ntpd revision 326604
1#!/bin/sh 2# 3# $FreeBSD: stable/10/etc/rc.d/ntpd 326604 2017-12-06 00:00:37Z cy $ 4# 5 6# PROVIDE: ntpd 7# REQUIRE: DAEMON ntpdate FILESYSTEMS devfs 8# BEFORE: LOGIN 9# KEYWORD: nojail shutdown 10 11. /etc/rc.subr 12 13name="ntpd" 14rcvar="ntpd_enable" 15command="/usr/sbin/${name}" 16pidfile="/var/run/${name}.pid" 17extra_commands="fetch" 18fetch_cmd="ntpd_fetch_leapfile" 19start_precmd="ntpd_precmd" 20 21ntp_tmp_leapfile="/var/run/ntpd.leap-seconds.list" 22 23load_rc_config $name 24 25ntpd_precmd() 26{ 27 rc_flags="-c ${ntpd_config} ${ntpd_flags}" 28 29 if checkyesno ntpd_sync_on_start; then 30 rc_flags="-g $rc_flags" 31 fi 32 33 ntpd_init_leapfile 34 35 if [ ! -f $ntp_db_leapfile ]; then 36 ntpd_fetch_leapfile 37 fi 38 39 if [ -z "$ntpd_chrootdir" ]; then 40 return 0; 41 fi 42 43 # If running in a chroot cage, ensure that the appropriate files 44 # exist inside the cage, as well as helper symlinks into the cage 45 # from outside. 46 # 47 # As this is called after the is_running and required_dir checks 48 # are made in run_rc_command(), we can safely assume ${ntpd_chrootdir} 49 # exists and ntpd isn't running at this point (unless forcestart 50 # is used). 51 # 52 if [ ! -c "${ntpd_chrootdir}/dev/clockctl" ]; then 53 rm -f "${ntpd_chrootdir}/dev/clockctl" 54 ( cd /dev ; /bin/pax -rw -pe clockctl "${ntpd_chrootdir}/dev" ) 55 fi 56 ln -fs "${ntpd_chrootdir}/var/db/ntp.drift" /var/db/ntp.drift 57 ln -fs "${ntpd_chrootdir}${ntp_tmp_leapfile}" ${ntp_tmp_leapfile} 58 59 # Change run_rc_commands()'s internal copy of $ntpd_flags 60 # 61 rc_flags="-u ntpd:ntpd -i ${ntpd_chrootdir} $rc_flags" 62} 63 64current_ntp_ts() { 65 # Seconds between 1900-01-01 and 1970-01-01 66 # echo $(((70*365+17)*86400)) 67 ntp_to_unix=2208988800 68 69 echo $(($(date -u +%s)+$ntp_to_unix)) 70} 71 72get_ntp_leapfile_ver() { 73 # Leapfile update date (version number). 74 expr "$(awk '$1 == "#$" { print $2 }' "$1" 2>/dev/null)" : \ 75 '^\([1-9][0-9]*\)$' \| 0 76} 77 78get_ntp_leapfile_expiry() { 79 # Leapfile expiry date. 80 expr "$(awk '$1 == "#@" { print $2 }' "$1" 2>/dev/null)" : \ 81 '^\([1-9][0-9]*\)$' \| 0 82} 83 84ntpd_init_leapfile() { 85 # Refresh working leapfile with an invalid hash due to 86 # FreeBSD id header. Ntpd will ignore leapfiles with a 87 # mismatch hash. The file must be the virgin file from 88 # the source. 89 if [ ! -f $ntp_db_leapfile ]; then 90 cp -p $ntp_src_leapfile $ntp_db_leapfile 91 fi 92} 93 94ntpd_fetch_leapfile() { 95 local rc verbose 96 97 if checkyesno ntp_leapfile_fetch_verbose; then 98 verbose=echo 99 else 100 verbose=: 101 fi 102 103 ntp_ver_no_src=$(get_ntp_leapfile_ver $ntp_src_leapfile) 104 ntp_expiry_src=$(get_ntp_leapfile_expiry $ntp_src_leapfile) 105 ntp_ver_no_db=$(get_ntp_leapfile_ver $ntp_db_leapfile) 106 ntp_expiry_db=$(get_ntp_leapfile_expiry $ntp_db_leapfile) 107 $verbose ntp_src_leapfile version is $ntp_ver_no_src 108 $verbose ntp_db_leapfile version is $ntp_ver_no_db 109 110 if [ "$ntp_ver_no_src" -gt "$ntp_ver_no_db" -o \ 111 "$ntp_ver_no_src" -eq "$ntp_ver_no_db" -a \ 112 "$ntp_expiry_src" -gt "$ntp_expiry_db" ]; then 113 $verbose replacing $ntp_db_leapfile with $ntp_src_leapfile 114 cp -p $ntp_src_leapfile $ntp_db_leapfile 115 ntp_ver_no_db=$ntp_ver_no_src 116 else 117 $verbose not replacing $ntp_db_leapfile with $ntp_src_leapfile 118 fi 119 ntp_leapfile_expiry_seconds=$((ntp_leapfile_expiry_days*86400)) 120 ntp_leap_expiry=$(get_ntp_leapfile_expiry $ntp_db_leapfile) 121 ntp_leap_fetch_date=$((ntp_leap_expiry-ntp_leapfile_expiry_seconds)) 122 if [ $(current_ntp_ts) -ge $ntp_leap_fetch_date ]; then 123 $verbose Within ntp leapfile expiry limit, initiating fetch 124 for url in $ntp_leapfile_sources ; do 125 $verbose fetching $url 126 fetch $ntp_leapfile_fetch_opts -o $ntp_tmp_leapfile $url && break 127 done 128 ntp_ver_no_tmp=$(get_ntp_leapfile_ver $ntp_tmp_leapfile) 129 ntp_expiry_tmp=$(get_ntp_leapfile_expiry $ntp_tmp_leapfile) 130 if [ "$ntp_ver_no_tmp" -gt "$ntp_ver_no_db" -o \ 131 "$ntp_ver_no_tmp" -eq "$ntp_ver_no_db" -a \ 132 "$ntp_expiry_tmp" -gt "$ntp_expiry_db" ]; then 133 $verbose using $url as $ntp_db_leapfile 134 mv $ntp_tmp_leapfile $ntp_db_leapfile 135 else 136 $verbose using existing $ntp_db_leapfile 137 fi 138 fi 139} 140 141run_rc_command "$1" 142