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#!/bin/sh
## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 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="Execute hooks in chroot"
USAGE="${PROGRAM} [--force]"
# Processing arguments and configuration files
Init_config_data "${@}"
Echo_message "Begin executing hooks..."
# Requiring stage file
Require_stagefiles config bootstrap
# Checking stage file
Check_stagefile
# Acquire lock file
Acquire_lockfile
## Processing distribution hooks
# Make build config available to chroot hooks. First, make the bind
# mount and then make it read-only. This can't happen in one mount
# command, then the resulting mount will be rw (see mount(8)). Making it
# ro prevents modifications and prevents accidentally removing the
# contents of the config directory when removing the chroot.
mkdir -p chroot/live-build/config
mount -o bind config chroot/live-build/config
mount -o remount,ro,bind config chroot/live-build/config
# Copying hooks
mkdir -p chroot/root/lb_chroot_hooks
for _HOOK in ${LB_CHROOT_HOOKS}
do
for LOCATION in "${LIVE_BUILD}/hooks" /usr/share/live/build/hooks
do
for FILE in "${LOCATION}"/????-"${_HOOK}".chroot
do
if [ -e "${FILE}" ]
then
cp "${FILE}" chroot/root/lb_chroot_hooks
fi
done
done
done
# Running hooks
if ls chroot/root/lb_chroot_hooks/* > /dev/null 2>&1
then
for _HOOK in chroot/root/lb_chroot_hooks/*
do
Chroot chroot "/root/lb_chroot_hooks/$(basename ${_HOOK})" || { Echo_error "${_HOOK} failed (exit non-zero). You should check for errors."; exit 1 ;}
rm -f chroot/root/lb_chroot_hooks/"$(basename ${_HOOK})"
done
fi
rmdir chroot/root/lb_chroot_hooks
rmdir --ignore-fail-on-non-empty chroot/root
## Processing local hooks
if ls config/hooks/normal/*.chroot > /dev/null 2>&1 && (
ls config/hooks/live/*.chroot > /dev/null 2>&1 ||
ls config/hooks/live/*.container > /dev/null 2>&1 )
then
# If a systemd-nspawn hook exists check if package is installed
if ls config/hooks/live/*.container > /dev/null 2>&1
then
Check_package host /usr/bin/systemd-nspawn systemd-container
fi
# Restoring cache
Restore_package_cache chroot
for HOOK in config/hooks/normal/*.chroot config/hooks/live/*.chroot config/hooks/live/*.container
do
if [ ! -e "${HOOK}" ]
then
continue
fi
# Copying hook
cp "${HOOK}" chroot/root
# Making hook executable
if [ ! -x chroot/root/"$(basename ${HOOK})" ]
then
chmod +x chroot/root/"$(basename ${HOOK})"
fi
# Executing hook
Echo_message "Executing hook ${HOOK}..."
case "${HOOK}" in
*.container)
umount chroot/proc
systemd-nspawn --capability=all -D chroot "/root/$(basename ${HOOK})" || { Echo_error "${HOOK} failed (exit non-zero). You should check for errors."; exit 1 ;}
mount proc-live -t proc chroot/proc
;;
*)
Chroot chroot "/root/$(basename ${HOOK})" || { Echo_error "${HOOK} failed (exit non-zero). You should check for errors."; exit 1 ;}
;;
esac
# Removing hook
rm -f chroot/root/"$(basename ${HOOK})"
done
# Saving cache
Save_package_cache chroot
fi
# Remove bind mount of build config inside chroot.
umount chroot/live-build/config
rmdir chroot/live-build/config
rmdir chroot/live-build
# Creating stage file
Create_stagefile
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