#!/bin/bash

TS_TOPDIR="$(dirname $0)/../.."
TS_DESC="shared-subtree"

. $TS_TOPDIR/functions.sh
ts_init "$*"
ts_skip_nonroot

function get_attr() 
{
	# It's usually stupid idea to use 'grep | awk',
	# but use paths in awk /regex/ is too tricky...
	#
	# TODO; improve libmount and findmnt to return the
	#       shared-subtree flags
	#
	echo $(grep "$1" /proc/self/mountinfo | \
		awk '{print $7}' | \
		awk -F ':' '{ print $1 }')
}

[ -d $TS_MOUNTPOINT ] || mkdir -p $TS_MOUNTPOINT

# bind
$TS_CMD_MOUNT --bind $TS_MOUNTPOINT $TS_MOUNTPOINT

# check the bind
$TS_CMD_FINDMNT --kernel --target $TS_MOUNTPOINT  &> /dev/null
[ "$?" == "0" ] || ts_die "Cannot find binded $TS_MOUNTPOINT in /proc/self/mountinfo"

# use the same mounpoint for all sub-tests
MOUNTPOINT="$TS_MOUNTPOINT"


ts_init_subtest "make-shared"
$TS_CMD_MOUNT --make-shared $MOUNTPOINT >> $TS_OUTPUT 2>&1
echo  "$(get_attr $MOUNTPOINT)" >> $TS_OUTPUT
ts_finalize_subtest

ts_init_subtest "make-private"
$TS_CMD_MOUNT --make-private $MOUNTPOINT >> $TS_OUTPUT 2>&1
echo  "$(get_attr $MOUNTPOINT)" >> $TS_OUTPUT
ts_finalize_subtest

ts_init_subtest "make-unbindable"
$TS_CMD_MOUNT --make-unbindable $MOUNTPOINT >> $TS_OUTPUT 2>&1
echo  "$(get_attr $MOUNTPOINT)" >> $TS_OUTPUT
ts_finalize_subtest


# clean up
$TS_CMD_UMOUNT $TS_MOUNTPOINT
rmdir $TS_MOUNTPOINT

ts_log "Success"
ts_finalize