1 /* $NetBSD: mbufs.c,v 1.8 2000/06/04 18:29:13 mycroft 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 1.8 2000/06/04 18:29:13 mycroft 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 wclrtoeol(wnd); 134 whline(wnd, 'X', max); 135 } 136 mb->m_mtypes[index] = 0; 137 } 138 wmove(wnd, 1+j, 0); wclrtobot(wnd); 139 } 140 141 static struct nlist namelist[] = { 142 #define X_MBSTAT 0 143 { "_mbstat" }, 144 { "" } 145 }; 146 147 int 148 initmbufs() 149 { 150 151 if (namelist[X_MBSTAT].n_type == 0) { 152 if (kvm_nlist(kd, namelist)) { 153 nlisterr(namelist); 154 return(0); 155 } 156 if (namelist[X_MBSTAT].n_type == 0) { 157 error("namelist on %s failed", _PATH_UNIX); 158 return(0); 159 } 160 } 161 if (mb == 0) 162 mb = (struct mbstat *)calloc(1, sizeof (*mb)); 163 return(1); 164 } 165 166 void 167 fetchmbufs() 168 { 169 170 if (namelist[X_MBSTAT].n_type == 0) 171 return; 172 NREAD(X_MBSTAT, mb, sizeof (*mb)); 173 } 174