Files
apfstests/tests/generic/403
T
Zorro Lang 794f4594fb fstests: filter redundant output by getfattr
When getfattr dumps values of all extended attributes (-d option),
it doesn't print empty extended attributes. e.g: user.name. But from
attr-2.4.48 this behavior is changed,  new getfattr prints
user.name="".

The {=""} will break the golden image, so filter the redundant =""
at the end if it has.

Signed-off-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2018-08-26 20:55:28 +08:00

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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Red hat, Inc. All Rights Reserved.
#
# FS QA Test 403
#
# Test racing getxattr requests against large xattr add and remove loop. This
# reproduces a bug on XFS where a getxattr of an existing attribute spuriously
# returned failure due to races with attribute fork conversion.
#
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 /
rm -f $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/attr
# remove previous $seqres.full before test
rm -f $seqres.full
# real QA test starts here
# Modify as appropriate.
_supported_fs generic
_supported_os Linux
_require_scratch
_require_attrs
_scratch_mkfs > $seqres.full 2>&1 || _fail "mkfs"
_scratch_mount
# create xattr small enough for local format on XFS
touch $SCRATCH_MNT/file
$SETFATTR_PROG -n trusted.small -v a $SCRATCH_MNT/file
# start a background getxattr loop for the existing xattr
runfile="$tmp.getfattr"
touch $runfile
while [ -e $runfile ]; do
_getfattr --absolute-names -n trusted.small $SCRATCH_MNT/file \
> /dev/null || break
done &
getfattr_pid=$!
# while the above is spinning, add and remove a large attribute to cause back
# and forth inode attribute fork conversion
largeval=`for i in $(seq 0 511); do echo -n a; done`
for i in $(seq 0 99); do
$SETFATTR_PROG -n trusted.big -v $largeval $SCRATCH_MNT/file
$SETFATTR_PROG -x trusted.big $SCRATCH_MNT/file
done
rm -f $runfile
wait > /dev/null 2>&1
echo Silence is golden
# success, all done
status=0
exit