diff --git a/usr.bin/w/w.c b/usr.bin/w/w.c index 45e624c29460..8c33cd9d35b2 100644 --- a/usr.bin/w/w.c +++ b/usr.bin/w/w.c @@ -1,590 +1,591 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1980, 1991, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif #ifndef lint static const char sccsid[] = "@(#)w.c 8.4 (Berkeley) 4/16/94"; #endif /* * w - print system status (who and what) * * This program is similar to the systat command on Tenex/Tops 10/20 * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include -#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "extern.h" static struct utmpx *utmp; static struct winsize ws; static kvm_t *kd; static time_t now; /* the current time of day */ static size_t ttywidth; /* width of tty */ static size_t fromwidth = 0; /* max width of "from" field */ static size_t argwidth; /* width of arguments */ static int header = 1; /* true if -h flag: don't print heading */ static int nflag; /* true if -n flag: don't convert addrs */ static int dflag; /* true if -d flag: output debug info */ static int sortidle; /* sort by idle time */ int use_ampm; /* use AM/PM time */ static int use_comma; /* use comma as floats separator */ static char **sel_users; /* login array of particular users selected */ /* * One of these per active utmp entry. */ static struct entry { struct entry *next; struct utmpx utmp; dev_t tdev; /* dev_t of terminal */ time_t idle; /* idle time of terminal in seconds */ struct kinfo_proc *kp; /* `most interesting' proc */ char *args; /* arg list of interesting process */ struct kinfo_proc *dkp; /* debug option proc list */ char *from; /* "from": name or addr */ char *save_from; /* original "from": name or addr */ } *ep, *ehead = NULL, **nextp = &ehead; #define debugproc(p) *(&((struct kinfo_proc *)p)->ki_udata) #define W_DISPUSERSIZE 10 #define W_DISPLINESIZE 8 #define W_MAXHOSTSIZE 40 static void pr_header(time_t *, int); static struct stat *ttystat(char *); static void usage(int); char *fmt_argv(char **, char *, char *, size_t); /* ../../bin/ps/fmt.c */ int main(int argc, char *argv[]) { struct kinfo_proc *kp; struct kinfo_proc *dkp; struct stat *stp; time_t touched; size_t width; int ch, i, nentries, nusers, wcmd, longidle, longattime; const char *memf, *nlistf, *p, *save_p; char *x_suffix; char errbuf[_POSIX2_LINE_MAX]; char buf[MAXHOSTNAMELEN], fn[MAXHOSTNAMELEN]; char *dot; (void)setlocale(LC_ALL, ""); use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0'); use_comma = (*nl_langinfo(RADIXCHAR) != ','); argc = xo_parse_args(argc, argv); if (argc < 0) exit(1); /* Are we w(1) or uptime(1)? */ if (strcmp(basename(argv[0]), "uptime") == 0) { wcmd = 0; p = ""; } else { wcmd = 1; p = "dhiflM:N:nsuw"; } memf = _PATH_DEVNULL; nlistf = NULL; while ((ch = getopt(argc, argv, p)) != -1) switch (ch) { case 'd': dflag = 1; break; case 'h': header = 0; break; case 'i': sortidle = 1; break; case 'M': header = 0; memf = optarg; break; case 'N': nlistf = optarg; break; case 'n': nflag += 1; break; case 'f': case 'l': case 's': case 'u': case 'w': - warnx("-%c no longer supported", ch); + xo_warnx("-%c no longer supported", ch); /* FALLTHROUGH */ case '?': default: usage(wcmd); } argc -= optind; argv += optind; if (!(_res.options & RES_INIT)) res_init(); _res.retrans = 2; /* resolver timeout to 2 seconds per try */ _res.retry = 1; /* only try once.. */ if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL) - errx(1, "%s", errbuf); + xo_errx(1, "%s", errbuf); (void)time(&now); if (*argv) sel_users = argv; setutxent(); for (nusers = 0; (utmp = getutxent()) != NULL;) { struct addrinfo hints, *res; struct sockaddr_storage ss; struct sockaddr *sa = (struct sockaddr *)&ss; struct sockaddr_in *lsin = (struct sockaddr_in *)&ss; struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)&ss; int isaddr; if (utmp->ut_type != USER_PROCESS) continue; if (!(stp = ttystat(utmp->ut_line))) continue; /* corrupted record */ ++nusers; if (wcmd == 0) continue; if (sel_users) { int usermatch; char **user; usermatch = 0; for (user = sel_users; !usermatch && *user; user++) if (!strcmp(utmp->ut_user, *user)) usermatch = 1; if (!usermatch) continue; } if ((ep = calloc(1, sizeof(struct entry))) == NULL) - errx(1, "calloc"); + xo_errx(1, "calloc"); *nextp = ep; nextp = &ep->next; memmove(&ep->utmp, utmp, sizeof *utmp); ep->tdev = stp->st_rdev; /* * If this is the console device, attempt to ascertain * the true console device dev_t. */ if (ep->tdev == 0) { size_t size; size = sizeof(dev_t); (void)sysctlbyname("machdep.consdev", &ep->tdev, &size, NULL, 0); } touched = stp->st_atime; if (touched < ep->utmp.ut_tv.tv_sec) { /* tty untouched since before login */ touched = ep->utmp.ut_tv.tv_sec; } if ((ep->idle = now - touched) < 0) ep->idle = 0; save_p = p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-"; if ((x_suffix = strrchr(p, ':')) != NULL) { if ((dot = strchr(x_suffix, '.')) != NULL && strchr(dot+1, '.') == NULL) *x_suffix++ = '\0'; else x_suffix = NULL; } isaddr = 0; memset(&ss, '\0', sizeof(ss)); if (inet_pton(AF_INET6, p, &lsin6->sin6_addr) == 1) { lsin6->sin6_len = sizeof(*lsin6); lsin6->sin6_family = AF_INET6; isaddr = 1; } else if (inet_pton(AF_INET, p, &lsin->sin_addr) == 1) { lsin->sin_len = sizeof(*lsin); lsin->sin_family = AF_INET; isaddr = 1; } if (nflag == 0) { /* Attempt to change an IP address into a name */ if (isaddr && realhostname_sa(fn, sizeof(fn), sa, sa->sa_len) == HOSTNAME_FOUND) p = fn; } else if (!isaddr && nflag > 1) { /* * If a host has only one A/AAAA RR, change a * name into an IP address */ memset(&hints, 0, sizeof(hints)); hints.ai_flags = AI_PASSIVE; hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; if (getaddrinfo(p, NULL, &hints, &res) == 0) { if (res->ai_next == NULL && getnameinfo(res->ai_addr, res->ai_addrlen, fn, sizeof(fn), NULL, 0, NI_NUMERICHOST) == 0) p = fn; freeaddrinfo(res); } } if (x_suffix) { (void)snprintf(buf, sizeof(buf), "%s:%s", p, x_suffix); p = buf; } ep->from = strdup(p); if ((width = strlen(p)) > fromwidth) fromwidth = width; if (save_p != p) ep->save_from = strdup(save_p); } endutxent(); #define HEADER_USER "USER" #define HEADER_TTY "TTY" #define HEADER_FROM "FROM" #define HEADER_LOGIN_IDLE "LOGIN@ IDLE " #define HEADER_WHAT "WHAT\n" #define WUSED (W_DISPUSERSIZE + W_DISPLINESIZE + fromwidth + \ sizeof(HEADER_LOGIN_IDLE) + 3) /* header width incl. spaces */ if (sizeof(HEADER_FROM) > fromwidth) fromwidth = sizeof(HEADER_FROM); fromwidth++; if (fromwidth > W_MAXHOSTSIZE) fromwidth = W_MAXHOSTSIZE; xo_open_container("uptime-information"); if (header || wcmd == 0) { pr_header(&now, nusers); if (wcmd == 0) { xo_close_container("uptime-information"); - xo_finish(); + if (xo_finish() < 0) + xo_err(1, "stdout"); (void)kvm_close(kd); exit(0); } xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%s}", W_DISPUSERSIZE, W_DISPUSERSIZE, HEADER_USER, W_DISPLINESIZE, W_DISPLINESIZE, HEADER_TTY, fromwidth, fromwidth, HEADER_FROM, HEADER_LOGIN_IDLE HEADER_WHAT); } if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL) - err(1, "%s", kvm_geterr(kd)); + xo_err(1, "%s", kvm_geterr(kd)); for (i = 0; i < nentries; i++, kp++) { if (kp->ki_stat == SIDL || kp->ki_stat == SZOMB || kp->ki_tdev == NODEV) continue; for (ep = ehead; ep != NULL; ep = ep->next) { if (ep->tdev == kp->ki_tdev) { /* * proc is associated with this terminal */ if (ep->kp == NULL && kp->ki_pgid == kp->ki_tpgid) { /* * Proc is 'most interesting' */ if (proc_compare(ep->kp, kp)) ep->kp = kp; } /* * Proc debug option info; add to debug * list using kinfo_proc ki_spare[0] * as next pointer; ptr to ptr avoids the * ptr = long assumption. */ dkp = ep->dkp; ep->dkp = kp; debugproc(kp) = dkp; } } } if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 && ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 && ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0) ttywidth = 79; else ttywidth = ws.ws_col - 1; argwidth = ttywidth - WUSED; if (argwidth < 4) argwidth = 8; /* Don't truncate if we're outputting json or XML. */ if (xo_get_style(NULL) != XO_STYLE_TEXT) argwidth = ARG_MAX; for (ep = ehead; ep != NULL; ep = ep->next) { if (ep->kp == NULL) { ep->args = strdup("-"); continue; } ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth), ep->kp->ki_comm, NULL, MAXCOMLEN); if (ep->args == NULL) - err(1, NULL); + xo_err(1, NULL); } /* sort by idle time */ if (sortidle && ehead != NULL) { struct entry *from, *save; from = ehead; ehead = NULL; while (from != NULL) { for (nextp = &ehead; (*nextp) && from->idle >= (*nextp)->idle; nextp = &(*nextp)->next) continue; save = from; from = from->next; save->next = *nextp; *nextp = save; } } xo_open_container("user-table"); xo_open_list("user-entry"); for (ep = ehead; ep != NULL; ep = ep->next) { time_t t; xo_open_instance("user-entry"); if (dflag) { xo_open_container("process-table"); xo_open_list("process-entry"); for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) { const char *ptr; ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth), dkp->ki_comm, NULL, MAXCOMLEN); if (ptr == NULL) ptr = "-"; xo_open_instance("process-entry"); xo_emit("\t\t{:process-id/%-9d/%d} " "{:command/%hs}\n", dkp->ki_pid, ptr); xo_close_instance("process-entry"); } xo_close_list("process-entry"); xo_close_container("process-table"); } xo_emit("{:user/%-*.*s/%@**@s} {:tty/%-*.*s/%@**@s} ", W_DISPUSERSIZE, W_DISPUSERSIZE, ep->utmp.ut_user, W_DISPLINESIZE, W_DISPLINESIZE, *ep->utmp.ut_line ? (strncmp(ep->utmp.ut_line, "tty", 3) && strncmp(ep->utmp.ut_line, "cua", 3) ? ep->utmp.ut_line : ep->utmp.ut_line + 3) : "-"); if (ep->save_from) xo_attr("address", "%s", ep->save_from); xo_emit("{:from/%-*.*s/%@**@s} ", (int)fromwidth, (int)fromwidth, ep->from); t = ep->utmp.ut_tv.tv_sec; longattime = pr_attime(&t, &now); longidle = pr_idle(ep->idle); xo_emit("{:command/%.*hs/%@*@hs}\n", (int)argwidth - longidle - longattime, ep->args); xo_close_instance("user-entry"); } xo_close_list("user-entry"); xo_close_container("user-table"); xo_close_container("uptime-information"); - xo_finish(); + if (xo_finish() < 0) + xo_err(1, "stdout"); (void)kvm_close(kd); exit(0); } static void pr_header(time_t *nowp, int nusers) { char buf[64]; struct sbuf upbuf; double avenrun[3]; struct timespec tp; unsigned long days, hrs, mins, secs; unsigned int i; /* * Print time of day. */ if (strftime(buf, sizeof(buf), use_ampm ? "%l:%M%p" : "%k:%M", localtime(nowp)) != 0) xo_emit("{:time-of-day/%s} ", buf); /* * Print how long system has been up. */ (void)sbuf_new(&upbuf, buf, sizeof(buf), SBUF_FIXEDLEN); if (clock_gettime(CLOCK_UPTIME, &tp) != -1) { xo_emit(" up"); secs = tp.tv_sec; xo_emit("{e:uptime/%lu}", secs); mins = secs / 60; secs %= 60; hrs = mins / 60; mins %= 60; days = hrs / 24; hrs %= 24; xo_emit("{e:days/%ld}{e:hours/%ld}{e:minutes/%ld}{e:seconds/%ld}", days, hrs, mins, secs); /* If we've been up longer than 60 s, round to nearest min */ if (tp.tv_sec > 60) { secs = tp.tv_sec + 30; mins = secs / 60; secs = 0; hrs = mins / 60; mins %= 60; days = hrs / 24; hrs %= 24; } if (days > 0) sbuf_printf(&upbuf, " %ld day%s,", days, days > 1 ? "s" : ""); if (hrs > 0 && mins > 0) sbuf_printf(&upbuf, " %2ld:%02ld,", hrs, mins); else if (hrs > 0) sbuf_printf(&upbuf, " %ld hr%s,", hrs, hrs > 1 ? "s" : ""); else if (mins > 0) sbuf_printf(&upbuf, " %ld min%s,", mins, mins > 1 ? "s" : ""); else sbuf_printf(&upbuf, " %ld sec%s,", secs, secs > 1 ? "s" : ""); if (sbuf_finish(&upbuf) != 0) xo_err(1, "Could not generate output"); xo_emit("{:uptime-human/%s}", sbuf_data(&upbuf)); sbuf_delete(&upbuf); } /* Print number of users logged in to system */ xo_emit(" {:users/%d} {Np:user,users}", nusers); /* * Print 1, 5, and 15 minute load averages. */ if (getloadavg(avenrun, nitems(avenrun)) == -1) xo_emit(", no load average information available\n"); else { static const char *format[] = { " {:load-average-1/%.2f}", " {:load-average-5/%.2f}", " {:load-average-15/%.2f}", }; xo_emit(", load averages:"); for (i = 0; i < nitems(avenrun); i++) { if (use_comma && i > 0) xo_emit(","); xo_emit(format[i], avenrun[i]); } xo_emit("\n"); } } static struct stat * ttystat(char *line) { static struct stat sb; char ttybuf[MAXPATHLEN]; (void)snprintf(ttybuf, sizeof(ttybuf), "%s%s", _PATH_DEV, line); if (stat(ttybuf, &sb) == 0 && S_ISCHR(sb.st_mode)) return (&sb); return (NULL); } static void usage(int wcmd) { if (wcmd) xo_error("usage: w [-dhin] [-M core] [-N system] [user ...]\n"); else xo_error("usage: uptime\n"); xo_finish(); exit(1); }