#!/bin/bash

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

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

[ -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
$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
ts_finalize_subtest

ts_init_subtest "make-private"
$TS_CMD_MOUNT --make-private $MOUNTPOINT >> $TS_OUTPUT 2>&1
$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
ts_finalize_subtest


ts_init_subtest "make-unbindable"
$TS_CMD_MOUNT --make-unbindable $MOUNTPOINT >> $TS_OUTPUT 2>&1
$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
ts_finalize_subtest

# clean up
$TS_CMD_UMOUNT $MOUNTPOINT


ts_init_subtest "bind-shared"
$TS_CMD_MOUNT --make-shared \
	      --bind $MOUNTPOINT $MOUNTPOINT >> $TS_OUTPUT 2>&1
$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
$TS_CMD_UMOUNT $MOUNTPOINT
ts_finalize_subtest


#
# block dev based mounts
#
DEVICE=$(ts_device_init)
[ "$?" == 0 ] || ts_die "Cannot init device"

mkfs.ext3 $DEVICE &> /dev/null || ts_die "Cannot make ext3 on $DEVICE" $DEVICE
ts_device_has "TYPE" "ext3" $DEVICE || ts_die "Cannot find ext3 on $DEVICE" $DEVICE


# multiple propagation flags for one mount(8) call is unsupported
# by old mount-deprecated/mount
$TS_CMD_MOUNT -V | grep -q libmount
if [ $? -eq 0 ]; then

	ts_init_subtest "mount-private"
	$TS_CMD_MOUNT --make-private --make-unbindable \
		      $DEVICE $MOUNTPOINT >> $TS_OUTPUT 2>&1
	$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
	$TS_CMD_UMOUNT $MOUNTPOINT
	ts_finalize_subtest

	ts_init_subtest "mount-private-ro"
	$TS_CMD_MOUNT $DEVICE $MOUNTPOINT -o ro,private >> $TS_OUTPUT 2>&1
	$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o PROPAGATION >> $TS_OUTPUT
	$TS_CMD_FINDMNT -nr --target $MOUNTPOINT -o VFS-OPTIONS >> $TS_OUTPUT
	$TS_CMD_UMOUNT $MOUNTPOINT
	ts_finalize_subtest
fi

ts_device_deinit $DEVICE
rmdir $MOUNTPOINT

ts_log "Success"
ts_finalize