| 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 = "https://chrony.tuxfamily.org/" |
| SECTION = "net" |
| LICENSE = "GPL-2.0-only" |
| LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe" |
| |
| SRC_URI = "https://download.tuxfamily.org/chrony/chrony-${PV}.tar.gz \ |
| file://chrony.conf \ |
| file://chronyd \ |
| file://arm_eabi.patch \ |
| " |
| |
| SRC_URI:append:libc-musl = " \ |
| file://0001-Fix-compilation-with-musl.patch \ |
| " |
| SRC_URI[sha256sum] = "9d0da889a865f089a5a21610ffb6713e3c9438ce303a63b49c2fb6eaff5b8804" |
| |
| DEPENDS = "pps-tools" |
| |
| # Note: Despite being built via './configure; make; make install', |
| # chrony does not use GNU Autotools. |
| inherit update-rc.d systemd pkgconfig |
| |
| # Add chronyd user if privdrop packageconfig is selected |
| inherit ${@bb.utils.contains('PACKAGECONFIG', 'privdrop', 'useradd', '', d)} |
| USERADD_PACKAGES = "${@bb.utils.contains('PACKAGECONFIG', 'privdrop', '${PN}', '', d)}" |
| USERADD_PARAM:${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'privdrop', '--system -d / -M --shell /bin/nologin chronyd;', '', d)}" |
| |
| # 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 \ |
| ${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)} \ |
| " |
| PACKAGECONFIG[readline] = "--without-editline,--disable-readline,readline" |
| PACKAGECONFIG[editline] = ",--without-editline,libedit" |
| PACKAGECONFIG[sechash] = "--without-tomcrypt,--disable-sechash,nss" |
| PACKAGECONFIG[privdrop] = "--with-libcap,--disable-privdrop --without-libcap,libcap" |
| PACKAGECONFIG[scfilter] = "--enable-scfilter,--without-seccomp,libseccomp" |
| PACKAGECONFIG[ipv6] = ",--disable-ipv6," |
| PACKAGECONFIG[nss] = "--with-nss,--without-nss,nss" |
| PACKAGECONFIG[libcap] = "--with-libcap,--without-libcap,libcap" |
| |
| # --disable-static isn't supported by chrony's configure script. |
| DISABLE_STATIC = "" |
| |
| do_configure() { |
| ./configure --sysconfdir=${sysconfdir} --bindir=${bindir} --sbindir=${sbindir} \ |
| --localstatedir=${localstatedir} --datarootdir=${datadir} \ |
| --with-ntp-era=$(shell date -d '1970-01-01 00:00:00+00:00' +'%s') \ |
| --with-pidfile=/run/chrony/chronyd.pid \ |
| --chronyrundir=/run/chrony \ |
| --host-system=Linux \ |
| ${PACKAGECONFIG_CONFARGS} |
| } |
| |
| 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} |
| if ${@bb.utils.contains('PACKAGECONFIG', 'privdrop', 'true', 'false', d)}; then |
| echo "# Define user to drop to after dropping root privileges" >> ${D}${sysconfdir}/chrony.conf |
| echo "user chronyd" >> ${D}${sysconfdir}/chrony.conf |
| fi |
| |
| # 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 |
| |
| # 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 |
| |
| install -d ${D}${sysconfdir}/tmpfiles.d |
| echo "d /var/lib/chrony 0755 root root -" > ${D}${sysconfdir}/tmpfiles.d/chronyd.conf |
| |
| } |
| |
| FILES:${PN} = "${sbindir}/chronyd ${sysconfdir} ${localstatedir}/lib/chrony ${localstatedir}" |
| CONFFILES:${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" |