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#!/bin/bash
# Upstream doesn't provide a systemd .service file
# There is a timing bug that intermittently causes signal 15 failures on start
# Fedora's workaround is to use a separate script
# Copied from Fedora's opensm-3.3.17-4.fc22.x86_64.rpm
# Modified for Arch
#
# Launch the necessary OpenSM daemons for systemd
#
# Config files: /etc/opensm.conf (created by opensm), and additional /etc/opensm_extra.conf and /etc/opensm/opensm.conf.[0-9]*

shopt -s nullglob

prog=/usr/bin/opensm
[ -f /etc/opensm_extra.conf ] && . /etc/opensm_extra.conf

[ -n "$PRIORITY" ] && prio="-p $PRIORITY"

if [ -z "$GUIDS" ]; then
	CONFIGS=""
	CONFIG_CNT=0
	for conf in /etc/opensm/opensm.conf.[0-9]*; do
		CONFIGS="$CONFIGS $conf"
		let CONFIG_CNT++
	done
else
	GUID_CNT=0
	for guid in $GUIDS; do
		let GUID_CNT++
	done
fi
# Start opensm
if [ -n "$GUIDS" ]; then
	SUBNET_COUNT=0
	for guid in $GUIDS; do
		SUBNET_PREFIX=`printf "0xfe800000000000%02d" $SUBNET_COUNT`
		(while true; do $prog $prio -g $guid --subnet_prefix $SUBNET_PREFIX; sleep 30; done) &
		let SUBNET_COUNT++
	done
elif [ -n "$CONFIGS" ]; then
	for config in $CONFIGS; do
		(while true; do $prog $prio -F $config; sleep 30; done) &
	done
else
	(while true; do $prog $prio; sleep 30; done) &
fi
exit 0