1 /* $OpenBSD: mbufs.c,v 1.13 2003/06/03 02:56:17 millert 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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 static char rcsid[] = "$OpenBSD: mbufs.c,v 1.13 2003/06/03 02:56:17 millert Exp $"; 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/types.h> 42 #include <sys/mbuf.h> 43 #include <sys/sysctl.h> 44 45 #include <stdlib.h> 46 #include <string.h> 47 #include <nlist.h> 48 #include <err.h> 49 #include <paths.h> 50 #include "systat.h" 51 #include "extern.h" 52 53 static struct mbstat *mb; 54 55 char *mtnames[] = { 56 "free", 57 "data", 58 "headers", 59 "sockets", 60 "pcbs", 61 "routes", 62 "hosts", 63 "arps", 64 "socknames", 65 "zombies", 66 "sockopts", 67 "frags", 68 "rights", 69 "ifaddrs", 70 }; 71 72 #define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 73 74 WINDOW * 75 openmbufs(void) 76 { 77 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 78 } 79 80 void 81 closembufs(WINDOW *w) 82 { 83 if (w == NULL) 84 return; 85 wclear(w); 86 wrefresh(w); 87 delwin(w); 88 } 89 90 void 91 labelmbufs(void) 92 { 93 wmove(wnd, 0, 0); wclrtoeol(wnd); 94 mvwaddstr(wnd, 0, 10, 95 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 96 } 97 98 void 99 showmbufs(void) 100 { 101 int i, j, max, index; 102 char buf[13]; 103 104 if (mb == 0) 105 return; 106 for (j = 0; j < wnd->_maxy; j++) { 107 max = 0, index = -1; 108 for (i = 0; i < wnd->_maxy; i++) 109 if (mb->m_mtypes[i] > max) { 110 max = mb->m_mtypes[i]; 111 index = i; 112 } 113 if (max == 0) 114 break; 115 if (j > NNAMES) 116 mvwprintw(wnd, 1+j, 0, "%10d", index); 117 else 118 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]); 119 wmove(wnd, 1 + j, 10); 120 if (max > 60) { 121 snprintf(buf, sizeof buf, " %d", max); 122 max = 60; 123 while (max--) 124 waddch(wnd, 'X'); 125 waddstr(wnd, buf); 126 } else { 127 while (max--) 128 waddch(wnd, 'X'); 129 wclrtoeol(wnd); 130 } 131 mb->m_mtypes[index] = 0; 132 } 133 wmove(wnd, 1+j, 0); wclrtobot(wnd); 134 } 135 136 static struct nlist namelist[] = { 137 #define X_MBSTAT 0 138 { "_mbstat" }, /* sysctl */ 139 { "" } 140 }; 141 142 int 143 initmbufs(void) 144 { 145 int ret; 146 147 if (kd != NULL) { 148 if (namelist[X_MBSTAT].n_type == 0) { 149 if ((ret = kvm_nlist(kd, namelist)) == -1) 150 errx(1, "%s", kvm_geterr(kd)); 151 else if (ret) 152 nlisterr(namelist); 153 if (namelist[X_MBSTAT].n_type == 0) { 154 error("namelist on %s failed", _PATH_UNIX); 155 return(0); 156 } 157 } 158 } 159 if (mb == 0) 160 mb = (struct mbstat *)calloc(1, sizeof (*mb)); 161 return(1); 162 } 163 164 void 165 fetchmbufs(void) 166 { 167 int mib[2]; 168 size_t size = sizeof (*mb); 169 170 if (kd == NULL) { 171 mib[0] = CTL_KERN; 172 mib[1] = KERN_MBSTAT; 173 if (sysctl(mib, 2, mb, &size, NULL, 0) < 0) 174 err(1, "sysctl(KERN_MBSTAT) failed"); 175 } else { 176 if (namelist[X_MBSTAT].n_type == 0) 177 return; 178 NREAD(X_MBSTAT, mb, size); 179 } 180 } 181