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- /*
- * Copyright (c) 1983 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) 1983 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)ruptime.c 5.8 (Berkeley) 7/21/90";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/dir.h>
- #include <sys/file.h>
- #include <sys/errno.h>
- #include <protocols/rwhod.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- size_t nhosts, hspace = 20;
- struct hs {
- struct whod *hs_wd;
- int hs_nusers;
- } *hs;
- struct whod awhod;
-
- #define ISDOWN(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
- #define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we))
-
- time_t now;
- int rflg = 1;
- int hscmp(), ucmp(), lcmp(), tcmp();
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- extern char *optarg;
- extern int optind;
- register struct hs *hsp;
- register struct whod *wd;
- register struct whoent *we;
- register DIR *dirp;
- struct direct *dp;
- int aflg, cc, ch, f, i, maxloadav;
- char buf[sizeof(struct whod)];
- int (*cmp)() = hscmp;
- time_t time();
- char *interval();
-
- aflg = 0;
- while ((ch = getopt(argc, argv, "alrut")) != EOF)
- switch((char)ch) {
- case 'a':
- aflg = 1;
- break;
- case 'l':
- cmp = lcmp;
- break;
- case 'r':
- rflg = -1;
- break;
- case 't':
- cmp = tcmp;
- break;
- case 'u':
- cmp = ucmp;
- break;
- default:
- (void)fprintf(stderr, "usage: ruptime [-alrut]\n");
- exit(1);
- }
-
- if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) {
- (void)fprintf(stderr, "ruptime: %s: %s.\n",
- _PATH_RWHODIR, strerror(errno));
- exit(1);
- }
- morehosts();
- hsp = hs;
- maxloadav = -1;
- while (dp = readdir(dirp)) {
- if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
- continue;
- if ((f = open(dp->d_name, O_RDONLY, 0)) < 0) {
- (void)fprintf(stderr, "ruptime: %s: %s\n",
- dp->d_name, strerror(errno));
- continue;
- }
- cc = read(f, buf, sizeof(struct whod));
- (void)close(f);
- if (cc < WHDRSIZE)
- continue;
- if (nhosts == hspace) {
- morehosts();
- hsp = hs + nhosts;
- }
- /* NOSTRICT */
- hsp->hs_wd = malloc((size_t)WHDRSIZE);
- wd = (struct whod *)buf;
- bcopy((char *)wd, (char *)hsp->hs_wd, (size_t)WHDRSIZE);
- hsp->hs_nusers = 0;
- for (i = 0; i < 2; i++)
- if (wd->wd_loadav[i] > maxloadav)
- maxloadav = wd->wd_loadav[i];
- we = (struct whoent *)(buf+cc);
- while (--we >= wd->wd_we)
- if (aflg || we->we_idle < 3600)
- hsp->hs_nusers++;
- nhosts++;
- hsp++;
- }
- if (!nhosts) {
- (void)printf("ruptime: no hosts in %s.\n", _PATH_RWHODIR);
- exit(1);
- }
- qsort((char *)hs, nhosts, sizeof (hs[0]), cmp);
- (void)time(&now);
- for (i = 0; i < nhosts; i++) {
- hsp = &hs[i];
- if (ISDOWN(hsp)) {
- (void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
- interval(now - hsp->hs_wd->wd_recvtime, "down"));
- continue;
- }
- (void)printf(
- "%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
- hsp->hs_wd->wd_hostname,
- interval((time_t)hsp->hs_wd->wd_sendtime -
- (time_t)hsp->hs_wd->wd_boottime, " up"),
- hsp->hs_nusers,
- hsp->hs_nusers == 1 ? ", " : "s,",
- maxloadav >= 1000 ? 5 : 4,
- hsp->hs_wd->wd_loadav[0] / 100.0,
- maxloadav >= 1000 ? 5 : 4,
- hsp->hs_wd->wd_loadav[1] / 100.0,
- maxloadav >= 1000 ? 5 : 4,
- hsp->hs_wd->wd_loadav[2] / 100.0);
- free((void *)hsp->hs_wd);
- }
- exit(0);
- }
-
- char *
- interval(tval, updown)
- time_t tval;
- char *updown;
- {
- static char resbuf[32];
- int days, hours, minutes;
-
- if (tval < 0 || tval > 365*24*60*60) {
- (void)sprintf(resbuf, " %s ??:??", updown);
- return(resbuf);
- }
- minutes = (tval + 59) / 60; /* round to minutes */
- hours = minutes / 60; minutes %= 60;
- days = hours / 24; hours %= 24;
- if (days)
- (void)sprintf(resbuf, "%s %2d+%02d:%02d",
- updown, days, hours, minutes);
- else
- (void)sprintf(resbuf, "%s %2d:%02d",
- updown, hours, minutes);
- return(resbuf);
- }
-
- /* alphabetical comparison */
- hscmp(a1, a2)
- void *a1, *a2;
- {
- struct hs *h1 = a1, *h2 = a2;
-
- return(rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname));
- }
-
- /* load average comparison */
- lcmp(a1, a2)
- void *a1, *a2;
- {
- register struct hs *h1 = a1, *h2 = a2;
-
- if (ISDOWN(h1))
- if (ISDOWN(h2))
- return(tcmp(a1, a2));
- else
- return(rflg);
- else if (ISDOWN(h2))
- return(-rflg);
- else
- return(rflg *
- (h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0]));
- }
-
- /* number of users comparison */
- ucmp(a1, a2)
- void *a1, *a2;
- {
- register struct hs *h1 = a1, *h2 = a2;
-
- if (ISDOWN(h1))
- if (ISDOWN(h2))
- return(tcmp(a1, a2));
- else
- return(rflg);
- else if (ISDOWN(h2))
- return(-rflg);
- else
- return(rflg * (h2->hs_nusers - h1->hs_nusers));
- }
-
- /* uptime comparison */
- tcmp(a1, a2)
- void *a1, *a2;
- {
- register struct hs *h1 = a1, *h2 = a2;
-
- return(rflg * (
- (ISDOWN(h2) ? h2->hs_wd->wd_recvtime - now
- : h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime)
- -
- (ISDOWN(h1) ? h1->hs_wd->wd_recvtime - now
- : h1->hs_wd->wd_sendtime - h1->hs_wd->wd_boottime)
- ));
- }
-
- morehosts()
- {
- hs = realloc((char *)hs, (hspace *= 2) * sizeof(*hs));
- if (hs == NULL) {
- (void)fprintf(stderr, "ruptime: %s.\n", strerror(ENOMEM));
- exit(1);
- }
- }
-