/usr/lib/live/build/source_hooks is in live-build 4.0.3-1.
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 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | #!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2006-2014 Daniel Baumann <mail@daniel-baumann.ch>
##
## 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.
set -e
# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh
# Setting static variables
DESCRIPTION="$(Echo 'execute hooks in source')"
HELP=""
USAGE="${PROGRAM} [--force]"
Arguments "${@}"
# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/source config/source
Set_defaults
Echo_message "Begin executing hooks..."
# Requiring stage file
Require_stagefile .build/config .build/bootstrap
# Checking stage file
Check_stagefile .build/source_hooks
# Checking lock file
Check_lockfile .lock
# Creating lock file
Create_lockfile .lock
## Processing distribution hooks
# Running hooks
for _HOOK in ${LB_BINARY_HOOKS}
do
	for LOCATION in "${LIVE_BUILD}/hooks" /usr/share/live/build/hooks
	do
		for FILE in "${LOCATION}"/????-"${_HOOK}".source
		do
			if [ -e "${FILE}" ]
			then
				cd source
				"${FILE}" || { Echo_error "${_HOOK} failed (exit non-zero). You should check for errors."; exit 1 ;}
				cd "${OLDPWD}"
			fi
		done
	done
done
## Processing local hooks
if Find_files config/hooks/*.source
then
	for HOOK in config/hooks/*.source
	do
		# Making hook executable
		if [ ! -x "${HOOK}" ]
		then
			chmod +x "${HOOK}"
		fi
		# Executing hook
		./"${HOOK}" || { Echo_error "${HOOK} failed (exit non-zero). You should check for errors."; exit 1 ;}
	done
	# Creating stage file
	Create_stagefile .build/source_hooks
fi
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