2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 static const char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
41 static const char copyright[] =
42 "@(#) Copyright (c) 1980, 1992, 1993\n\
43 The Regents of the University of California. All rights reserved.\n";
46 #include <sys/param.h>
48 #include <sys/sysctl.h>
49 #include <sys/queue.h>
71 unsigned int delay = 5000000; /* in microseconds */
72 int verbose = 1; /* to report kvm read errs */
73 struct clockinfo clkinfo;
77 char hostname[MAXHOSTNAMELEN];
82 static WINDOW *wload; /* one line window for load average */
85 SLIST_ENTRY(cmdentry) link;
86 char *cmd; /* Command name */
87 char *argv; /* Arguments vector for a command */
89 SLIST_HEAD(, cmdentry) commands;
92 parse_cmd_args (int argc, char **argv)
95 struct cmdentry *cmd = NULL;
99 if (argv[0][0] == '-') {
101 SLIST_INSERT_HEAD(&commands, cmd, link);
103 if (memcmp(argv[0], "--", 3) == 0) {
104 in_command = 0; /*-- ends a command explicitly*/
108 cmd = calloc(1, sizeof(struct cmdentry));
110 errx(1, "memory allocating failure");
111 cmd->cmd = strdup(&argv[0][1]);
112 if (cmd->cmd == NULL)
113 errx(1, "memory allocating failure");
116 else if (!in_command) {
117 t = strtod(argv[0], NULL) * 1000000.0;
118 if (t > 0 && t < (double)UINT_MAX)
119 delay = (unsigned int)t;
121 else if (cmd != NULL) {
122 cmd->argv = strdup(argv[0]);
123 if (cmd->argv == NULL)
124 errx(1, "memory allocating failure");
126 SLIST_INSERT_HEAD(&commands, cmd, link);
129 errx(1, "invalid arguments list");
133 if (in_command && cmd != NULL)
134 SLIST_INSERT_HEAD(&commands, cmd, link);
139 main(int argc, char **argv)
141 char errbuf[_POSIX2_LINE_MAX], dummy;
143 struct cmdentry *cmd = NULL;
145 (void) setlocale(LC_ALL, "");
147 SLIST_INIT(&commands);
150 if (argv[0][0] == '-') {
153 p = lookup(&argv[0][1]);
154 if (p == (struct cmdtab *)-1)
155 errx(1, "%s: ambiguous request", &argv[0][1]);
156 if (p == (struct cmdtab *)0)
157 errx(1, "%s: unknown request", &argv[0][1]);
161 parse_cmd_args (argc, argv);
164 kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
167 * Try to actually read something, we may be in a jail, and
168 * have /dev/null opened as /dev/mem.
170 if (kvm_nlist(kd, namelist) != 0 || namelist[0].n_value == 0 ||
171 kvm_read(kd, namelist[0].n_value, &dummy, sizeof(dummy)) !=
179 * Maybe we are lacking permissions? Retry, this time with bogus
180 * devices. We can now use sysctl only.
183 kd = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, _PATH_DEVNULL,
192 signal(SIGQUIT, die);
193 signal(SIGTERM, die);
196 * Initialize display. Load average appears in a one line
197 * window of its own. Current command's display appears in
198 * an overlapping sub-window of stdscr configured by the display
199 * routines to minimize update work by curses.
203 wnd = (*curcmd->c_open)();
205 warnx("couldn't initialize display");
208 wload = newwin(1, 0, 1, 20);
210 warnx("couldn't set up load average window");
213 gethostname(hostname, sizeof (hostname));
214 size = sizeof(clkinfo);
215 if (sysctlbyname("kern.clockrate", &clkinfo, &size, NULL, 0)
216 || size != sizeof(clkinfo)) {
217 error("kern.clockrate");
220 hertz = clkinfo.stathz;
222 curcmd->c_flags |= CF_INIT;
225 if (curcmd->c_cmd != NULL)
226 SLIST_FOREACH (cmd, &commands, link)
227 if (!curcmd->c_cmd(cmd->cmd, cmd->argv))
228 warnx("command is not understood");
243 if (curcmd->c_flags & CF_LOADAV) {
245 "/0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10");
246 mvaddstr(1, 5, "Load Average");
248 if (curcmd->c_flags & CF_ZFSARC) {
250 " Total MFU MRU Anon Hdr L2Hdr Other");
251 mvaddstr(1, 5, "ZFS ARC ");
253 (*curcmd->c_label)();
255 mvprintw(21, 25, "CPU usage on %s", hostname);
266 /* Get the load average over the last minute. */
267 (void) getloadavg(avenrun, nitems(avenrun));
268 (*curcmd->c_fetch)();
269 if (curcmd->c_flags & CF_LOADAV) {
270 j = 5.0*avenrun[0] + 0.5;
271 dellave -= avenrun[0];
280 dellave = avenrun[0];
281 wmove(wload, 0, 0); wclrtoeol(wload);
282 for (i = MIN(j, 50); i > 0; i--)
285 wprintw(wload, " %4.1f", avenrun[0]);
287 if (curcmd->c_flags & CF_ZFSARC) {
288 uint64_t arc[7] = {};
289 size_t size = sizeof(arc[0]);
290 if (sysctlbyname("kstat.zfs.misc.arcstats.size",
291 &arc[0], &size, NULL, 0) == 0 ) {
292 GETSYSCTL("vfs.zfs.mfu_size", arc[1]);
293 GETSYSCTL("vfs.zfs.mru_size", arc[2]);
294 GETSYSCTL("vfs.zfs.anon_size", arc[3]);
295 GETSYSCTL("kstat.zfs.misc.arcstats.hdr_size", arc[4]);
296 GETSYSCTL("kstat.zfs.misc.arcstats.l2_hdr_size", arc[5]);
297 GETSYSCTL("kstat.zfs.misc.arcstats.bonus_size", arc[6]);
298 GETSYSCTL("kstat.zfs.misc.arcstats.dnode_size", arc_stat);
300 GETSYSCTL("kstat.zfs.misc.arcstats.dbuf_size", arc_stat);
302 wmove(wload, 0, 0); wclrtoeol(wload);
303 for (i = 0 ; i < nitems(arc); i++)
304 sysputuint64(wload, 0, i*8+2, 6, arc[i], 0);
307 (*curcmd->c_refresh)();
308 if (curcmd->c_flags & (CF_LOADAV |CF_ZFSARC))
319 (void) getloadavg(avenrun, nitems(avenrun));
320 mvprintw(CMDLINE, 0, "%4.1f %4.1f %4.1f",
321 avenrun[0], avenrun[1], avenrun[2]);
326 die(int signo __unused)
338 error(const char *fmt, ...)
346 getyx(stdscr, oy, ox);
347 (void) vsnprintf(buf, sizeof(buf), fmt, ap);
350 mvaddstr(CMDLINE, 0, buf);
355 (void) vfprintf(stderr, fmt, ap);
356 fprintf(stderr, "\n");
362 nlisterr(struct nlist n_list[])
368 mvprintw(2, 10, "systat: nlist: can't find following symbols:");
370 n_list[i].n_name != NULL && *n_list[i].n_name != '\0'; i++)
371 if (n_list[i].n_value == 0)
372 mvprintw(2 + ++n, 10, "%s", n_list[i].n_name);