mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Amir Goldstein
33e4199895
Use the new var OVL_BASE_SCRATCH_MNT to refer to overlay base dir instead of the legacy SCRATCH_DEV var. In overlay/011, when using MOUNT_PROG directly, provide OVL_BASE_SCRATCH_MNT as device argument instead of 'none'. This fix is required to support mount of base fs. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
97 lines
2.3 KiB
Bash
Executable File
97 lines
2.3 KiB
Bash
Executable File
#! /bin/bash
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# FSQA Test No. 016
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#
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# Test ro/rw fd data inconsistecies
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#
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# This simple test demonstrates a known issue with overlayfs:
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# - process A opens file F for read
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# - process B writes new data to file F
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# - process A reads old data from file F
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#
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#-----------------------------------------------------------------------
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#
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# Copyright (C) 2016 CTERA Networks. All Rights Reserved.
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# Author: Amir Goldstein <amir73il@gmail.com>
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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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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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# 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 overlay
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_supported_os Linux
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_require_scratch
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_require_xfs_io_command "open"
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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# Create our test files.
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lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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mkdir -p $lowerdir
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echo "This is old news" > $lowerdir/foo
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echo "This is old news" > $lowerdir/bar
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_scratch_mount
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#
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# case #1:
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# open file for read (rofd)
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# open file for write (rwfd)
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# write to rwfd
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# read from rofd
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#
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$XFS_IO_PROG -r $SCRATCH_MNT/foo \
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-C "open $SCRATCH_MNT/foo" \
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-C "pwrite -S 0x61 0 16" \
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-C "file 0" \
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-C "pread -v 0 16" \
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| _filter_xfs_io | _filter_scratch
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#
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# case #2:
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# mmap MAP_SHARED|PROT_READ of rofd
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# write to rwfd
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# read from mapped memory
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#
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$XFS_IO_PROG -r $SCRATCH_MNT/bar \
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-C "mmap -r 0 16" \
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-C "open $SCRATCH_MNT/bar" \
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-C "pwrite -S 0x61 0 16" \
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-C "mread -v 0 16" \
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| _filter_xfs_io | _filter_scratch
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status=0
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exit
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