tests/generic/756

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2017 CTERA Networks. All Rights Reserved.
# Copyright (C) 2024 Aleksa Sarai <cyphar@cyphar.com>
#
# FS QA Test No. 756
#
# Check stale handles pointing to unlinked files and non-stale handles pointing
# to linked files while verifying that u64 mount IDs are correctly returned.
#
. ./common/preamble
_begin_fstest auto quick exportfs

# Import common functions.
. ./common/filter


# Modify as appropriate.
_require_test
# _require_exportfs and  already requires open_by_handle, but let's not count on it
_require_test_program "open_by_handle"
_require_exportfs
# We need both STATX_MNT_ID_UNIQUE and AT_HANDLE_MNT_ID_UNIQUE.
_require_statx_unique_mountid
_require_open_by_handle_unique_mountid

NUMFILES=1024
testdir=$TEST_DIR/$seq-dir
mkdir -p $testdir

# Create empty test files in test dir
create_test_files()
{
	local dir=$1

	mkdir -p $dir
	rm -f $dir/*
	$here/src/open_by_handle -c $dir $NUMFILES
}

# Test encode/decode file handles
test_file_handles()
{
	local dir=$1
	local opt=$2

	echo test_file_handles $* | _filter_test_dir
	$here/src/open_by_handle $opt $dir $NUMFILES
}

# Check stale handles to deleted files
create_test_files $testdir
test_file_handles $testdir -Md

# Check non-stale handles to linked files
create_test_files $testdir
test_file_handles $testdir -M

# Check non-stale handles to files that were hardlinked and original deleted
create_test_files $testdir
test_file_handles $testdir -Ml
test_file_handles $testdir -Mu

status=0
exit