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- /*-
- * Copyright (c) 1980, 1991 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)w.c 5.29 (Berkeley) 4/23/91";
- #endif /* not lint */
-
- /*
- * w - print system status (who and what)
- *
- * This program is similar to the systat command on Tenex/Tops 10/20
- *
- */
- #include <sys/param.h>
- #include <utmp.h>
- #include <sys/time.h>
- #include <sys/stat.h>
- #include <sys/proc.h>
- #include <sys/user.h>
- #include <sys/ioctl.h>
- #include <sys/tty.h>
- #include <nlist.h>
- #include <kvm.h>
- #include <ctype.h>
- #include <paths.h>
- #include <string.h>
- #include <stdio.h>
-
- #ifdef SPPWAIT
- #define NEWVM
- #endif
- #ifndef NEWVM
- #include <machine/pte.h>
- #include <sys/vm.h>
- #endif
-
- char *program;
- int ttywidth; /* width of tty */
- int argwidth; /* width of tty */
- int header = 1; /* true if -h flag: don't print heading */
- int wcmd = 1; /* true if this is w(1), and not uptime(1) */
- int nusers; /* number of users logged in now */
- char * sel_user; /* login of particular user selected */
- time_t now; /* the current time of day */
- struct timeval boottime;
- time_t uptime; /* time of last reboot & elapsed time since */
- struct utmp utmp;
- struct winsize ws;
- int sortidle; /* sort bu idle time */
-
-
- /*
- * One of these per active utmp entry.
- */
- struct entry {
- struct entry *next;
- struct utmp utmp;
- dev_t tdev; /* dev_t of terminal */
- int idle; /* idle time of terminal in minutes */
- struct proc *proc; /* list of procs in foreground */
- char *args; /* arg list of interesting process */
- } *ep, *ehead = NULL, **nextp = &ehead;
-
- struct nlist nl[] = {
- { "_boottime" },
- #define X_BOOTTIME 0
- #if defined(hp300)
- { "_cn_tty" },
- #define X_CNTTY 1
- #endif
- { "" },
- };
-
- #define USAGE "[ -hi ] [ user ]"
- #define usage() fprintf(stderr, "usage: %s: %s\n", program, USAGE)
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- register int i;
- struct winsize win;
- register struct proc *p;
- struct eproc *e;
- struct stat *stp, *ttystat();
- FILE *ut;
- char *cp;
- int ch;
- extern char *optarg;
- extern int optind;
- char *attime();
-
- program = argv[0];
- /*
- * are we w(1) or uptime(1)
- */
- if ((cp = rindex(program, '/')) || *(cp = program) == '-')
- cp++;
- if (*cp == 'u')
- wcmd = 0;
-
- while ((ch = getopt(argc, argv, "hiflsuw")) != EOF)
- switch((char)ch) {
- case 'h':
- header = 0;
- break;
- case 'i':
- sortidle++;
- break;
- case 'f': case 'l': case 's': case 'u': case 'w':
- error("[-flsuw] no longer supported");
- usage();
- exit(1);
- case '?':
- default:
- usage();
- exit(1);
- }
- argc -= optind;
- argv += optind;
-
- if (*argv)
- sel_user = *argv;
-
- if (header && kvm_nlist(nl) != 0) {
- error("can't get namelist");
- exit (1);
- }
- time(&now);
- ut = fopen(_PATH_UTMP, "r");
- while (fread(&utmp, sizeof(utmp), 1, ut)) {
- if (utmp.ut_name[0] == '\0')
- continue;
- nusers++;
- if (wcmd == 0 || (sel_user &&
- strncmp(utmp.ut_name, sel_user, UT_NAMESIZE) != 0))
- continue;
- if ((ep = (struct entry *)
- calloc(1, sizeof (struct entry))) == NULL) {
- error("out of memory");
- exit(1);
- }
- *nextp = ep;
- nextp = &(ep->next);
- bcopy(&utmp, &(ep->utmp), sizeof (struct utmp));
- stp = ttystat(ep->utmp.ut_line);
- ep->tdev = stp->st_rdev;
- #if defined(hp300)
- /*
- * XXX If this is the console device, attempt to ascertain
- * the true console device dev_t.
- */
- if (ep->tdev == 0) {
- static dev_t cn_dev;
-
- if (nl[X_CNTTY].n_value) {
- struct tty cn_tty, *cn_ttyp;
-
- if (kvm_read((void *)nl[X_CNTTY].n_value,
- &cn_ttyp, sizeof(cn_ttyp)) > 0) {
- (void)kvm_read(cn_ttyp, &cn_tty,
- sizeof (cn_tty));
- cn_dev = cn_tty.t_dev;
- }
- nl[X_CNTTY].n_value = 0;
- }
- ep->tdev = cn_dev;
- }
- #endif
- ep->idle = ((now - stp->st_atime) + 30) / 60; /* secs->mins */
- if (ep->idle < 0)
- ep->idle = 0;
- }
- fclose(ut);
-
- if (header || wcmd == 0) {
- double avenrun[3];
- int days, hrs, mins;
-
- /*
- * Print time of day
- */
- fputs(attime(&now), stdout);
- /*
- * Print how long system has been up.
- * (Found by looking for "boottime" in kernel)
- */
- (void)kvm_read((void *)nl[X_BOOTTIME].n_value, &boottime,
- sizeof (boottime));
- uptime = now - boottime.tv_sec;
- uptime += 30;
- days = uptime / (60*60*24);
- uptime %= (60*60*24);
- hrs = uptime / (60*60);
- uptime %= (60*60);
- mins = uptime / 60;
-
- printf(" up");
- if (days > 0)
- printf(" %d day%s,", days, days>1?"s":"");
- if (hrs > 0 && mins > 0) {
- printf(" %2d:%02d,", hrs, mins);
- } else {
- if (hrs > 0)
- printf(" %d hr%s,", hrs, hrs>1?"s":"");
- if (mins > 0)
- printf(" %d min%s,", mins, mins>1?"s":"");
- }
-
- /* Print number of users logged in to system */
- printf(" %d user%s", nusers, nusers>1?"s":"");
-
- /*
- * Print 1, 5, and 15 minute load averages.
- */
- printf(", load average:");
- (void)getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
- for (i = 0; i < (sizeof(avenrun)/sizeof(avenrun[0])); i++) {
- if (i > 0)
- printf(",");
- printf(" %.2f", avenrun[i]);
- }
- printf("\n");
- if (wcmd == 0) /* if uptime(1) then done */
- exit(0);
- #define HEADER "USER TTY FROM LOGIN@ IDLE WHAT\n"
- #define WUSED (sizeof (HEADER) - sizeof ("WHAT\n"))
- printf(HEADER);
- }
-
- while ((p = kvm_nextproc()) != NULL) {
- if (p->p_stat == SZOMB || (p->p_flag & SCTTY) == 0)
- continue;
- e = kvm_geteproc(p);
- for (ep = ehead; ep != NULL; ep = ep->next) {
- if (ep->tdev == e->e_tdev && e->e_pgid == e->e_tpgid) {
- /*
- * Proc is in foreground of this terminal
- */
- if (proc_compare(ep->proc, p))
- ep->proc = p;
- break;
- }
- }
- }
- if ((ioctl(1, TIOCGWINSZ, &ws) == -1 &&
- ioctl(2, TIOCGWINSZ, &ws) == -1 &&
- ioctl(0, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
- ttywidth = 79;
- else
- ttywidth = ws.ws_col - 1;
- argwidth = ttywidth - WUSED;
- if (argwidth < 4)
- argwidth = 8;
- for (ep = ehead; ep != NULL; ep = ep->next) {
- ep->args = strdup(kvm_getargs(ep->proc, kvm_getu(ep->proc)));
- if (ep->args == NULL) {
- error("out of memory");
- exit(1);
- }
- }
- /* sort by idle time */
- if (sortidle && ehead != NULL) {
- struct entry *from = ehead, *save;
-
- ehead = NULL;
- while (from != NULL) {
- for (nextp = &ehead;
- (*nextp) && from->idle >= (*nextp)->idle;
- nextp = &(*nextp)->next)
- ;
- save = from;
- from = from->next;
- save->next = *nextp;
- *nextp = save;
- }
- }
-
- for (ep = ehead; ep != NULL; ep = ep->next) {
- printf("%-*.*s %-2.2s %-*.*s %s",
- UT_NAMESIZE, UT_NAMESIZE, ep->utmp.ut_name,
- strncmp(ep->utmp.ut_line, "tty", 3) == 0 ?
- ep->utmp.ut_line+3 : ep->utmp.ut_line,
- UT_HOSTSIZE, UT_HOSTSIZE, *ep->utmp.ut_host ?
- ep->utmp.ut_host : "-",
- attime(&ep->utmp.ut_time));
- if (ep->idle >= 36 * 60)
- printf(" %ddays ", (ep->idle + 12 * 60) / (24 * 60));
- else
- prttime(ep->idle, " ");
- printf("%.*s\n", argwidth, ep->args);
- }
- exit(0);
- }
-
- struct stat *
- ttystat(line)
- {
- static struct stat statbuf;
- char ttybuf[sizeof (_PATH_DEV) + UT_LINESIZE + 1];
-
- sprintf(ttybuf, "%s/%.*s", _PATH_DEV, UT_LINESIZE, line);
- (void) stat(ttybuf, &statbuf);
-
- return (&statbuf);
- }
-
- /*
- * prttime prints a time in hours and minutes or minutes and seconds.
- * The character string tail is printed at the end, obvious
- * strings to pass are "", " ", or "am".
- */
- prttime(tim, tail)
- time_t tim;
- char *tail;
- {
-
- if (tim >= 60) {
- printf(" %2d:", tim/60);
- tim %= 60;
- printf("%02d", tim);
- } else if (tim >= 0)
- printf(" %2d", tim);
- printf("%s", tail);
- }
-
- #include <varargs.h>
-
- error(va_alist)
- va_dcl
- {
- char *fmt;
- va_list ap;
-
- fprintf(stderr, "%s: ", program);
- va_start(ap);
- fmt = va_arg(ap, char *);
- (void) vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "\n");
- }
-