1 #ifndef lint 2 static char sccsid[] = "@(#)ruptime.c 4.3 82/04/03"; 3 #endif 4 5 #include <sys/types.h> /* botch in ndir.h */ 6 #include <stdio.h> 7 #include <ndir.h> 8 #include <utmp.h> 9 #include "rwhod.h" 10 11 DIR *etc; 12 13 #define NHOSTS 100 14 int nhosts; 15 struct hs { 16 struct whod *hs_wd; 17 int hs_nusers; 18 } hs[NHOSTS]; 19 struct whod awhod; 20 int hscmp(); 21 22 #define WHDRSIZE (sizeof (awhod) - sizeof (awhod.wd_we)) 23 24 char *interval(); 25 int now; 26 char *malloc(), *sprintf(); 27 int aflg; 28 29 main(argc, argv) 30 int argc; 31 char **argv; 32 { 33 struct direct *dp; 34 int f, i, t; 35 char buf[BUFSIZ]; int cc; 36 register struct hs *hsp = hs; 37 register struct whod *wd; 38 register struct whoent *we; 39 int maxloadav = 0; 40 41 time(&t); 42 argc--, argv++; 43 again: 44 if (!strcmp(*argv, "-a")) { 45 aflg++; 46 argc--, argv++; 47 goto again; 48 } 49 if (chdir("/etc") < 0) { 50 perror("/etc"); 51 exit(1); 52 } 53 etc = opendir("."); 54 if (etc == NULL) { 55 perror("/etc"); 56 exit(1); 57 } 58 while (dp = readdir(etc)) { 59 if (dp->d_ino == 0) 60 continue; 61 if (strncmp(dp->d_name, "whod.", 5)) 62 continue; 63 if (nhosts == NHOSTS) { 64 fprintf(stderr, "too many hosts\n"); 65 exit(1); 66 } 67 f = open(dp->d_name, 0); 68 if (f > 0) { 69 cc = read(f, buf, BUFSIZ); 70 if (cc >= WHDRSIZE) { 71 hsp->hs_wd = (struct whod *)malloc(WHDRSIZE); 72 wd = (struct whod *)buf; 73 bcopy(buf, hsp->hs_wd, WHDRSIZE); 74 hsp->hs_nusers = 0; 75 for (i = 0; i < 2; i++) 76 if (wd->wd_loadav[i] > maxloadav) 77 maxloadav = wd->wd_loadav[i]; 78 we = (struct whoent *)(buf+cc); 79 while (--we >= wd->wd_we) 80 if (aflg || we->we_idle < 3600) 81 hsp->hs_nusers++; 82 nhosts++; hsp++; 83 } 84 } 85 (void) close(f); 86 } 87 qsort((char *)hs, nhosts, sizeof (hs[0]), hscmp); 88 (void) time(&now); 89 if (nhosts == 0) { 90 printf("no hosts!?!\n"); 91 exit(1); 92 } 93 for (i = 0; i < nhosts; i++) { 94 hsp = &hs[i]; 95 if (now - hsp->hs_wd->wd_recvtime > 5 * 60) { 96 printf("%-8.8s%s\n", hsp->hs_wd->wd_hostname, 97 interval(now - hsp->hs_wd->wd_recvtime, "down")); 98 continue; 99 } 100 printf("%-8.8s%s, %4d user%s load %*.2f, %*.2f, %*.2f\n", 101 hsp->hs_wd->wd_hostname, 102 interval(hsp->hs_wd->wd_sendtime - 103 hsp->hs_wd->wd_bootime, " up"), 104 hsp->hs_nusers, 105 hsp->hs_nusers == 1 ? ", " : "s,", 106 maxloadav >= 1000 ? 5 : 4, 107 hsp->hs_wd->wd_loadav[0] / 100.0, 108 maxloadav >= 1000 ? 5 : 4, 109 hsp->hs_wd->wd_loadav[1] / 100.0, 110 maxloadav >= 1000 ? 5 : 4, 111 hsp->hs_wd->wd_loadav[2] / 100.0); 112 cfree(hsp->hs_wd); 113 } 114 exit(0); 115 } 116 117 char * 118 interval(time, updown) 119 int time; 120 char *updown; 121 { 122 static char resbuf[32]; 123 int days, hours, minutes; 124 125 if (time < 0 || time > 3*30*24*60*60) { 126 (void) sprintf(resbuf, " %s ??:??", updown); 127 return (resbuf); 128 } 129 minutes = (time + 59) / 60; /* round to minutes */ 130 hours = minutes / 60; minutes %= 60; 131 days = hours / 24; hours %= 24; 132 if (days) 133 (void) sprintf(resbuf, "%s %2d+%02d:%02d", 134 updown, days, hours, minutes); 135 else 136 (void) sprintf(resbuf, " %s %2d:%02d", 137 updown, hours, minutes); 138 return (resbuf); 139 } 140 141 hscmp(h1, h2) 142 struct hs *h1, *h2; 143 { 144 145 return (strcmp(h1->hs_wd->wd_hostname, h2->hs_wd->wd_hostname)); 146 } 147