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#!/bin/sh
# ensure that dd's iflag=direct and oflag=direct work
# Copyright (C) 2009-2023 Free Software Foundation, 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 3 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 <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ dd
truncate -s 8192 in || framework_failure_
dd if=in oflag=direct of=out 2> /dev/null \
|| skip_ '512 byte aligned O_DIRECT is not supported on this (file) system'
truncate -s 511 short || framework_failure_
truncate -s 8191 m1 || framework_failure_
truncate -s 8193 p1 || framework_failure_
for i in short m1 p1; do
rm -f out
dd if=$i iflag=direct oflag=direct of=out || fail=1
done
Exit $fail
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