4 # Create and populate an XFS filesystem, corrupt a long symlink, then see how
5 # the kernel and xfs_repair deal with it.
7 #-----------------------------------------------------------------------
8 # Copyright (c) 2015 Oracle, Inc. All Rights Reserved.
10 # This program is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU General Public License as
12 # published by the Free Software Foundation.
14 # This program is distributed in the hope that it would be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program; if not, write the Free Software Foundation,
21 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #-----------------------------------------------------------------------
26 seqres=$RESULT_DIR/$seq
27 echo "QA output created by $seq"
31 status=1 # failure is the default!
32 trap "_cleanup; exit \$status" 0 1 2 3 15
40 # get standard environment, filters and checks
46 # real QA test starts here
51 test -n "${FORCE_FUZZ}" || _require_scratch_xfs_crc
53 _require_xfs_db_blocktrash_z_command
54 test -z "${FUZZ_ARGS}" && FUZZ_ARGS="-n 8 -3"
58 echo "+ create scratch fs"
59 _scratch_mkfs_xfs > /dev/null
61 echo "+ mount fs image"
65 echo "+ make some files"
66 echo "file contents: moo" > "${SCRATCH_MNT}/x"
67 str="$(perl -e "print './' x $(( (blksz / 2) - 16));")x"
68 (cd $SCRATCH_MNT; ln -s "${str}" "long_symlink")
69 cat "${SCRATCH_MNT}/long_symlink"
70 inode="$(stat -c '%i' "${SCRATCH_MNT}/long_symlink")"
71 umount "${SCRATCH_MNT}"
74 _scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"
76 echo "+ corrupt image"
77 _scratch_xfs_db -x -c "inode ${inode}" -c "dblock 0" -c "stack" -c "blocktrash -x 32 -o 256 -y $((blksz * 8)) -z ${FUZZ_ARGS}" >> $seqres.full
81 cat "${SCRATCH_MNT}/long_symlink" 2>/dev/null && _fail "symlink should be broken"
82 umount "${SCRATCH_MNT}"
85 _scratch_xfs_repair >> $seqres.full 2>&1
87 echo "+ mount image (2)"
89 cat "${SCRATCH_MNT}/long_symlink" 2>/dev/null && _fail "symlink should be broken"
90 umount "${SCRATCH_MNT}"
93 _scratch_xfs_repair -n >> $seqres.full 2>&1 || _fail "xfs_repair should not fail"