apfstests/tests/xfs/261

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2011 SGI.  All Rights Reserved.
#
# FS QA Test No. 261
#
# This test exercises an issue in libxcmd where a problem with any
# mount point or project quota directory causes the program to exit
# complete.  The effect of this is that one cannot operate on any
# directory, even if the problem directory is completely unrelated
# to the directory one wants to operate on.
#
seq=$(basename $0)
seqres=$RESULT_DIR/$seq
echo "QA output created by ${seq}"

here=$(pwd)

tmp=/tmp/$$
my_mtab=${tmp}.mtab

mtab=/proc/self/mounts

status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f ${tmp}.*
}

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

echo "Silence is golden."
rm -f $seqres.full

# real QA test starts here

# Modify as appropriate.
_supported_fs xfs

_require_quota
_require_scratch

_scratch_mkfs >> $seqres.full 2>&1

# Just use the current mount table as an example mtab file.  Odds
# are good there's nothing wrong with it.
_setup_my_mtab() {
	cp "${mtab}" "${my_mtab}"
}

# Any bogus entry in the mtab file is enough to trigger the problem.
# So just append a bogus entry at the end of the private mtab file.
# This matches an actually-observed entry in a mount table (with a
# few characters in the paths changed to protect the innocent).
_perturb_my_mtab() {
	cat <<-! >> "${my_mtab}"
		/dev/disk/by-id/scsi-3600508e000000000c329ba1d8b0c391b-part3 /tmp/autoY8qcJ9\040(deleted) xfs rw 0 0
	!
}

_check() {
	if [ $# -eq 0 ]; then
		export MOUNT_OPTIONS=""
	elif [ $# -eq 1 ]; then
		[ $1 = u -o $1 = g -o $1 = p ] || exit
		export MOUNT_OPTIONS="-o${1}quota"
	else
		exit
	fi

	_qmount

	# Set up a private mount table file, then try out a simple quota
	# command to show mounts
	_setup_my_mtab
	echo print | xfs_quota	-t "${my_mtab}" > /dev/null || exit

	# Do the same simple quota command after adding a bogus entry to the
	# mount table.  Old code will bail on this because it has trouble
	# with the bogus entry.
	_perturb_my_mtab
	echo print | xfs_quota -t "${my_mtab}" > /dev/null || exit
}

#########

# Mount SCRATCH with no quota options
_check

# user quota enabled
_check u

# group quota enabled
_check g

# user quota enabled
_check p

status=0	# success, all done