mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Amir Goldstein
8e1e3cd84f
This test is for a regression that was introduced in kernel v4.17 by
commit 8b58924ad55c ("ovl: lookup in inode cache first when decoding
lower file handle").
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
87 lines
2.1 KiB
Bash
Executable File
87 lines
2.1 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2018 CTERA Networks. All Rights Reserved.
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#
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# FS QA Test No. 062
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#
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# Test file handle decode with multi lower layers on same fs
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#
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# This test is for a regression that was introduced in kernel v4.17 by
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# commit 8b58924ad55c ("ovl: lookup in inode cache first when decoding
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# lower file handle").
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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 $tmp.*
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$UMOUNT_PROG $lowertestdir
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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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# real QA test starts here
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_supported_fs overlay
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_supported_os Linux
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_require_scratch
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_require_test_program "open_by_handle"
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# We need to require all features together, because nfs_export cannot
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# be enabled when index is disabled
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_require_scratch_overlay_features index nfs_export
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NUMFILES=1
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# Create test dir and empty test files
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create_test_files()
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{
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local dir=$1
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mkdir -p $dir
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$here/src/open_by_handle -cwp $dir $NUMFILES
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}
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# Test encode/decode file handles on overlay mount
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test_file_handles()
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{
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local dir=$1
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$here/src/open_by_handle -rp $dir $NUMFILES
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}
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_scratch_mkfs
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# All lower layers are on scratch partition
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lower=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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lower2=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER.2
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lowertestdir=$lower2/testdir
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create_test_files $lowertestdir
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# bind mount to pin lower test dir dentry to dcache
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$MOUNT_PROG --bind $lowertestdir $lowertestdir
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# For non-upper overlay mount, nfs_export requires disabling redirect_dir.
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$MOUNT_PROG -t overlay $OVL_BASE_SCRATCH_MNT $SCRATCH_MNT \
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-o ro,redirect_dir=nofollow,nfs_export=on,lowerdir=$lower:$lower2
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# Decode an overlay directory file handle, whose underlying lower dir dentry
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# is in dcache and connected and does not belong to the upper most lower layer.
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# The test program drops caches, but $lowertestdir dcache in pinned, so only
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# the overlay dentry is dropped.
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test_file_handles $SCRATCH_MNT/testdir -rp
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echo "Silence is golden"
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status=0
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exit
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