mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Eric Sandeen
30adee0b35
This test tries to directly corrupt the CRC field of the primary superblock by using xfs_io pwrite, but never syncs it to disk, so it's quite likely that the mount will not see the bad data. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
72 lines
1.9 KiB
Bash
Executable File
72 lines
1.9 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 005
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#
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# Test that a bad crc on a primary V5 superblock will fail the mount
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#
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# 10e6e65 xfs: be more forgiving of a v4 secondary sb w/ junk in v5 fields
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# inadvertently caused primary SB CRC failures to not error out, this
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# is a regression test for that fix.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Red Hat, Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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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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}
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filter_mount()
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{
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sed -e "s/mount .* failed: //"
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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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# Modify as appropriate.
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_supported_fs xfs
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_supported_os Linux
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_require_scratch_nocheck
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_require_xfs_mkfs_crc
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rm -f $seqres.full
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_scratch_mkfs_xfs -m crc=1 >> $seqres.full 2>&1 || _fail "mkfs failed"
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# Zap the crc. xfs_db updates the CRC post-write, so poke it directly
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$XFS_IO_PROG -c "pwrite 224 4" -c fsync $SCRATCH_DEV | _filter_xfs_io
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# should FAIL, the crc is bad; golden output contains mount failure
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_scratch_mount 2>&1 | filter_mount
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# success, all done
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status=0
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exit
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