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timedated: introduce systemd-timedated-ntp.target which is controlled by timedated's NTP setting

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We shouldn't hardcode the name of the NTP implementation in the
timedated mechanism, especially since Fedora currently switched from NTP
to chrony.

This patch introduces a new target that is enabled/disabled instead of
the actual NTP implementation. The various NTP implementations should
then add .wants/ symlinks to their services and BindTo back to the
target, so that their implementations are started/stopped jointly with
the target.

https://bugzilla.redhat.com/show_bug.cgi?id=815748
This commit is contained in:
Lennart Poettering 2012-04-25 16:49:02 +02:00
parent bc2f673ec2
commit e2875c4693
3 changed files with 22 additions and 4 deletions
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3
Makefile.am
View file

@ -297,7 +297,8 @@ dist_systemunit_DATA = \
units/systemd-ask-password-console.path \
units/syslog.target \
units/systemd-udev-control.socket \
units/systemd-udev-kernel.socket
units/systemd-udev-kernel.socket \
units/systemd-timedated-ntp.target
nodist_systemunit_DATA = \
units/getty@.service \

6
src/timedate/timedated.c
View file

@ -304,7 +304,7 @@ static int write_data_local_rtc(void) {
static int read_ntp(DBusConnection *bus) {
DBusMessage *m = NULL, *reply = NULL;
const char *name = "ntpd.service", *s;
const char *name = "systemd-timedated-ntp.target", *s;
DBusError error;
int r;
@ -374,7 +374,7 @@ finish:
static int start_ntp(DBusConnection *bus, DBusError *error) {
DBusMessage *m = NULL, *reply = NULL;
const char *name = "ntpd.service", *mode = "replace";
const char *name = "systemd-timedated-ntp.target", *mode = "replace";
int r;
assert(bus);
@ -421,7 +421,7 @@ finish:
static int enable_ntp(DBusConnection *bus, DBusError *error) {
DBusMessage *m = NULL, *reply = NULL;
const char * const names[] = { "ntpd.service", NULL };
const char * const names[] = { "systemd-timedated-ntp.target", NULL };
int r;
DBusMessageIter iter;
dbus_bool_t f = FALSE, t = TRUE;

17
units/systemd-timedated-ntp.target Normal file
View file

@ -0,0 +1,17 @@
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
# This target is enabled/disabled via the timedated mechanism when the
# user asks for it via the UI. NTP implementations should hook
# themselves into this target via .wants/ symlinks, and then add
# BindTo= on this target so that they are stopped when it goes away.
[Unit]
Description=Network Time Protocol
[Install]
WantedBy=multi-user.target