else
    124 			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
    125 		wmove(wnd, 1 + j, 10);
    126 		if (max > 60) {
    127 			snprintf(buf, sizeof buf, " %5d", max);
    128 			max = 60;
    129 			while (max--)
    130 				waddch(wnd, 'X');
    131 			waddstr(wnd, buf);
    132 		} else {
    133 			while (max--)
    134 				waddch(wnd, 'X');
    135 			wclrtoeol(wnd);
    136 		}
    137 		mb->m_mtypes[index] = 0;
    138 	}
    139 	wmove(wnd, 1+j, 0); wclrtobot(wnd);
    140 }
    141 
    142 static struct nlist namelist[] = {
    143 #define	X_MBSTAT	0
    144 	{ "_mbstat" },
    145 	{ "" }
    146 };
    147 
    148 int
    149 initmbufs()
    150 {
    151 
    152 	if (namelist[X_MBSTAT].n_type == 0) {
    153 		if (kvm_nlist(kd, namelist)) {
    154 			nlisterr(namelist);
    155 			return(0);
    156 		}
    157 		if (namelist[X_MBSTAT].n_type == 0) {
    158 			error("namelist on %s failed", _PATH_UNIX);
    159 			return(0);
    160 		}
    161 	}
    162 	if (mb == 0)
    163 		mb = (struct mbstat *)calloc(1, sizeof (*mb));
    164 	return(1);
    165 }
    166 
    167 void
    168 fetchmbufs()
    169 {
    170 
    171 	if (namelist[X_MBSTAT].n_type == 0)
    172 		return;
    173 	NREAD(X_MBSTAT, mb, sizeof (*mb));
    174 }
    175