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 NELEM(mtnames)
62
63 WINDOW *
openmbufs(void)64 openmbufs(void)
65 {
66 return (subwin(stdscr, LINES-5-1, 0, 5, 0));
67 }
68
69 void
closembufs(WINDOW * w)70 closembufs(WINDOW *w)
71 {
72 if (w == NULL)
73 return;
74 wclear(w);
75 wrefresh(w);
76 delwin(w);
77 }
78
79 void
labelmbufs(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
showmbufs(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
initmbufs(void)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
fetchmbufs(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