#!/bin/sh
#
# $NetBSD: h_funcs.subr,v 1.3 2010/06/23 11:19:17 pooka Exp $
#
# Copyright (c) 2007 The NetBSD Foundation, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

#
# require_fs name
#
#	Checks that the given file system is built into the kernel and
#	that its corresponding mount(8) utility is available.  Otherwise
#	skips the test.
#
require_fs() {
	local name
	local autoload
	name="${1}"

	atf_require_prog mount
	atf_require_prog mount_${name}
	atf_require_prog umount

	# if we have autoloadable modules, just assume the file system
	atf_require_prog sysctl
	autoload=$(sysctl -n kern.module.autoload)
	[ "${autoload}" = "1" ] && return 0

	set -- $(sysctl -n vfs.generic.fstypes)
	found=no
	while [ ${#} -gt 1 ];  do
		if [ ${1} = ${name} ]; then
			found=yes
			break
		fi
		shift
	done
	[ ${found} = yes ] || \
		atf_skip "The kernel does not include support the " \
		         "\`${name}' file system"
}
