/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * University Copyright- Copyright (c) 1982, 1986, 1988 * The Regents of the University of California * All Rights Reserved * * University Acknowledgment- Portions of this document are derived from * software developed by the University of California, Berkeley, and its * contributors. */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include static DIR *dirp; #define HOSTLIM 100 static int hostslim = HOSTLIM; static int nhosts; struct hs { struct whod *hs_wd; int hs_nusers; }; static int hscmp(), ucmp(), lcmp(), tcmp(); #define RWHODIR "/var/spool/rwho" static char *interval(); static time_t now; static int aflg; static int rflg = 1; #define down(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60) /* ARGSUSED */ int main(int argc, char **argv) { struct dirent *dp; int f, i; struct whod *buf; int cc; char *name; struct hs *hs; struct hs *hsp; struct whod *wd; struct whoent *we; int maxloadav = 0; int (*cmp)() = hscmp; ptrdiff_t hoff; name = *argv; while (*++argv) while (**argv) switch (*(*argv)++) { case 'a': aflg++; break; case 'l': cmp = lcmp; break; case 'u': cmp = ucmp; break; case 't': cmp = tcmp; break; case 'r': rflg = -rflg; break; case '-': break; default: (void) fprintf(stderr, "Usage: %s [ -alrtu ]" " (choose at most one of l, t, or u)\n", name); exit(1); } if ((hs = malloc(hostslim * sizeof (struct hs))) == NULL) { (void) fprintf(stderr, "initial hs malloc failed\n"); exit(1); } hsp = hs; if ((buf = malloc(sizeof (struct whod))) == NULL) { (void) fprintf(stderr, "initial buf malloc failed\n"); exit(1); } if (chdir(RWHODIR) < 0) { perror(RWHODIR); exit(1); } dirp = opendir("."); if (dirp == NULL) { perror(RWHODIR); exit(1); } while (dp = readdir(dirp)) { if (dp->d_ino == 0) continue; if (strncmp(dp->d_name, "whod.", 5)) continue; if (nhosts == hostslim) { /* * We trust that the file system's limit on the number * of files in a directory will kick in long before * integer overflow. */ hostslim = hostslim << 1; /* * hsp points into an area about to be moved, * so we first remember its offset into hs[], * then restore it after realloc() has moved * the data. */ hoff = hsp - hs; hs = realloc(hs, hostslim * sizeof (struct hs)); if (hs == NULL) { (void) fprintf(stderr, "too many hosts\n"); exit(1); } hsp = hs + hoff; } f = open(dp->d_name, 0); if (f > 0) { int whdrsize = sizeof (*buf) - sizeof (buf->wd_we); cc = read(f, buf, sizeof (struct whod)); if (cc >= whdrsize) { hsp->hs_wd = malloc(whdrsize); wd = buf; bcopy((char *)buf, (char *)hsp->hs_wd, whdrsize); hsp->hs_nusers = 0; for (i = 0; i < 2; i++) if (wd->wd_loadav[i] > maxloadav) maxloadav = wd->wd_loadav[i]; /* LINTED: pointer alignment */ we = (struct whoent *)(((char *)buf)+cc); while (--we >= wd->wd_we) if (aflg || we->we_idle < 3600) hsp->hs_nusers++; nhosts++; hsp++; } } (void) close(f); } (void) time(&now); qsort((char *)hs, nhosts, sizeof (hs[0]), cmp); if (nhosts == 0) { (void) printf("no hosts!?!\n"); exit(1); } for (i = 0; i < nhosts; i++) { hsp = &hs[i]; if (down(hsp)) { (void) printf("%-12s%s\n", hsp->hs_wd->wd_hostname, interval((int)(now - hsp->hs_wd->wd_recvtime), "down")); continue; } (void) printf("%-12s%s, %4d user%s load %*.2f," " %*.2f, %*.2f\n", hsp->hs_wd->wd_hostname, interval(hsp->hs_wd->wd_sendtime - 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); free(hsp->hs_wd); } return (0); } static char * interval(int time, char *updown) { static char resbuf[32]; int days, hours, minutes; if (time < 0 || time > 10*365*24*60*60) { (void) sprintf(resbuf, " %s ??:??", updown); return (resbuf); } minutes = (time + 59) / 60; /* round to minutes */ hours = minutes / 60; minutes %= 60; days = hours / 24; hours %= 24; if (days) (void) sprintf(resbuf, "%s %2d+%02d:%02d", updown, days, hours, minutes); else (void) sprintf(resbuf, "%s %2d:%02d", updown, hours, minutes); return (resbuf); } static int hscmp(struct hs *h1, struct hs *h2) { return (rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname)); } /* * Compare according to load average. */ static int lcmp(struct hs *h1, struct hs *h2) { if (down(h1)) if (down(h2)) return (tcmp(h1, h2)); else return (rflg); else if (down(h2)) return (-rflg); else return (rflg * (h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0])); } /* * Compare according to number of users. */ static int ucmp(struct hs *h1, struct hs *h2) { if (down(h1)) if (down(h2)) return (tcmp(h1, h2)); else return (rflg); else if (down(h2)) return (-rflg); else return (rflg * (h2->hs_nusers - h1->hs_nusers)); } /* * Compare according to uptime. */ static int tcmp(struct hs *h1, struct hs *h2) { return (rflg * ( (down(h2) ? h2->hs_wd->wd_recvtime - now : h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime) - (down(h1) ? h1->hs_wd->wd_recvtime - now : h1->hs_wd->wd_sendtime - h1->hs_wd->wd_boottime))); }