47 lines
827 B
Bash
Executable File
47 lines
827 B
Bash
Executable File
#!/bin/sh
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# lockfile.sh - handle lock files
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# Copyright (C) 2006-2008 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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Check_lockfile ()
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{
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FILE="${1}"
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if [ -z "${FILE}" ]
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then
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FILE="/var/lock/${PROGRAM}.lock"
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fi
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# Checking lock file
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if [ -f "${FILE}" ]
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then
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Echo_error "${PROGRAM} locked"
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exit 1
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fi
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}
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Create_lockfile ()
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{
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FILE="${1}"
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if [ -z "${FILE}" ]
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then
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FILE="/var/lock/${PROGRAM}.lock"
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fi
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DIRECTORY="$(dirname ${FILE})"
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# Creating lock directory
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mkdir -p "${DIRECTORY}"
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# Creating lock trap
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trap 'ret=${?}; '"rm -f \"${FILE}\";"' exit ${ret}' EXIT HUP INT QUIT TERM
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# Creating lock file
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touch "${FILE}"
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}
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