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 * 3. 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
29 * @(#) Copyright (c) 1983, 1993, 1994 The Regents of the University of California. All rights reserved.
30 * @(#)ruptime.c 8.2 (Berkeley) 4/5/94
31 * $FreeBSD: src/usr.bin/ruptime/ruptime.c,v 1.12.2.1 2000/06/30 09:45:00 ps Exp $
34 #include <sys/param.h>
36 #include <protocols/rwhod.h>
53 #define LEFTEARTH(h) (now - (h) > 4*24*60*60)
54 #define ISDOWN(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60)
55 #define WHDRSIZE (sizeof(struct whod) - \
56 sizeof(((struct whod *)NULL)->wd_we))
62 static int hscmp(const void *, const void *);
63 static char *interval(time_t, const char *);
64 static int lcmp(const void *, const void *);
65 static int tcmp(const void *, const void *);
66 static int ucmp(const void *, const void *);
67 static void usage(void) __dead2;
70 main(int argc, char *argv[])
73 struct hs *hsp = NULL;
78 int aflg, ch, fd, maxloadav;
79 char buf[sizeof(struct whod)];
80 int (*cmp)(const void *, const void *);
85 while ((ch = getopt(argc, argv, "alrut")) != -1)
111 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
112 err(1, "%s", _PATH_RWHODIR);
115 for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
116 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5))
118 if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
119 warn("%s", dp->d_name);
122 cc = read(fd, buf, sizeof(struct whod));
127 if (LEFTEARTH(((struct whod *)buf)->wd_recvtime))
129 if (nhosts == hspace) {
131 if ((hs = realloc(hs, hspace * sizeof(*hs))) == NULL)
136 if ((hsp->hs_wd = malloc((size_t)WHDRSIZE)) == NULL)
138 memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE);
140 for (wd = (struct whod *)buf, i = 0; i < 2; ++i)
141 if (wd->wd_loadav[i] > maxloadav)
142 maxloadav = wd->wd_loadav[i];
144 for (hsp->hs_nusers = 0,
145 we = (struct whoent *)(buf + cc); --we >= wd->wd_we;)
146 if (aflg || we->we_idle < 3600)
152 errx(1, "no hosts in %s", _PATH_RWHODIR);
155 qsort(hs, nhosts, sizeof(hs[0]), cmp);
156 for (i = 0; i < nhosts; i++) {
159 (void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname,
160 interval(now - hsp->hs_wd->wd_recvtime, "down"));
164 "%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n",
165 hsp->hs_wd->wd_hostname,
166 interval((time_t)hsp->hs_wd->wd_sendtime -
167 (time_t)hsp->hs_wd->wd_boottime, " up"),
169 hsp->hs_nusers == 1 ? ", " : "s,",
170 maxloadav >= 1000 ? 5 : 4,
171 hsp->hs_wd->wd_loadav[0] / 100.0,
172 maxloadav >= 1000 ? 5 : 4,
173 hsp->hs_wd->wd_loadav[1] / 100.0,
174 maxloadav >= 1000 ? 5 : 4,
175 hsp->hs_wd->wd_loadav[2] / 100.0);
181 interval(time_t tval, const char *updown)
183 static char resbuf[32];
184 int days, hours, minutes;
187 (void)snprintf(resbuf, sizeof(resbuf), " %s ??:??", updown);
190 /* round to minutes. */
191 minutes = (tval + (60 - 1)) / 60;
192 hours = minutes / 60;
197 (void)snprintf(resbuf, sizeof(resbuf),
198 "%s %3d+%02d:%02d", updown, days, hours, minutes);
200 (void)snprintf(resbuf, sizeof(resbuf),
201 "%s %2d:%02d", updown, hours, minutes);
205 #define HS(a) ((const struct hs *)(a))
207 /* Alphabetical comparison. */
209 hscmp(const void *a1, const void *a2)
212 strcmp(HS(a1)->hs_wd->wd_hostname, HS(a2)->hs_wd->wd_hostname));
215 /* Load average comparison. */
217 lcmp(const void *a1, const void *a2)
221 return (tcmp(a1, a2));
224 else if (ISDOWN(HS(a2)))
228 (HS(a2)->hs_wd->wd_loadav[0] - HS(a1)->hs_wd->wd_loadav[0]));
231 /* Number of users comparison. */
233 ucmp(const void *a1, const void *a2)
237 return (tcmp(a1, a2));
240 else if (ISDOWN(HS(a2)))
243 return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers));
246 /* Uptime comparison. */
248 tcmp(const void *a1, const void *a2)
251 (ISDOWN(HS(a2)) ? HS(a2)->hs_wd->wd_recvtime - now
252 : HS(a2)->hs_wd->wd_sendtime - HS(a2)->hs_wd->wd_boottime)
254 (ISDOWN(HS(a1)) ? HS(a1)->hs_wd->wd_recvtime - now
255 : HS(a1)->hs_wd->wd_sendtime - HS(a1)->hs_wd->wd_boottime)
262 (void)fprintf(stderr, "usage: ruptime [-alrut]\n");