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https://github.com/linux-apfs/apfstests.git
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Chao Yu
11d3da6a7f
There are some testcases use below two kind of commands to get file
size, generalize the second way as global function _get_filesize()
to simply codes.
1. ls -l $1 | $AWK_PROG '{print $5}'
2. stat -c %s $1
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
61 lines
1.7 KiB
Bash
Executable File
61 lines
1.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2015 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. btrfs/086
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#
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# Test cloning a file range with a length of zero into a destination offset
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# greater than zero.
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#
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# This made btrfs create an extent state record with a start offset greater than
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# the end offset, resulting in chaos such as an infinite loop when evicting an
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# inode.
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#
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# This issue was fixed by the following linux kernel patch:
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#
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# Btrfs: fix inode eviction infinite loop after cloning into it
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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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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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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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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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_require_cloner
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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touch $SCRATCH_MNT/foo
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touch $SCRATCH_MNT/bar
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# Now attempt to clone foo into bar. Because we pass a length of zero, the
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# clone ioctl will adjust the length to match the size of the file foo (minus
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# the source offset which is zero) - because the adjusted length value is
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# zero, it made btrfs create an extent state record for file bar with a start
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# offset (64k) greater then its end offset (64k - 1), which is something never
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# supposed to happen and for example it made inode eviction enter an infinite
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# loop that dumped a warning trace on each iteration.
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$CLONER_PROG -s 0 -d 65536 -l 0 $SCRATCH_MNT/foo $SCRATCH_MNT/bar
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echo "bar file size after clone operation: `_get_filesize $SCRATCH_MNT/bar`"
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status=0
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exit
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