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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
87 lines
2.5 KiB
Bash
Executable File
87 lines
2.5 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 057
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#
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# Test absolute redirect is followed even if ancestor is opaque
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#
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# Typically, when following absolute redirect, if an opauqe dentry is
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# found, lookup in further lower directories is stopped. But if a
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# child dentry has another absolute redirect, then lookup in further
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# lower layers should continue.
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#
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# Say, following is example setup.
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# upper: /redirect (redirect=/a/b/c)
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# lower1: /a/[b]/c ([b] is opaque) (c has absolute redirect=/a/b/d/)
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# lower0: /a/b/d/foo
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#
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# "redirect" directory in upper should merge with lower1:/a/b/c/ and
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# lower0:/a/b/d/, despite lower1:/a/b/ being opaque.
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs overlay
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# We use non-default scratch underlying overlay dirs, we need to check
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# them explicity after test.
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_require_scratch_nocheck
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_require_scratch_overlay_features redirect_dir
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# remove all files from previous tests
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_scratch_mkfs
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# Create test directories
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lowerdir=$OVL_BASE_SCRATCH_MNT/lower
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lowerdir2=$OVL_BASE_SCRATCH_MNT/lower2
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upperdir=$OVL_BASE_SCRATCH_MNT/upper
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workdir=$OVL_BASE_SCRATCH_MNT/workdir
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workdir2=$OVL_BASE_SCRATCH_MNT/workdir2
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mkdir -p $lowerdir $lowerdir2 $upperdir $workdir $workdir2
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mkdir -p $lowerdir/origin
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touch $lowerdir/origin/foo
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_overlay_scratch_mount_dirs $lowerdir $lowerdir2 $workdir2 -o redirect_dir=on
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# Create opaque parent with absolute redirect child in middle layer
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mkdir $SCRATCH_MNT/pure
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mv $SCRATCH_MNT/origin $SCRATCH_MNT/pure/redirect
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$UMOUNT_PROG $SCRATCH_MNT
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_overlay_scratch_mount_dirs $lowerdir2:$lowerdir $upperdir $workdir -o redirect_dir=on
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mv $SCRATCH_MNT/pure/redirect $SCRATCH_MNT/redirect
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# List content of renamed merge dir before mount cycle
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ls $SCRATCH_MNT/redirect/
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# Verify that redirects are followed by listing content of renamed merge dir
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# after mount cycle
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$UMOUNT_PROG $SCRATCH_MNT
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_overlay_scratch_mount_dirs $lowerdir2:$lowerdir $upperdir $workdir -o redirect_dir=on
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ls $SCRATCH_MNT/redirect/
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# check overlayfs
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_overlay_check_scratch_dirs "$lowerdir2:$lowerdir" $upperdir $workdir -o redirect_dir=on
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# success, all done
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status=0
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exit
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