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

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

_ACTION="${1}"
shift

# Requiring stage file
Require_stagefiles config bootstrap

case "${_ACTION}" in
	install)
		Echo_message "Begin mounting /proc..."

		# Checking stage file
		Check_stagefile

		# Acquire lock file
		Acquire_lockfile

		# Creating mountpoint
		mkdir -p chroot/proc

		# Mounting /proc
		mount -t proc -o x-gvfs-hide proc-live chroot/proc

		# Creating stage file
		Create_stagefile
		;;

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

		# Checking stage file
		Ensure_stagefile_exists

		# Acquire lock file
		Acquire_lockfile

		# Workaround binfmt-support /proc locking
		if [ -e chroot/proc/sys/fs/binfmt_misc/status ]
		then
			umount chroot/proc/sys/fs/binfmt_misc
		fi

		# Unmounting /proc
		if [ -e chroot/proc/version ]
		then
			umount chroot/proc
		fi

		# Removing stage file
		Remove_stagefile
		;;

	*)
		Echo_error "Invalid action parameter: '${_ACTION}'"
		Usage --fail
		;;
esac