370 lines
9.3 KiB
C
370 lines
9.3 KiB
C
/*-
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* Copyright (c) 1980, 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)w.c 5.29 (Berkeley) 4/23/91";*/
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static char rcsid[] = "$Id: w.c,v 1.9 1993/10/26 20:52:51 mycroft Exp $";
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#endif /* not lint */
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/*
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* w - print system status (who and what)
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*
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* This program is similar to the systat command on Tenex/Tops 10/20
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*
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*/
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#include <sys/param.h>
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#include <utmp.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <ctype.h>
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#include <paths.h>
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#include <string.h>
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#include <stdio.h>
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#include <vis.h>
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#ifdef SPPWAIT
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#define NEWVM
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#endif
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#ifndef NEWVM
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#include <machine/pte.h>
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#include <sys/vm.h>
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#endif
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char *program;
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int ttywidth; /* width of tty */
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int argwidth; /* width of tty */
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int header = 1; /* true if -h flag: don't print heading */
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int wcmd = 1; /* true if this is w(1), and not uptime(1) */
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int nusers; /* number of users logged in now */
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char * sel_user; /* login of particular user selected */
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time_t now; /* the current time of day */
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struct timeval boottime;
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time_t uptime; /* time of last reboot & elapsed time since */
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struct utmp utmp;
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struct winsize ws;
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int sortidle; /* sort bu idle time */
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/*
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* One of these per active utmp entry.
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*/
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struct entry {
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struct entry *next;
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struct utmp utmp;
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dev_t tdev; /* dev_t of terminal */
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int idle; /* idle time of terminal in minutes */
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struct proc *proc; /* list of procs in foreground */
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char *args; /* arg list of interesting process */
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} *ep, *ehead = NULL, **nextp = &ehead;
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struct nlist nl[] = {
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{ "_boottime" },
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#define X_BOOTTIME 0
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{ "" },
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};
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#define USAGE "[ -hi ] [ user ]"
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#define usage() fprintf(stderr, "usage: %s: %s\n", program, USAGE)
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main(argc, argv)
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int argc;
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char **argv;
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{
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register int i;
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struct winsize win;
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register struct proc *p;
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struct eproc *e;
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struct stat *stp, *ttystat();
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FILE *ut;
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char *cp;
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char *vis_args;
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int ch;
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extern char *optarg;
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extern int optind;
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char *attime();
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program = argv[0];
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/*
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* are we w(1) or uptime(1)
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*/
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if ((cp = rindex(program, '/')) || *(cp = program) == '-')
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cp++;
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if (*cp == 'u')
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wcmd = 0;
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while ((ch = getopt(argc, argv, "hiflsuw")) != EOF)
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switch((char)ch) {
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case 'h':
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header = 0;
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break;
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case 'i':
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sortidle++;
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break;
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case 'f': case 'l': case 's': case 'u': case 'w':
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error("[-flsuw] no longer supported");
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usage();
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exit(1);
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case '?':
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default:
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usage();
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exit(1);
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}
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argc -= optind;
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argv += optind;
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if (*argv)
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sel_user = *argv;
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if (header && kvm_nlist(nl) != 0) {
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error("can't get namelist");
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exit (1);
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}
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time(&now);
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ut = fopen(_PATH_UTMP, "r");
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while (fread(&utmp, sizeof(utmp), 1, ut)) {
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if (utmp.ut_name[0] == '\0')
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continue;
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nusers++;
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if (wcmd == 0 || (sel_user &&
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strncmp(utmp.ut_name, sel_user, UT_NAMESIZE) != 0))
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continue;
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if ((ep = (struct entry *)
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calloc(1, sizeof (struct entry))) == NULL) {
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error("out of memory");
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exit(1);
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}
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*nextp = ep;
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nextp = &(ep->next);
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bcopy(&utmp, &(ep->utmp), sizeof (struct utmp));
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stp = ttystat(ep->utmp.ut_line);
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ep->tdev = stp->st_rdev;
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ep->idle = ((now - stp->st_atime) + 30) / 60; /* secs->mins */
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if (ep->idle < 0)
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ep->idle = 0;
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}
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fclose(ut);
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if (header || wcmd == 0) {
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double avenrun[3];
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int days, hrs, mins;
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/*
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* Print time of day
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*/
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fputs(attime(&now), stdout);
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/*
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* Print how long system has been up.
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* (Found by looking for "boottime" in kernel)
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*/
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(void)kvm_read((void *)nl[X_BOOTTIME].n_value, &boottime,
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sizeof (boottime));
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uptime = now - boottime.tv_sec;
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uptime += 30;
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days = uptime / (60*60*24);
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uptime %= (60*60*24);
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hrs = uptime / (60*60);
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uptime %= (60*60);
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mins = uptime / 60;
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printf(" up");
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if (days > 0)
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printf(" %d day%s,", days, days>1?"s":"");
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if (hrs > 0 && mins > 0) {
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printf(" %2d:%02d,", hrs, mins);
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} else {
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if (hrs > 0)
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printf(" %d hr%s,", hrs, hrs>1?"s":"");
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if (mins > 0)
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printf(" %d min%s,", mins, mins>1?"s":"");
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}
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/* Print number of users logged in to system */
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printf(" %d user%s", nusers, nusers>1?"s":"");
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/*
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* Print 1, 5, and 15 minute load averages.
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*/
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printf(", load average:");
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(void)getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
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for (i = 0; i < (sizeof(avenrun)/sizeof(avenrun[0])); i++) {
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if (i > 0)
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printf(",");
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printf(" %.2f", avenrun[i]);
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}
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printf("\n");
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if (wcmd == 0) /* if uptime(1) then done */
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exit(0);
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#define HEADER "USER TTY FROM LOGIN@ IDLE WHAT\n"
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#define WUSED (sizeof (HEADER) - sizeof ("WHAT\n"))
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printf(HEADER);
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}
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while ((p = kvm_nextproc()) != NULL) {
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if (p->p_stat == SZOMB || (p->p_flag & SCTTY) == 0)
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continue;
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e = kvm_geteproc(p);
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for (ep = ehead; ep != NULL; ep = ep->next) {
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if (ep->tdev == e->e_tdev && e->e_pgid == e->e_tpgid) {
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/*
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* Proc is in foreground of this terminal
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*/
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if (proc_compare(ep->proc, p))
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ep->proc = p;
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break;
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}
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}
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}
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if ((ioctl(1, TIOCGWINSZ, &ws) == -1 &&
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ioctl(2, TIOCGWINSZ, &ws) == -1 &&
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ioctl(0, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
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ttywidth = 79;
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else
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ttywidth = ws.ws_col - 1;
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argwidth = ttywidth - WUSED;
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if (argwidth < 4)
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argwidth = 8;
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for (ep = ehead; ep != NULL; ep = ep->next) {
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if (!ep->proc) {
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ep->args = NULL;
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continue;
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}
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ep->args = strdup(kvm_getargs(ep->proc, kvm_getu(ep->proc)));
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if (ep->args == NULL) {
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error("out of memory");
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exit(1);
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}
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}
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/* sort by idle time */
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if (sortidle && ehead != NULL) {
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struct entry *from = ehead, *save;
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ehead = NULL;
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while (from != NULL) {
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for (nextp = &ehead;
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(*nextp) && from->idle >= (*nextp)->idle;
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nextp = &(*nextp)->next)
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;
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save = from;
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from = from->next;
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save->next = *nextp;
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*nextp = save;
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}
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}
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if ((vis_args = (char *)malloc(argwidth * 4 + 1)) == NULL) {
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error("out of memory");
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exit(1);
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}
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for (ep = ehead; ep != NULL; ep = ep->next) {
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printf("%-*.*s %-2.2s %-*.*s %s",
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UT_NAMESIZE, UT_NAMESIZE, ep->utmp.ut_name,
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strncmp(ep->utmp.ut_line, "tty", 3) == 0 ?
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ep->utmp.ut_line+3 : ep->utmp.ut_line,
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UT_HOSTSIZE, UT_HOSTSIZE, *ep->utmp.ut_host ?
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ep->utmp.ut_host : "-",
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attime(&ep->utmp.ut_time));
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if (ep->idle >= 36 * 60)
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printf(" %ddays ", (ep->idle + 12 * 60) / (24 * 60));
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else if (ep->idle == 0)
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printf(" - ");
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else
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prttime(ep->idle, " ");
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if (ep->args)
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strvisx(vis_args, ep->args,
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(strlen(ep->args) > argwidth) ?
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argwidth : strlen(ep->args),
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VIS_TAB|VIS_NL|VIS_NOSLASH);
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printf("%.*s\n", argwidth, ep->args ? vis_args : "-");
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}
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free(vis_args);
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exit(0);
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}
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struct stat *
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ttystat(line)
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{
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static struct stat statbuf;
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char ttybuf[sizeof (_PATH_DEV) + UT_LINESIZE + 1];
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sprintf(ttybuf, "%s/%.*s", _PATH_DEV, UT_LINESIZE, line);
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(void) stat(ttybuf, &statbuf);
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return (&statbuf);
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}
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/*
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* prttime prints a time in hours and minutes or minutes and seconds.
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* The character string tail is printed at the end, obvious
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* strings to pass are "", " ", or "am".
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*/
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prttime(tim, tail)
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time_t tim;
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char *tail;
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{
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if (tim >= 60)
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printf(" %2d:%02d", tim/60, tim%60);
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else if (tim >= 0)
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printf(" %2d", tim);
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printf("%s", tail);
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}
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#include <varargs.h>
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error(va_alist)
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va_dcl
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{
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char *fmt;
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va_list ap;
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fprintf(stderr, "%s: ", program);
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va_start(ap);
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fmt = va_arg(ap, char *);
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(void) vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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}
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