On 3/11/25 16:04, Chao Yu wrote:
> This is a regression test to check whether fsck can handle corrupted
> nlinks correctly, it uses inject.f2fs to inject nlinks w/ wrong value,
> and expects fsck.f2fs can detect such corruption and do the repair.
>
> Cc: Jaegeuk Kim <jaeg...@kernel.org>
> Signed-off-by: Chao Yu <c...@kernel.org>
> ---
> v3:
> - check socket command
> - add _cleanup to kill & wait background thread
> - add commit title in _fixed_by_git_commit line
> - clean up codes
> tests/f2fs/009 | 145 +++++++++++++++++++++++++++++++++++++++++++++
> tests/f2fs/009.out | 2 +
> 2 files changed, 147 insertions(+)
> create mode 100755 tests/f2fs/009
> create mode 100644 tests/f2fs/009.out
>
> diff --git a/tests/f2fs/009 b/tests/f2fs/009
> new file mode 100755
> index 00000000..4f8b2079
> --- /dev/null
> +++ b/tests/f2fs/009
> @@ -0,0 +1,145 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2025 Chao Yu. All Rights Reserved.
> +#
> +# FS QA Test No. f2fs/009
> +#
> +# This is a regression test to check whether fsck can handle corrupted
> +# nlinks correctly, it uses inject.f2fs to inject nlinks w/ wrong value,
> +# and expects fsck.f2fs can detect such corruption and do the repair.
> +#
> +. ./common/preamble
> +_begin_fstest auto quick
> +
> +if [ ! -x "$(type -P socket)" ]; then
> + _notrun "Couldn't find socket"
> +fi
> +
> +_require_scratch
> +_require_command "$F2FS_INJECT_PROG" inject.f2fs
> +_require_command "$F2FS_FSCK_PROG" fsck.f2fs
Forgot to remove this, let me fix this in v4 later.
Thanks,
> +
> +_fixed_by_git_commit f2fs-tools 958cd6e "fsck.f2fs: support to repair
> corrupted i_links"
> +
> +filename=$SCRATCH_MNT/foo
> +hardlink=$SCRATCH_MNT/bar
> +
> +_cleanup()
> +{
> + if [ -n "$pid" ]; then
> + kill $pid &> /dev/null
> + wait
> + fi
> +}
> +
> +for ((i=0;i<14;i++)) do
> + echo "round: " $i >> $seqres.full
> +
> + _scratch_mkfs >> $seqres.full
> + _scratch_mount
> +
> + if [ $i == 0 ]; then
> + touch $filename
> + ino=`stat -c '%i' $filename`
> + nlink=0
> + elif [ $i == 1 ]; then
> + mkdir $filename
> + ino=`stat -c '%i' $filename`
> + nlink=1
> + elif [ $i == 2 ]; then
> + mknod $filename c 9 0
> + ino=`stat -c '%i' $filename`
> + nlink=0
> + elif [ $i == 3 ]; then
> + mknod $filename b 8 0
> + ino=`stat -c '%i' $filename`
> + nlink=0
> + elif [ $i == 4 ]; then
> + mkfifo $filename
> + ino=`stat -c '%i' $filename`
> + nlink=0
> + elif [ $i == 5 ]; then
> + socket -s $filename >> $seqres.full 2>&1 &
> + pid=$!
> + sleep 2
> + ino=`stat -c '%i' $filename`
> + kill $pid >> $seqres.full 2>&1
> + nlink=0
> + elif [ $i == 6 ]; then
> + ln -s $SCRATCH_MNT/empty $filename
> + ino=`stat -c '%i' $filename`
> + nlink=0
> + elif [ $i == 7 ]; then
> + # orphan inode
> + touch $filename
> + ino=`stat -c '%i' $filename`
> + $F2FS_IO_PROG write 1 0 1 zero atomic_commit $filename 5000 >>
> $seqres.full 2>&1 &
> + stat $filename >> $seqres.full
> + rm $filename
> + $F2FS_IO_PROG shutdown 1 $SCRATCH_MNT/ >> $seqres.full
> + sleep 6
> + nlink=1
> + elif [ $i == 8 ]; then
> + # hardlink on file
> + touch $filename
> + ino=`stat -c '%i' $filename`
> + ln $filename $hardlink
> + nlink=0
> + elif [ $i == 9 ]; then
> + # hardlink on charactor
> + mknod $filename c 9 0
> + ino=`stat -c '%i' $filename`
> + ln $filename $hardlink
> + nlink=0
> + elif [ $i == 10 ]; then
> + # hardlink on blockdev
> + mknod $filename b 8 0
> + ino=`stat -c '%i' $filename`
> + ln $filename $hardlink
> + nlink=0
> + elif [ $i == 11 ]; then
> + # hardlink on pipe
> + mkfifo $filename
> + ino=`stat -c '%i' $filename`
> + ln $filename $hardlink
> + nlink=0
> + elif [ $i == 12 ]; then
> + # hardlink on socket
> + socket -s $filename >> $seqres.full 2>&1 &
> + pid=$!
> + sleep 2
> + ino=`stat -c '%i' $filename`
> + kill $pid >> $seqres.full 2>&1
> + ln $filename $hardlink
> + nlink=0
> + elif [ $i == 13 ]; then
> + # hardlink on symlink
> + ln -s $SCRATCH_MNT/empty $filename
> + ino=`stat -c '%i' $filename`
> + ln $filename $hardlink
> + nlink=0
> + fi
> +
> + if [ $i != 7 ]; then
> + stat $SCRATCH_MNT/* >> $seqres.full
> + fi
> + echo "ino:"$ino >> $seqres.full
> + echo "nlink:"$nlink >> $seqres.full
> +
> + _scratch_unmount
> +
> + $F2FS_INJECT_PROG --node --mb i_links --nid $ino --val $nlink
> $SCRATCH_DEV \
> + >> $seqres.full || _fail "fail to inject"
> +
> + _check_scratch_fs >> $seqres.full 2>&1 && _fail "can't find corruption"
> + _repair_scratch_fs >> $seqres.full
> + _check_scratch_fs >> $seqres.full 2>&1 || _fail "fsck can't fix
> corruption"
> +
> + _scratch_mount
> + _scratch_unmount
> +done
> +
> +echo "Silence is golden"
> +
> +status=0
> +exit
> diff --git a/tests/f2fs/009.out b/tests/f2fs/009.out
> new file mode 100644
> index 00000000..7e977155
> --- /dev/null
> +++ b/tests/f2fs/009.out
> @@ -0,0 +1,2 @@
> +QA output created by 009
> +Silence is golden
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