/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
+ * 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 Regents of the University of California.\n\
+"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
All rights reserved.\n";
-#endif not lint
+#endif /* not lint */
#ifndef lint
-static char sccsid[] = "@(#)ruptime.c 5.5 (Berkeley) %G%";
-#endif not lint
+static char sccsid[] = "@(#)ruptime.c 5.8 (Berkeley) 7/21/90";
+#endif /* not lint */
#include <sys/param.h>
-#include <stdio.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>
-DIR *dirp;
-
-#define NHOSTS 100
-int nhosts;
-struct hs {
+size_t nhosts, hspace = 20;
+struct hs {
struct whod *hs_wd;
int hs_nusers;
-} hs[NHOSTS];
+} *hs;
struct whod awhod;
-int hscmp(), ucmp(), lcmp(), tcmp();
+#define ISDOWN(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
#define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we))
-#define RWHODIR "/usr/spool/rwho"
-
-char *interval();
-int now;
-char *malloc();
-int aflg;
-int rflg = 1;
-#define down(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
+time_t now;
+int rflg = 1;
+int hscmp(), ucmp(), lcmp(), tcmp();
main(argc, argv)
int argc;
char **argv;
{
- struct direct *dp;
- int f, i, t;
- char buf[sizeof(struct whod)]; int cc;
- char *name;
- register struct hs *hsp = hs;
+ extern char *optarg;
+ extern int optind;
+ register struct hs *hsp;
register struct whod *wd;
register struct whoent *we;
- int maxloadav = 0;
+ 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();
- name = *argv;
- while (*++argv)
- while (**argv)
- switch (*(*argv)++) {
- case 'a':
- aflg++;
- break;
- case 'l':
- cmp = lcmp;
- break;
- case 'u':
- cmp = ucmp;
- break;
- case 't':
- cmp = tcmp;
- break;
- case 'r':
- rflg = -rflg;
- break;
- case '-':
- break;
- default:
- fprintf(stderr, "Usage: %s [ -ar [ lut ] ]\n",
- name);
- exit (1);
- }
- time(&t);
- if (chdir(RWHODIR) < 0) {
- perror(RWHODIR);
- exit(1);
- }
- dirp = opendir(".");
- if (dirp == NULL) {
- perror(RWHODIR);
+ 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)
+ if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
continue;
- if (strncmp(dp->d_name, "whod.", 5))
+ if ((f = open(dp->d_name, O_RDONLY, 0)) < 0) {
+ (void)fprintf(stderr, "ruptime: %s: %s\n",
+ dp->d_name, strerror(errno));
continue;
- if (nhosts == NHOSTS) {
- fprintf(stderr, "too many hosts\n");
- exit(1);
}
- f = open(dp->d_name, 0);
- if (f > 0) {
- cc = read(f, buf, sizeof(struct whod));
- if (cc >= WHDRSIZE) {
- hsp->hs_wd = (struct whod *)malloc(WHDRSIZE);
- wd = (struct whod *)buf;
- bcopy(buf, hsp->hs_wd, 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++;
- }
+ cc = read(f, buf, sizeof(struct whod));
+ (void)close(f);
+ if (cc < WHDRSIZE)
+ continue;
+ if (nhosts == hspace) {
+ morehosts();
+ hsp = hs + nhosts;
}
- (void) close(f);
+ /* 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++;
}
- (void) time(&now);
- qsort((char *)hs, nhosts, sizeof (hs[0]), cmp);
- if (nhosts == 0) {
- printf("no hosts!?!\n");
+ 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 (down(hsp)) {
- printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
+ if (ISDOWN(hsp)) {
+ (void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
interval(now - hsp->hs_wd->wd_recvtime, "down"));
continue;
}
- printf("%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
+ (void)printf(
+ "%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
hsp->hs_wd->wd_hostname,
- interval(hsp->hs_wd->wd_sendtime -
- hsp->hs_wd->wd_boottime, " up"),
+ 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[1] / 100.0,
maxloadav >= 1000 ? 5 : 4,
hsp->hs_wd->wd_loadav[2] / 100.0);
- cfree(hsp->hs_wd);
+ free((void *)hsp->hs_wd);
}
exit(0);
}
char *
-interval(time, updown)
- int time;
+interval(tval, updown)
+ time_t tval;
char *updown;
{
static char resbuf[32];
int days, hours, minutes;
- if (time < 0 || time > 365*24*60*60) {
- (void) sprintf(resbuf, " %s ??:??", updown);
- return (resbuf);
+ if (tval < 0 || tval > 365*24*60*60) {
+ (void)sprintf(resbuf, " %s ??:??", updown);
+ return(resbuf);
}
- minutes = (time + 59) / 60; /* round to minutes */
+ 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",
+ (void)sprintf(resbuf, "%s %2d+%02d:%02d",
updown, days, hours, minutes);
else
- (void) sprintf(resbuf, "%s %2d:%02d",
+ (void)sprintf(resbuf, "%s %2d:%02d",
updown, hours, minutes);
- return (resbuf);
+ return(resbuf);
}
-hscmp(h1, h2)
- struct hs *h1, *h2;
+/* 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));
+ return(rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname));
}
-/*
- * Compare according to load average.
- */
-lcmp(h1, h2)
- struct hs *h1, *h2;
+/* load average comparison */
+lcmp(a1, a2)
+ void *a1, *a2;
{
+ register struct hs *h1 = a1, *h2 = a2;
- if (down(h1))
- if (down(h2))
- return (tcmp(h1, h2));
+ if (ISDOWN(h1))
+ if (ISDOWN(h2))
+ return(tcmp(a1, a2));
else
- return (rflg);
- else if (down(h2))
- return (-rflg);
+ return(rflg);
+ else if (ISDOWN(h2))
+ return(-rflg);
else
- return (rflg *
+ return(rflg *
(h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0]));
}
-/*
- * Compare according to number of users.
- */
-ucmp(h1, h2)
- struct hs *h1, *h2;
+/* number of users comparison */
+ucmp(a1, a2)
+ void *a1, *a2;
{
+ register struct hs *h1 = a1, *h2 = a2;
- if (down(h1))
- if (down(h2))
- return (tcmp(h1, h2));
+ if (ISDOWN(h1))
+ if (ISDOWN(h2))
+ return(tcmp(a1, a2));
else
- return (rflg);
- else if (down(h2))
- return (-rflg);
+ return(rflg);
+ else if (ISDOWN(h2))
+ return(-rflg);
else
- return (rflg * (h2->hs_nusers - h1->hs_nusers));
+ return(rflg * (h2->hs_nusers - h1->hs_nusers));
}
-/*
- * Compare according to uptime.
- */
-tcmp(h1, h2)
- struct hs *h1, *h2;
+/* uptime comparison */
+tcmp(a1, a2)
+ void *a1, *a2;
{
- long t1, t2;
+ register struct hs *h1 = a1, *h2 = a2;
- return (rflg * (
- (down(h2) ? h2->hs_wd->wd_recvtime - now
+ return(rflg * (
+ (ISDOWN(h2) ? h2->hs_wd->wd_recvtime - now
: h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime)
-
- (down(h1) ? h1->hs_wd->wd_recvtime - now
+ (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);
+ }
+}