From 9cd117a5dc5f26133a855d1cc3bf9604ae178685 Mon Sep 17 00:00:00 2001 From: Henry Hallam Date: Wed, 15 Jun 2016 11:17:27 -0700 Subject: chrony: Versatile implementation of NTP chrony is an alternative to ntpd. In particular it may be useful for quasi-realtime embedded systems that have a pulse-per-second time reference available and need to rapidly synchronize to it after boot, which appears to be unachievable with ntpd. Signed-off-by: Henry Hallam Reviewed-by: Koen Kooi Signed-off-by: Joe MacDonald --- .../recipes-support/chrony/chrony/chrony.conf | 44 +++++++ .../recipes-support/chrony/chrony/chronyd | 58 ++++++++++ .../recipes-support/chrony/chrony_2.4.bb | 127 +++++++++++++++++++++ 3 files changed, 229 insertions(+) create mode 100644 meta-networking/recipes-support/chrony/chrony/chrony.conf create mode 100644 meta-networking/recipes-support/chrony/chrony/chronyd create mode 100644 meta-networking/recipes-support/chrony/chrony_2.4.bb diff --git a/meta-networking/recipes-support/chrony/chrony/chrony.conf b/meta-networking/recipes-support/chrony/chrony/chrony.conf new file mode 100644 index 0000000000..8d226d31a5 --- /dev/null +++ b/meta-networking/recipes-support/chrony/chrony/chrony.conf @@ -0,0 +1,44 @@ +# Use public NTP servers from the pool.ntp.org project. +# Please consider joining the pool project if possible by running your own +# server(s). +# If you are a vendor distributing a product using chrony, you *MUST* +# read and comply with http://www.pool.ntp.org/vendors.html +pool 0.openembedded.pool.ntp.org iburst + +# Use a local timeserver in preference to the pool, if it's reachable. +#server 192.168.22.22 iburst minpoll 2 prefer + +# Sync to pulse-per-second from an onboard GPS. +#refclock PPS /dev/pps0 poll 0 prefer +# You'll want to enable CONFIG_PPS and CONFIG_PPS_CLIENT_GPIO in your kernel, +# and an entry something like this in your device tree: +# pps { +# compatible = "pps-gpio"; +# gpios = <&ps7_gpio_0 56 0>; +# }; + +# In first three updates step the system clock instead of slew +# if the adjustment is larger than 1 second. +makestep 1.0 3 + +# Record the rate at which the system clock gains/loses time, +# improving accuracy after reboot +driftfile /var/lib/chrony/drift + +# Enable kernel synchronization of the hardware real-time clock (RTC). +rtcsync + +# Allow NTP client access from local network. +#allow 192.168/16 + +# Serve time even if not synchronized to any NTP server. +#local stratum 10 + +# Specify file containing keys for NTP authentication. +#keyfile /etc/chrony.keys + +# Specify directory for log files. +logdir /var/log/chrony + +# Select which information is logged. +#log measurements statistics tracking diff --git a/meta-networking/recipes-support/chrony/chrony/chronyd b/meta-networking/recipes-support/chrony/chrony/chronyd new file mode 100644 index 0000000000..04f1b681c4 --- /dev/null +++ b/meta-networking/recipes-support/chrony/chrony/chronyd @@ -0,0 +1,58 @@ +#! /bin/sh + +# System V init script for chrony +# Adapted from the script already in meta-networking for ntpd + +### BEGIN INIT INFO +# Provides: chrony +# Required-Start: $network $remote_fs $syslog +# Required-Stop: $network $remote_fs $syslog +# Default-Start: 2 3 4 5 +# Default-Stop: +# Short-Description: Start chrony time daemon +### END INIT INFO + +PATH=/sbin:/bin:/usr/bin:/usr/sbin + +DAEMON=/usr/sbin/chronyd +PIDFILE=/var/run/chronyd.pid + +test -x $DAEMON -a -r /etc/chrony.conf || exit 0 + +# Source function library. +. /etc/init.d/functions + +# Functions to do individual actions +startdaemon(){ + echo -n "Starting chronyd: " + start-stop-daemon --start --quiet --oknodo --pidfile $PIDFILE --startas $DAEMON -- "$@" + echo "done" +} +stopdaemon(){ + echo -n "Stopping chronyd: " + start-stop-daemon --stop --quiet --oknodo -p $PIDFILE + echo "done" +} + +case "$1" in + start) + startdaemon + ;; + stop) + stopdaemon + ;; + force-reload | restart | reload) + stopdaemon + startdaemon + ;; + status) + status /usr/sbin/chronyd; + exit $? + ;; + *) + echo "Usage: chronyd { start | stop | status | restart | reload }" >&2 + exit 1 + ;; +esac + +exit 0 diff --git a/meta-networking/recipes-support/chrony/chrony_2.4.bb b/meta-networking/recipes-support/chrony/chrony_2.4.bb new file mode 100644 index 0000000000..aa37caa418 --- /dev/null +++ b/meta-networking/recipes-support/chrony/chrony_2.4.bb @@ -0,0 +1,127 @@ +SUMMARY = "Versatile implementation of the Network Time Protocol" +DESCRIPTION = "Chrony can synchronize the system clock with NTP \ +servers, reference clocks (e.g. GPS receiver), and manual input using \ +wristwatch and keyboard. It can also operate as an NTPv4 (RFC 5905) \ +server and peer to provide a time service to other computers in the \ +network. \ +\ +It is designed to perform well in a wide range of conditions, \ +including intermittent network connections, heavily congested \ +networks, changing temperatures (ordinary computer clocks are \ +sensitive to temperature), and systems that do not run continuously, or \ +run on a virtual machine. \ +\ +Typical accuracy between two machines on a LAN is in tens, or a few \ +hundreds, of microseconds; over the Internet, accuracy is typically \ +within a few milliseconds. With a good hardware reference clock \ +sub-microsecond accuracy is possible. \ +\ +Two programs are included in chrony: chronyd is a daemon that can be \ +started at boot time and chronyc is a command-line interface program \ +which can be used to monitor chronyd's performance and to change \ +various operating parameters whilst it is running. \ +\ +This recipe produces two binary packages: 'chrony' which contains chronyd, \ +the configuration file and the init script, and 'chronyc' which contains \ +the client program only." + +HOMEPAGE = "http://chrony.tuxfamily.org/" +SECTION = "net" +LICENSE = "GPLv2" +LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe" + +SRC_URI = "https://download.tuxfamily.org/chrony/chrony-${PV}.tar.gz \ + file://chrony.conf \ + file://chronyd" +SRC_URI[md5sum] = "d0598aa8a9be8faccef9386f6fc0d5f2" +SRC_URI[sha256sum] = "8d04e7cda2333289c2104b731d39c3c1db94816e43bae35d7ee4e7ae8af6391f" + +DEPENDS = "pps-tools" + +# Note: Despite being built via './configure; make; make install', +# chrony does not use GNU Autotools. +inherit update-rc.d systemd + +# Configuration options: +# - For command line editing support in chronyc, you may specify either +# 'editline' or 'readline' but not both. editline is smaller, but +# many systems already have readline for other purposes so you might want +# to choose that instead. However, beware license incompatibility +# since chrony is GPLv2 and readline versions after 6.0 are GPLv3+. +# You can of course choose neither, but if you're that tight on space +# consider dropping chronyc entirely (you can use it remotely with +# appropriate chrony.conf options). +# - Security-related: +# - 'sechash' is omitted by default because it pulls in nss which is huge. +# - 'privdrop' allows chronyd to run as non-root; would need changes to +# chrony.conf and init script. +# - 'scfilter' enables support for system call filtering, but requires the +# kernel to have CONFIG_SECCOMP enabled. +PACKAGECONFIG ??= "editline scfilter" +PACKAGECONFIG[readline] = "--without-editline,--without-readline,readline" +PACKAGECONFIG[editline] = ",--without-editline,libedit" +PACKAGECONFIG[sechash] = "--without-tomcrypt,--disable-sechash,nss" +PACKAGECONFIG[privdrop] = ",--disable-privdrop,libcap" +PACKAGECONFIG[scfilter] = "--enable-scfilter,--without-seccomp" + +# --disable-static isn't supported by chrony's configure script. +DISABLE_STATIC = "" + +do_configure() { + ./configure --sysconfdir=${sysconfdir} --bindir=${bindir} --sbindir=${sbindir} \ + --localstatedir=${localstatedir} --datarootdir=${datadir} \ + ${EXTRA_OECONF} +} + +do_install() { + # Binaries + install -d ${D}${bindir} + install -m 0755 ${S}/chronyc ${D}${bindir} + install -d ${D}${sbindir} + install -m 0755 ${S}/chronyd ${D}${sbindir} + + # Config file + install -d ${D}${sysconfdir} + install -m 644 ${WORKDIR}/chrony.conf ${D}${sysconfdir} + + # System V init script + install -d ${D}${sysconfdir}/init.d + install -m 755 ${WORKDIR}/chronyd ${D}${sysconfdir}/init.d + + # systemd unit configuration file + install -d ${D}${systemd_unitdir}/system + install -m 0644 ${S}/examples/chronyd.service ${D}${systemd_unitdir}/system/ + + # Variable data (for drift and/or rtc file) + install -d ${D}${localstatedir}/lib/chrony + + # Log files + install -d ${D}${localstatedir}/log/chrony + + # Fix hard-coded paths in config files and init scripts + sed -i -e 's!/var/!${localstatedir}/!g' -e 's!/etc/!${sysconfdir}/!g' \ + -e 's!/usr/sbin/!${sbindir}/!g' -e 's!/usr/bin/!${bindir}/!g' \ + ${D}${sysconfdir}/chrony.conf \ + ${D}${sysconfdir}/init.d/chronyd \ + ${D}${systemd_unitdir}/system/chronyd.service + sed -i 's!^PATH=.*!PATH=${base_sbindir}:${base_bindir}:${sbindir}:${bindir}!' ${D}${sysconfdir}/init.d/chronyd + sed -i 's!^EnvironmentFile=.*!EnvironmentFile=-${sysconfdir}/default/chronyd!' ${D}${systemd_unitdir}/system/chronyd.service +} + +FILES_${PN} = "${sbindir}/chronyd ${sysconfdir} ${localstatedir}" +CONFFILES_${PN} = "${sysconfdir}/chrony.conf" +INITSCRIPT_NAME = "chronyd" +INITSCRIPT_PARAMS = "defaults" +SYSTEMD_PACKAGES = "${PN}" +SYSTEMD_SERVICE_${PN} = "chronyd.service" + +# It's probably a bad idea to run chrony and another time daemon on +# the same system. systemd includes the SNTP client 'timesyncd', which +# will be disabled by chronyd.service, however it will remain on the rootfs +# wasting 150 kB unless you put 'PACKAGECONFIG_remove_pn-systemd = "timesyncd"' +# in a conf file or bbappend somewhere. +RCONFLICTS_${PN} = "ntp ntimed" + +# Separate the client program into its own package +PACKAGES =+ "chronyc" +FILES_chronyc = "${bindir}/chronyc" -- cgit 1.2.3-korg