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https://github.com/linux-apfs/apfstests.git
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Eryu Guan
628d9dbc49
When copying up a directory with opaque xattr set, the xattr was copied up as well, after a remount the opaque flag is honored so the copied-up directory is treated as opaque, which causes files created in the lowerdir to be hidden when using multiple lower directories. This is fixed by "ovl: don't copy up opaqueness". Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
95 lines
2.9 KiB
Bash
Executable File
95 lines
2.9 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test 014
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#
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# Test copy-up of lowerdir with opaque xattr set.
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#
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# When copying up a directory with opaque xattr set, the xattr was copied up as
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# well, after a remount the opaque flag is honored so the copied-up directory
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# is treated as opaque, which causes files created in the lowerdir to be hidden
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# when using multiple lower directories.
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#
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# This is fixed by "ovl: don't copy up opaqueness".
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/attr
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs overlay
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_supported_os Linux
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_require_test
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_require_scratch
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# Remove all files from previous tests
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_scratch_mkfs
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# Create multiple lowerdirs and upperdir, workdir, and testdir on lowerdir
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lowerdir1=$SCRATCH_DEV/lower1
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lowerdir2=$SCRATCH_DEV/lower2
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upperdir=$SCRATCH_DEV/upper
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workdir=$SCRATCH_DEV/workdir
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mkdir -p $lowerdir1 $lowerdir2 $upperdir $workdir
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mkdir -p $lowerdir1/testdir/d
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# mount overlay with $lowerdir2 as upperdir, and remove & recreate testdir,
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# make testdir on $lowerdir2 opaque
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_overlay_mount_dirs $lowerdir1 $lowerdir2 $workdir $SCRATCH_DEV $SCRATCH_MNT
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rm -rf $SCRATCH_MNT/testdir
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mkdir -p $SCRATCH_MNT/testdir/visibledir
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_scratch_unmount
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# mount overlay again, with lowerdir1 and lowerdir2 as multiple lowerdirs,
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# and create a new file in testdir, triggers copyup from lowerdir,
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# copyup should not copy overlayfs private xattr
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_overlay_mount_dirs "$lowerdir2:$lowerdir1" $upperdir $workdir \
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$SCRATCH_DEV $SCRATCH_MNT
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touch $SCRATCH_MNT/testdir/visiblefile
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# umount and mount overlay again, buggy kernel treats the copied-up dir as
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# opaque, visibledir is not seen in merged dir.
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_scratch_unmount
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_overlay_mount_dirs "$lowerdir2:$lowerdir1" $upperdir $workdir \
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$SCRATCH_DEV $SCRATCH_MNT
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ls $SCRATCH_MNT/testdir
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# success, all done
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status=0
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exit
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