aboutsummaryrefslogtreecommitdiffstats
path: root/meta-networking/recipes-support/chrony/chrony_2.4.bb
blob: ad81701990267ef0f5882505c8cb420ad4bc77b0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
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 \
    ${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)} \
"
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"
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} \
                ${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}

    # 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"