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  • Committer: Daniel Baumann
  • Date: 2011-03-09 17:14:51 UTC
  • Revision ID: git-v1:fe6eb1c593e2df135c8807bf94df614984b4d6ec
Adding live-helper 1.0~a1-1.

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functions/lockfile.sh
 
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#!/bin/sh
 
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# lockfile.sh - handle lock files
 
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set -e
 
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Check_lockfile ()
 
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{
 
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        LOCKFILE="${1}"
 
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        # Checking lock file
 
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        if [ -f "${LOCKFILE}" ]
 
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        then
 
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                echo "E: system locked"
 
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                exit 1
 
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        fi
 
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}
 
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Create_lockfile ()
 
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{
 
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        LOCKFILE="${1}"
 
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        LOCKDIRECTORY="`dirname ${1}`"
 
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        # Creating lock directory
 
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        if [ ! -d "${LOCKDIRECTORY}" ]
 
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        then
 
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                mkdir -p "${LOCKDIRECTORY}"
 
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        fi
 
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        # Creating lock file
 
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        trap "test -f ${LOCKFILE} && \
 
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        rm -f ${LOCKFILE}; exit 0" 0 2 15
 
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        touch "${LOCKFILE}"
 
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}