1 /* $NetBSD: globals.h,v 1.12 2022/10/16 16:58:54 rillig Exp $ */ 2 3 /*- 4 * Copyright (c) 1985 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)globals.h 8.1 (Berkeley) 6/6/93 32 */ 33 34 #include <sys/param.h> 35 #include <sys/time.h> 36 #include <sys/socket.h> 37 #include <sys/poll.h> 38 39 #include <netinet/in.h> 40 #include <arpa/inet.h> 41 42 #include <errno.h> 43 #include <limits.h> 44 #include <netdb.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <syslog.h> 49 #include <unistd.h> 50 51 #include <protocols/timed.h> 52 #define SECHR (60*60) 53 #define SECDAY (24*SECHR) 54 55 extern int sock; 56 57 /* Best expected round trip for a measurement. 58 * This is essentially the number of milliseconds per CPU tick (CLK_TCK?). 59 * All delays shorter than this are usually reported as 0. 60 */ 61 #define MIN_ROUND ((1000-1)/CLK_TCK) 62 63 64 #define SAMPLEINTVL 240 /* synch() freq for master in sec */ 65 #define MAXADJ 20 /* max adjtime() correction in sec */ 66 67 #define MAX_TRIM 3000000 /* max drift in nsec/sec, 0.3% */ 68 #define BIG_ADJ (MAX_TRIM/1000*SAMPLEINTVL*2) /* max good adj */ 69 70 #define MINTOUT 360 /* election delays, 6-15 minutes */ 71 #define MAXTOUT 900 72 73 #define BAD_STATUS (-1) 74 #define GOOD 1 75 #define UNREACHABLE 2 76 #define NONSTDTIME 3 77 #define HOSTDOWN 0x7fffffff 78 79 #define OFF 0 80 #define ON 1 81 82 #define MAX_HOPCNT 10 /* max value for tsp_hpcnt */ 83 84 #define LOSTHOST 3 /* forget after this many failures */ 85 86 #define VALID_RANGE (MAXADJ*1000) /* good times in milliseconds */ 87 #define GOOD_RANGE (MIN_ROUND*2) 88 #define VGOOD_RANGE (MIN_ROUND-1) 89 90 91 /* 92 * Global and per-network states. 93 */ 94 #define NOMASTER 0 /* no good master */ 95 #define SLAVE 1 96 #define MASTER 2 97 #define IGNORE 4 98 #define ALL (SLAVE|MASTER|IGNORE) 99 #define SUBMASTER (SLAVE|MASTER) 100 101 #define NHOSTS 1013 /* max of hosts controlled by timed 102 * This must be a prime number. 103 */ 104 struct hosttbl { 105 struct hosttbl *h_bak; /* hash chain */ 106 struct hosttbl *h_fwd; 107 struct hosttbl *l_bak; /* "sequential" list */ 108 struct hosttbl *l_fwd; 109 struct netinfo *ntp; 110 struct sockaddr_in addr; 111 char name[MAXHOSTNAMELEN+1]; 112 u_char head; /* 1=head of hash chain */ 113 u_char good; /* 0=trusted host, for averaging */ 114 u_char noanswer; /* count of failures to answer */ 115 u_char need_set; /* need a SETTIME */ 116 u_short seq; 117 long delta; 118 }; 119 120 /* closed hash table with internal chaining */ 121 extern struct hosttbl hosttbl[NHOSTS+1]; 122 #define self hosttbl[0] 123 #define hostname (self.name) 124 125 126 struct netinfo { 127 struct netinfo *next; 128 struct in_addr net; 129 in_addr_t mask; 130 struct in_addr my_addr; 131 struct sockaddr_in dest_addr; /* broadcast addr or point-point */ 132 long status; 133 struct timeval slvwait; /* delay before sending our time */ 134 int quit_count; /* recent QUITs */ 135 }; 136 137 #include "timed-extern.h" 138 139 #define tvtomsround(tv) ((tv).tv_sec*1000 + ((tv).tv_usec + 500)/1000) 140 141 extern struct netinfo *nettab; 142 extern int status; 143 extern int trace; 144 extern int sock; 145 extern struct sockaddr_in from; 146 extern struct timeval from_when; /* when the last msg arrived */ 147 extern u_short sequence; /* TSP message sequence number */ 148 extern struct netinfo *fromnet, *slavenet; 149 extern FILE *fd; 150 extern long delay1, delay2; 151 extern int nslavenets; /* nets where I could be a slave */ 152 extern int nmasternets; /* nets where I could be a master */ 153 extern int nignorednets; /* ignored nets */ 154 extern int nnets; /* nets I am connected to */ 155 156 157 #define trace_msg(msg) {if (trace) fprintf(fd, msg);} 158 159 #define trace_sendto_err(addr) { \ 160 int st_errno = errno; \ 161 syslog(LOG_ERR, "sendto %s: %m", inet_ntoa(addr)); \ 162 if (trace) \ 163 fprintf(fd, "%s %d: sendto %s: %d", __FILE__, __LINE__, \ 164 inet_ntoa(addr), st_errno); \ 165 } 166 167 168 # define max(a,b) (a<b ? b : a) 169 # define min(a,b) (a>b ? b : a) 170 # define abs(x) (x>=0 ? x : -(x)) 171
Indexes created Mon Sep 22 05:09:51 GMT 2025