tests/generic/777

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018-2025 CTERA Networks. All Rights Reserved.
#
# FS QA Test No. 777
#
# Check open by connectable file handle after cycle mount.
#
# This is a variant of test 477 with connectable file handles.
# This test uses load and store of file handles from a temp file to test
# decoding file handles after cycle mount and after directory renames.
# Decoding connectable file handles after being moved to a new parent
# is expected to fail on some filesystems, but not on filesystems that
# do not really get unmounted in mount cycle like tmpfs, so skip this test.
#
. ./common/preamble
_begin_fstest auto quick exportfs

# Import common functions.
. ./common/filter


# Modify as appropriate.
_require_test
# Require connectable file handles support
_require_open_by_handle -N

NUMFILES=10
testroot=$TEST_DIR/$seq-dir
testdir=$testroot/testdir

# Create test dir and test files, encode connectable file handles and store to tmp file
create_test_files()
{
	rm -rf $testdir
	mkdir -p $testdir
	$here/src/open_by_handle -N -cwp -o $tmp.handles_file $testdir $NUMFILES
}

# Decode connectable file handles loaded from tmp file
test_file_handles()
{
	local opt=$1
	local when=$2

	echo test_file_handles after $when
	$here/src/open_by_handle $opt -i $tmp.handles_file $TEST_DIR $NUMFILES
}

# Decode file handles of files/dir after cycle mount
create_test_files
_test_cycle_mount
test_file_handles -rp "cycle mount"

# Decode file handles of files/dir after rename of parent and cycle mount
create_test_files $testdir
rm -rf $testdir.renamed
mv $testdir $testdir.renamed/
_test_cycle_mount
test_file_handles -rp "rename parent"

# Decode file handles of files/dir after rename of grandparent and cycle mount
create_test_files $testdir
rm -rf $testroot.renamed
mv $testroot $testroot.renamed/
_test_cycle_mount
test_file_handles -rp "rename grandparent"

status=0
exit