884bfd04d6
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@104 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
98 lines
1.7 KiB
Plaintext
98 lines
1.7 KiB
Plaintext
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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export LOCKDIR=/var/lock/xcat
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function needhelp
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{
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if [ "$#" = "1" ]
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then
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for i in $*
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do
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test "$i" = "--help" && echo "\nhttp://xcat.org for support." && return 0
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test "$i" = "-h" && echo "http://xcat.org for support.\n" && return 0
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test "$i" = "--version" && echo "$VERSION" && exit 0
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test "$i" = "-v" && echo "$VERSION" && exit 0
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done
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fi
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return 1
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}
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function getlock
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{
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LOCK=$1
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TIMEOUT=$2
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let t=0
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mkdir -p $LOCKDIR
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if [ -r $LOCKDIR/$LOCK.pid ]
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then
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PID=$(cat $LOCKDIR/$LOCK.pid)
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while ps -p $PID >/dev/null 2>&1
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do
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sleep 1
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let t=t+1
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if (($t -gt $TIMEOUT))
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then
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return 1
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fi
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done
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fi
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echo "$$" > $LOCKDIR/$LOCK.pid
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return 0
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}
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function lockstatus
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{
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LOCK=$1
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if [ -r $LOCKDIR/$LOCK.pid ]
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then
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PID=$(cat $LOCKDIR/$LOCK.pid)
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if ps -p $PID >/dev/null 2>&1
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then
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echo "locked by PID $PID"
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ps -fp $PID | tail -1
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else
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echo "stale lock PID $PID, remove $LOCKDIR/$LOCK.pid"
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fi
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return 0
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fi
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echo "nolock"
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return 0
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}
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function freelock
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{
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LOCK=$1
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FORCE=$2
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mkdir -p $LOCKDIR
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if [ "$FORCE" = "1" ]
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then
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rm -f $LOCKDIR/$LOCK.pid >/dev/null 2>&1
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return 0
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fi
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if [ -r $LOCKDIR/$LOCK.pid ]
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then
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PID=$(cat $LOCKDIR/$LOCK.pid)
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if [ "$PID" = "$$" ]
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then
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rm -f $LOCKDIR/$LOCK.pid
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else
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return 1
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fi
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fi
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return 0
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}
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