#!/sbin/openrc-run
# Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.

description="Mounts disks and swap according to /etc/fstab."

depend()
{
	need fsck
	use lvm modules mtab
	after lvm modules
	keyword -jail -prefix -systemd-nspawn -vserver -lxc
}

start()
{
	# Mount local filesystems in /etc/fstab.
	local types="noproc" x= no_netdev=
	for x in $net_fs_list $extra_net_fs_list; do
		types="${types},no${x}"
	done

	if [ "$RC_UNAME" = Linux ]; then
		no_netdev="-O no_netdev"
		if mountinfo -q /usr; then
			touch "$RC_SVCDIR"/usr_premounted
		fi
	fi
	ebegin "Mounting local filesystems"
	mount -at "$types" $no_netdev
	eend $? "Some local filesystem failed to mount"

	# Always return 0 - some local mounts may not be critical for boot
	return 0
}

stop()
{
	yesno $RC_GOINGDOWN || return 0
	# We never unmount / or /dev or $RC_SVCDIR

	# Bug 381783
	local rc_svcdir=$(printf '%s\n' "$RC_SVCDIR" | sed 's:/lib\(32\|64\)\?/:/lib(32|64)?/:g')

	local x= no_umounts_r="/|/dev|/dev/.*|${rc_svcdir}"
	no_umounts_r="${no_umounts_r}|/bin|/sbin|/lib(32|64)?|/libexec"
	# RC_NO_UMOUNTS is an env var that can be set by plugins
	local IFS="$IFS:"
	for x in $no_umounts $RC_NO_UMOUNTS; do
		no_umounts_r="$no_umounts_r|$x"
	done

	if [ "$RC_UNAME" = Linux ]; then
		no_umounts_r="$no_umounts_r|/proc|/proc/.*|/run|/sys|/sys/.*"
		if [ -e "$rc_svcdir"/usr_premounted ]; then
			no_umounts_r="$no_umounts_r|/usr"
		fi
	fi
	no_umounts_r="^($no_umounts_r)$"

	# Flush all pending disk writes now
	sync

	. "$RC_LIBEXECDIR"/sh/rc-mount.sh

	if [ "$RC_UNAME" = Linux ] && [ -d /sys/fs/aufs ] ; then
		#if / is aufs we remount it noxino during shutdown
		if mountinfo -q -f '^aufs$' / ; then
			mount -o remount,noxino,rw /
			sync
		fi

		local aufs_branch aufs_mount_dir aufs_mount_point aufs_si_dir aufs_si_id
		for aufs_si_dir in /sys/fs/aufs/*; do
			aufs_mount_dir=${aufs_si_dir#/sys/fs/aufs/}
			aufs_si_id="$(printf "%s" $aufs_mount_dir | sed 's/_/=/g')"
			aufs_mount_point="$(mountinfo -o ${aufs_si_id})"
			for x in $aufs_si_dir/br[0-9][0-9][0-9]; do
				aufs_branch=$(sed 's/=.*//g' $x)
				eindent
				if ! mount -o "remount,del:$aufs_branch" "$aufs_mount_point" > /dev/null 2>&1; then
					ewarn "Failed to remove branch $aufs_branch from aufs \
						$aufs_mount_point"
				fi
				eoutdent
				sync
			done
		done
	fi

	# Umount loop devices
	einfo "Unmounting loop devices"
	eindent
	do_unmount "umount -d" --skip-point-regex "$no_umounts_r" \
		--node-regex "^/dev/loop"
	eoutdent

	# Now everything else, except network filesystems as the
	# network should be down by this point.
	einfo "Unmounting filesystems"
	eindent
	local fs=
	for x in $net_fs_list $extra_net_fs_list; do
		fs="$fs${fs:+|}$x"
	done
	[ -n "$fs" ] && fs="^($fs)$"
	do_unmount umount --skip-point-regex "$no_umounts_r" \
		"${fs:+--skip-fstype-regex}" $fs --nonetdev
	eoutdent

	return 0
}
