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Date:   Tue,  2 Nov 2021 11:59:11 +0100
From:   Lukas Czerner <lczerner@...hat.com>
To:     fstests@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, guan@...u.me
Subject: [PATCH v4] ext4: add test for all ext4/ext3/ext2 mount options

Add test to validate that all the ext4, ext3 and ext2 are properly
recognized, validate and applied to avoid regressions as ext4 moves to
the new mount API.

Signed-off-by: Lukas Czerner <lczerner@...hat.com>
---
V2: Move minimum kernel version requirement up to 5.12
    Rewrite kernel_gte() to work correctly
V3: Rename functions to not start with _
V4: Check kernel config file to make sure the test works with
    various kernel configuration

 tests/ext4/053     | 645 +++++++++++++++++++++++++++++++++++++++++++++
 tests/ext4/053.out |   2 +
 2 files changed, 647 insertions(+)
 create mode 100755 tests/ext4/053
 create mode 100644 tests/ext4/053.out

diff --git a/tests/ext4/053 b/tests/ext4/053
new file mode 100755
index 00000000..cefe9b54
--- /dev/null
+++ b/tests/ext4/053
@@ -0,0 +1,645 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 Red Hat, Inc., Lukas Czerner <lczerner@...hat.com>.
+#
+# FS QA Test 053
+#
+# Sanity check of ext4 mount options
+#
+. ./common/preamble
+_begin_fstest auto mount
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
+	if [ -n "$LOOP_LOGDEV" ];then
+		_destroy_loop_device $LOOP_LOGDEV 2>/dev/null
+	fi
+	rm -f $tmp.*
+}
+
+_has_kernel_config()
+{
+	option=$1
+	config="/lib/modules/$(uname -r)/build/.config"
+	grep -qE "^${option}=[my]" $config
+}
+
+_require_kernel_config()
+{
+	_has_kernel_config $1 || _notrun "Installed kernel not built with $1"
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/quota
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+echo "Silence is golden."
+
+SIZE=$((1024 * 1024))	# 1GB in KB
+LOGSIZE=$((10 *1024))	# 10MB in KB
+
+_supported_fs ext2 ext3 ext4
+_require_scratch_size $SIZE
+_require_quota
+_require_loop
+_require_command "$TUNE2FS_PROG" tune2fs
+MKE2FS_PROG=$(type -P mke2fs)
+_require_command "$MKE2FS_PROG" mke2fs
+_require_kernel_config CONFIG_QFMT_V2
+
+LOG=""
+print_log() {
+	LOG="$LOG $@"
+}
+
+KERNEL_VERSION=`uname -r | cut -d'.' -f1,2`
+KERNEL_MAJ=${KERNEL_VERSION%.*}
+KERNEL_MIN=${KERNEL_VERSION#*.}
+
+kernel_gte() {
+	major=${1%.*}
+	minor=${1#*.}
+
+	if [ $KERNEL_MAJ -gt $major ]; then
+		return 0
+	elif [[ $KERNEL_MAJ -eq $major && $KERNEL_MIN -ge $minor ]]; then
+		return 0
+	fi
+	return 1
+}
+
+
+# The aim here is to keep the mount options behaviour stable going forward
+# so there is not much point in testing older kernels.
+kernel_gte 5.12 || _notrun "This test is only relevant for kernel versions 5.12 and higher"
+
+IGNORED="remount,defaults,ignored,removed"
+CHECK_MINFO="lazytime,noatime,nodiratime,noexec,nosuid,ro"
+ERR=0
+
+test_mnt() {
+	findmnt -n $SCRATCH_DEV > /dev/null 2>&1
+	[ $? -ne 0 ] && return $?
+
+	if [ $# -eq 1 ]; then
+		OPTS=$1
+	elif [ $# -eq 2 ]; then
+		OPTS=$2
+	else
+		return 0
+	fi
+
+	print_log "checking \"$OPTS\" "
+	# test options in /proc/fs/ext4/dev/options
+	(
+	ret=0
+	IFS=','
+	for option in $OPTS; do
+		if echo $IGNORED | grep -w $option; then
+			continue
+		fi
+
+		[ $option = "noload" ] && option="norecovery"
+
+		if [[ $option = ^* ]]; then
+			expected=1
+		else
+			expected=0
+		fi
+		option=${option#^}
+
+		if echo $CHECK_MINFO | grep -w $option; then
+			findmnt -n -o OPTIONS $SCRATCH_DEV | grep $option
+			ret=$?
+		else
+			grep $option /proc/fs/ext4/$(_short_dev $SCRATCH_DEV)/options
+			ret=$?
+		fi
+
+		if [ $ret -ne $expected ]; then
+			exit 1
+		fi
+	done
+	) > /dev/null 2>&1
+	return $?
+}
+
+fail() {
+	print_log "   FAILED"
+	ERR=$((ERR+1))
+	echo $LOG | tee -a $seqres.full
+	LOG=""
+}
+
+ok() {
+	print_log "   OK"
+	echo $LOG >> $seqres.full
+	LOG=""
+}
+
+simple_mount() {
+	_mount $* >> $seqres.full 2>&1
+}
+
+# $1 - can hold -n option, if it does argumetns are shifted
+# $1 - options to test
+# $2 - if provided it's the option string to check for
+do_mnt() {
+	device=$SCRATCH_DEV
+	# If -n argument is provided do not specify $SCRATCH_DEV
+	# usefull for remount
+	if [ "$1" == "-n" ]; then
+		unset device
+		shift
+	fi
+
+	if [ -z "$1" ]; then
+		simple_mount $device $SCRATCH_MNT
+		ret=$?
+	else
+		simple_mount -o $1 $device $SCRATCH_MNT
+		ret=$?
+	fi
+	if [ $ret -eq 0 ]; then
+		test_mnt $1 $2
+		ret=$?
+		[ $ret -ne 0 ] && print_log "(not found)"
+	else
+		print_log "(failed mount)"
+	fi
+
+	return $ret
+}
+
+not_mnt() {
+	# We don't need -t not not_ variant
+	if [ "$1" == "-t" ]; then
+		shift
+	fi
+
+	print_log "SHOULD FAIL mounting $fstype \"$1\" "
+	do_mnt $@
+	if [ $? -eq 0 ]; then
+		fail
+	else
+		ok
+	fi
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+}
+
+mnt_only() {
+	print_log "mounting $fstype \"$1\" "
+	do_mnt $@
+	if [ $? -ne 0 ]; then
+		fail
+	else
+		ok
+	fi
+}
+
+mnt() {
+	# Do we need to run the tune2fs mount option test ?
+	t2fs=0
+	if [ "$1" == "-t" ]; then
+		t2fs=1
+		shift
+	fi
+
+	mnt_only $*
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+
+	[ "$t2fs" -eq 0 ] && return
+
+	op_set=$1
+	if [ $# -eq 1 ]; then
+		check=$1
+	elif [ $# -eq 2 ]; then
+		check=$2
+	else
+		return 0
+	fi
+
+	# some options need translation for tune2fs
+	op_set=$(echo $op_set | sed -e 's/data=journal/journal_data/' \
+				    -e 's/data=ordered/journal_data_ordered/' \
+				    -e 's/data=writeback/journal_data_writeback/')
+	$TUNE2FS_PROG -o $op_set $SCRATCH_DEV > /dev/null 2>&1
+	mnt_only "defaults" $check
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+	if [ "$op_set" = ^* ]; then
+		op_set=${op_set#^}
+	else
+		op_set="^${op_set}"
+	fi
+	$TUNE2FS_PROG -o $op_set $SCRATCH_DEV > /dev/null 2>&1
+}
+
+# $1 - options to mount with
+# $2 - options to remount with
+remount() {
+	# First do this specifying both dev and mnt
+	print_log "mounting $fstype \"$1\" "
+	do_mnt $1
+	[ $? -ne 0 ] && fail && return
+	print_log "remounting \"$2\" "
+	do_mnt remount,$2 $3
+	if [ $? -ne 0 ]; then
+		fail
+		$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+		return
+	else
+		ok
+	fi
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+
+	# Now just specify mnt
+	print_log "mounting $fstype \"$1\" "
+	do_mnt $1
+	[ $? -ne 0 ] && fail && return
+	print_log "remounting (MNT ONLY) \"$2\" "
+	do_mnt -n remount,$2 $3
+	if [ $? -ne 0 ]; then
+		fail
+	else
+		ok
+	fi
+
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+}
+
+# $1 - options to mount with, or -r argument
+# $2 - options to remount with
+not_remount_noumount() {
+	remount_only=0
+	# If -r is specified we're going to do remount only
+	if [ "$1" == "-r" ]; then
+		remount_only=1
+		# Dont need shift since first argument would
+		# have been consumed by mount anyway
+	fi
+
+	if [ $remount_only -eq 0 ]; then
+		print_log "mounting $fstype \"$1\" "
+		do_mnt $1
+		[ $? -ne 0 ] && fail && return
+	fi
+	print_log "SHOULD FAIL remounting $fstype \"$2\" "
+	do_mnt remount,$2 $3
+	if [ $? -eq 0 ]; then
+		fail
+	else
+		ok
+	fi
+
+	# Now just specify mnt
+	print_log "SHOULD FAIL remounting $fstype (MNT ONLY) \"$2\" "
+	do_mnt -n remount,$2 $3
+	if [ $? -eq 0 ]; then
+		fail
+	else
+		ok
+	fi
+}
+
+not_remount() {
+	not_remount_noumount $*
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+}
+
+
+do_mkfs() {
+	$MKE2FS_PROG -T $fstype -Fq $* >> $seqres.full 2>&1 ||
+	_fail "mkfs failed - $MKFS_EXT4_PROG -Fq $* $SCRATCH_DEV"
+}
+
+not_ext2() {
+	if [[ $fstype == "ext2" ]]; then
+		not_$*
+	else
+		$*
+	fi
+}
+
+only_ext4() {
+	if [[ $fstype == "ext4" ]]; then
+		$*
+	else
+		not_$*
+	fi
+}
+
+# Create logdev for external journal
+LOOP_IMG=$tmp.logdev
+truncate -s ${LOGSIZE}k $LOOP_IMG
+LOOP_LOGDEV=`_create_loop_device $LOOP_IMG`
+majmin=`stat -c "%t:%T" $LOOP_LOGDEV`
+LOGDEV_DEVNUM=`echo "${majmin%:*}*2^8 + ${majmin#*:}" | bc`
+
+# Test all the extN file system supported by ext4 driver
+fstype=
+for fstype in ext2 ext3 ext4; do
+
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+	$UMOUNT_PROG $SCRATCH_DEV 2> /dev/null
+
+	do_mkfs $SCRATCH_DEV ${SIZE}k
+
+	# do we have fstype support ?
+	do_mnt
+	if [ $? -ne 0 ]; then
+		print_log "$fstype not supported. Skipping..."
+		ok
+		continue
+	fi
+	if [ ! -f /proc/fs/ext4/$(_short_dev $SCRATCH_DEV)/options ]; then
+		print_log "$fstype not supported. Skipping..."
+		ok
+		continue
+	fi
+
+	$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+
+	not_mnt failme
+	mnt
+	mnt bsddf
+	mnt minixdf
+	mnt grpid
+	mnt -t bsdgroups grpid
+	mnt nogrpid
+	mnt sysvgroups nogrpid
+	mnt resgid=1001
+	mnt resuid=1001
+	mnt sb=131072
+	mnt errors=continue
+	mnt errors=panic
+	mnt errors=remount-ro
+	mnt nouid32
+	mnt debug
+	mnt oldalloc removed
+	mnt orlov removed
+	mnt -t user_xattr
+	mnt nouser_xattr
+
+	if _has_kernel_config CONFIG_EXT4_FS_POSIX_ACL; then
+		mnt -t acl
+	else
+		mnt -t acl ^acl
+	fi
+
+	not_ext2 mnt noload norecovery
+	mnt bh removed
+	mnt nobh removed
+	not_ext2 mnt commit=7
+	mnt min_batch_time=200
+	mnt max_batch_time=10000
+	only_ext4 mnt journal_checksum
+	only_ext4 mnt nojournal_checksum
+	only_ext4 mnt journal_async_commit,data=writeback
+	mnt abort ignored
+	not_ext2 mnt -t data=journal
+	not_ext2 mnt -t data=ordered
+	not_ext2 mnt -t data=writeback
+	not_ext2 mnt data_err=abort
+	not_ext2 mnt data_err=ignore ignored
+	mnt usrjquota=aquota.user,jqfmt=vfsv0
+	not_mnt usrjquota=aquota.user
+	mnt usrjquota= ignored
+	mnt grpjquota=aquota.group,jqfmt=vfsv0
+	not_mnt grpjquota=aquota.group
+	mnt grpjquota= ignored
+	mnt jqfmt=vfsold
+	mnt jqfmt=vfsv0
+	mnt jqfmt=vfsv1
+	mnt grpquota
+	mnt quota
+	mnt noquota
+	mnt usrquota
+	mnt grpquota
+	mnt barrier
+	mnt barrier=0 nobarrier
+	mnt barrier=1 barrier
+	mnt barrier=99 barrier
+	mnt -t nobarrier
+	mnt i_version
+	mnt stripe=512
+	only_ext4 mnt delalloc
+	only_ext4 mnt -t nodelalloc
+	mnt warn_on_error
+	mnt nowarn_on_error
+	not_mnt debug_want_extra_isize=512
+	mnt debug_want_extra_isize=32 ignored
+	mnt mblk_io_submit removed
+	mnt nomblk_io_submit removed
+	mnt -t block_validity
+	mnt noblock_validity
+	mnt inode_readahead_blks=16
+	not_ext2 mnt journal_ioprio=6 ignored
+	mnt auto_da_alloc=0 noauto_da_alloc
+	mnt auto_da_alloc=1 auto_da_alloc
+	mnt auto_da_alloc=95 auto_da_alloc
+	mnt auto_da_alloc
+	mnt noauto_da_alloc
+	only_ext4 mnt dioread_nolock
+	only_ext4 mnt nodioread_nolock
+	only_ext4 mnt dioread_lock nodioread_nolock
+	mnt -t discard
+	mnt nodiscard
+	mnt init_itable=20
+	mnt init_itable
+	mnt init_itable=0
+	mnt noinit_itable
+	mnt max_dir_size_kb=4096
+
+	if _has_kernel_config CONFIG_FS_ENCRYPTION; then
+		mnt test_dummy_encryption
+		mnt test_dummy_encryption=v1
+		mnt test_dummy_encryption=v2
+		not_mnt test_dummy_encryption=v3
+		not_mnt test_dummy_encryption=
+	else
+		mnt test_dummy_encryption ^test_dummy_encryption
+		mnt test_dummy_encryption=v1 ^test_dummy_encryption=v1
+		mnt test_dummy_encryption=v2 ^test_dummy_encryption=v2
+		not_mnt test_dummy_encryption=v3
+		not_mnt test_dummy_encryption=
+	fi
+
+	if _has_kernel_config CONFIG_FS_ENCRYPTION_INLINE_CRYPT; then
+		mnt inlinecrypt
+	else
+		mnt inlinecrypt ^inlinecrypt
+	fi
+
+	mnt prefetch_block_bitmaps removed
+	mnt no_prefetch_block_bitmaps
+	# We don't currently have a way to know that the option has been
+	# applied, so comment it out for now. This should be fixed in the
+	# future.
+	#mnt mb_optimize_scan=0
+	#mnt mb_optimize_scan=1
+	#not_mnt mb_optimize_scan=9
+	#not_mnt mb_optimize_scan=
+	mnt nombcache
+	mnt no_mbcache nombcache
+	mnt check=none removed
+	mnt nocheck removed
+	mnt reservation removed
+	mnt noreservation removed
+	mnt journal=20 ignored
+	not_mnt nonsenseoption
+	not_mnt nonsenseoption=value
+
+	# generic mount options
+	mnt lazytime
+	mnt nolazytime ^lazytime
+	mnt noatime
+	mnt nodiratime
+	mnt noexec
+	mnt nosuid
+	mnt ro
+
+	# generic remount check
+	remount barrier nobarrier
+	remount nobarrier barrier
+	remount discard nodiscard
+	remount nodiscard discard
+
+	# dax mount options
+	simple_mount -o dax=always $SCRATCH_DEV $SCRATCH_MNT > /dev/null 2>&1
+	if [ $? -eq 0 ]; then
+		$UMOUNT_PROG $SCRATCH_MNT 2> /dev/null
+		mnt dax
+		mnt dax=always
+		mnt dax=never
+		mnt dax=inode
+
+		not_remount lazytime dax
+		not_remount dax=always dax=never
+
+		if [[ $fstype != "ext2" ]]; then
+			not_remount data=journal dax
+			not_remount data=journal dax=always
+			not_remount data=journal dax=never
+			not_remount data=journal dax=inode
+		fi
+	fi
+
+	# Quota remount check
+	remount grpquota usrquota
+	remount usrquota quota
+	remount usrquota usrjquota=q.u,jqfmt=vfsv0
+	remount grpquota grpjquota=q.g,jqfmt=vfsv0
+
+	not_remount usrquota grpjquota=q.g,jqfmt=vfsv0
+	not_remount grpquota usrjquota=q.u,jqfmt=vfsv0
+
+	remount quota usrjquota=q.u,jqfmt=vfsv0
+	not_remount quota grpjquota=q.g,jqfmt=vfsv0
+
+	remount usrjquota=q.u,jqfmt=vfsv0 grpjquota=q.g
+	not_remount usrjquota=q.u,jqfmt=vfsv0 usrjquota=q.ua
+	not_remount grpjquota=q.g,jqfmt=vfsv0 grpjquota=q.ga
+
+	remount usrjquota=q.u,jqfmt=vfsv0 usrquota usrjquota=q.u,jqfmt=vfsv0
+	remount grpjquota=q.g,jqfmt=vfsv0 grpquota grpjquota=q.g,jqfmt=vfsv0
+	not_remount usrjquota=q.u,jqfmt=vfsv0 grpquota
+	not_remount grpjquota=q.g,jqfmt=vfsv0 usrquota
+
+	remount grpjquota=q.g,jqfmt=vfsv0 grpjquota= ^grpjquota=
+	remount usrjquota=q.u,jqfmt=vfsv0 usrjquota= ^usrjquota=
+	remount grpjquota=q.g,usrjquota=q.u,jqfmt=vfsv0 grpjquota=,usrjquota= ^grpjquota=,^usrjquota=
+
+	remount jqfmt=vfsv0 grpjquota=q.g
+	remount jqfmt=vfsv0 usrjquota=q.u
+
+	if [[ $fstype != "ext2" ]]; then
+		remount noload data=journal norecovery
+		not_remount data=ordered data=journal
+		not_remount data=journal data=writeback
+		not_remount data=writeback data=ordered
+	fi
+
+	do_mkfs -O journal_dev $LOOP_LOGDEV ${LOGSIZE}k
+	do_mkfs -J device=$LOOP_LOGDEV $SCRATCH_DEV ${SIZE}k
+	mnt defaults
+	mnt journal_path=$LOOP_LOGDEV ignored
+	mnt journal_dev=$LOGDEV_DEVNUM ignored
+	not_mnt journal_path=${LOOP_LOGDEV}_nonexistent ignored
+	not_mnt journal_dev=123456 ignored
+	not_mnt journal_dev=999999999999999 ignored
+
+	do_mkfs -E quotatype=prjquota $SCRATCH_DEV ${SIZE}k
+	mnt prjquota
+
+	# test clearing/changing journalled quota when enabled
+	echo "== Testing active journalled quota" >> $seqres.full
+	mnt_only prjquota,grpjquota=aquota.group,usrjquota=aquota.user,jqfmt=vfsv0
+
+	# Prepare and enable quota
+	quotacheck -vugm $SCRATCH_MNT >> $seqres.full 2>&1
+	quotaon -vug $SCRATCH_MNT >> $seqres.full 2>&1
+
+	not_remount_noumount -r grpjquota=
+	not_remount_noumount -r usrjquota=aaquota.user
+	not_remount_noumount -r grpjquota=aaquota.group
+	not_remount_noumount -r jqfmt=vfsv1
+	not_remount_noumount -r noquota
+	mnt_only remount,usrquota,grpquota ^usrquota,^grpquota
+	$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
+
+	# test clearing/changing quota when enabled
+	do_mkfs -E quotatype=^prjquota $SCRATCH_DEV ${SIZE}k
+	not_mnt prjquota
+	echo "== Testing active non-journalled quota" >> $seqres.full
+	mnt_only grpquota,usrquota
+
+	# Prepare and enable quota
+	quotacheck -vugm $SCRATCH_MNT >> $seqres.full 2>&1
+	quotaon -vug $SCRATCH_MNT >> $seqres.full 2>&1
+
+	not_remount_noumount -r noquota
+	not_remount_noumount -r usrjquota=aquota.user
+	not_remount_noumount -r grpjquota=aquota.group
+	not_remount_noumount -r jqfmt=vfsv1
+	mnt_only remount,grpjquota= grpquota,^grpjquota
+	mnt_only remount,usrjquota= usrquota,^usrjquota
+	mnt_only remount,usrquota,grpquota usrquota,grpquota
+	quotaoff -f $SCRATCH_MNT >> $seqres.full 2>&1
+	mnt_only remount,noquota ^usrquota,^grpquota,quota
+	$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
+
+	# Quota feature
+	echo "== Testing quota feature " >> $seqres.full
+	do_mkfs -O quota -E quotatype=prjquota $SCRATCH_DEV ${SIZE}k
+	mnt usrjquota=aquota.user,jqfmt=vfsv0 ^usrjquota=
+	mnt grpjquota=aquota.user,jqfmt=vfsv0 ^grpjquota=
+	mnt jqfmt=vfsv1 ^jqfmt=
+	mnt prjquota
+	mnt usrquota
+	mnt grpquota
+	not_remount defaults usrjquota=aquota.user
+	not_remount defaults grpjquota=aquota.user
+	not_remount defaults jqfmt=vfsv1
+	remount defaults grpjquota=,usrjquota= ignored
+
+done #for fstype in ext2 ext3 ext4; do
+
+$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
+echo "$ERR errors encountered" >> $seqres.full
+
+status=$ERR
+exit
diff --git a/tests/ext4/053.out b/tests/ext4/053.out
new file mode 100644
index 00000000..d58db7e4
--- /dev/null
+++ b/tests/ext4/053.out
@@ -0,0 +1,2 @@
+QA output created by 053
+Silence is golden.
-- 
2.31.1

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