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#!/bin/sh
#
# Copyright (c) 1995-2002 Silicon Graphics, Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program 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 General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Lock the PMNS against concurrent transactional updates
#
. $PCP_DIR/etc/pcp.env
lock=${1-$PCP_VAR_DIR/pmns/root}.lock
i=0
while true
do
if pmlock $lock
then
# lock acquired
#
#DEBUG# echo "pmnslock: `date; ls -li $lock`"
break
fi
if [ $i -eq 20 ]
then
echo "lockpmns: Warning: Unable to acquire lock ($lock)"
echo " after 120 seconds ... continuing anyway"
exit 1
fi
sleep 5
i=`expr $i + 1`
done
exit 0
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