common/quota - external/git.kernel.org/fs/xfs/xfstests-dev - Git at Google

 ##/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.  All Rights Reserved.
 #
 # Functions useful for quota tests

 # checks that the generic quota support in the kernel is enabled
 # and that we have valid quota user tools installed.
 #
 _require_quota()
 {
     [ -n "$QUOTA_PROG" ] || _notrun "Quota user tools not installed"

     case $FSTYP in
     ext2|ext3|ext4|ext4dev|f2fs|reiserfs)
 	if [ ! -d /proc/sys/fs/quota ]; then
 	    _notrun "Installed kernel does not support quotas"
 	fi
 	;;
     gfs2|ocfs2|bcachefs)
 	;;
     xfs)
 	if [ ! -f /proc/fs/xfs/xqmstat ]; then
 	    _notrun "Installed kernel does not support XFS quotas"
         fi
 	if [ "$USE_EXTERNAL" = yes -a ! -z "$TEST_RTDEV" ]; then
 	    _notrun "Quotas not supported on realtime test device"
 	fi
 	if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ]; then
 	    _notrun "Quotas not supported on realtime scratch device"
 	fi
 	;;
     *)
 	_notrun "disk quotas not supported by this filesystem type: $FSTYP"
 	;;
     esac
 }

 #
 # checks that the XFS quota support in the kernel is enabled
 # and that we have valid quota user tools installed.
 #
 _require_xfs_quota()
 {
     $here/src/feature -q $TEST_DEV
     [ $? -ne 0 ] && _notrun "Installed kernel does not support XFS quota"
     if [ "$USE_EXTERNAL" = yes -a ! -z "$TEST_RTDEV" ]; then
 	_notrun "Quotas not supported on realtime test device"
     fi
     if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ]; then
 	_notrun "Quotas not supported on realtime scratch device"
     fi
     [ -n "$XFS_QUOTA_PROG" ] || _notrun "XFS quota user tools not installed"
 }

 # Check that a mounted fs has a particular type of quota accounting turned on.
 #
 # The first argument must be the data device of a mounted fs.  It must not be
 # the actual mountpath.
 #
 # The second argument is the quota type ('usrquota', 'grpquota', 'prjquota',
 # 'any', or 'all').
 _xfs_quota_acct_enabled()
 {
 	local dev="$1"
 	local qtype="$2"
 	local f_args=()
 	local any=

 	case "$qtype" in
 	"usrquota"|"uquota")	f_args=("-U");;
 	"grpquota"|"gquota")	f_args=("-G");;
 	"prjquota"|"pquota")	f_args=("-P");;
 	"all")			f_args=("-U" "-G" "-P");;
 	"any")			f_args=("-U" "-G" "-P"); any=1;;
 	*)			echo "$qtype: Unknown quota type."; return 1;;
 	esac

 	if [ "$any" = "1" ]; then
 		for arg in "$f_args"; do
 			$here/src/feature "$arg" "$dev" && return 0
 		done
 		return 1
 	fi

 	$here/src/feature "${f_args[@]}" "$dev"
 }

 # Require that a mounted fs has a particular type of quota turned on.  This
 # takes the same arguments as _xfs_quota_acct_enabled.  If the third argument is
 # '-u' (or is empty and dev is $SCRATCH_DEV) the fs will be unmounted on
 # failure.
 _require_xfs_quota_acct_enabled()
 {
 	local dev="$1"
 	local qtype="$2"
 	local umount="$3"
 	local fsname="$dev"

 	_xfs_quota_acct_enabled "$dev" "$qtype" "$qmode" && return 0

 	if [ -z "$umount" ] && [ "$dev" = "$SCRATCH_DEV" ]; then
 		umount="-u"
 	fi
 	test "$umount" = "-u" && umount "$dev" &>/dev/null

 	case "$dev" in
 	"$TEST_DEV")	fsname="test";;
 	"$SCRATCH_DEV")	fsname="scratch";;
 	esac

 	case "$qtype" in
 	"any")		qtype="any quotas";;
 	"all")		qtype="all quotas";;
 	esac

 	_notrun "$qtype: accounting not enabled on $fsname filesystem."
 }

 #
 # checks that xfs_quota can operate on foreign (non-xfs) filesystems
 # Skips check on xfs filesystems, old xfs_quota is fine there.
 # Appends "-f" to enable foreign behavior on non-xfs filesystems if available.
 #
 _require_xfs_quota_foreign()
 {
 	if [ "$FSTYP" != "xfs" ]; then
 		$XFS_QUOTA_PROG -f -V &>/dev/null || \
 		 _notrun "xfs_quota binary does not support foreign filesystems"
 		XFS_QUOTA_PROG="$XFS_QUOTA_PROG -f"
 	fi
 }

 #
 # Checks that the project quota support in the kernel is enabled.
 # The device must be mounted for detection to work properly.
 #
 _require_prjquota()
 {
     [ -n "$1" ] && _dev="$1" || _dev="$TEST_DEV"
     if [[ "$FSTYP" == ext[234] ]]; then
 	dumpe2fs -h $_dev 2>&1 | grep -qw project || \
 		_notrun "Project quota not available on this $FSTYP"
     fi
     if [ "$FSTYP" == "f2fs" ]; then
 	dump.f2fs $_dev 2>&1 | grep -qw project_quota
 	[ $? -ne 0 ] && _notrun "Project quota not enabled in this device $_dev"
 	dump.f2fs $_dev 2>&1 | grep -qw quota_ino
 	[ $? -ne 0 ] && _notrun "quota sysfile not enabled in this device $_dev"
 	cat /sys/fs/f2fs/features/project_quota | grep -qw supported
 	[ $? -ne 0 ] && _notrun "Installed kernel does not support project quotas"
 	return
     fi
     $here/src/feature -P $_dev
     [ $? -ne 0 ] && _notrun "Installed kernel does not support project quotas"
     if [ "$USE_EXTERNAL" = yes ]; then
 	if [ -n "$TEST_RTDEV" -o -n "$SCRATCH_RTDEV" ]; then
 	    _notrun "Project quotas not supported on realtime filesystem"
 	fi
     fi
 }

 #
 # Do we have GETNEXTQUOTA?  Querying ID 0 should work.
 #
 _require_getnextquota()
 {
 	_require_test_program "test-nextquota"
 	$here/src/test-nextquota -i 0 -u -d $SCRATCH_DEV &> $seqres.full || \
 		_notrun "No GETNEXTQUOTA support"
 }

 #
 # ext4 (for now) is unique in that we must enable the project quota feature
 # prior to mount.  This is a relatively new feature ...
 _scratch_enable_pquota()
 {
 	case $FSTYP in
 	ext2|ext3|ext4)
 		tune2fs -O quota,project $SCRATCH_DEV >>$seqres.full 2>&1
 		_try_scratch_mount >/dev/null 2>&1 \
 			|| _notrun "kernel doesn't support project feature on $FSTYP"
 		_scratch_unmount
 		;;
 	f2fs)
 		_scratch_mkfs "-O extra_attr -O quota -O project_quota" >> $seqres.full 2>&1
 		;;
 	esac
 }

 _require_setquota_project()
 {
 	setquota --help 2>&1 | \
 		grep -q -- "-P, --project[[:space:]]*set limits for project"
 	if [ "$?" -ne 0 ];then
 		_notrun "setquota doesn't support project quota (-P)"
 	fi
 }

 #
 # checks for user nobody in /etc/passwd and /etc/group.
 #
 _require_nobody()
 {
     _cat_passwd | grep -q '^nobody'
     [ $? -ne 0 ] && _notrun "password file does not contain user nobody."

     _cat_group | grep -Eq '^no(body|group)'
     [ $? -ne 0 ] && _notrun "group file does not contain nobody/nogroup."
 }

 # create a file as a specific user (uid)
 # takes filename, id, type (u/g/p), blocksize, blockcount
 #
 _file_as_id()
 {
     [ $# != 5 ] && _fail "broken call to _file_as_id in test $seq"

     parent=`dirname $1`
     if [ $3 = p ]; then
 	echo PARENT: $XFS_IO_PROG -r -c "chproj $2" -c "chattr +P" $parent >>$seqres.full
 	$XFS_IO_PROG -r -c "chproj $2" -c "chattr +P" $parent >>$seqres.full 2>&1
 	magik='$>'	# (irrelevent, above set projid-inherit-on-parent)
     elif [ $3 = u ]; then
 	magik='$>'	# perlspeak for effective uid
     elif [ $3 = g ]; then
 	magik='$)'	# perlspeak for effective gid
     else
 	_notrun "broken type in call to _file_as_id in test $seq"
     fi

     perl <<EOF >>$seqres.full 2>&1
 	\$| = 1;
 	$magik = $2;
 	if ($5 == 0) {
 	    print "touch $1";
 	    exec "touch $1";
 	} else {
 	    print "dd if=/dev/zero of=$1 bs=$4 count=$5";
 	    exec "dd if=/dev/zero of=$1 bs=$4 count=$5";
 	}
 EOF
 # for debugging the above euid change, try... [need write in cwd]
 #	exec "dd if=/dev/zero of=$1 bs=$4 count=$5 >>$seqres.full 2>&1";

     if [ $3 = p ]; then
 	echo PARENT: $XFS_IO_PROG -r -c "chproj 0" -c "chattr -P" $parent >>$seqres.full
 	$XFS_IO_PROG -r -c "chproj 0" -c "chattr -P" $parent >>$seqres.full 2>&1
     fi
 }

 _choose_uid()
 {
     _cat_passwd | grep '^nobody' | perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[2],$a[0] }'
 }

 _choose_gid()
 {
     _cat_group | grep -E '^no(body|group)' | perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[2],$a[0] }'
 }

 _choose_prid()
 {
     if [ "X$projid_file" == "X" ]; then
 	projid_file=/etc/projid
     fi
     if [ ! -f $projid_file ]; then
 	echo 0
 	return
     fi
     perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[1],$a[0] }' \
 	$projid_file
 }

 _qmount()
 {
     _scratch_unmount >/dev/null 2>&1
     _try_scratch_mount || _fail "qmount failed"
     # xfs doesn't need these setups and quotacheck even fails on xfs
     # redirect the output to $seqres.full for debug purpose and ignore results
     if [ "$FSTYP" != "xfs" ]; then
         quotacheck -ug $SCRATCH_MNT >>$seqres.full 2>&1
         quotaon -ug $SCRATCH_MNT >>$seqres.full 2>&1
         # try to turn on project quota if it's supported
         if quotaon --help 2>&1 | grep -q -- '--project'; then
             quotaon --project $SCRATCH_MNT >>$seqres.full 2>&1
         fi
     fi
     chmod ugo+rwx $SCRATCH_MNT
 }

 #
 # Ensures only the given quota mount option is used
 #
 _qmount_option()
 {
 	OPTS=$1

 	# Replace any user defined quota options
 	# with the quota option that we want.
 	# Simplest to do this rather than delete existing ones first because
 	# of the variety of commas and spaces and multiple -o's
 	# that we'd have to cater for. Doesn't matter if we have duplicates.
 	# Use "QUOTA" string so that we don't have any substring confusion
 	# thanks to "quota" which will match with "uquota" and "gquota" etc.
 	export MOUNT_OPTIONS=`echo $MOUNT_OPTIONS \
 	| sed   -e 's/uquota/QUOTA/g'      \
 		-e 's/usrquota/QUOTA/g'    \
 		-e 's/usrjquota=[^, ]*/QUOTA/g' \
 		-e 's/gquota/QUOTA/g'      \
 		-e 's/grpquota/QUOTA/g'    \
 		-e 's/grpjquota=[^, ]*/QUOTA/g' \
 		-e 's/\bpquota/QUOTA/g'    \
 		-e 's/prjquota/QUOTA/g'    \
 		-e 's/quota/QUOTA/g'       \
 		-e 's/uqnoenforce/QUOTA/g' \
 		-e 's/gqnoenforce/QUOTA/g' \
 		-e 's/pqnoenforce/QUOTA/g' \
 		-e 's/qnoenforce/QUOTA/g'  \
 		-e "s/QUOTA/$OPTS/g"`

 	# ext4 doesn't _do_ "-o pquota/prjquota" because reasons
 	# Switch it to "quota" to enable mkfs-time pquota
 	if [[ "$FSTYP" == ext[234] ]]; then
 		OPTS=`echo $OPTS \
 		| sed	-e 's/\bpquota/quota/g'	\
 			-e 's/prjquota/quota/g'`
 	fi
 	# Ensure we have the given quota option - duplicates are fine
 	if [ -n "$OPTS" ]; then
 		export MOUNT_OPTIONS="$MOUNT_OPTIONS -o $OPTS"
 	fi
 	echo "MOUNT_OPTIONS = $MOUNT_OPTIONS" >>$seqres.full
 }

 _check_quota_usage()
 {
 	# Sync to get delalloc to disk
 	sync

 	# kill caches to guarantee removal speculative delalloc
 	# XXX: really need an ioctl instead of this big hammer
 	echo 3 > /proc/sys/vm/drop_caches

 	VFS_QUOTA=0
 	case $FSTYP in
 	ext2|ext3|ext4|ext4dev|f2fs|reiserfs|gfs2|bcachefs)
 		VFS_QUOTA=1
 		quotaon -f -u -g $SCRATCH_MNT 2>/dev/null
 		;;
 	xfs)
 		# Only way to make this reliable with cow/delalloc/speculative
 		# preallocations is to unmount and remount the whole mess...
 		_scratch_unmount
 		_scratch_mount "-o usrquota,grpquota"
 		;;
 	*)
 		;;
 	esac
 	repquota -u -n $SCRATCH_MNT  | grep -v "^#0" | _filter_scratch |
 		sort >$tmp.user.orig
 	repquota -g -n $SCRATCH_MNT  | grep -v "^#0" | _filter_scratch |
 		sort >$tmp.group.orig
 	if [ $VFS_QUOTA -eq 1 ]; then
 		quotacheck -u -g $SCRATCH_MNT 2>/dev/null
 	else
 		# use XFS method to force quotacheck
 		xfs_quota -x -c "off -ug" $SCRATCH_MNT
 		_scratch_unmount
 		_scratch_mount "-o usrquota,grpquota"
 	fi
 	repquota -u -n $SCRATCH_MNT  | grep -v "^#0" | _filter_scratch |
 		sort >$tmp.user.checked
 	repquota -g -n $SCRATCH_MNT  | grep -v "^#0" | _filter_scratch |
 		sort >$tmp.group.checked
 	if [ $VFS_QUOTA -eq 1 ]; then
 		quotaon -u -g $SCRATCH_MNT 2>/dev/null
 	fi
 	{
 		echo "Comparing user usage"
 		diff $tmp.user.orig $tmp.user.checked
 	} && {
 		echo "Comparing group usage"
 		diff $tmp.group.orig $tmp.group.checked
 	}
 }

 # Report the block usage of root, $qa_user, and nobody
 _report_quota_blocks() {
 	repquota $1 | grep -E "^($qa_user|root|nobody)" | awk '{print $1, $3, $4, $5}' | sort -r
 }

 # Report the inode usage of root, $qa_user, and nobody
 _report_quota_inodes() {
 	repquota $1 | grep -E "^($qa_user|root|nobody)" | awk '{print $1, $6, $7, $8}' | sort -r
 }

 # Determine which type of quota we're using
 _qsetup()
 {
 	opt=$1
 	enforce=0
 	if [ $opt = "u" -o $opt = "uno" ]; then
 		type=u
 		eval `_choose_uid`
 	elif [ $opt = "g" -o $opt = "gno" ]; then
 		type=g
 		eval `_choose_gid`
 	elif [ $opt = "p" -o $opt = "pno" ]; then
 		type=p
 		eval `_choose_prid`
 	fi
 	[ $opt = "u" -o $opt = "g" -o $opt = "p" ] && enforce=1

 	echo "Using type=$type id=$id" >> $seqres.full
 }

 # Help to create project quota on directory, works for xfs and other fs.
 # Usage: _create_project_quota <dirname> <projid> [name]
 # Although the [name] is optional, better to specify it if need a fixed name.
 _create_project_quota()
 {
 	local prjdir=$1
 	local id=$2
 	local name=$3

 	if [ -z "$name" ];then
 		name=`echo $projdir | tr \/ \_`
 	fi

 	rm -rf $prjdir
 	mkdir $prjdir
 	chmod ugo+rwx $prjdir

 	if [ -f /etc/projects -a ! -f $tmp.projects.bk ];then
 		cat /etc/projects > $tmp.projects.bk
 		echo >/etc/projects
 	fi
 	if [ -f /etc/projid -a ! -f $tmp.projid.bk ];then
 		cat /etc/projid > $tmp.projid.bk
 		echo >/etc/projid
 	fi

 	cat >>/etc/projects <<EOF
 $id:$prjdir
 EOF
 	cat >>/etc/projid <<EOF
 $name:$id
 EOF
 	$XFS_IO_PROG -r -c "chproj $id" -c "chattr +P" $prjdir
 }

 # If you've called _create_project_quota, then use this function in _cleanup
 _restore_project_quota()
 {
 	if [ -f $tmp.projects.bk ];then
 		cat $tmp.projects.bk > /etc/projects && \
 			rm -f $tmp.projects.bk
 	else
 		rm -f /etc/projects
 	fi
 	if [ -f $tmp.projid.bk ];then
 		cat $tmp.projid.bk > /etc/projid && \
 			rm -f $tmp.projid.bk
 	else
 		rm -f /etc/projid
 	fi
 }

 # make sure this script returns success
 /bin/true
	##/bin/bash
	# SPDX-License-Identifier: GPL-2.0
	# Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. All Rights Reserved.
	#
	# Functions useful for quota tests

	# checks that the generic quota support in the kernel is enabled
	# and that we have valid quota user tools installed.
	#
	_require_quota()
	{
	[ -n "$QUOTA_PROG" ] \|\| _notrun "Quota user tools not installed"

	case $FSTYP in
	ext2\|ext3\|ext4\|ext4dev\|f2fs\|reiserfs)
	if [ ! -d /proc/sys/fs/quota ]; then
	_notrun "Installed kernel does not support quotas"
	fi
	;;
	gfs2\|ocfs2\|bcachefs)
	;;
	xfs)
	if [ ! -f /proc/fs/xfs/xqmstat ]; then
	_notrun "Installed kernel does not support XFS quotas"
	fi
	if [ "$USE_EXTERNAL" = yes -a ! -z "$TEST_RTDEV" ]; then
	_notrun "Quotas not supported on realtime test device"
	fi
	if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ]; then
	_notrun "Quotas not supported on realtime scratch device"
	fi
	;;
	*)
	_notrun "disk quotas not supported by this filesystem type: $FSTYP"
	;;
	esac
	}

	#
	# checks that the XFS quota support in the kernel is enabled
	# and that we have valid quota user tools installed.
	#
	_require_xfs_quota()
	{
	$here/src/feature -q $TEST_DEV
	[ $? -ne 0 ] && _notrun "Installed kernel does not support XFS quota"
	if [ "$USE_EXTERNAL" = yes -a ! -z "$TEST_RTDEV" ]; then
	_notrun "Quotas not supported on realtime test device"
	fi
	if [ "$USE_EXTERNAL" = yes -a ! -z "$SCRATCH_RTDEV" ]; then
	_notrun "Quotas not supported on realtime scratch device"
	fi
	[ -n "$XFS_QUOTA_PROG" ] \|\| _notrun "XFS quota user tools not installed"
	}

	# Check that a mounted fs has a particular type of quota accounting turned on.
	#
	# The first argument must be the data device of a mounted fs. It must not be
	# the actual mountpath.
	#
	# The second argument is the quota type ('usrquota', 'grpquota', 'prjquota',
	# 'any', or 'all').
	_xfs_quota_acct_enabled()
	{
	local dev="$1"
	local qtype="$2"
	local f_args=()
	local any=

	case "$qtype" in
	"usrquota"\|"uquota") f_args=("-U");;
	"grpquota"\|"gquota") f_args=("-G");;
	"prjquota"\|"pquota") f_args=("-P");;
	"all") f_args=("-U" "-G" "-P");;
	"any") f_args=("-U" "-G" "-P"); any=1;;
	*) echo "$qtype: Unknown quota type."; return 1;;
	esac

	if [ "$any" = "1" ]; then
	for arg in "$f_args"; do
	$here/src/feature "$arg" "$dev" && return 0
	done
	return 1
	fi

	$here/src/feature "${f_args[@]}" "$dev"
	}

	# Require that a mounted fs has a particular type of quota turned on. This
	# takes the same arguments as _xfs_quota_acct_enabled. If the third argument is
	# '-u' (or is empty and dev is $SCRATCH_DEV) the fs will be unmounted on
	# failure.
	_require_xfs_quota_acct_enabled()
	{
	local dev="$1"
	local qtype="$2"
	local umount="$3"
	local fsname="$dev"

	_xfs_quota_acct_enabled "$dev" "$qtype" "$qmode" && return 0

	if [ -z "$umount" ] && [ "$dev" = "$SCRATCH_DEV" ]; then
	umount="-u"
	fi
	test "$umount" = "-u" && umount "$dev" &>/dev/null

	case "$dev" in
	"$TEST_DEV") fsname="test";;
	"$SCRATCH_DEV") fsname="scratch";;
	esac

	case "$qtype" in
	"any") qtype="any quotas";;
	"all") qtype="all quotas";;
	esac

	_notrun "$qtype: accounting not enabled on $fsname filesystem."
	}

	#
	# checks that xfs_quota can operate on foreign (non-xfs) filesystems
	# Skips check on xfs filesystems, old xfs_quota is fine there.
	# Appends "-f" to enable foreign behavior on non-xfs filesystems if available.
	#
	_require_xfs_quota_foreign()
	{
	if [ "$FSTYP" != "xfs" ]; then
	$XFS_QUOTA_PROG -f -V &>/dev/null \|\| \
	_notrun "xfs_quota binary does not support foreign filesystems"
	XFS_QUOTA_PROG="$XFS_QUOTA_PROG -f"
	fi
	}

	#
	# Checks that the project quota support in the kernel is enabled.
	# The device must be mounted for detection to work properly.
	#
	_require_prjquota()
	{
	[ -n "$1" ] && _dev="$1" \|\| _dev="$TEST_DEV"
	if [[ "$FSTYP" == ext[234] ]]; then
	dumpe2fs -h $_dev 2>&1 \| grep -qw project \|\| \
	_notrun "Project quota not available on this $FSTYP"
	fi
	if [ "$FSTYP" == "f2fs" ]; then
	dump.f2fs $_dev 2>&1 \| grep -qw project_quota
	[ $? -ne 0 ] && _notrun "Project quota not enabled in this device $_dev"
	dump.f2fs $_dev 2>&1 \| grep -qw quota_ino
	[ $? -ne 0 ] && _notrun "quota sysfile not enabled in this device $_dev"
	cat /sys/fs/f2fs/features/project_quota \| grep -qw supported
	[ $? -ne 0 ] && _notrun "Installed kernel does not support project quotas"
	return
	fi
	$here/src/feature -P $_dev
	[ $? -ne 0 ] && _notrun "Installed kernel does not support project quotas"
	if [ "$USE_EXTERNAL" = yes ]; then
	if [ -n "$TEST_RTDEV" -o -n "$SCRATCH_RTDEV" ]; then
	_notrun "Project quotas not supported on realtime filesystem"
	fi
	fi
	}

	#
	# Do we have GETNEXTQUOTA? Querying ID 0 should work.
	#
	_require_getnextquota()
	{
	_require_test_program "test-nextquota"
	$here/src/test-nextquota -i 0 -u -d $SCRATCH_DEV &> $seqres.full \|\| \
	_notrun "No GETNEXTQUOTA support"
	}

	#
	# ext4 (for now) is unique in that we must enable the project quota feature
	# prior to mount. This is a relatively new feature ...
	_scratch_enable_pquota()
	{
	case $FSTYP in
	ext2\|ext3\|ext4)
	tune2fs -O quota,project $SCRATCH_DEV >>$seqres.full 2>&1
	_try_scratch_mount >/dev/null 2>&1 \
	\|\| _notrun "kernel doesn't support project feature on $FSTYP"
	_scratch_unmount
	;;
	f2fs)
	_scratch_mkfs "-O extra_attr -O quota -O project_quota" >> $seqres.full 2>&1
	;;
	esac
	}

	_require_setquota_project()
	{
	setquota --help 2>&1 \| \
	grep -q -- "-P, --project[[:space:]]*set limits for project"
	if [ "$?" -ne 0 ];then
	_notrun "setquota doesn't support project quota (-P)"
	fi
	}

	#
	# checks for user nobody in /etc/passwd and /etc/group.
	#
	_require_nobody()
	{
	_cat_passwd \| grep -q '^nobody'
	[ $? -ne 0 ] && _notrun "password file does not contain user nobody."

	_cat_group \| grep -Eq '^no(body\|group)'
	[ $? -ne 0 ] && _notrun "group file does not contain nobody/nogroup."
	}

	# create a file as a specific user (uid)
	# takes filename, id, type (u/g/p), blocksize, blockcount
	#
	_file_as_id()
	{
	[ $# != 5 ] && _fail "broken call to _file_as_id in test $seq"

	parent=`dirname $1`
	if [ $3 = p ]; then
	echo PARENT: $XFS_IO_PROG -r -c "chproj $2" -c "chattr +P" $parent >>$seqres.full
	$XFS_IO_PROG -r -c "chproj $2" -c "chattr +P" $parent >>$seqres.full 2>&1
	magik='$>' # (irrelevent, above set projid-inherit-on-parent)
	elif [ $3 = u ]; then
	magik='$>' # perlspeak for effective uid
	elif [ $3 = g ]; then
	magik='$)' # perlspeak for effective gid
	else
	_notrun "broken type in call to _file_as_id in test $seq"
	fi

	perl <<EOF >>$seqres.full 2>&1
	\$\| = 1;
	$magik = $2;
	if ($5 == 0) {
	print "touch $1";
	exec "touch $1";
	} else {
	print "dd if=/dev/zero of=$1 bs=$4 count=$5";
	exec "dd if=/dev/zero of=$1 bs=$4 count=$5";
	}
	EOF
	# for debugging the above euid change, try... [need write in cwd]
	# exec "dd if=/dev/zero of=$1 bs=$4 count=$5 >>$seqres.full 2>&1";

	if [ $3 = p ]; then
	echo PARENT: $XFS_IO_PROG -r -c "chproj 0" -c "chattr -P" $parent >>$seqres.full
	$XFS_IO_PROG -r -c "chproj 0" -c "chattr -P" $parent >>$seqres.full 2>&1
	fi
	}

	_choose_uid()
	{
	_cat_passwd \| grep '^nobody' \| perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[2],$a[0] }'
	}

	_choose_gid()
	{
	_cat_group \| grep -E '^no(body\|group)' \| perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[2],$a[0] }'
	}

	_choose_prid()
	{
	if [ "X$projid_file" == "X" ]; then
	projid_file=/etc/projid
	fi
	if [ ! -f $projid_file ]; then
	echo 0
	return
	fi
	perl -ne '@a = split(/:/); END { printf "id=%d name=%s\n", $a[1],$a[0] }' \
	$projid_file
	}

	_qmount()
	{
	_scratch_unmount >/dev/null 2>&1
	_try_scratch_mount \|\| _fail "qmount failed"
	# xfs doesn't need these setups and quotacheck even fails on xfs
	# redirect the output to $seqres.full for debug purpose and ignore results
	if [ "$FSTYP" != "xfs" ]; then
	quotacheck -ug $SCRATCH_MNT >>$seqres.full 2>&1
	quotaon -ug $SCRATCH_MNT >>$seqres.full 2>&1
	# try to turn on project quota if it's supported
	if quotaon --help 2>&1 \| grep -q -- '--project'; then
	quotaon --project $SCRATCH_MNT >>$seqres.full 2>&1
	fi
	fi
	chmod ugo+rwx $SCRATCH_MNT
	}

	#
	# Ensures only the given quota mount option is used
	#
	_qmount_option()
	{
	OPTS=$1

	# Replace any user defined quota options
	# with the quota option that we want.
	# Simplest to do this rather than delete existing ones first because
	# of the variety of commas and spaces and multiple -o's
	# that we'd have to cater for. Doesn't matter if we have duplicates.
	# Use "QUOTA" string so that we don't have any substring confusion
	# thanks to "quota" which will match with "uquota" and "gquota" etc.
	export MOUNT_OPTIONS=`echo $MOUNT_OPTIONS \
	\| sed -e 's/uquota/QUOTA/g' \
	-e 's/usrquota/QUOTA/g' \
	-e 's/usrjquota=[^, ]*/QUOTA/g' \
	-e 's/gquota/QUOTA/g' \
	-e 's/grpquota/QUOTA/g' \
	-e 's/grpjquota=[^, ]*/QUOTA/g' \
	-e 's/\bpquota/QUOTA/g' \
	-e 's/prjquota/QUOTA/g' \
	-e 's/quota/QUOTA/g' \
	-e 's/uqnoenforce/QUOTA/g' \
	-e 's/gqnoenforce/QUOTA/g' \
	-e 's/pqnoenforce/QUOTA/g' \
	-e 's/qnoenforce/QUOTA/g' \
	-e "s/QUOTA/$OPTS/g"`

	# ext4 doesn't _do_ "-o pquota/prjquota" because reasons
	# Switch it to "quota" to enable mkfs-time pquota
	if [[ "$FSTYP" == ext[234] ]]; then
	OPTS=`echo $OPTS \
	\| sed -e 's/\bpquota/quota/g' \
	-e 's/prjquota/quota/g'`
	fi
	# Ensure we have the given quota option - duplicates are fine
	if [ -n "$OPTS" ]; then
	export MOUNT_OPTIONS="$MOUNT_OPTIONS -o $OPTS"
	fi
	echo "MOUNT_OPTIONS = $MOUNT_OPTIONS" >>$seqres.full
	}

	_check_quota_usage()
	{
	# Sync to get delalloc to disk
	sync

	# kill caches to guarantee removal speculative delalloc
	# XXX: really need an ioctl instead of this big hammer
	echo 3 > /proc/sys/vm/drop_caches

	VFS_QUOTA=0
	case $FSTYP in
	ext2\|ext3\|ext4\|ext4dev\|f2fs\|reiserfs\|gfs2\|bcachefs)
	VFS_QUOTA=1
	quotaon -f -u -g $SCRATCH_MNT 2>/dev/null
	;;
	xfs)
	# Only way to make this reliable with cow/delalloc/speculative
	# preallocations is to unmount and remount the whole mess...
	_scratch_unmount
	_scratch_mount "-o usrquota,grpquota"
	;;
	*)
	;;
	esac
	repquota -u -n $SCRATCH_MNT \| grep -v "^#0" \| _filter_scratch \|
	sort >$tmp.user.orig
	repquota -g -n $SCRATCH_MNT \| grep -v "^#0" \| _filter_scratch \|
	sort >$tmp.group.orig
	if [ $VFS_QUOTA -eq 1 ]; then
	quotacheck -u -g $SCRATCH_MNT 2>/dev/null
	else
	# use XFS method to force quotacheck
	xfs_quota -x -c "off -ug" $SCRATCH_MNT
	_scratch_unmount
	_scratch_mount "-o usrquota,grpquota"
	fi
	repquota -u -n $SCRATCH_MNT \| grep -v "^#0" \| _filter_scratch \|
	sort >$tmp.user.checked
	repquota -g -n $SCRATCH_MNT \| grep -v "^#0" \| _filter_scratch \|
	sort >$tmp.group.checked
	if [ $VFS_QUOTA -eq 1 ]; then
	quotaon -u -g $SCRATCH_MNT 2>/dev/null
	fi
	{
	echo "Comparing user usage"
	diff $tmp.user.orig $tmp.user.checked
	} && {
	echo "Comparing group usage"
	diff $tmp.group.orig $tmp.group.checked
	}
	}

	# Report the block usage of root, $qa_user, and nobody
	_report_quota_blocks() {
	repquota $1 \| grep -E "^($qa_user\|root\|nobody)" \| awk '{print $1, $3, $4, $5}' \| sort -r
	}

	# Report the inode usage of root, $qa_user, and nobody
	_report_quota_inodes() {
	repquota $1 \| grep -E "^($qa_user\|root\|nobody)" \| awk '{print $1, $6, $7, $8}' \| sort -r
	}

	# Determine which type of quota we're using
	_qsetup()
	{
	opt=$1
	enforce=0
	if [ $opt = "u" -o $opt = "uno" ]; then
	type=u
	eval `_choose_uid`
	elif [ $opt = "g" -o $opt = "gno" ]; then
	type=g
	eval `_choose_gid`
	elif [ $opt = "p" -o $opt = "pno" ]; then
	type=p
	eval `_choose_prid`
	fi
	[ $opt = "u" -o $opt = "g" -o $opt = "p" ] && enforce=1

	echo "Using type=$type id=$id" >> $seqres.full
	}

	# Help to create project quota on directory, works for xfs and other fs.
	# Usage: _create_project_quota <dirname> <projid> [name]
	# Although the [name] is optional, better to specify it if need a fixed name.
	_create_project_quota()
	{
	local prjdir=$1
	local id=$2
	local name=$3

	if [ -z "$name" ];then
	name=`echo $projdir \| tr \/ \_`
	fi

	rm -rf $prjdir
	mkdir $prjdir
	chmod ugo+rwx $prjdir

	if [ -f /etc/projects -a ! -f $tmp.projects.bk ];then
	cat /etc/projects > $tmp.projects.bk
	echo >/etc/projects
	fi
	if [ -f /etc/projid -a ! -f $tmp.projid.bk ];then
	cat /etc/projid > $tmp.projid.bk
	echo >/etc/projid
	fi

	cat >>/etc/projects <<EOF
	$id:$prjdir
	EOF
	cat >>/etc/projid <<EOF
	$name:$id
	EOF
	$XFS_IO_PROG -r -c "chproj $id" -c "chattr +P" $prjdir
	}

	# If you've called _create_project_quota, then use this function in _cleanup
	_restore_project_quota()
	{
	if [ -f $tmp.projects.bk ];then
	cat $tmp.projects.bk > /etc/projects && \
	rm -f $tmp.projects.bk
	else
	rm -f /etc/projects
	fi
	if [ -f $tmp.projid.bk ];then
	cat $tmp.projid.bk > /etc/projid && \
	rm -f $tmp.projid.bk
	else
	rm -f /etc/projid
	fi
	}

	# make sure this script returns success
	/bin/true