2 * Copyright (c) 1983, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1983, 1993, 1994\n\
33 The Regents of the University of California. All rights reserved.\n";
37 static const char sccsid[] = "@(#)ruptime.c 8.2 (Berkeley) 4/5/94";
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
43 #include <sys/param.h>
45 #include <protocols/rwhod.h>
62 #define LEFTEARTH(h) (now - (h) > 4*24*60*60)
63 #define ISDOWN(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
64 #define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we))
71 int hscmp(const void *, const void *);
72 char *interval(time_t, const char *);
73 int lcmp(const void *, const void *);
75 void ruptime(const char *, int, int (*)(const void *, const void *));
76 int tcmp(const void *, const void *);
77 int ucmp(const void *, const void *);
81 main(int argc, char *argv[])
83 int (*cmp)(const void *, const void *);
88 while ((ch = getopt(argc, argv, "alrut")) != -1)
111 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
112 err(1, "%s", _PATH_RWHODIR);
114 ruptime(*argv, aflg, cmp);
115 while (*argv++ != NULL) {
118 ruptime(*argv, aflg, cmp);
124 interval(time_t tval, const char *updown)
126 static char resbuf[32];
127 int days, hours, minutes;
130 (void)snprintf(resbuf, sizeof(resbuf), " %s ??:??", updown);
133 /* round to minutes. */
134 minutes = (tval + (60 - 1)) / 60;
135 hours = minutes / 60;
140 (void)snprintf(resbuf, sizeof(resbuf),
141 "%s %3d+%02d:%02d", updown, days, hours, minutes);
143 (void)snprintf(resbuf, sizeof(resbuf),
144 "%s %2d:%02d", updown, hours, minutes);
148 #define HS(a) ((const struct hs *)(a))
150 /* Alphabetical comparison. */
152 hscmp(const void *a1, const void *a2)
155 strcmp(HS(a1)->hs_wd->wd_hostname, HS(a2)->hs_wd->wd_hostname));
158 /* Load average comparison. */
160 lcmp(const void *a1, const void *a2)
164 return (tcmp(a1, a2));
167 else if (ISDOWN(HS(a2)))
171 (HS(a2)->hs_wd->wd_loadav[0] - HS(a1)->hs_wd->wd_loadav[0]));
175 ruptime(const char *host, int aflg, int (*cmp)(const void *, const void *))
181 const char *hostname;
182 char buf[sizeof(struct whod)];
183 int fd, i, maxloadav;
191 for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
192 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5) != 0)
194 if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
195 warn("%s", dp->d_name);
198 cc = read(fd, buf, sizeof(struct whod));
201 hostname = ((struct whod *)buf)->wd_hostname;
202 if (strcasecmp(hostname, host) != 0)
208 if (LEFTEARTH(((struct whod *)buf)->wd_recvtime))
210 if (nhosts == hspace) {
212 realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL)
217 if ((hsp->hs_wd = malloc((size_t)WHDRSIZE)) == NULL)
219 memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE);
221 for (wd = (struct whod *)buf, i = 0; i < 2; ++i)
222 if (wd->wd_loadav[i] > maxloadav)
223 maxloadav = wd->wd_loadav[i];
225 for (hsp->hs_nusers = 0,
226 we = (struct whoent *)(buf + cc); --we >= wd->wd_we;)
227 if (aflg || we->we_idle < 3600)
234 errx(1, "no hosts in %s", _PATH_RWHODIR);
236 warnx("host %s not in %s", host, _PATH_RWHODIR);
239 qsort(hs, nhosts, sizeof(hs[0]), cmp);
240 for (i = 0; i < (int)nhosts; i++) {
243 (void)printf("%-25.25s%s\n", hsp->hs_wd->wd_hostname,
244 interval(now - hsp->hs_wd->wd_recvtime, "down"));
248 "%-25.25s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
249 hsp->hs_wd->wd_hostname,
250 interval((time_t)hsp->hs_wd->wd_sendtime -
251 (time_t)hsp->hs_wd->wd_boottime, " up"),
253 hsp->hs_nusers == 1 ? ", " : "s,",
254 maxloadav >= 1000 ? 5 : 4,
255 hsp->hs_wd->wd_loadav[0] / 100.0,
256 maxloadav >= 1000 ? 5 : 4,
257 hsp->hs_wd->wd_loadav[1] / 100.0,
258 maxloadav >= 1000 ? 5 : 4,
259 hsp->hs_wd->wd_loadav[2] / 100.0);
266 /* Number of users comparison. */
268 ucmp(const void *a1, const void *a2)
272 return (tcmp(a1, a2));
275 else if (ISDOWN(HS(a2)))
278 return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers));
281 /* Uptime comparison. */
283 tcmp(const void *a1, const void *a2)
286 (ISDOWN(HS(a2)) ? HS(a2)->hs_wd->wd_recvtime - now
287 : HS(a2)->hs_wd->wd_sendtime - HS(a2)->hs_wd->wd_boottime)
289 (ISDOWN(HS(a1)) ? HS(a1)->hs_wd->wd_recvtime - now
290 : HS(a1)->hs_wd->wd_sendtime - HS(a1)->hs_wd->wd_boottime)
297 (void)fprintf(stderr, "usage: ruptime [-alrtu] [host ...]\n");