41 lines
744 B
Bash
Executable File
41 lines
744 B
Bash
Executable File
#!/bin/sh
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# lockfile.sh - handle lock files
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# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
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#
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# live-helper comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
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# This is free software, and you are welcome to redistribute it
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# under certain conditions; see COPYING for details.
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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 trap
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trap "test -f ${LOCKFILE} && rm -f ${LOCKFILE}; exit 0" 0 2 15
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# Creating lock file
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touch "${LOCKFILE}"
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}
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