| 1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | char copyright[] = |
| 9 | "@(#) Copyright (c) 1983 Regents of the University of California.\n\ |
| 10 | All rights reserved.\n"; |
| 11 | #endif not lint |
| 12 | |
| 13 | #ifndef lint |
| 14 | static char sccsid[] = "@(#)ruptime.c 5.1 (Berkeley) %G%"; |
| 15 | #endif not lint |
| 16 | |
| 17 | #include <sys/param.h> |
| 18 | #include <stdio.h> |
| 19 | #include <sys/dir.h> |
| 20 | #include "../etc/rwhod/rwhod.h" |
| 21 | |
| 22 | DIR *dirp; |
| 23 | |
| 24 | #define NHOSTS 100 |
| 25 | int nhosts; |
| 26 | struct hs { |
| 27 | struct whod *hs_wd; |
| 28 | int hs_nusers; |
| 29 | } hs[NHOSTS]; |
| 30 | struct whod awhod; |
| 31 | int hscmp(), ucmp(), lcmp(), tcmp(); |
| 32 | |
| 33 | #define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we)) |
| 34 | #define RWHODIR "/usr/spool/rwho" |
| 35 | |
| 36 | char *interval(); |
| 37 | int now; |
| 38 | char *malloc(), *sprintf(); |
| 39 | int aflg; |
| 40 | int rflg = 1; |
| 41 | |
| 42 | #define down(h) (now - (h)->hs_wd->wd_recvtime > 11 * 60) |
| 43 | |
| 44 | main(argc, argv) |
| 45 | int argc; |
| 46 | char **argv; |
| 47 | { |
| 48 | struct direct *dp; |
| 49 | int f, i, t; |
| 50 | char buf[sizeof(struct whod)]; int cc; |
| 51 | char *name; |
| 52 | register struct hs *hsp = hs; |
| 53 | register struct whod *wd; |
| 54 | register struct whoent *we; |
| 55 | int maxloadav = 0; |
| 56 | int (*cmp)() = hscmp; |
| 57 | |
| 58 | name = *argv; |
| 59 | while (*++argv) |
| 60 | while (**argv) |
| 61 | switch (*(*argv)++) { |
| 62 | case 'a': |
| 63 | aflg++; |
| 64 | break; |
| 65 | case 'l': |
| 66 | cmp = lcmp; |
| 67 | break; |
| 68 | case 'u': |
| 69 | cmp = ucmp; |
| 70 | break; |
| 71 | case 't': |
| 72 | cmp = tcmp; |
| 73 | break; |
| 74 | case 'r': |
| 75 | rflg = -rflg; |
| 76 | break; |
| 77 | case '-': |
| 78 | break; |
| 79 | default: |
| 80 | fprintf(stderr, "Usage: %s [ -ar [ lut ] ]\n", |
| 81 | name); |
| 82 | exit (1); |
| 83 | } |
| 84 | time(&t); |
| 85 | if (chdir(RWHODIR) < 0) { |
| 86 | perror(RWHODIR); |
| 87 | exit(1); |
| 88 | } |
| 89 | dirp = opendir("."); |
| 90 | if (dirp == NULL) { |
| 91 | perror(RWHODIR); |
| 92 | exit(1); |
| 93 | } |
| 94 | while (dp = readdir(dirp)) { |
| 95 | if (dp->d_ino == 0) |
| 96 | continue; |
| 97 | if (strncmp(dp->d_name, "whod.", 5)) |
| 98 | continue; |
| 99 | if (nhosts == NHOSTS) { |
| 100 | fprintf(stderr, "too many hosts\n"); |
| 101 | exit(1); |
| 102 | } |
| 103 | f = open(dp->d_name, 0); |
| 104 | if (f > 0) { |
| 105 | cc = read(f, buf, sizeof(struct whod)); |
| 106 | if (cc >= WHDRSIZE) { |
| 107 | hsp->hs_wd = (struct whod *)malloc(WHDRSIZE); |
| 108 | wd = (struct whod *)buf; |
| 109 | bcopy(buf, hsp->hs_wd, WHDRSIZE); |
| 110 | hsp->hs_nusers = 0; |
| 111 | for (i = 0; i < 2; i++) |
| 112 | if (wd->wd_loadav[i] > maxloadav) |
| 113 | maxloadav = wd->wd_loadav[i]; |
| 114 | we = (struct whoent *)(buf+cc); |
| 115 | while (--we >= wd->wd_we) |
| 116 | if (aflg || we->we_idle < 3600) |
| 117 | hsp->hs_nusers++; |
| 118 | nhosts++; hsp++; |
| 119 | } |
| 120 | } |
| 121 | (void) close(f); |
| 122 | } |
| 123 | (void) time(&now); |
| 124 | qsort((char *)hs, nhosts, sizeof (hs[0]), cmp); |
| 125 | if (nhosts == 0) { |
| 126 | printf("no hosts!?!\n"); |
| 127 | exit(1); |
| 128 | } |
| 129 | for (i = 0; i < nhosts; i++) { |
| 130 | hsp = &hs[i]; |
| 131 | if (down(hsp)) { |
| 132 | printf("%-12.12s%s\n", hsp->hs_wd->wd_hostname, |
| 133 | interval(now - hsp->hs_wd->wd_recvtime, "down")); |
| 134 | continue; |
| 135 | } |
| 136 | printf("%-12.12s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n", |
| 137 | hsp->hs_wd->wd_hostname, |
| 138 | interval(hsp->hs_wd->wd_sendtime - |
| 139 | hsp->hs_wd->wd_boottime, " up"), |
| 140 | hsp->hs_nusers, |
| 141 | hsp->hs_nusers == 1 ? ", " : "s,", |
| 142 | maxloadav >= 1000 ? 5 : 4, |
| 143 | hsp->hs_wd->wd_loadav[0] / 100.0, |
| 144 | maxloadav >= 1000 ? 5 : 4, |
| 145 | hsp->hs_wd->wd_loadav[1] / 100.0, |
| 146 | maxloadav >= 1000 ? 5 : 4, |
| 147 | hsp->hs_wd->wd_loadav[2] / 100.0); |
| 148 | cfree(hsp->hs_wd); |
| 149 | } |
| 150 | exit(0); |
| 151 | } |
| 152 | |
| 153 | char * |
| 154 | interval(time, updown) |
| 155 | int time; |
| 156 | char *updown; |
| 157 | { |
| 158 | static char resbuf[32]; |
| 159 | int days, hours, minutes; |
| 160 | |
| 161 | if (time < 0 || time > 3*30*24*60*60) { |
| 162 | (void) sprintf(resbuf, " %s ??:??", updown); |
| 163 | return (resbuf); |
| 164 | } |
| 165 | minutes = (time + 59) / 60; /* round to minutes */ |
| 166 | hours = minutes / 60; minutes %= 60; |
| 167 | days = hours / 24; hours %= 24; |
| 168 | if (days) |
| 169 | (void) sprintf(resbuf, "%s %2d+%02d:%02d", |
| 170 | updown, days, hours, minutes); |
| 171 | else |
| 172 | (void) sprintf(resbuf, "%s %2d:%02d", |
| 173 | updown, hours, minutes); |
| 174 | return (resbuf); |
| 175 | } |
| 176 | |
| 177 | hscmp(h1, h2) |
| 178 | struct hs *h1, *h2; |
| 179 | { |
| 180 | |
| 181 | return (rflg * strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname)); |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Compare according to load average. |
| 186 | */ |
| 187 | lcmp(h1, h2) |
| 188 | struct hs *h1, *h2; |
| 189 | { |
| 190 | |
| 191 | if (down(h1)) |
| 192 | if (down(h2)) |
| 193 | return (tcmp(h1, h2)); |
| 194 | else |
| 195 | return (rflg); |
| 196 | else if (down(h2)) |
| 197 | return (-rflg); |
| 198 | else |
| 199 | return (rflg * |
| 200 | (h2->hs_wd->wd_loadav[0] - h1->hs_wd->wd_loadav[0])); |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Compare according to number of users. |
| 205 | */ |
| 206 | ucmp(h1, h2) |
| 207 | struct hs *h1, *h2; |
| 208 | { |
| 209 | |
| 210 | if (down(h1)) |
| 211 | if (down(h2)) |
| 212 | return (tcmp(h1, h2)); |
| 213 | else |
| 214 | return (rflg); |
| 215 | else if (down(h2)) |
| 216 | return (-rflg); |
| 217 | else |
| 218 | return (rflg * (h2->hs_nusers - h1->hs_nusers)); |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Compare according to uptime. |
| 223 | */ |
| 224 | tcmp(h1, h2) |
| 225 | struct hs *h1, *h2; |
| 226 | { |
| 227 | long t1, t2; |
| 228 | |
| 229 | return (rflg * ( |
| 230 | (down(h2) ? h2->hs_wd->wd_recvtime - now |
| 231 | : h2->hs_wd->wd_sendtime - h2->hs_wd->wd_boottime) |
| 232 | - |
| 233 | (down(h1) ? h1->hs_wd->wd_recvtime - now |
| 234 | : h1->hs_wd->wd_sendtime - h1->hs_wd->wd_boottime) |
| 235 | )); |
| 236 | } |