rpm: include RPM macro definition for .spec snippets

Let's try to standardize a bit the RPM macros used for
installing/uninstalling services.

This only covers the non-SysV compat bits, since that tends to vary
widely between the various distros.

Usage:

Add %{?systemd_requires} to the header of the spec file. And then:

%post
%systemd_post foobar.service

%preun
%systemd_preun foobar.service

%postun
%systemd_postun foobar.service

And, instead of the latter, in case the service shall be restarted on updates:

%postun
%systemd_postun_restart foobar.service

2 files changed, 56 insertions, 0 deletions

diff --git a/src/core/.gitignore b/src/core/.gitignore
index eef2e5971e..f293bbdc93 100644
--- a/src/core/.gitignore
+++ b/src/core/.gitignore
@@ -1 +1,2 @@
+/macros.systemd
 /systemd.pc
diff --git a/src/core/macros.systemd.in b/src/core/macros.systemd.in
new file mode 100644
index 0000000000..86e869307c
--- /dev/null
+++ b/src/core/macros.systemd.in
@@ -0,0 +1,55 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*- */
+#
+#  This file is part of systemd.
+#
+#  Copyright 2012 Lennart Poettering
+#
+#  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/>.
+
+# RPM macros for packages installing systemd unit files
+
+%_unitdir @systemunitdir@
+
+%systemd_requires \
+Requires(post): systemd \
+Requires(preun): systemd \
+Requires(postun): systemd \
+%{nil}
+
+%systemd_post() \
+if [ $1 -eq 1 ] ; then \
+        # Initial installation \
+        @rootbindir@/systemctl preset %{?*} >/dev/null 2>&1 || : \
+fi \
+%{nil}
+
+%systemd_preun() \
+if [ $1 -eq 0 ] ; then \
+        # Package removal, not upgrade \
+        @rootbindir@/systemctl --no-reload disable %{?*} > /dev/null 2>&1 || : \
+        @rootbindir@/systemctl stop %{?*} > /dev/null 2>&1 || : \
+fi \
+%{nil}
+
+%systemd_postun() \
+@rootbindir@/systemctl daemon-reload >/dev/null 2>&1 || : \
+%{nil}
+
+%systemd_postun_with_restart() \
+@rootbindir@/systemctl daemon-reload >/dev/null 2>&1 || : \
+if [ $1 -ge 1 ] ; then \
+        # Package upgrade, not uninstall \
+        @rootbindir@/systemctl try-restart %{?*} >/dev/null 2>&1 || : \
+fi \
+%{nil}