#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
#
# FS QA Test No. 015
#
# check out-of-space behaviour
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# success is the default!

# get standard environment, filters and checks
. ./common/rc
. ./common/filter

_cleanup()
{
	_scratch_unmount
}

trap "_cleanup; exit \$status" 0 1 2 3 15

_free()
{
    _df_dir $SCRATCH_MNT | $AWK_PROG '{ print $5 }'
}

# real QA test starts here
_supported_fs generic

_require_scratch
_require_no_large_scratch_dev

# btrfs needs at least 256MB (with upward round off) to create a non-mixed mode
# fs. Ref: btrfs-progs: btrfs_min_dev_size()
_scratch_mkfs_sized $((256 * 1024 * 1024)) >> $seqres.full 2>&1 \
    || _fail "mkfs failed"
_scratch_mount
out=$SCRATCH_MNT/fillup.$$
rm -f $seqres.full

free0=`_free`
if [ -z "$free0" ]
then
    echo "   *** failed to get free space (0)"
    exit 1
fi
echo "free space at start $free0" >> $seqres.full

echo "fill disk:"	# well, filesystem really - not disk

POSIXLY_CORRECT=yes dd if=/dev/zero of=$out bs=1024k 2>&1 | _filter_dd

echo "check free space:"

free1=`_free`
if [ -z "$free1" ]
then
    echo "   *** failed to get free space (1)"
    exit 1
fi
echo "free space after fill $free1" >> $seqres.full

if [ ! -e $out ]
then
    echo "   *** file not created"
    exit 1
fi

if [ ! -s $out ]
then
    echo "   *** file created with zero length"
    ls -l $out
    exit 1
fi

echo "delete fill:"

if ! rm $out
then
    echo "   *** file not deleted"
    exit 1
fi

if [ -e $out ]
then
    echo "   *** file still exists"
    ls -l $out
    exit 1
fi

echo "check free space:"

sync

free2=`_free`
if [ -z "$free2" ]
then
    echo "   *** failed to get free space (2)"
    exit 1
fi
echo "free space after delete $free2" >> $seqres.full

echo -n "   !!! "
_within_tolerance "free space" $free2 $free0 1% -v

status=0
exit