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/usr/lib/ocf/resource.d/booth/sharedrsc is in booth-pacemaker 1.0-6ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh
#
#
#		sharedrsc OCF RA. Just keep some resource while running and
#		release when stopped. The resource is a directory on a
#		shared filesystem or on a filesystem which is remotely
#		accessible over ssh. Used for booth testing, i.e. to make
#		sure that no two sites keep the same ticket.
#
# Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Brée
#					 All Rights Reserved.
# Copyright (c) 2015 SUSE Microfocus, Dejan Muhamedagic
#					 All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like.	Any license provided herein, whether implied or
# otherwise, applies only to this software file.  Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#

#######################################################################
# Initialization:

: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs

#######################################################################

sharedrsc_meta_data() {
		cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="sharedrsc" version="1.0">
<version>1.0</version>

<longdesc lang="en">
This is sharedrsc Resource Agent.
It just keeps some resource while running and
releases it when stopped. The resource is a directory on a
shared filesystem or on a filesystem which is remotely
accessible over ssh. Used for booth testing, i.e. to make
sure that no two sites keep the same ticket.
</longdesc>
<shortdesc lang="en">shared resource (booth testing)</shortdesc>

<parameters>
<parameter name="dir" unique="1" required="1">
<longdesc lang="en">
Location of the shared directory. If it's of the form "[user@]host:path"
then it is assumed that the directory is to be accessed over ssh
on that host. Otherwise, it must be a directory on a shared
filesystem (such as nfs or ocfs2).
</longdesc>
<shortdesc lang="en">shared directory location</shortdesc>
<content type="string" default="" />
</parameter>

</parameters>

<actions>
<action name="start"		timeout="20" />
<action name="stop"			timeout="20" />
<action name="monitor"		timeout="20" interval="10" depth="0" />
<action name="reload"		timeout="20" />
<action name="migrate_to"	timeout="20" />
<action name="migrate_from" timeout="20" />
<action name="meta-data"	timeout="5" />
<action name="validate-all"   timeout="20" />
</actions>
</resource-agent>
END
}

#######################################################################

sharedrsc_usage() {
		cat <<END
usage: $0 {start|stop|monitor|migrate_to|migrate_from|validate-all|meta-data}

Expects to have a fully populated OCF RA-compliant environment set.
END
}

runcmd() {
	local func=$1
	local dir=$2
	$func $dir |
	if [ -n "$SSH_HOST" ]; then
		ssh -T -o Batchmode=yes $SSH_HOST
	else
		/bin/sh
	fi
}

getowner() {
	echo "test -d $1 && cat $1/owner"
}
testcmd() {
	echo "test -d $1 && test \"\`cat $1/owner\`\" = `uname -n`"
}
makecmd() {
	echo "mkdir $1 && echo `uname -n` > $1/owner"
}
removecmd() {
	echo "test -d $1 && test \"\`cat $1/owner\`\" = `uname -n` && rm $1/owner && rmdir $1"
}

testdir() {
	runcmd testcmd $1
}
makedir() {
	runcmd makecmd $1
}
removedir() {
	runcmd removecmd $1
}

sharedrsc_monitor() {
	if testdir $DIR; then
		return $OCF_SUCCESS
	else
		return $OCF_NOT_RUNNING
	fi
}

sharedrsc_start() {
	if sharedrsc_monitor; then
		return $OCF_SUCCESS
	fi
	makedir $DIR &&
		return $OCF_SUCCESS

	local owner
	if ! owner=`runcmd getowner $DIR`; then
		owner="... nobody, it's only half-claimed"
	fi
	ocf_log err "eek, $OCF_RESKEY_dir already owned by $owner"
	return $OCF_ERR_GENERIC
}

sharedrsc_stop() {
	sharedrsc_monitor
	if [ $? -eq $OCF_NOT_RUNNING ]; then
		return $OCF_SUCCESS
	fi
	removedir $DIR
}

sharedrsc_getconfig() {
	local colon_pos
	colon_pos=`expr index "$OCF_RESKEY_dir" ":"`
	if [ $colon_pos -gt 0 ]; then
		SSH_HOST=`echo $OCF_RESKEY_dir | cut -d: -f 1`
		DIR=`echo $OCF_RESKEY_dir | cut -d: -f 2`
	else
		SSH_HOST=
		DIR=$OCF_RESKEY_dir
	fi
}

sharedrsc_validate_all() {
	if [ `expr index $DIR /` -ne 1 ]; then
		ocf_log err "dir must be an absolute path"
		return $OCF_ERR_INSTALLED
	fi
	return $OCF_SUCCESS
}

OCF_REQUIRED_PARAMS="dir"
ocf_rarun $*

#
# vim:tabstop=4:shiftwidth=4:textwidth=0:wrapmargin=0