#!/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