/usr/share/live/build/functions/lockfile.sh is in live-build 3.0.5-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | #!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2006-2013 Daniel Baumann <daniel@debian.org>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
Check_lockfile ()
{
FILE="${1}"
if [ -z "${FILE}" ]
then
FILE="/var/lock/${PROGRAM}.lock"
fi
# Checking lock file
if [ -f "${FILE}" ]
then
Echo_error "${PROGRAM} locked"
exit 1
fi
}
Create_lockfile ()
{
FILE="${1}"
if [ -z "${FILE}" ]
then
FILE="/var/lock/${PROGRAM}.lock"
fi
DIRECTORY="$(dirname ${FILE})"
# Creating lock directory
mkdir -p "${DIRECTORY}"
# Creating lock trap
trap 'ret=${?}; '"rm -f \"${FILE}\";"' exit ${ret}' EXIT HUP INT QUIT TERM
# Creating lock file
touch "${FILE}"
}
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