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#!/bin/bash
#
# Test that opening O_DIRECT succeeds when image file I/O produces EIO
#
# Copyright (C) 2015 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=stefanha@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
devname="eiodev$$"
_setup_eiodev()
{
# This test should either be run as root or with passwordless sudo
for cmd in "" "sudo -n"; do
echo "0 $((1024 * 1024 * 1024 / 512)) error" | \
$cmd dmsetup create "$devname" 2>/dev/null
if [ "$?" -eq 0 ]; then
return
fi
done
_notrun "root privileges required to run dmsetup"
}
_cleanup_eiodev()
{
for cmd in "" "sudo -n"; do
$cmd dmsetup remove "$devname" 2>/dev/null
if [ "$?" -eq 0 ]; then
return
fi
done
}
_cleanup()
{
_cleanup_eiodev
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt raw
_supported_proto file
_supported_os Linux
_setup_eiodev
TEST_IMG="/dev/mapper/$devname"
echo
echo "== reading from error device =="
# Opening image should succeed but the read operation should fail
$QEMU_IO --format "$IMGFMT" --nocache -c "read 0 65536" "$TEST_IMG" | _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full
status=0
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