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#  -*- Mode: rpm-spec; indent-tabs-mode: nil -*- */
#
#  This file is part of systemd.
#
#  Copyright 2015 Zbigniew Jędrzejewski-Szmek
#
#  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.
#
#  systemd is distributed in the hope that it will be useful, but
#  WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#  Lesser General Public License for more details.
#
#  You should have received a copy of the GNU Lesser General Public License
#  along with systemd; If not, see <http://www.gnu.org/licenses/>.

# The contents of this are an example to be copied into systemd.spec.

%transfiletriggerin -P 900900 -p <lua> -- /usr/lib/systemd/system /etc/systemd/system
-- This script will run after any package is initially installed or
-- upgraded. We care about the case where a package is initially
-- installed, because other cases are covered by the *un scriptlets,
-- so sometimes we will reload needlessly.

pid = posix.fork()
if pid == 0 then
    assert(posix.exec("%{_bindir}/systemctl", "daemon-reload"))
elseif pid > 0 then
    posix.wait(pid)
end

%transfiletriggerun -p <lua> -- /usr/lib/systemd/system /etc/systemd/system
-- On removal, we need to run daemon-reload after any units have been
-- removed. %transfiletriggerpostun would be ideal, but it does not get
-- executed for some reason.
-- On upgrade, we need to run daemon-reload after any new unit files
-- have been installed, but before %postun scripts in packages get
-- executed. %transfiletriggerun gets the right list of files
-- but it is invoked too early (before changes happen).
-- %filetriggerpostun happens at the right time, but it fires for
-- every package.
-- To execute the reload at the right time, we create a state
-- file in %transfiletriggerun and execute the daemon-reload in
-- the first %filetriggerpostun.

posix.mkdir("%{_localstatedir}/lib")
posix.mkdir("%{_localstatedir}/lib/rpm-state")
posix.mkdir("%{_localstatedir}/lib/rpm-state/systemd")
io.open("%{_localstatedir}/lib/rpm-state/systemd/needs-reload", "w")

%filetriggerpostun -P 1000100 -p <lua> -- /usr/lib/systemd/system /etc/systemd/system
if posix.access("%{_localstatedir}/lib/rpm-state/systemd/needs-reload") then
    posix.unlink("%{_localstatedir}/lib/rpm-state/systemd/needs-reload")
    posix.rmdir("%{_localstatedir}/lib/rpm-state/systemd")
    pid = posix.fork()
    if pid == 0 then
        assert(posix.exec("%{_bindir}/systemctl", "daemon-reload"))
    elseif pid > 0 then
        posix.wait(pid)
    end
end