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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/ruptime/ruptime.c | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/ruptime/ruptime.c')
-rw-r--r-- | usr.bin/ruptime/ruptime.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/usr.bin/ruptime/ruptime.c b/usr.bin/ruptime/ruptime.c new file mode 100644 index 0000000..b9c17a7 --- /dev/null +++ b/usr.bin/ruptime/ruptime.c @@ -0,0 +1,281 @@ +/* + * Copyright (c) 1983, 1993, 1994 + * 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 +static char copyright[] = +"@(#) Copyright (c) 1983, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)ruptime.c 8.2 (Berkeley) 4/5/94"; +#endif /* not lint */ + +#include <sys/param.h> + +#include <protocols/rwhod.h> + +#include <dirent.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <tzfile.h> +#include <unistd.h> + +struct hs { + struct whod *hs_wd; + int hs_nusers; +} *hs; +struct whod awhod; + +#define ISDOWN(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60) +#define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we)) + +size_t nhosts; +time_t now; +int rflg = 1; + +int hscmp __P((const void *, const void *)); +char *interval __P((time_t, char *)); +int lcmp __P((const void *, const void *)); +void morehosts __P((void)); +int tcmp __P((const void *, const void *)); +int ucmp __P((const void *, const void *)); +void usage __P((void)); + +int +main(argc, argv) + int argc; + char **argv; +{ + extern int optind; + struct dirent *dp; + struct hs *hsp; + struct whod *wd; + struct whoent *we; + DIR *dirp; + size_t hspace; + int aflg, cc, ch, fd, i, maxloadav; + char buf[sizeof(struct whod)]; + int (*cmp) __P((const void *, const void *)); + + aflg = 0; + cmp = hscmp; + while ((ch = getopt(argc, argv, "alrut")) != EOF) + switch (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: + usage(); + } + argc -= optind; + argv += optind; + + if (argc != 0) + usage(); + + if (chdir(_PATH_RWHODIR) || (dirp = opendir(".")) == NULL) + err(1, "%s", _PATH_RWHODIR); + + maxloadav = -1; + for (nhosts = hspace = 0; (dp = readdir(dirp)) != NULL;) { + if (dp->d_ino == 0 || strncmp(dp->d_name, "whod.", 5)) + continue; + if ((fd = open(dp->d_name, O_RDONLY, 0)) < 0) { + warn("%s", dp->d_name); + continue; + } + cc = read(fd, buf, sizeof(struct whod)); + (void)close(fd); + + if (cc < WHDRSIZE) + continue; + if (nhosts == hspace) { + if ((hs = + realloc(hs, (hspace += 40) * sizeof(*hs))) == NULL) + err(1, NULL); + hsp = hs + nhosts; + } + + if ((hsp->hs_wd = malloc((size_t)WHDRSIZE)) == NULL) + err(1, NULL); + memmove(hsp->hs_wd, buf, (size_t)WHDRSIZE); + + for (wd = (struct whod *)buf, i = 0; i < 2; ++i) + if (wd->wd_loadav[i] > maxloadav) + maxloadav = wd->wd_loadav[i]; + + for (hsp->hs_nusers = 0, + we = (struct whoent *)(buf + cc); --we >= wd->wd_we;) + if (aflg || we->we_idle < 3600) + ++hsp->hs_nusers; + ++hsp; + ++nhosts; + } + if (nhosts == 0) + errx(0, "no hosts in %s.", _PATH_RWHODIR); + + (void)time(&now); + qsort(hs, nhosts, sizeof(hs[0]), cmp); + for (i = 0; i < nhosts; i++) { + hsp = &hs[i]; + if (ISDOWN(hsp)) { + (void)printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname, + interval(now - hsp->hs_wd->wd_recvtime, "down")); + continue; + } + (void)printf( + "%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n", + hsp->hs_wd->wd_hostname, + 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[0] / 100.0, + maxloadav >= 1000 ? 5 : 4, + hsp->hs_wd->wd_loadav[1] / 100.0, + maxloadav >= 1000 ? 5 : 4, + hsp->hs_wd->wd_loadav[2] / 100.0); + } + exit(0); +} + +char * +interval(tval, updown) + time_t tval; + char *updown; +{ + static char resbuf[32]; + int days, hours, minutes; + + if (tval < 0 || tval > DAYSPERNYEAR * SECSPERDAY) { + (void)snprintf(resbuf, sizeof(resbuf), " %s ??:??", updown); + return (resbuf); + } + /* round to minutes. */ + minutes = (tval + (SECSPERMIN - 1)) / SECSPERMIN; + hours = minutes / MINSPERHOUR; + minutes %= MINSPERHOUR; + days = hours / HOURSPERDAY; + hours %= HOURSPERDAY; + if (days) + (void)snprintf(resbuf, sizeof(resbuf), + "%s %2d+%02d:%02d", updown, days, hours, minutes); + else + (void)snprintf(resbuf, sizeof(resbuf), + "%s %2d:%02d", updown, hours, minutes); + return (resbuf); +} + +#define HS(a) ((struct hs *)(a)) + +/* Alphabetical comparison. */ +int +hscmp(a1, a2) + const void *a1, *a2; +{ + return (rflg * + strcmp(HS(a1)->hs_wd->wd_hostname, HS(a2)->hs_wd->wd_hostname)); +} + +/* Load average comparison. */ +int +lcmp(a1, a2) + const void *a1, *a2; +{ + if (ISDOWN(HS(a1))) + if (ISDOWN(HS(a2))) + return (tcmp(a1, a2)); + else + return (rflg); + else if (ISDOWN(HS(a2))) + return (-rflg); + else + return (rflg * + (HS(a2)->hs_wd->wd_loadav[0] - HS(a1)->hs_wd->wd_loadav[0])); +} + +/* Number of users comparison. */ +int +ucmp(a1, a2) + const void *a1, *a2; +{ + if (ISDOWN(HS(a1))) + if (ISDOWN(HS(a2))) + return (tcmp(a1, a2)); + else + return (rflg); + else if (ISDOWN(HS(a2))) + return (-rflg); + else + return (rflg * (HS(a2)->hs_nusers - HS(a1)->hs_nusers)); +} + +/* Uptime comparison. */ +int +tcmp(a1, a2) + const void *a1, *a2; +{ + return (rflg * ( + (ISDOWN(HS(a2)) ? HS(a2)->hs_wd->wd_recvtime - now + : HS(a2)->hs_wd->wd_sendtime - HS(a2)->hs_wd->wd_boottime) + - + (ISDOWN(HS(a1)) ? HS(a1)->hs_wd->wd_recvtime - now + : HS(a1)->hs_wd->wd_sendtime - HS(a1)->hs_wd->wd_boottime) + )); +} + +void +usage() +{ + (void)fprintf(stderr, "usage: ruptime [-alrut]\n"); + exit(1); +} |