2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2017 Red Hat Inc. All Rights Reserved.
7 # When an attribute leaf block count is 0, xfs_repair should junk
8 # that leaf directly (as xfsprogs commit f714016).
11 seqres=$RESULT_DIR/$seq
12 echo "QA output created by $seq"
16 status=1 # failure is the default!
17 trap "_cleanup; exit \$status" 0 1 2 3 15
25 # get standard environment, filters and checks
30 # remove previous $seqres.full before test
33 # Modify as appropriate.
39 # get block size ($dbsize) from the mkfs output
40 _scratch_mkfs_xfs 2>/dev/null | _filter_mkfs 2>$tmp.mkfs >/dev/null
45 touch $SCRATCH_MNT/$seq.attrfile
46 inum=$(stat -c '%i' $SCRATCH_MNT/$seq.attrfile)
48 # To get an attr block leaf, we need to extend attr format to extent
49 # or btree format at least, and the max inode size is half of filesystem
50 # block size, so write half of block size attr to make sure attr
51 # out of local format.
52 maxisize=$((dbsize/2))
53 $SETFATTR_PROG -n "user.testattr${seq}" \
54 -v "$(perl -e "print 'v' x ${maxisize};")" \
55 $SCRATCH_MNT/$seq.attrfile
58 # manually corrupt the XFS, by set the header count of attr to 0
59 _scratch_xfs_set_metadata_field "hdr.count" "0" \
60 "inode $inum" "ablock 0" >> $seqres.full
62 # verify current xfs_db write command can set hdr.count to 0. Old xfsprogs
63 # can't do that on v5 filesystems.
64 count=$(_scratch_xfs_get_metadata_field "hdr.count" \
65 "inode $inum" "ablock 0")
66 if [ "$count" != "0" ]; then
67 _notrun "xfs_db can't set attr hdr.count to 0"
70 # make sure xfs_repair can find above corruption. If it can't, that
71 # means we need to fix this bug on current xfs_repair
72 _scratch_xfs_repair -n >> $seqres.full 2>&1
74 _fail "xfs_repair can't find the corruption"
76 # If xfs_repair can find this corruption, then this repair
77 # should junk above leaf attribute and fix this XFS.
78 _scratch_xfs_repair >> $seqres.full 2>&1
80 # Old xfs_repair maybe find and fix this corruption by
81 # reset the first used heap value and the usedbytes cnt
82 # in ablock 0. That's not what we want. So check if
83 # xfs_repair has junked the whole ablock 0 by xfs_db.
84 _scratch_xfs_db -x -c "inode $inum" -c "ablock 0" | \
85 grep -q "no attribute data"
87 _fail "xfs_repair didn't junk the empty attr leaf"
91 echo "Silence is golden"