#!/bin/sh
# Sub-tests that require a mounted partition.
set -e
partition=$1

. /usr/share/os-prober/common.sh

tmpmnt=/var/lib/os-prober/mount
if [ ! -d $tmpmnt ]; then
	mkdir $tmpmnt
fi

types="$(fs_type "$partition")" || types=NOT-DETECTED
if [ "$types" = NOT-DETECTED ]; then
	debug "$1 type not recognised; skipping"
	exit 0
elif [ "$types" = swap ]; then
	debug "$1 is a swap partition; skipping"
	exit 0
elif [ "$types" = crypto_LUKS ]; then
	debug "$1 is a LUKS partition; skipping"
	exit 0
elif [ "$types" = ntfs ]; then
	if type ntfs-3g >/dev/null 2>&1; then
		types='ntfs-3g ntfs'
	fi
elif [ -z "$types" ]; then
	if type cryptsetup >/dev/null 2>&1 && \
	   cryptsetup luksDump "$partition" >/dev/null 2>&1; then
		debug "$1 is a LUKS partition; skipping"
		exit 0
	fi
	for type in $(grep -v nodev /proc/filesystems); do
		# hfsplus filesystems are mountable as hfs. Try hfs last so
		# that we can tell the difference.
		if [ "$type" = hfs ]; then
			delaytypes="${delaytypes:+$delaytypes }$type"
		elif [ "$type" = fuseblk ]; then
			if type ntfs-3g >/dev/null 2>&1; then
				types="${types:+$types }ntfs-3g"
			fi
		else
			types="${types:+$types }$type"
		fi
	done
fi

for type in $types $delaytypes; do
	if mount -o ro -t "$type" "$partition" "$tmpmnt" 2>/dev/null; then
		debug "mounted as $type filesystem"
		for test in /usr/lib/os-probes/mounted/*; do
			debug "running subtest $test"
			if [ -f $test ] && [ -x $test ]; then
				if $test "$partition" "$tmpmnt" "$type"; then
					debug "os found by subtest $test"
					if ! umount $tmpmnt; then
						warn "failed to umount $tmpmnt"
					fi
					rmdir $tmpmnt || true
					exit 0
				fi
			fi
		done
		if ! umount $tmpmnt; then
			warn "failed to umount $tmpmnt"
		fi
		break
	fi
done

rmdir $tmpmnt || true

# No tests found anything.
exit 1
