2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993, 1994
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8 * modification, are permitted provided that the following conditions
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32 #include <sys/param.h>
34 #include <protocols/rwhod.h>
50 #define LEFTEARTH(h) (now - (h) > 4*24*60*60)
51 #define ISDOWN(h) (now - (h)->hs_wd.wd_recvtime > 11 * 60)
52 #define WHDRSIZE __offsetof(struct whod, wd_we)
59 static int hscmp(const void *, const void *);
60 static char *interval(time_t, const char *);
61 static int iwidth(int);
62 static int lcmp(const void *, const void *);
63 static void ruptime(const char *, int, int (*)(const void *, const void *));
64 static int tcmp(const void *, const void *);
65 static int ucmp(const void *, const void *);
66 static void usage(void);
69 main(int argc, char *argv[])
71 int (*cmp)(const void *, const void *);
76 while ((ch = getopt(argc, argv, "alrut")) != -1)
99 if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL)
100 err(1, "%s", _PATH_RWHODIR);
102 ruptime(*argv, aflg, cmp);
103 while (*argv++ != NULL) {
106 ruptime(*argv, aflg, cmp);
112 interval(time_t tval, const char *updown)
114 static char resbuf[32];
115 int days, hours, minutes;
118 (void)snprintf(resbuf, sizeof(resbuf), "%s ??:??", updown);
121 /* Round to minutes. */
122 minutes = (tval + (60 - 1)) / 60;
123 hours = minutes / 60;
128 (void)snprintf(resbuf, sizeof(resbuf),
129 "%s %4d+%02d:%02d", updown, days, hours, minutes);
131 (void)snprintf(resbuf, sizeof(resbuf),
132 "%s %2d:%02d", updown, hours, minutes);
136 /* Width to print a small nonnegative integer. */
151 #define HS(a) ((const struct hs *)(a))
153 /* Alphabetical comparison. */
155 hscmp(const void *a1, const void *a2)
158 strcmp(HS(a1)->hs_wd.wd_hostname, HS(a2)->hs_wd.wd_hostname));
161 /* Load average comparison. */
163 lcmp(const void *a1, const void *a2)
167 return (tcmp(a1, a2));
170 else if (ISDOWN(HS(a2)))
174 (HS(a2)->hs_wd.wd_loadav[0] - HS(a1)->hs_wd.wd_loadav[0]));
178 ruptime(const char *host, int aflg, int (*cmp)(const void *, const void *))
184 int fd, hostnamewidth, i, loadavwidth[3], userswidth, w;
196 for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) {
197 if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5) != 0)
199 if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) {
200 warn("%s", dp->d_name);
204 if (nhosts == hspace) {
206 realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL)
212 cc = read(fd, wd, sizeof(*wd));
214 if (cc < (ssize_t)WHDRSIZE)
217 if (host != NULL && strcasecmp(wd->wd_hostname, host) != 0)
219 if (LEFTEARTH(wd->wd_recvtime))
222 if (hostnamewidth < (int)strlen(wd->wd_hostname))
223 hostnamewidth = (int)strlen(wd->wd_hostname);
226 for (i = 0; i < 3; i++) {
227 w = iwidth(wd->wd_loadav[i] / 100) + 3;
228 if (loadavwidth[i] < w)
231 for (hsp->hs_nusers = 0, we = &wd->wd_we[0];
232 (char *)(we + 1) <= (char *)wd + cc; we++)
233 if (aflg || we->we_idle < 3600)
235 if (userswidth < iwidth(hsp->hs_nusers))
236 userswidth = iwidth(hsp->hs_nusers);
244 errx(1, "no hosts in %s", _PATH_RWHODIR);
246 warnx("host %s not in %s", host, _PATH_RWHODIR);
249 qsort(hs, nhosts, sizeof(hs[0]), cmp);
250 w = userswidth + loadavwidth[0] + loadavwidth[1] + loadavwidth[2];
251 if (hostnamewidth + w > 41)
252 hostnamewidth = 41 - w; /* limit to 79 cols */
253 for (i = 0; i < (int)nhosts; i++) {
257 (void)printf("%-*.*s %s\n",
258 hostnamewidth, hostnamewidth, wd->wd_hostname,
259 interval(now - hsp->hs_wd.wd_recvtime, "down"));
263 "%-*.*s %s, %*d user%s load %*.2f, %*.2f, %*.2f\n",
264 hostnamewidth, hostnamewidth, wd->wd_hostname,
265 interval((time_t)wd->wd_sendtime -
266 (time_t)wd->wd_boottime, " up"),
267 userswidth, hsp->hs_nusers,
268 hsp->hs_nusers == 1 ? ", " : "s,",
269 loadavwidth[0], wd->wd_loadav[0] / 100.0,
270 loadavwidth[1], wd->wd_loadav[1] / 100.0,
271 loadavwidth[2], wd->wd_loadav[2] / 100.0);
277 /* Number of users comparison. */
279 ucmp(const void *a1, const void *a2)
283 return (tcmp(a1, a2));
286 else if (ISDOWN(HS(a2)))
289 return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers));
292 /* Uptime comparison. */
294 tcmp(const void *a1, const void *a2)
297 (ISDOWN(HS(a2)) ? HS(a2)->hs_wd.wd_recvtime - now
298 : HS(a2)->hs_wd.wd_sendtime - HS(a2)->hs_wd.wd_boottime)
300 (ISDOWN(HS(a1)) ? HS(a1)->hs_wd.wd_recvtime - now
301 : HS(a1)->hs_wd.wd_sendtime - HS(a1)->hs_wd.wd_boottime)
308 (void)fprintf(stderr, "usage: ruptime [-alrtu] [host ...]\n");