Systemd Wrapper: to be called from unit file

1 files changed, 91 insertions, 0 deletions

diff --git a/sh/systemd-wrapper.sh.in b/sh/systemd-wrapper.sh.in
new file mode 100644
index 0000000..d931200
--- /dev/null
+++ b/sh/systemd-wrapper.sh.in
@@ -0,0 +1,91 @@
+#!/bin/sh
+
+CONFDIR="@CONFDIR@"
+LIBEXECDIR="@LIBEXECDIR@/sh"
+INITDIR="@INITDIR@"
+INIT=systemd
+
+usage() {
+  echo "netifrc systemd wrapper"
+  echo "Usage:"
+  echo "  systemd-wrapper.sh -i <interface> <command>"
+  echo "  where command is start|stop"
+}
+
+die() {
+  echo "$@"
+  exit -1
+}
+
+while getopts "i:" opt; do
+  case $opt in
+	i)
+		RC_IFACE=$OPTARG;;
+  esac
+done
+shift $((OPTIND -1))
+
+[ -z "$RC_IFACE" ] && die "Missing Parameter Interface"
+
+RC_SVCPREFIX="net"
+RC_SVCNAME="$RC_SVCPREFIX"."$RC_IFACE"
+RC_UNAME=$(uname)
+# XXX Find out the systemd way of doing this
+RC_GOINGDOWN=no
+
+# In Openrc systems this has value /run/openrc
+SVCDIR="/run/netifrc"
+# OpenRC saves values in $SVCDIR/options/$SVCNAME/$OPTION
+# In non OpenRC setting this is saved in /run/netifrc/options/$SVCNAME/$OPTION
+OPTIONSDIR="${SVCDIR}/options/${RC_SVCNAME}"
+STATEDIR="${SVCDIR}/${RC_SVCNAME}"
+
+# Source the config file
+if [ -f "$CONFDIR/$RC_SVCPREFIX" ]; then
+	. "$CONFDIR/$RC_SVCPREFIX"
+fi
+
+# Source the actual runscript
+if [ -f "$INITDIR/${RC_SVCPREFIX}.lo" ]; then
+	. "$INITDIR/${RC_SVCPREFIX}.lo"
+else
+	echo "$INITDIR/${RC_SVCPREFIX}.lo : Init file missing or invalid path"
+	exit -1
+fi
+
+netifrc_init() {
+	# Ensure OPTIONSDIR is present and writeable
+	mkdir -p "$OPTIONSDIR"
+	if [ ! -w "$OPTIONSDIR" ]; then
+		eerror "${OPTIONSDIR} does not exist or is not writeable"
+		exit -1;
+	fi
+	# Ensure STATEDIR is present and writeable
+	mkdir -p "$STATEDIR"
+	if [ ! -w "$STATEDIR" ]; then
+		eerror "${STATEDIR} does not exist or is not writeable"
+		exit -1;
+	fi
+}
+
+netifrc_cleanup() {
+	# Delete all the saved values
+	rm -f ${OPTIONSDIR}/*
+}
+
+rc=0
+case $1 in
+	start)
+		netifrc_init
+		start
+		rc=$?;;
+	stop)
+		stop
+		netifrc_cleanup
+		rc=$?;;
+	*)
+		die "Unrecognised command $1";;
+esac
+exit $rc
+
+# vi: ts=4 sw=4 noexpandtab