735c001b6b
When a system has no internet connection, or when it is configured to obtain ntpd leapfiles from some source other than the internet, or even when the sysadmin has decided for some reason to customize ntp.conf to eliminate use of the leapfile, the rc.d/ntpd script emits various error messages related to the file. This change allows setting the rc var ntp_db_leapfile to NONE to disable all automatic processing related to that file in rc.d/ntpd. Differential Revision: https://reviews.freebsd.org/D22461
241 lines
7.1 KiB
Bash
Executable File
241 lines
7.1 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
# PROVIDE: ntpd
|
|
# REQUIRE: DAEMON ntpdate FILESYSTEMS devfs
|
|
# BEFORE: LOGIN
|
|
# KEYWORD: nojail shutdown
|
|
|
|
. /etc/rc.subr
|
|
|
|
name="ntpd"
|
|
desc="Network Time Protocol daemon"
|
|
rcvar="ntpd_enable"
|
|
command="/usr/sbin/${name}"
|
|
extra_commands="fetch needfetch"
|
|
fetch_cmd="ntpd_fetch_leapfile"
|
|
needfetch_cmd="ntpd_needfetch_leapfile"
|
|
start_precmd="ntpd_precmd"
|
|
|
|
_ntp_tmp_leapfile="/var/run/ntpd.leap-seconds.list"
|
|
_ntp_default_dir="/var/db/ntp"
|
|
_ntp_default_driftfile="${_ntp_default_dir}/ntpd.drift"
|
|
_ntp_old_driftfile="/var/db/ntpd.drift"
|
|
|
|
pidfile="${_ntp_default_dir}/${name}.pid"
|
|
|
|
load_rc_config $name
|
|
|
|
leapfile_is_disabled() {
|
|
# Return true (0) if automatic leapfile handling is disabled.
|
|
case "$ntp_db_leapfile" in
|
|
[Nn][Oo] | [Nn][Oo][Nn][Ee] )
|
|
return 0;;
|
|
* )
|
|
return 1;;
|
|
esac
|
|
}
|
|
|
|
can_run_nonroot()
|
|
{
|
|
# If the admin set what uid to use, we don't change it.
|
|
if [ -n "${ntpd_user}" ]; then
|
|
return 1
|
|
fi
|
|
|
|
# If the admin set any command line options involving files, we
|
|
# may not be able to access them as user ntpd.
|
|
case "${rc_flags}" in
|
|
*-f* | *--driftfile* | *-i* | *--jaildir* | \
|
|
*-k* | *--keyfile* | *-l* | *--logfile* | \
|
|
*-p* | *--pidfile* | *-s* | *--statsdir* )
|
|
return 1;;
|
|
esac
|
|
|
|
# If the admin set any options in ntp.conf involving files,
|
|
# we may not be able to access them as user ntpd.
|
|
local fileopts="^[ \t]*crypto|^[ \t]*driftfile|^[ \t]*key|^[ \t]*logfile|^[ \t]*statsdir"
|
|
grep -E -q "${fileopts}" "${ntpd_config}" && return 1
|
|
|
|
# Try to set up the the MAC ntpd policy so ntpd can run with reduced
|
|
# privileges. Detect whether MAC is compiled into the kernel, load
|
|
# the policy module if not already present, then check whether the
|
|
# policy has been disabled via tunable or sysctl.
|
|
[ -n "$(sysctl -qn security.mac.version)" ] || return 1
|
|
sysctl -qn security.mac.ntpd >/dev/null || kldload -qn mac_ntpd || return 1
|
|
[ "$(sysctl -qn security.mac.ntpd.enabled)" == "1" ] || return 1
|
|
|
|
# On older existing systems, the ntp dir may by owned by root, change
|
|
# it to ntpd to give the daemon create/write access to the driftfile.
|
|
if [ "$(stat -f %u ${_ntp_default_dir})" = "0" ]; then
|
|
chown ntpd:ntpd "${_ntp_default_dir}" || return 1
|
|
chmod 0755 "${_ntp_default_dir}" || return 1
|
|
logger -s -t "rc.d/ntpd" -p daemon.notice \
|
|
"${_ntp_default_dir} updated to owner ntpd:ntpd, mode 0755"
|
|
fi
|
|
|
|
# If the driftfile exists in the standard location for older existing
|
|
# systems, move it into the ntp dir and fix the ownership if we can.
|
|
if [ -f "${_ntp_old_driftfile}" ] && [ ! -L "${_ntp_old_driftfile}" ]; then
|
|
mv "${_ntp_old_driftfile}" "${_ntp_default_driftfile}" &&
|
|
chown ntpd:ntpd "${_ntp_default_driftfile}" || return 1
|
|
logger -s -t "rc.d/ntpd" -p daemon.notice \
|
|
"${_ntp_default_driftfile} updated to owner ntpd:ntpd"
|
|
logger -s -t "rc.d/ntpd" -p daemon.notice \
|
|
"${_ntp_old_driftfile} moved to ${_ntp_default_driftfile}"
|
|
fi
|
|
}
|
|
|
|
ntpd_precmd()
|
|
{
|
|
local driftopt
|
|
|
|
# If we can run as a non-root user, switch uid to ntpd and use the
|
|
# new default location for the driftfile inside the ntpd-owned dir.
|
|
# Otherwise, figure out what to do about the driftfile option. If set
|
|
# by the admin, we don't add the option. If the file exists in the old
|
|
# default location we use that, else we use the new default location.
|
|
if can_run_nonroot; then
|
|
_user="ntpd"
|
|
driftopt="-f ${_ntp_default_driftfile}"
|
|
elif grep -q "^[ \t]*driftfile" "${ntpd_config}" ||
|
|
[ -n "${rc_flags}" ] &&
|
|
( [ -z "${rc_flags##*-f*}" ] ||
|
|
[ -z "${rc_flags##*--driftfile*}" ] ); then
|
|
driftopt="" # admin set the option, we don't need to add it.
|
|
elif [ -f "${_ntp_old_driftfile}" ]; then
|
|
driftopt="-f ${_ntp_old_driftfile}"
|
|
else
|
|
driftopt="-f ${_ntp_default_driftfile}"
|
|
fi
|
|
|
|
# Set command_args based on the various config vars.
|
|
command_args="-p ${pidfile} -c ${ntpd_config} ${driftopt}"
|
|
if checkyesno ntpd_sync_on_start; then
|
|
command_args="${command_args} -g"
|
|
fi
|
|
|
|
# Make sure the leapfile is ready to use, unless leapfile
|
|
# handling is disabled.
|
|
if leapfile_is_disabled; then
|
|
return
|
|
fi
|
|
|
|
ntpd_init_leapfile
|
|
if [ ! -f "${ntp_db_leapfile}" ]; then
|
|
ntpd_fetch_leapfile
|
|
fi
|
|
}
|
|
|
|
current_ntp_ts() {
|
|
# Seconds between 1900-01-01 and 1970-01-01
|
|
# echo $(((70*365+17)*86400))
|
|
ntp_to_unix=2208988800
|
|
|
|
echo $(($(date -u +%s)+$ntp_to_unix))
|
|
}
|
|
|
|
get_ntp_leapfile_ver() {
|
|
# Leapfile update date (version number).
|
|
expr "$(awk '$1 == "#$" { print $2 }' "$1" 2>/dev/null)" : \
|
|
'^\([1-9][0-9]*\)$' \| 0
|
|
}
|
|
|
|
get_ntp_leapfile_expiry() {
|
|
# Leapfile expiry date.
|
|
expr "$(awk '$1 == "#@" { print $2 }' "$1" 2>/dev/null)" : \
|
|
'^\([1-9][0-9]*\)$' \| 0
|
|
}
|
|
|
|
ntpd_init_leapfile() {
|
|
|
|
if leapfile_is_disabled; then
|
|
return
|
|
fi
|
|
|
|
# Refresh working leapfile with an invalid hash due to
|
|
# FreeBSD id header. Ntpd will ignore leapfiles with a
|
|
# mismatch hash. The file must be the virgin file from
|
|
# the source.
|
|
if [ ! -f $ntp_db_leapfile ]; then
|
|
cp -p $ntp_src_leapfile $ntp_db_leapfile
|
|
fi
|
|
}
|
|
|
|
ntpd_needfetch_leapfile() {
|
|
local rc verbose
|
|
|
|
if leapfile_is_disabled; then
|
|
# Return code 1: ntp leapfile fetch not needed
|
|
return 1
|
|
fi
|
|
|
|
if checkyesno ntp_leapfile_fetch_verbose; then
|
|
verbose=echo
|
|
else
|
|
verbose=:
|
|
fi
|
|
|
|
ntp_ver_no_src=$(get_ntp_leapfile_ver $ntp_src_leapfile)
|
|
ntp_expiry_src=$(get_ntp_leapfile_expiry $ntp_src_leapfile)
|
|
ntp_ver_no_db=$(get_ntp_leapfile_ver $ntp_db_leapfile)
|
|
ntp_expiry_db=$(get_ntp_leapfile_expiry $ntp_db_leapfile)
|
|
$verbose ntp_src_leapfile version is $ntp_ver_no_src expires $ntp_expiry_src
|
|
$verbose ntp_db_leapfile version is $ntp_ver_no_db expires $ntp_expiry_db
|
|
|
|
if [ "$ntp_ver_no_src" -gt "$ntp_ver_no_db" -o \
|
|
"$ntp_ver_no_src" -eq "$ntp_ver_no_db" -a \
|
|
"$ntp_expiry_src" -gt "$ntp_expiry_db" ]; then
|
|
$verbose replacing $ntp_db_leapfile with $ntp_src_leapfile
|
|
cp -p $ntp_src_leapfile $ntp_db_leapfile
|
|
ntp_ver_no_db=$ntp_ver_no_src
|
|
else
|
|
$verbose not replacing $ntp_db_leapfile with $ntp_src_leapfile
|
|
fi
|
|
ntp_leapfile_expiry_seconds=$((ntp_leapfile_expiry_days*86400))
|
|
ntp_leap_expiry=$(get_ntp_leapfile_expiry $ntp_db_leapfile)
|
|
ntp_leap_fetch_date=$((ntp_leap_expiry-ntp_leapfile_expiry_seconds))
|
|
if [ $(current_ntp_ts) -ge $ntp_leap_fetch_date ]; then
|
|
$verbose Within ntp leapfile expiry limit, initiating fetch
|
|
# Return code 0: ntp leapfile fetch needed
|
|
return 0
|
|
fi
|
|
# Return code 1: ntp leapfile fetch not needed
|
|
return 1
|
|
}
|
|
|
|
ntpd_fetch_leapfile() {
|
|
|
|
if leapfile_is_disabled; then
|
|
return
|
|
fi
|
|
|
|
if checkyesno ntp_leapfile_fetch_verbose; then
|
|
verbose=echo
|
|
else
|
|
verbose=:
|
|
fi
|
|
|
|
if ntpd_needfetch_leapfile ; then
|
|
for url in $ntp_leapfile_sources ; do
|
|
$verbose fetching $url
|
|
fetch $ntp_leapfile_fetch_opts -o $_ntp_tmp_leapfile $url && break
|
|
done
|
|
ntp_ver_no_tmp=$(get_ntp_leapfile_ver $_ntp_tmp_leapfile)
|
|
ntp_expiry_tmp=$(get_ntp_leapfile_expiry $_ntp_tmp_leapfile)
|
|
if [ "$ntp_expiry_tmp" -gt "$ntp_expiry_db" -o \
|
|
"$ntp_expiry_tmp" -eq "$ntp_expiry_db" -a \
|
|
"$ntp_ver_no_tmp" -gt "$ntp_ver_no_db" ]; then
|
|
$verbose using $url as $ntp_db_leapfile
|
|
mv -f $_ntp_tmp_leapfile $ntp_db_leapfile ||
|
|
$verbose "warning: cannot replace $ntp_db_leapfile (read-only fs?)"
|
|
else
|
|
$verbose using existing $ntp_db_leapfile
|
|
fi
|
|
fi
|
|
}
|
|
|
|
run_rc_command "$1"
|