#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2021 Oracle.  All Rights Reserved.
#
# FS QA Test No. 145
#
# Regression test for failing to undo delalloc quota reservations when changing
# project id but we fail some other part of FSSETXATTR validation.  If we fail
# the test, we trip debugging assertions in dmesg.  This is a regression test
# for commit 1aecf3734a95 ("xfs: fix chown leaking delalloc quota blocks when
# fssetxattr fails").

. ./common/preamble
_begin_fstest auto quick quota

# Import common functions.
. ./common/quota

# real QA test starts here
_supported_fs xfs
_require_command "$FILEFRAG_PROG" filefrag
_require_test_program "chprojid_fail"
_require_quota
_require_scratch

echo "Format filesystem" | tee -a $seqres.full
_scratch_mkfs > $seqres.full
_qmount_option 'prjquota'
_qmount
_require_prjquota $SCRATCH_DEV

# Make sure that a regular buffered write produces delalloc reservations.
$XFS_IO_PROG -f -c 'pwrite 0 64k' $SCRATCH_MNT/testy &> /dev/null
$FILEFRAG_PROG -v $SCRATCH_MNT/testy 2>&1 | grep -q delalloc || \
	_notrun "test requires delayed allocation writes"
rm -f $SCRATCH_MNT/testy

echo "Run test program"
$XFS_QUOTA_PROG -x -c 'report -ap' $SCRATCH_MNT >> $seqres.full
$here/src/chprojid_fail $SCRATCH_MNT/blah

# The regression we're testing for is an accounting bug involving delalloc
# reservations.  FSSETXATTR does not itself cause dirty data writeback, so we
# assume that if the file still has delalloc extents, then it must have had
# them when chprojid_fail was running, and therefore the test was set up
# correctly.  There's a slight chance that background writeback can sneak in
# and flush the file, but this should be a small enough gap.
$FILEFRAG_PROG -v $SCRATCH_MNT/blah 2>&1 | grep -q delalloc || \
	echo "file didn't get delalloc extents, test invalid?"

# Make a note of current quota status for diagnostic purposes
$XFS_QUOTA_PROG -x -c 'report -ap' $SCRATCH_MNT >> $seqres.full

# success, all done
status=0
exit