#!/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="Mount /sys"
USAGE="${PROGRAM} {install|remove} [--force]"

# Processing arguments and configuration files
Init_config_data "${@}"

# Requiring stage file
Require_stagefile .build/config .build/bootstrap

case "${1}" in
	install)
		Echo_message "Begin mounting /sys..."

		# Checking stage file
		Check_stagefile .build/chroot_sysfs

		# Checking lock file
		Check_lockfile .lock

		# Creating lock file
		Create_lockfile .lock

		# Create mountpoint
		mkdir -p chroot/sys

		# Mounting /sys
		mount sysfs-live -t sysfs chroot/sys

		# Creating stage file
		Create_stagefile .build/chroot_sysfs
		;;

	remove)
		Echo_message "Begin unmounting /sys..."

		# Checking lock file
		Check_lockfile .lock

		# Creating lock file
		Create_lockfile .lock

		# Unmounting /sys
		if [ -e chroot/sys/class ]
		then
			umount chroot/sys
		fi

		# Removing stage file
		rm -f .build/chroot_sysfs
		;;

	*)
		Usage
		;;
esac