2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1991, 1993, 1994
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 copyright[] =
38 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
39 The Regents of the University of California. All rights reserved.\n";
43 static const char sccsid[] = "@(#)w.c 8.4 (Berkeley) 4/16/94";
47 * w - print system status (who and what)
49 * This program is similar to the systat command on Tenex/Tops 10/20
52 #include <sys/param.h>
55 #include <sys/sysctl.h>
58 #include <sys/ioctl.h>
60 #include <sys/socket.h>
62 #include <sys/types.h>
64 #include <machine/cpu.h>
65 #include <netinet/in.h>
66 #include <arpa/inet.h>
67 #include <arpa/nameser.h>
94 static struct utmpx *utmp;
95 static struct winsize ws;
97 static time_t now; /* the current time of day */
98 static int ttywidth; /* width of tty */
99 static int fromwidth = 0; /* max width of "from" field */
100 static int argwidth; /* width of arguments */
101 static int header = 1; /* true if -h flag: don't print heading */
102 static int nflag; /* true if -n flag: don't convert addrs */
103 static int dflag; /* true if -d flag: output debug info */
104 static int sortidle; /* sort by idle time */
105 int use_ampm; /* use AM/PM time */
106 static int use_comma; /* use comma as floats separator */
107 static char **sel_users; /* login array of particular users selected */
110 * One of these per active utmp entry.
112 static struct entry {
115 dev_t tdev; /* dev_t of terminal */
116 time_t idle; /* idle time of terminal in seconds */
117 struct kinfo_proc *kp; /* `most interesting' proc */
118 char *args; /* arg list of interesting process */
119 struct kinfo_proc *dkp; /* debug option proc list */
120 char *from; /* "from": name or addr */
121 char *save_from; /* original "from": name or addr */
122 } *ep, *ehead = NULL, **nextp = &ehead;
124 #define debugproc(p) *(&((struct kinfo_proc *)p)->ki_udata)
126 #define W_DISPUSERSIZE 10
127 #define W_DISPLINESIZE 8
128 #define W_MAXHOSTSIZE 40
130 static void pr_header(time_t *, int);
131 static struct stat *ttystat(char *);
132 static void usage(int);
134 char *fmt_argv(char **, char *, char *, size_t); /* ../../bin/ps/fmt.c */
137 main(int argc, char *argv[])
139 struct kinfo_proc *kp;
140 struct kinfo_proc *dkp;
143 int ch, i, nentries, nusers, wcmd, longidle, longattime;
144 const char *memf, *nlistf, *p, *save_p;
146 char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
147 char fn[MAXHOSTNAMELEN];
150 (void)setlocale(LC_ALL, "");
151 use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0');
152 use_comma = (*nl_langinfo(RADIXCHAR) != ',');
154 argc = xo_parse_args(argc, argv);
158 /* Are we w(1) or uptime(1)? */
159 if (strcmp(basename(argv[0]), "uptime") == 0) {
167 memf = _PATH_DEVNULL;
169 while ((ch = getopt(argc, argv, p)) != -1)
190 case 'f': case 'l': case 's': case 'u': case 'w':
191 warnx("[-flsuw] no longer supported");
200 if (!(_res.options & RES_INIT))
202 _res.retrans = 2; /* resolver timeout to 2 seconds per try */
203 _res.retry = 1; /* only try once.. */
205 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
206 errx(1, "%s", errbuf);
214 for (nusers = 0; (utmp = getutxent()) != NULL;) {
215 struct addrinfo hints, *res;
216 struct sockaddr_storage ss;
217 struct sockaddr *sa = (struct sockaddr *)&ss;
218 struct sockaddr_in *lsin = (struct sockaddr_in *)&ss;
219 struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)&ss;
222 if (utmp->ut_type != USER_PROCESS)
224 if (!(stp = ttystat(utmp->ut_line)))
225 continue; /* corrupted record */
234 for (user = sel_users; !usermatch && *user; user++)
235 if (!strcmp(utmp->ut_user, *user))
240 if ((ep = calloc(1, sizeof(struct entry))) == NULL)
244 memmove(&ep->utmp, utmp, sizeof *utmp);
245 ep->tdev = stp->st_rdev;
247 * If this is the console device, attempt to ascertain
248 * the true console device dev_t.
253 size = sizeof(dev_t);
254 (void)sysctlbyname("machdep.consdev", &ep->tdev, &size, NULL, 0);
256 touched = stp->st_atime;
257 if (touched < ep->utmp.ut_tv.tv_sec) {
258 /* tty untouched since before login */
259 touched = ep->utmp.ut_tv.tv_sec;
261 if ((ep->idle = now - touched) < 0)
264 save_p = p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-";
265 if ((x_suffix = strrchr(p, ':')) != NULL) {
266 if ((dot = strchr(x_suffix, '.')) != NULL &&
267 strchr(dot+1, '.') == NULL)
274 memset(&ss, '\0', sizeof(ss));
275 if (inet_pton(AF_INET6, p, &lsin6->sin6_addr) == 1) {
276 lsin6->sin6_len = sizeof(*lsin6);
277 lsin6->sin6_family = AF_INET6;
279 } else if (inet_pton(AF_INET, p, &lsin->sin_addr) == 1) {
280 lsin->sin_len = sizeof(*lsin);
281 lsin->sin_family = AF_INET;
285 /* Attempt to change an IP address into a name */
286 if (isaddr && realhostname_sa(fn, sizeof(fn), sa,
287 sa->sa_len) == HOSTNAME_FOUND)
289 } else if (!isaddr && nflag > 1) {
291 * If a host has only one A/AAAA RR, change a
292 * name into an IP address
294 memset(&hints, 0, sizeof(hints));
295 hints.ai_flags = AI_PASSIVE;
296 hints.ai_family = AF_UNSPEC;
297 hints.ai_socktype = SOCK_STREAM;
298 if (getaddrinfo(p, NULL, &hints, &res) == 0) {
299 if (res->ai_next == NULL &&
300 getnameinfo(res->ai_addr, res->ai_addrlen,
301 fn, sizeof(fn), NULL, 0,
302 NI_NUMERICHOST) == 0)
309 (void)snprintf(buf, sizeof(buf), "%s:%s", p, x_suffix);
312 ep->from = strdup(p);
313 if ((i = strlen(p)) > fromwidth)
316 ep->save_from = strdup(save_p);
320 #define HEADER_USER "USER"
321 #define HEADER_TTY "TTY"
322 #define HEADER_FROM "FROM"
323 #define HEADER_LOGIN_IDLE "LOGIN@ IDLE "
324 #define HEADER_WHAT "WHAT\n"
325 #define WUSED (W_DISPUSERSIZE + W_DISPLINESIZE + fromwidth + \
326 sizeof(HEADER_LOGIN_IDLE) + 3) /* header width incl. spaces */
329 if ((int) sizeof(HEADER_FROM) > fromwidth)
330 fromwidth = sizeof(HEADER_FROM);
332 if (fromwidth > W_MAXHOSTSIZE)
333 fromwidth = W_MAXHOSTSIZE;
335 xo_open_container("uptime-information");
337 if (header || wcmd == 0) {
338 pr_header(&now, nusers);
340 xo_close_container("uptime-information");
347 xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%s}",
348 W_DISPUSERSIZE, W_DISPUSERSIZE, HEADER_USER,
349 W_DISPLINESIZE, W_DISPLINESIZE, HEADER_TTY,
350 fromwidth, fromwidth, HEADER_FROM,
351 HEADER_LOGIN_IDLE HEADER_WHAT);
354 if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL)
355 err(1, "%s", kvm_geterr(kd));
356 for (i = 0; i < nentries; i++, kp++) {
357 if (kp->ki_stat == SIDL || kp->ki_stat == SZOMB ||
358 kp->ki_tdev == NODEV)
360 for (ep = ehead; ep != NULL; ep = ep->next) {
361 if (ep->tdev == kp->ki_tdev) {
363 * proc is associated with this terminal
365 if (ep->kp == NULL && kp->ki_pgid == kp->ki_tpgid) {
367 * Proc is 'most interesting'
369 if (proc_compare(ep->kp, kp))
373 * Proc debug option info; add to debug
374 * list using kinfo_proc ki_spare[0]
375 * as next pointer; ptr to ptr avoids the
376 * ptr = long assumption.
384 if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
385 ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
386 ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
389 ttywidth = ws.ws_col - 1;
390 argwidth = ttywidth - WUSED;
393 for (ep = ehead; ep != NULL; ep = ep->next) {
394 if (ep->kp == NULL) {
395 ep->args = strdup("-");
398 ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth),
399 ep->kp->ki_comm, NULL, MAXCOMLEN);
400 if (ep->args == NULL)
403 /* sort by idle time */
404 if (sortidle && ehead != NULL) {
405 struct entry *from, *save;
409 while (from != NULL) {
411 (*nextp) && from->idle >= (*nextp)->idle;
412 nextp = &(*nextp)->next)
421 xo_open_container("user-table");
422 xo_open_list("user-entry");
424 for (ep = ehead; ep != NULL; ep = ep->next) {
427 xo_open_instance("user-entry");
430 xo_open_container("process-table");
431 xo_open_list("process-entry");
433 for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) {
436 ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth),
437 dkp->ki_comm, NULL, MAXCOMLEN);
440 xo_open_instance("process-entry");
441 xo_emit("\t\t{:process-id/%-9d/%d} "
442 "{:command/%hs}\n", dkp->ki_pid, ptr);
443 xo_close_instance("process-entry");
445 xo_close_list("process-entry");
446 xo_close_container("process-table");
448 xo_emit("{:user/%-*.*s/%@**@s} {:tty/%-*.*s/%@**@s} ",
449 W_DISPUSERSIZE, W_DISPUSERSIZE, ep->utmp.ut_user,
450 W_DISPLINESIZE, W_DISPLINESIZE,
452 (strncmp(ep->utmp.ut_line, "tty", 3) &&
453 strncmp(ep->utmp.ut_line, "cua", 3) ?
454 ep->utmp.ut_line : ep->utmp.ut_line + 3) : "-");
457 xo_attr("address", "%s", ep->save_from);
458 xo_emit("{:from/%-*.*s/%@**@s} ",
459 fromwidth, fromwidth, ep->from);
460 t = ep->utmp.ut_tv.tv_sec;
461 longattime = pr_attime(&t, &now);
462 longidle = pr_idle(ep->idle);
463 xo_emit("{:command/%.*hs/%@*@hs}\n",
464 argwidth - longidle - longattime,
467 xo_close_instance("user-entry");
470 xo_close_list("user-entry");
471 xo_close_container("user-table");
472 xo_close_container("uptime-information");
480 pr_header(time_t *nowp, int nusers)
485 int days, hrs, i, mins, secs;
489 upbuf = sbuf_new_auto();
493 if (strftime(buf, sizeof(buf),
494 use_ampm ? "%l:%M%p" : "%k:%M", localtime(nowp)) != 0)
495 xo_emit("{:time-of-day/%s} ", buf);
497 * Print how long system has been up.
499 if (clock_gettime(CLOCK_UPTIME, &tp) != -1) {
503 days = uptime / 86400;
510 xo_emit("{e:uptime/%lu}", (unsigned long) tp.tv_sec);
511 xo_emit("{e:days/%d}{e:hours/%d}{e:minutes/%d}{e:seconds/%d}", days, hrs, mins, secs);
514 sbuf_printf(upbuf, " %d day%s,",
515 days, days > 1 ? "s" : "");
516 if (hrs > 0 && mins > 0)
517 sbuf_printf(upbuf, " %2d:%02d,", hrs, mins);
519 sbuf_printf(upbuf, " %d hr%s,",
520 hrs, hrs > 1 ? "s" : "");
522 sbuf_printf(upbuf, " %d min%s,",
523 mins, mins > 1 ? "s" : "");
525 sbuf_printf(upbuf, " %d sec%s,",
526 secs, secs > 1 ? "s" : "");
527 if (sbuf_finish(upbuf) != 0)
528 xo_err(1, "Could not generate output");
529 xo_emit("{:uptime-human/%s}", sbuf_data(upbuf));
533 /* Print number of users logged in to system */
534 xo_emit(" {:users/%d} {Np:user,users}", nusers);
537 * Print 1, 5, and 15 minute load averages.
539 if (getloadavg(avenrun, nitems(avenrun)) == -1)
540 xo_emit(", no load average information available\n");
542 static const char *format[] = {
543 " {:load-average-1/%.2f}",
544 " {:load-average-5/%.2f}",
545 " {:load-average-15/%.2f}",
547 xo_emit(", load averages:");
548 for (i = 0; i < (int)(nitems(avenrun)); i++) {
549 if (use_comma && i > 0)
551 xo_emit(format[i], avenrun[i]);
560 static struct stat sb;
561 char ttybuf[MAXPATHLEN];
563 (void)snprintf(ttybuf, sizeof(ttybuf), "%s%s", _PATH_DEV, line);
564 if (stat(ttybuf, &sb) == 0 && S_ISCHR(sb.st_mode)) {
574 xo_error("usage: w [-dhin] [-M core] [-N system] [user ...]\n");
576 xo_error("usage: uptime\n");