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>
61 #define LEFTEARTH(h) (now - (h) > 4*24*60*60)
62 #define ISDOWN(h) (now - (h)->hs_wd.wd_recvtime > 11 * 60)
63 #define WHDRSIZE __offsetof(struct whod, wd_we)
70 static int hscmp(const void *, const void *);
71 static char *interval(time_t, const char *);
72 static int lcmp(const void *, const void *);
73 static void ruptime(const char *, int, int (*)(const void *, const void *));
74 static int tcmp(const void *, const void *);
75 static int ucmp(const void *, const void *);
76 static void usage(void);
79 main(int argc, char *argv[])
81 int (*cmp)(const void *, const void *);
86 while ((ch = getopt(argc, argv, "alrut")) != -1)
109 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
110 err(1, "%s", _PATH_RWHODIR);
112 ruptime(*argv, aflg, cmp);
113 while (*argv++ != NULL) {
116 ruptime(*argv, aflg, cmp);
122 interval(time_t tval, const char *updown)
124 static char resbuf[32];
125 int days, hours, minutes;
128 (void)snprintf(resbuf, sizeof(resbuf), "%s ??:??", updown);
131 /* Round to minutes. */
132 minutes = (tval + (60 - 1)) / 60;
133 hours = minutes / 60;
138 (void)snprintf(resbuf, sizeof(resbuf),
139 "%s %4d+%02d:%02d", updown, days, hours, minutes);
141 (void)snprintf(resbuf, sizeof(resbuf),
142 "%s %2d:%02d", updown, hours, minutes);
146 #define HS(a) ((const struct hs *)(a))
148 /* Alphabetical comparison. */
150 hscmp(const void *a1, const void *a2)
153 strcmp(HS(a1)->hs_wd.wd_hostname, HS(a2)->hs_wd.wd_hostname));
156 /* Load average comparison. */
158 lcmp(const void *a1, const void *a2)
162 return (tcmp(a1, a2));
165 else if (ISDOWN(HS(a2)))
169 (HS(a2)->hs_wd.wd_loadav[0] - HS(a1)->hs_wd.wd_loadav[0]));
173 ruptime(const char *host, int aflg, int (*cmp)(const void *, const void *))
179 const char *hostname;
180 int fd, i, maxloadav;
188 for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
189 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5) != 0)
191 if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
192 warn("%s", dp->d_name);
196 if (nhosts == hspace) {
198 realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL)
204 cc = read(fd, wd, sizeof(*wd));
206 if (cc < (ssize_t)WHDRSIZE)
210 hostname = wd->wd_hostname;
211 if (strcasecmp(hostname, host) != 0)
214 if (LEFTEARTH(wd->wd_recvtime))
217 for (i = 0; i < 2; i++)
218 if (wd->wd_loadav[i] > maxloadav)
219 maxloadav = wd->wd_loadav[i];
221 for (hsp->hs_nusers = 0, we = &wd->wd_we[0];
222 (char *)(we + 1) <= (char *)wd + cc; we++)
223 if (aflg || we->we_idle < 3600)
230 errx(1, "no hosts in %s", _PATH_RWHODIR);
232 warnx("host %s not in %s", host, _PATH_RWHODIR);
235 qsort(hs, nhosts, sizeof(hs[0]), cmp);
236 for (i = 0; i < (int)nhosts; i++) {
240 (void)printf("%-25.25s%s\n", wd->wd_hostname,
241 interval(now - hsp->hs_wd.wd_recvtime, "down"));
245 "%-25.25s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
247 interval((time_t)wd->wd_sendtime -
248 (time_t)wd->wd_boottime, " up"),
250 hsp->hs_nusers == 1 ? ", " : "s,",
251 maxloadav >= 1000 ? 5 : 4,
252 wd->wd_loadav[0] / 100.0,
253 maxloadav >= 1000 ? 5 : 4,
254 wd->wd_loadav[1] / 100.0,
255 maxloadav >= 1000 ? 5 : 4,
256 wd->wd_loadav[2] / 100.0);
262 /* Number of users comparison. */
264 ucmp(const void *a1, const void *a2)
268 return (tcmp(a1, a2));
271 else if (ISDOWN(HS(a2)))
274 return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers));
277 /* Uptime comparison. */
279 tcmp(const void *a1, const void *a2)
282 (ISDOWN(HS(a2)) ? HS(a2)->hs_wd.wd_recvtime - now
283 : HS(a2)->hs_wd.wd_sendtime - HS(a2)->hs_wd.wd_boottime)
285 (ISDOWN(HS(a1)) ? HS(a1)->hs_wd.wd_recvtime - now
286 : HS(a1)->hs_wd.wd_sendtime - HS(a1)->hs_wd.wd_boottime)
293 (void)fprintf(stderr, "usage: ruptime [-alrtu] [host ...]\n");