mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
0c1a95d067
Fully scripted conversion, see script in initial SPDX license commit message. Signed-off-by: Dave Chinner <dchinner@redhat.com>
72 lines
1.6 KiB
Bash
Executable File
72 lines
1.6 KiB
Bash
Executable File
#! /bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
# Copyright (c) 2017 Huawei. All Rights Reserved.
|
|
#
|
|
# FS QA Test 040
|
|
#
|
|
# chattr with [iap..] attributes open file for read-only and
|
|
# invoke ioctl(). If we chattr a lower file in overlay, it
|
|
# will get the lower file but not trigger copy-up, so ioctl()
|
|
# lead to modification of that lower file.
|
|
#
|
|
# Upstream Commit 7c6893e3c9ab ("ovl: don't allow writing
|
|
# ioctl on lower layer") return EPERM for this case to avoid
|
|
# this issue.
|
|
#
|
|
seq=`basename $0`
|
|
seqres=$RESULT_DIR/$seq
|
|
echo "QA output created by $seq"
|
|
|
|
here=`pwd`
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
_cleanup()
|
|
{
|
|
cd /
|
|
$CHATTR_PROG -i $lowerdir/foo > /dev/null 2>&1
|
|
$CHATTR_PROG -i $upperdir/foo > /dev/null 2>&1
|
|
rm -f $tmp.*
|
|
}
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/filter
|
|
|
|
# remove previous $seqres.full before test
|
|
rm -f $seqres.full
|
|
|
|
# real QA test starts here
|
|
_supported_fs overlay
|
|
_supported_os Linux
|
|
_require_scratch
|
|
_require_chattr i
|
|
|
|
# remove all files from previous runs
|
|
_scratch_mkfs
|
|
|
|
# prepare lower test file
|
|
lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
|
|
upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
|
|
mkdir -p $lowerdir
|
|
touch $lowerdir/foo
|
|
|
|
# mounting overlay
|
|
_scratch_mount
|
|
|
|
# Try to add immutable attributes in overlay, it will
|
|
# open file for read-only and invoke ioctl(), it should not
|
|
# modify lower origin file.
|
|
$CHATTR_PROG +i $SCRATCH_MNT/foo > /dev/null 2>&1
|
|
|
|
$UMOUNT_PROG $SCRATCH_MNT
|
|
|
|
# touching origin file in lower, should succeed
|
|
touch $lowerdir/foo
|
|
|
|
# success, all done
|
|
echo "Silence is golden"
|
|
status=0
|
|
exit
|