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Convert file trigger scripts to lua

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At least the %filetriggerpostun script can be invoked hundreds of
times during an upgrade, so it makes sense to optimize it a bit.

assert(exec(...)) is used because of https://bugzilla.redhat.com/show_bug.cgi?id=1094072.

Add -P (--priority) to have %filetriggerpostun run as early as
possible (before any reload/stop actions), and %transfiletriggerin as
late as possible (after any enable/disable/preset actions).
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2015-11-22 20:14:21 -05:00
parent b7cf9ac00a
commit 12dde791d5
1 changed files with 39 additions and 27 deletions
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66
src/core/triggers.systemd.in
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@ -19,34 +19,46 @@
# The contents of this are an example to be copied into systemd.spec. # The contents of this are an example to be copied into systemd.spec.
# This will run after any package is initially installed or %transfiletriggerin -P 900900 -p <lua> -- @systemunitdir@ /etc/systemd/system
# upgraded. We care about the case where a package is initially -- This script will run after any package is initially installed or
# installed, because other cases are covered by the scriptlets below, -- upgraded. We care about the case where a package is initially
# so sometimes we will reload needlessly. -- installed, because other cases are covered by the *un scriptlets,
-- so sometimes we will reload needlessly.
%transfiletriggerin -- @systemunitdir@ /etc/systemd/system pid = posix.fork()
systemctl daemon-reload &>/dev/null || : if pid == 0 then
assert(posix.exec("%{_bindir}/systemctl", "daemon-reload"))
elseif pid > 0 then
posix.wait(pid)
end
# On removal, we need to run daemon-reload after any units have been %transfiletriggerun -p <lua> -- @systemunitdir@ /etc/systemd/system
# removed. %transfiletriggerpostun would be ideal, but it does not get -- On removal, we need to run daemon-reload after any units have been
# executed for some reason. -- removed. %transfiletriggerpostun would be ideal, but it does not get
# On upgrade, we need to run daemon-reload after any new unit files -- executed for some reason.
# have been installed, but before %postun scripts in packages get -- On upgrade, we need to run daemon-reload after any new unit files
# executed. %transfiletriggerun gets the right list of files -- have been installed, but before %postun scripts in packages get
# but it is invoked too early (before changes happen). -- executed. %transfiletriggerun gets the right list of files
# %filetriggerpostun happens at the right time, but it fires for -- but it is invoked too early (before changes happen).
# every package. -- %filetriggerpostun happens at the right time, but it fires for
# To execute the reload at the right time, we create a state -- every package.
# file in %transfiletriggerun and execute the daemon-reload in -- To execute the reload at the right time, we create a state
# the first %filetriggerpostun. -- file in %transfiletriggerun and execute the daemon-reload in
-- the first %filetriggerpostun.
%transfiletriggerun -- @systemunitdir@ /etc/systemd/system posix.mkdir("%{_localstatedir}/lib")
mkdir -p %{_localstatedir}/lib/rpm-state/systemd posix.mkdir("%{_localstatedir}/lib/rpm-state")
touch %{_localstatedir}/lib/rpm-state/systemd/needs-reload posix.mkdir("%{_localstatedir}/lib/rpm-state/systemd")
io.open("%{_localstatedir}/lib/rpm-state/systemd/needs-reload", "w")
%filetriggerpostun -- @systemunitdir@ /etc/systemd/system %filetriggerpostun -P 1000100 -p <lua> -- @systemunitdir@ /etc/systemd/system
if [ -e %{_localstatedir}/lib/rpm-state/systemd/needs-reload ]; then if posix.access("%{_localstatedir}/lib/rpm-state/systemd/needs-reload") then
rm %{_localstatedir}/lib/rpm-state/systemd/needs-reload || : posix.unlink("%{_localstatedir}/lib/rpm-state/systemd/needs-reload")
rmdir %{_localstatedir}/lib/rpm-state/systemd || : posix.rmdir("%{_localstatedir}/lib/rpm-state/systemd")
systemctl daemon-reload || : pid = posix.fork()
fi if pid == 0 then
assert(posix.exec("%{_bindir}/systemctl", "daemon-reload"))
elseif pid > 0 then
posix.wait(pid)
end
end