From 561123b07cedd44a5cf729a294438fd087ff5fc2 Mon Sep 17 00:00:00 2001
From: Benjamin Drung <benjamin.drung@cloud.ionos.com>
Date: Tue, 21 Jul 2020 15:24:19 +0200
Subject: [PATCH] Add systemd service

To unify the systemd services for opensm from the different
distributions, add `opensm.service` and `opensm@.service`.

The `opensm@.service` starts opensm on a given port. `opensm.service`
starts opensm for all available ports via the `opensm@.service`.

fixes #9
Signed-off-by: Benjamin Drung <benjamin.drung@cloud.ionos.com>
---
 .gitignore         |  1 +
 Makefile.am        |  6 ++++++
 configure.ac       |  7 +++++++
 opensm.service     | 13 +++++++++++++
 opensm@.service.in | 10 ++++++++++
 5 files changed, 37 insertions(+)
 create mode 100644 opensm.service
 create mode 100644 opensm@.service.in

diff --git a/.gitignore b/.gitignore
index bbee270b..eedec6c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,7 @@ Makefile.in
 man/opensm.8
 man/torus-2QoS.8
 man/torus-2QoS.conf.5
+opensm@.service
 opensm.spec
 opensm/opensm
 opensm/osm_qos_parser_l.c
diff --git a/Makefile.am b/Makefile.am
index 0bd48b48..9bb97e01 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,6 +19,12 @@ docs = doc/performance-manager-HOWTO.txt doc/QoS_management_in_OpenSM.txt \
 	doc/partition-config.txt doc/opensm-sriov.txt \
 	doc/current-routing.txt doc/opensm_release_notes-3.3.txt
 
+systemdunitdir = $(SYSTEMD_UNIT_DIR)
+systemdunit_DATA = opensm.service opensm@.service
+
+opensm@.service: opensm@.service.in
+	sed -e 's,@sbindir\@,$(sbindir),g' $< > $@
+
 EXTRA_DIST = autogen.sh opensm.spec $(various_scripts) $(man_MANS) $(docs)
 
 dist-hook: $(EXTRA_DIST)
diff --git a/configure.ac b/configure.ac
index 4633fbb1..d7389203 100644
--- a/configure.ac
+++ b/configure.ac
@@ -270,6 +270,13 @@ AC_DEFINE_UNQUOTED(HAVE_DEFAULT_PER_MOD_LOGGING_FILE,
         [Define a Per Module Logging config file])
 AC_SUBST(PER_MOD_LOGGING_FILE)
 
+SYSTEMD_UNIT_DIR=`pkg-config systemd --variable=systemdsystemunitdir`
+# Use default if SYSTEMD_DIR is empty
+if test x"$SYSTEMD_UNIT_DIR" = "x"; then
+    SYSTEMD_UNIT_DIR=/lib/systemd/system
+fi
+AC_SUBST([SYSTEMD_UNIT_DIR])
+
 dnl select example event plugin or not
 OPENIB_OSM_DEFAULT_EVENT_PLUGIN_SEL
 
diff --git a/opensm.service b/opensm.service
new file mode 100644
index 00000000..0f78f041
--- /dev/null
+++ b/opensm.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=Starts the OpenSM InfiniBand fabric Subnet Managers
+Documentation=man:opensm(8)
+Before=network.target remote-fs-pre.target
+ConditionPathExists=/sys/class/infiniband_mad/abi_version
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c 'PORTS=$(/usr/sbin/ibstat -p); if test -z "$PORTS"; then echo "No InfiniBand ports found."; exit 0; fi; echo "Starting opensm on following ports: $PORTS"; systemctl start $(echo $PORTS | sed -r "s/(\\w+)/opensm@\\1.service/g")'
+RemainAfterExit=on
+
+[Install]
+WantedBy=network-online.target
diff --git a/opensm@.service.in b/opensm@.service.in
new file mode 100644
index 00000000..aaf5dd2a
--- /dev/null
+++ b/opensm@.service.in
@@ -0,0 +1,10 @@
+[Unit]
+Description=Starts the OpenSM InfiniBand fabric Subnet Manager %I
+Documentation=man:opensm(8)
+Before=network.target remote-fs-pre.target
+PartOf=opensm.service
+ConditionPathExists=/sys/class/infiniband_mad/abi_version
+
+[Service]
+Type=simple
+ExecStart=@sbindir@/opensm --guid %I --log_file /var/log/opensm.%I.log