#! /bin/bash
-# FS QA Test No. 306
-#
-# Test RW open of a device on a RO fs
-#
-#-----------------------------------------------------------------------
+# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2013 Red Hat, Inc. All Rights Reserved.
#
-# 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.
-#
-# This program is distributed in the hope that it would 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.
+# FS QA Test No. 306
#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-#-----------------------------------------------------------------------
+# Test RW open of a device on a RO fs
#
-
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
_cleanup()
{
+ umount $BINDFILE
cd /
rm -f $tmp.*
}
_supported_fs generic
_supported_os Linux
_require_scratch
+_require_test
+_require_symlinks
+_require_mknod
DEVNULL=$SCRATCH_MNT/devnull
DEVZERO=$SCRATCH_MNT/devzero
+SYMLINK=$SCRATCH_MNT/symlink
+BINDFILE=$SCRATCH_MNT/bindfile
+TARGET=$TEST_DIR/target
rm -f $seqres.full
_scratch_mkfs > $seqres.full 2>&1
mknod $DEVNULL c 1 3 || _fail "Could not create devnull device"
mknod $DEVZERO c 1 5 || _fail "Could not create devzero device"
+touch $BINDFILE || _fail "Could not create bind mount file"
+touch $TARGET || _fail "Could not create symlink target"
+ln -s $TARGET $SYMLINK
-_scratch_unmount || _fail "Could not unmount scratch device"
-_scratch_mount -o ro || _fail "Could notemount scratch readonly"
+_scratch_remount ro || _fail "Could not remount scratch readonly"
# We should be able to read & write to/from these devices even on an RO fs
echo "== try to create new file"
touch $SCRATCH_MNT/this_should_fail 2>&1 | _filter_scratch
echo "== pwrite to null device"
-$XFS_IO_PROG -c "pwrite 0 512" /dev/null | _filter_xfs_io
+$XFS_IO_PROG -c "pwrite 0 512" $DEVNULL | _filter_xfs_io
echo "== pread from zero device"
-$XFS_IO_PROG -c "pread 0 512" /dev/zero | _filter_xfs_io
+$XFS_IO_PROG -c "pread 0 512" $DEVZERO | _filter_xfs_io
echo "== truncating write to null device"
echo foo > $DEVNULL 2>&1 | _filter_scratch
echo "== appending write to null device"
echo foo >> $DEVNULL 2>&1 | _filter_scratch
+echo "== writing to symlink from ro fs to rw fs"
+# Various combinations of O_CREAT & O_TRUNC
+$XFS_IO_PROG -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
+$XFS_IO_PROG -f -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
+$XFS_IO_PROG -t -c "pwrite 0 512" $SYMLINK | _filter_xfs_io
+
+echo "== write to bind-mounted rw file on ro fs"
+mount --bind $TARGET $BINDFILE
+# with and without -f (adds O_CREAT)
+$XFS_IO_PROG -c "pwrite 0 512" $BINDFILE | _filter_xfs_io
+$XFS_IO_PROG -f -c "pwrite 0 512" $BINDFILE | _filter_xfs_io
+$XFS_IO_PROG -t -c "pwrite 0 512" $BINDFILE | _filter_xfs_io
+
# success, all done
status=0
exit