//
// Copyright 2019-2023 Nestybox, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package idMap

import (
	"github.com/nestybox/sysbox-libs/linuxUtils"
)

// checkKernelVersion checks if the kernel vesion is equal or newer than the
// given major.minor number.
func checkKernelVersion(reqMaj, reqMin int) (bool, error) {
	var major, minor int

	rel, err := linuxUtils.GetKernelRelease()
	if err != nil {
		return false, err
	}

	major, minor, err = linuxUtils.ParseKernelRelease(rel)
	if err != nil {
		return false, err
	}

	if major < reqMaj {
		return false, nil
	} else if major == reqMaj && minor < reqMin {
		return false, nil
	} else {
		return true, nil
	}
}
