1 /*- 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mbufs.c 8.1 (Berkeley) 6/6/93 30 * $FreeBSD: src/usr.bin/systat/mbufs.c,v 1.10.2.1 2000/08/26 09:36:55 ps Exp $ 31 */ 32 33 #define _KERNEL_STRUCTURES 34 #include <sys/param.h> 35 #include <sys/types.h> 36 #include <sys/mbuf.h> 37 #include <sys/sysctl.h> 38 39 #include <errno.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <paths.h> 43 #include "systat.h" 44 #include "extern.h" 45 46 static struct mbstat *mb; 47 static u_long *m_mbtypes; 48 static int nmbtypes; 49 50 static struct mtnames { 51 int mt_type; 52 const char *mt_name; 53 } mtnames[] = { 54 { MT_DATA, "data"}, 55 { MT_HEADER, "headers"}, 56 { MT_SONAME, "socknames"}, 57 { MT_CONTROL, "control"}, 58 { MT_OOBDATA, "oobdata"} 59 }; 60 61 #define NNAMES (sizeof (mtnames) / sizeof (mtnames[0])) 62 63 WINDOW * 64 openmbufs(void) 65 { 66 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 67 } 68 69 void 70 closembufs(WINDOW *w) 71 { 72 if (w == NULL) 73 return; 74 wclear(w); 75 wrefresh(w); 76 delwin(w); 77 } 78 79 void 80 labelmbufs(void) 81 { 82 wmove(wnd, 0, 0); wclrtoeol(wnd); 83 mvwaddstr(wnd, 0, 10, 84 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60"); 85 } 86 87 void 88 showmbufs(void) 89 { 90 int i, j, idx; 91 u_long max; 92 char buf[10]; 93 const char *mtname; 94 95 if (mb == NULL) 96 return; 97 for (j = 0; j < wnd->_maxy; j++) { 98 max = 0, idx = -1; 99 for (i = 0; i < wnd->_maxy; i++) { 100 if (i == MT_FREE) 101 continue; 102 if (i >= nmbtypes) 103 break; 104 if (m_mbtypes[i] > max) { 105 max = m_mbtypes[i]; 106 idx = i; 107 } 108 } 109 if (max == 0) 110 break; 111 112 mtname = NULL; 113 for (i = 0; i < (int)NNAMES; i++) 114 if (mtnames[i].mt_type == idx) 115 mtname = mtnames[i].mt_name; 116 if (mtname == NULL) 117 mvwprintw(wnd, 1+j, 0, "%10d", idx); 118 else 119 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname); 120 wmove(wnd, 1 + j, 10); 121 if (max > 60) { 122 snprintf(buf, sizeof(buf), " %lu", max); 123 max = 60; 124 while (max--) 125 waddch(wnd, 'X'); 126 waddstr(wnd, buf); 127 } else 128 while (max--) 129 waddch(wnd, 'X'); 130 wclrtoeol(wnd); 131 mb->m_mbufs -= m_mbtypes[idx]; 132 m_mbtypes[idx] = 0; 133 } 134 if (mb->m_mbufs) { 135 mvwprintw(wnd, 1+j, 0, "%-10.10s", "free"); 136 if (mb->m_mbufs > 60) { 137 snprintf(buf, sizeof(buf), " %ld", mb->m_mbufs); 138 mb->m_mbufs = 60; 139 while (mb->m_mbufs--) 140 waddch(wnd, 'X'); 141 waddstr(wnd, buf); 142 } else { 143 while(mb->m_mbufs--) 144 waddch(wnd, 'X'); 145 } 146 wclrtoeol(wnd); 147 j++; 148 } 149 wmove(wnd, 1+j, 0); wclrtobot(wnd); 150 } 151 152 int 153 initmbufs(void) 154 { 155 size_t len, mbtypeslen; 156 157 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) { 158 error("sysctl getting mbtypes size failed"); 159 return 0; 160 } 161 if ((m_mbtypes = calloc(1, mbtypeslen)) == NULL) { 162 error("calloc mbtypes failed"); 163 return 0; 164 } 165 nmbtypes = mbtypeslen / sizeof(*m_mbtypes); 166 167 len = 0; 168 if (sysctlbyname("kern.ipc.mbstat", 0, &len, 0, 0) < 0) { 169 error("sysctl getting mbstat size failed"); 170 return 0; 171 } 172 173 if (mb == NULL) 174 mb = (struct mbstat *)calloc(1, sizeof *mb); 175 return 1; 176 } 177 178 void 179 fetchmbufs(void) 180 { 181 size_t len; 182 183 len = sizeof *mb; 184 if (sysctlbyname("kern.ipc.mbstat", mb, &len, 0, 0) < 0) 185 printw("sysctl: mbstat: %s", strerror(errno)); 186 187 len = nmbtypes * sizeof *m_mbtypes; 188 if (sysctlbyname("kern.ipc.mbtypes", m_mbtypes, &len, 0, 0) < 0) 189 printw("sysctl: mbtypes: %s", strerror(errno)); 190 } 191